Open Library
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Novels
- Das Grauen vor der Tür [German] (1979) with H. P. Lovecraft
- Das Tor des Verderbens [German] (1994) with H. P. Lovecraft
- Death By Design (1953)
- Le rôdeur devant le seuil [French] (1971) with A. Derleth and H. P. Lovecraft
- Le rôdeur devant le seuil [French] (1992)
- Mr. Fairlie's Final Journey (1968)
- The Beast in Holger's Woods (1968)
- The Lurker at the Threshold (1945) with H. P. Lovecraft
- "Who Shall I Say Is Calling?" and Other Stories (2009)
- 'Wie kan ik zeggen dat er is?' [Dutch] (1968)
- A Derleth Collection (1993)
- A Praed Street Dossier (1968)
- Auf Cthulhus Spur [German] (1972)
- August Derleth's Eerie Creatures (2009)
- Colonel Markesan and Less Pleasant People (1966) with Mark Schorer
- Cuentos del más allá [Spanish] (1951)
- Die dunkle Brüderschaft [German] (1987) with H. P. Lovecraft
- Die Masken des Cthulhu [German] (2001)
- Dwellers in Darkness (1976)
- Harrigan's File (1975)
- In Lovecraft's Shadow: The Cthulhu Mythos Stories of August Derleth (1998)
- In Re: Sherlock Holmes (1945)
- L'amulette tibétaine [French] (1985)
- L'ombre venue de l'espace et autres contes [French] (1978) with A. Derleth and H. P. Lovecraft
- La trace de Cthulhu [French] (1974) with A. Derleth and H. P. Lovecraft
- La trace de Cthulhu [French] (1975)
- Le fantôme du lac [French] (1987)
- Le masque de Cthulhu [French] (1972) with H. P. Lovecraft
- Lonesome Places (1962)
- Mr. George and Other Odd Persons (1963)
- Mr. George and Other Odd Persons (1963) with Stephen Grendon
- Not Long for This World (1948)
- Regarding Sherlock Holmes: The Adventures of Solar Pons (1945)
- Someone in the Dark (1941)
- Something Near (1945)
- Tales from Not Long for This World (1961)
- That Is Not Dead (2009)
- The Adventures of Solar Pons (1975)
- The Casebook of Solar Pons (1965)
- The Chronicles of Solar Pons (1973)
- The Cthulhu Mythos (1997)
- The Final Adventures of Solar Pons (1998)
- The Mask of Cthulhu (1958)
- The Memoirs of Solar Pons (1951)
- The Reminiscences of Solar Pons (1961)
- The Return of Solar Pons (1958)
- The Scrying Place (unpublished)
- The Shadow Out of Time and Other Tales of Horror (1968) with H. P. Lovecraft
- The Shuttered Room and Other Tales of Horror (1970) with H. P. Lovecraft
- The Shuttered Room and Other Tales of Terror (1971) with H. P. Lovecraft
- The Sleepers and Other Wakeful Things (2009)
- The Solar Pons Omnibus (1982)
- The Survivor and Others (1957) with H. P. Lovecraft
- The Trail of Cthulhu (1962)
- The Watchers Out of Time (1991) with H. P. Lovecraft
- The Watchers Out of Time and Others (1974) with H. P. Lovecraft
- Three Problems for Solar Pons (1952)
- When Graveyards Yawn (1965)
- Quest for Cthulhu (2000) [O]
- The Complete Adventures of Solar Pons (unknown) [O/1-6]
- The Original Text Solar Pons Omnibus Edition (2000) [O/1,2,4,5,6,7,14]
- The World of H. P. Lovecraft (1971) [O] with H. P. Lovecraft
- The Arkham Collector - 1967 (1967)
- The Arkham Collector - 1968 (1968)
- The Arkham Collector - 1969 (1969)
- The Arkham Collector - 1970 (1970)
- The Arkham Collector - 1971 (1971)
- The Arkham Sampler - 1948 (1948)
- The Arkham Sampler - 1949 (1949)
- Beachheads in Space (1952)
- Beyond Time and Space (1950)
- Dark Mind, Dark Heart (1962)
- Dark of the Moon (1947)
- Dark Things (1971)
- Far Boundaries (1951)
- Fire and Sleet and Candlelight (1961)
- From Other Worlds (1964)
- Huit histoires de Cthulhu [French] (1975)
- L'appel de Cthulhu [French] (1989)
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La chose des ténèbres?La chose des tenebres[French] (1989) with H. P. Lovecraft
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La chose des ténèbres?La chose des tenebres[French] (1989) with A. Derleth and H. P. Lovecraft
- Légendes du mythe de Cthulhu [French] (1975)
- Légendes du mythe de Cthulhu [French] (1975)
- Légendes du mythe de Cthulhu [French] (1981)
- Légendes du mythe de Cthulhu ** [French] (1976)
- Légendes du mythe de Cthulhu 1 [French] (2007)
- New Horizons: Yesterday's Portraits of Tomorrow (1998)
- New Worlds for Old (1963)
- Night's Yawning Peal (1952)
- Over the Edge (1964)
- Paradies II [German] (1970)
- Portals of Tomorrow (1954)
-
Rendezvous mit dem Würgeengel?Rendezvous mit dem Wuergeengel[German] (1976)
- Sleep No More (1944)
- Stories from Sleep No More (1967)
- Strange Ports of Call (1948)
- Tales of the Cthulhu Mythos (1969)
- Tales of the Cthulhu Mythos (1971)
- Tales of the Cthulhu Mythos Vol. 2 (1971)
- Tales of the Cthulhu Mythos: Volume 1 (1971)
- Tales of the Cthulhu Mythos: Volume 2 (1971)
- The Arkham Collector, Vol. 1 (1971)
- The Arkham Sampler: A Facsimile Edition (2010)
- The Dark Brotherhood and Other Pieces (1966)
- The Night Side (1947)
- The Other Side of the Moon (1949)
- The Outer Reaches (1951)
- The Shuttered Room and Other Pieces (1959)
- The Sleeping and the Dead (abridged) (1963)
- The Sleeping and the Dead: Thirty Uncanny Tales (1947)
- The Time of Infinity (1963)
- The Unquiet Grave (1964)
- Time to Come (1954)
- Travellers by Night (1967)
- When Evil Wakes (1963)
- Who Knocks? (1946)
- Worlds of Tomorrow (1953)
- A Traveler in Time (2012)
- McIlvaine's Star (2009)
- Praed Street Papers (1965)
- The Adventure of the Orient Express (1965)
- The Adventure of the Unique Dickensians (1968)
- The Maugham Obsession (2023)
- 100 Books by August Derleth (1962)
- 100 Books by August Derleth (1962) with uncredited
- Arkham House: The First 20 Years 1939-1959 (1959)
- August Derleth: Thirty Years of Writing, 1926-1956 (1956)
- August Derleth: Twenty Years of Writing, 1926-1946 (1946)
- August Derleth: Twenty-Five Years of Writing, 1926-1951 (1951)
- Essential Solitude: The Letters of H. P. Lovecraft and August Derleth (2008) with S. T. Joshi and H. P. Lovecraft and David E. Schultz
- H. P. L.: A Memoir (1945)
- Some Notes on H. P. Lovecraft (1959)
- Thirty Years of Arkham House, 1939-1969 (1970)
- Writing Fiction (1946)
- "Come to Me!" (1941) with August W. Derleth
- "Just a Song at Twilight" (1930)
- "Just a Song at Twilight" (1930) with August W. Derleth
- "Melodie in E Minor" (1929)
- "Melodie in E Minor" (1929) with August W. Derleth
- "Sexton, Sexton, in the Wall" (1953)
- "Sexton, Sexton, on the Wall" (1962)
- "That Feller Oates!" (1948)
- "Who Shall I Say Is Calling?" (1952)
- 'Wie kan ik zeggen dat er is?' [Dutch] (1968)
- 'Wie kan ik zeggen dat er is?' [Dutch] (1972) with August W. Derleth
- 'Wie kan ik zeggen dat er is?' [Dutch] (1980) with August William Derleth
- A Battle Over the Tea-Cups (1932)
- A Battle Over the Tea-Cups (1932) with August W. Derleth
- A Bottle for Corezzi (1939) with Mark Schorer
- A Cloak from Messer Lando (1934)
- A Cloak from Messer Lando (1934) with August W. Derleth
- A Coisa que Andava no Vento [Portuguese] (1975)
- A Collector of Stones (1946)
- A Corner for Lucia (1953)
- A Dinner at Imola (1929)
- A Dinner at Imola (1929) with August W. Derleth
- A Gentleman from Prague (1944)
- A Gentleman from Prague (1944) with Stephen Grendon
- A Gift for Uncle Herman (1939)
- A Gift for Uncle Herman (1939) with August W. Derleth
- A Knocking in the Wall (1951)
- A Little Knowledge (1940)
- A Little Knowledge (1940) with August W. Derleth
- A Little Quiet in the Evening (1948)
- A Matter of Faith (1934) with Mark Schorer
- A Matter of Faith (1934) with August W. Derleth and Mark Schorer
- A Matter of Sight (1930)
- A Matter of Sight (1930) with August W. Derleth
- A Message for His Majesty (1939)
- A Message for His Majesty (1939) with August W. Derleth
- A Ring for Stella (1944)
- A Room in a House (1950)
- A Thin Gentleman with Gloves (1943)
- A Thin Gentleman with Gloves (1943) with Simon West
- A Traveler in Time (1953)
- A Traveler in Time (2013) with August William Derleth
- A Traveller in Time (1975)
- A Visitor from Outside (2000) with Mark Schorer
- A Wig for Miss DeVore (1943)
- Across the Hall (1930)
- Across the Hall (1930) with August W. Derleth
- Adventure of the Haunted Library (1972)
- Adventures of the Sussex Archers (1962)
- After You, Mr. Henderson (1940)
- After You, Mr. Henderson (1940) with August W. Derleth
- Alannah (1945)
- Alannah (1945) with Stephen Grendon
- Alannah [French] (1987)
- Altimer's Amulet (1941)
- Altimer's Amulet (1941) with August W. Derleth
- An Elegy for Mr. Danielson (1933)
- An Elegy for Mr. Danielson (1933) with August W. Derleth
- An Eye for History (1975)
- An Occurrence in an Antique Shop (1929)
- An Occurrence in an Antique Shop (1929) with August W. Derleth
- April Kinney (1961)
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Au-delà du seuil?Au-dela du seuil[French] (1975)
- Balu (1949)
- Balu (1949) with Stephen Grendon
- Bat's Belfry (1926)
- Bat's Belfry (1926) with August W. Derleth
- Baynter's Imp (1943)
- Beyond the Threshold (1941)
- Beyond the Threshold (1941) with August W. Derleth
- Birkett's Twelfth Corpse (1933)
- Birkett's Twelfth Corpse (1933) with August W. Derleth
- Bishop's Gambit (1947)
- Bishop's Gambit (1947) with Stephen Grendon
- Blessed Are the Meek (1948)
- Blessed Are the Meek (1948) with Stephen Grendon
- Bramwell's Guardian (1940)
- Bramwell's Guardian (1940) with August W. Derleth
- By Rocket to the Moon (1965)
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Böse Seelen?Boese Seelen[German] (1978) with Mark Schorer
- Camomile (1959)
- Carousel (1945)
- Carrousel [Spanish] (1951)
- Century Jumper (1958)
- Colonel Markesan (1934) with Mark Schorer
- Colonel Markesan (1934) with August W. Derleth and Mark Schorer
- Come to Me (1941)
- Complete With Ghost or House — With Ghost (1962)
- Compliments of Spectro (1941)
- Compliments of Spectro (1941) with August W. Derleth
- Das abgeschottete Haus [German] (2023) with August W. Derleth
- Das einsame Haus [German] (1972)
- Das Erbe der Peabodys [German] (1987) with H. P. Lovecraft
- Das Giebelfenster [German] (1987) with H. P. Lovecraft
- Das Grauen vom mittleren Brückenbogen [German] (1987) with H. P. Lovecraft
- Das Haus an der Curwen Street oder Das Manuskript des Andrew Phelan [German] (1972)
- Das Haus im Tal [German] (2001)
- Das Haus unter den Eichen [German] (1981) with Robert E. Howard
- Das Haus zwischen den Eichen [German] (2015) with Robert E. Howard
- Das Siegel von R'lyeh [German] (2001)
- Das vernagelte Zimmer [German] (1987) with H. P. Lovecraft
- De dood bewaakt het fort [Dutch] (1968)
- De dood bewaakt het fort [Dutch] (1976) with Mark Schorer
- De dood bewaakt het fort [Dutch] (1982) with August William Derleth and Mark Schorer
- De doos der goden [Dutch] (1968)
- De erfenis van Peabody [Dutch] (1968)
- De hand des doods [Dutch] (1968)
- De kamer met de luiken [Dutch] (1968)
- De Kamer met de Panelen [Dutch] (1949)
- De lamp van Alhazred [Dutch] (1968)
- Dead Man's Shoes (1946)
- Dead Man's Shoes (1946) with Stephen Grendon
- Death Holds the Post (1936) with Mark Schorer
- Death Holds the Post (1936) with August W. Derleth and Mark Schorer
- Death Holds the Post (1936)
- Der Beobachter am Himmel oder Die Entrückung des Abel Keane [German] (1972)
- Der Bewahrer des Schlüssels oder Der Bericht des Nayland Colum [German] (1972)
- Der Nachkomme [German] (1987) with H. P. Lovecraft
- Der Sandwin-Pakt [German] (2001)
- Der Schatten aus dem All [German] (1987) with H. P. Lovecraft
- Der Schatten in der Dachkammer [German] (1987) with H. P. Lovecraft
- Der Schrumpfkopf im Wohnzimmer [German] (2023) with Stephen Grendon
- Der Vorfahr [German] (1987) with H. P. Lovecraft
- Der Windläufer [German] (2003)
- Derleth's Account of Life in Sac-Prairie (1988)
- Des Teufels Statthalter [German] (1975)
- Die dunkle Brüderschaft [German] (1987) with H. P. Lovecraft
- Die Lampe des Alhazred [German] (1987) with H. P. Lovecraft
- Die Schlucht bei Salapunco oder Das Testament des Clayborne Boyd [German] (1972)
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Die Schlucht der Dämonen?Die Schlucht der Daemonen[German] (1976) with H. P. Lovecraft
- Die schwarze Insel oder Die Erzählung des Horvath Blayne [German] (1972)
- Die Ziegenmelker in den Bergen [German] (2001)
- Dîner de têtes [French] (1966)
- Ein Ungeheuer aus Wachs und Wahnsinn [German] (1975)
- El caballero delgado de las manos enguantadas [Spanish] (1951) with Simon West
- El diablo del señor Ames [Spanish] (1951)
- El lujo de Lansing [Spanish] (1951)
- El metrónomo [Spanish] (1951)
- El morador de las tinieblas [Spanish] (1951)
- El Pacific 421 [Spanish] (1951)
- El ser que marchaba sobre el viento [Spanish] (1951)
- El telescopio de McElwin [Spanish] (1951)
- El terror del arco central [Spanish] (2016) with Howard Phillips Lovecraft
- En parykk til frøken DeVore [Norwegian (Bokmal)] (1973)
- Etwas aus Holz [German] (2001)
- Etwas von da draußen [German] (2023)
- Expedition to the North (1935)
- Eyes of the Serpent (1939) with Mark Schorer
- Eyes of the Serpent (1939) with August W. Derleth and Mark Schorer
- Fehltritt in die Vergangenheit [German] (1967)
- Feigman's Beard (1934)
- Feigman's Beard (1934) with August W. Derleth
- Ferguson's Capsules (1966)
- Flaggermus-huset [Norwegian (Bokmal)] (1976)
- Fledermausruh [German] (1974)
- Fool Proof (1949)
- Footsteps far Below (2001) with John S. Glasby
- Footsteps Far Below (2001) with John Glasby
- From "Evening in Spring" (1988)
- From "House by the River" (1988)
- From the Notebooks of Dr. Lyndon Parker (1968)
- From-"Return to Walden West" (1970)
- Ghost Lake (1971)
- Ghosts Who Return to Re-enact Their Crimes (1931)
- Gioco al tramonto [Italian] (1979)
- Glory Hand (1937)
- Glory Hand (1937) with August W. Derleth
- Hallowe'en for Mr Faulkner (1976)
- Hallowe'en for Mr. Faulkner (1962)
- Halloween for Mr. Faulkner (1959)
- Han som kom tilbake [Norwegian (Bokmal)] (unknown) with H. P. Lovecraft
- Hasturs Rückkehr [German] (2001)
- He Shall Come (1929)
- Headlines for Tod Shayne (1942)
- Headlines for Tod Shayne (1942) with August W. Derleth
- Hector (1951)
- Hector (1951) with Michael West (I)
- Hector (1951) with Micahel West
- Here, Daemos! (1942)
- Here, Daemos! (1942) with August W. Derleth
- Het houten afgodsbeeld [Dutch] (1968) with August William Derleth
- Het Sandwin-verdrag [Dutch] (1973) with August W. Derleth
- Het zolderraam [Dutch] (1968)
- House—With Ghost (1962)
- I caprimugli sulle colline [Italian] (1986)
- I Was Walking Helen Home (1948)
- Il camminatore [Italian] (1988) with Mark Schorer
- Il custode della chiave [Italian] (1976)
- Il custode della chiave [Italian] (1985)
- Il patto di Sandwin [Italian] (1986)
- Il ritorno di Hastur [Italian] (1986)
- Il segno di R'Lyeh [Italian] (1986)
- Il signor George [Italian] (1987)
- Il sopravvissuto [Italian] (1975) with Howard Phillips Lovecraft
- Ils ressusciteront [French] (1975) with August W. Derleth and Mark Schorer
- Ils ressusciteront [French] (1985) with Marc Schorer
- In the Book Walden West (1988)
- In the Left Wing (1932) with Mark Schorer
- In the Left Wing (1932) with August W. Derleth and Mark Schorer
- Innsmouth Clay (1971) with H. P. Lovecraft
- Invaders from the Microcosm (1953)
- Invasion from the Microcosm (1953)
- Ithaqua (1941)
- Ithaqua (1941) with August W. Derleth
- Ithaqua [Spanish] (1951)
- Jenseits der Schwelle [German] (1991)
- Joliper's Gift (1940)
- Joliper's Gift (1940) with Eldon Heath
- Karussell [German] (1973)
- Kinderen met fantasie [Dutch] (1966) with August William Derleth
- Kinderen met fantasie [Dutch] (1982) with August William Derleth
- Kingsridge 214 (1949)
- Kingsridge 214 [Dutch] (1968)
- Kleine Nachtmusik (1948)
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L'amulette tibétaine?L'amulette tibetaine[French] (1970)
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L'ancêtre?L'ancetre[French] (1978) with A. Derleth and H. P. Lovecraft
- L'ancêtre [French] (1992)
- L'antenato [Italian] (1976) with Howard Phillips Lovecraft
- L'argile bleue d'Innsmouth [French] (1992)
- L'aventure de la boule de Nostradamus [French] (2007) with Mack Reynolds
- L'avventura dei furti nel tempo [Italian] (1955) with Mack Reynolds
- L'habitant de l'ombre [French] (1972)
- L'homme ganté [French] (1964) with Simon West
- L'horreur de l'arche centrale [French] (1992)
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L'héritage Peabody?L'heritage Peabody[French] (1978) with A. Derleth and H. P. Lovecraft
- L'héritage Peabody [French] (1992)
- L'if près de l'église [French] (1982)
- L'inconnu de Prague [French] (1987)
- L'isola nera [Italian] (1985)
- L'obsession de McGovern [French] (1970)
- L'ombre dans la mansarde [French] (1992)
- L'ombre venue de l'espace [French] (1978) with A. Derleth and H. P. Lovecraft
- L'ombre venue de l'espace [French] (1992)
- L'échéance [French] (1966) with H. P. Lovecraft
- L'île noire [French] (1974) with A. Derleth and H. P. Lovecraft
- L'île noire [French] (1992)
- L'île noire [French] (1998)
- L'île noire: ou: Le récit d'Horvath Blayne [French] (1975)
- La bibliothèque hantée [French] (1995)
- La capa escocesa [Spanish] (1951)
- La casa in Curwen Street [Italian] (1985)
- La casa nella valle [Italian] (1986)
- La chambre aux volets clos [French] (1964) with H. P. Lovecraft
- La chambre aux volets clos [French] (1985)
- La chambre condamnée [French] (1992)
- La chambre secrète [French] (1966) with H. P. Lovecraft
- La charmille hantée [French] (1987)
- La cosa che camminava nel vento [Italian] (1987)
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La couverture à damier?La couverture a damier[French] (1967)
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La fenêtre à pignon?La fenetre a pignon[French] (1978) with A. Derleth and H. P. Lovecraft
- La fenêtre à pignon [French] (1992)
- La finestra della soffitta [Italian] (1980) with H. P. Lovecraft
- La gola oltre Salapunco [Italian] (1986)
- La gorge au delà de Salapunco: ou: Le testament de Clairborne Boyd [French] (1975)
- La gorge au-delà de Salapunco [French] (1974) with A. Derleth and H. P. Lovecraft
- La gorge au-delà de Salapunco [French] (1992)
- La isla negra [Spanish] (2001)
- La lampe d'Alhazred [French] (1958) with H. P. Lovecraft
- La lampe d'Alhazred [French] (1978) with A. Derleth and H. P. Lovecraft
- La lampe d'Alhazred [French] (1992)
- La main de gloire [French] (1970)
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La maison dans la vallée?La maison dans la vallee[French] (1972)
- La maison de Curwen Street [French] (1974) with A. Derleth and H. P. Lovecraft
- La maison de Curwen street [French] (1992)
- La maison de Curwen Street: ou: Le manuscrit d'Andrew Phelan [French] (1975)
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La maison parmi les chênes?La maison parmi les chenes[French] (1985) with Robert E. Howard
- La máscara de satén [Spanish] (1951)
- La progenie del maelstrom [Italian] (1989) with Mark Schorer
- La señora Corter se decide [Spanish] (1951)
- La señora Manifold [Spanish] (1965) with Stephen Grendon
- La soglia [Italian] (1988)
- La sombra del tío Henry [Spanish] (1951)
- La tête sur la cheminée [French] (1987)
- La vedetta celeste [Italian] (1986)
- La vendetta [Italian] (1989)
- La vigie céleste [French] (1974) with A. Derleth and H. P. Lovecraft
- La vigie céleste [French] (1992)
- La vigie céleste: ou: La déposition d'Abel Keane [French] (1975)
- Lady Macbeth de Pimley Square [Spanish] (1951)
- Lady Macbeth of Pimley Square (1944)
- Lansing's Luxury (1942)
- Lansing's Luxury (1942) with August W. Derleth
- Laughter in the Night (1932) with Mark Schorer
- Laughter in the Night (1932) with August W. Derleth and Mark Schorer
- Laughter in the Night (1932) with Marc Schorer
- Le fantôme du lac [French] (1987)
- Le gardien de la clé [French] (1974) with A. Derleth and H. P. Lovecraft
- Le gardien de la clé [French] (1992)
- Le gardien de la clé: ou: Le récit de Nayland Colum [French] (1975)
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Le jour à Wentworth?Le jour a Wentworth[French] (1978) with A. Derleth and H. P. Lovecraft
- Le jour à Wentworth [French] (1992)
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Le jour à Wentworth?Le jour a Wentworth[French] (1997) with H. P. Lovecraft
- Le pacte des Sandwin [French] (1972)
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Le petit garçon perdu?Le petit garcon perdu[French] (1959)
- Le pêcheur du Falcon Point [French] (1992)
- Le retour d'Hastur [French] (1972)
- Le retour d'Hastur [French] (2000)
- Le retour de Sarah [French] (1971)
- Le sceau de R'lyeh [French] (1972)
- Le survivant [French] (1978) with A. Derleth and H. P. Lovecraft
- Le survivant [French] (1992)
- Le tertre du gibet [French] (1966)
- Le trou des sorcières [French] (1992)
- Le vent dans les lilas [French] (1987)
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Le vent de la rivière?Le vent de la riviere[French] (1970)
- Les engoulevents de la colline [French] (1972)
- Les frères de la nuit [French] (1992)
- Les lunettes bleues [French] (1987)
- Les veilleurs hors du temps [French] (1992)
- Lesandro's Familiar (1936)
- Lesandro's Familiar (1936) with August W. Derleth
- Letter to Ramsey Campbell, June 20, 1964 (2014)
- Light Again (1948)
- Logoda's Heads (1939)
- Logoda's Heads (1939) with August W. Derleth
- Lord of Evil (1939) with Tally Mason
- Lovecraft and "The Pacer" (excerpt) (1959)
- Mademoiselle Esperson [French] (1969) with Stephen Grendon
- Mademoiselle Esperson [French] (1985)
- Man in the Dark (1939)
- Man in the Dark (1939) with August W. Derleth
- Mara (1948)
- Mara (1948) with Stephen Grendon
- Mara [French] (1987)
- Mark VII (1954)
- McCrary's Wife (1948)
- McElwin's Glass (1943)
- McGovern's Obsession (1937)
- McGovern's Obsession (1937) with August W. Derleth
- McIlvaine's Star (1952)
- McIlvaine's Star (1952) with August William Derleth
- Med hilsen fra Spectro [Norwegian (Bokmal)] (unknown)
- Memoir for Lucas Payne (1939)
- Memoir for Lucas Payne (1939) with August W. Derleth
- Miss Esperson (1962)
- Miss Esperson (1962) with Stephen Grendon
- Miss Esperson [French] (1977)
- Mister George [German] (2023) with Stephen Grendon
- Mme Manifold [French] (1987)
- Monie (1961)
- Monsieur Georges [French] (1987)
- Moonlight in the Apple Tree (1948)
- More from Dr. Parker's Notebooks (1998)
- Motive (1939)
- Motivo [Spanish] (1951)
- Mr. Ames og djevelen hans [Norwegian (Bokmal)] (1976)
- Mr. Ames' Devil (1926)
- Mr. Ames' Devil (1942) with August W. Derleth
- Mr. Berbeck Had a Dream (1935)
- Mr. Berbeck Had a Dream (1935) with August W. Derleth
- Mr. C (1961)
- Mr. George (1947)
- Mr. George (1947) with Stephen Grendon
- Mr. George [Dutch] (1957) with Stephen Grendon
- Mr. Jimson Assists (1933)
- Mr. Jimson Assists (1933) with August W. Derleth
- Mrs. Bentley's Daughter (1930)
- Mrs. Bentley's Daughter (1930) with August W. Derleth
- Mrs. Corter Makes Up Her Mind (1942)
- Mrs. Corter Makes Up Her Mind (1942) with August W. Derleth
- Mrs. Elting Does Her Part (1939)
- Mrs. Elting Does Her Part (1939) with Tally Mason
- Mrs. Eltring Plays Her Part (1968)
- Mrs. Lannisfree (1945)
- Mrs. Lannisfree [German] (1971)
- Mrs. Manifold (1949)
- Mrs. Manifold (1949) with Stephen Grendon
- Muggridge's Aunt (1935)
- Muggridge's Aunt (1935) with August W. Derleth
- Más allá del umbral [Spanish] (1951)
- Nella (1948)
- Nellie Foster (1933)
- Nellie Foster (1933) with August W. Derleth
- No Light for Uncle Henry (1943)
- Noticia de primera plana para Tod Shayne [Spanish] (1951)
- Now Is the Time for All Good Men (1948)
- Old Mark (1929)
- Old Mark (1929) with August W. Derleth
- One Against the Dead (1948)
- Open, Sesame! (1949)
- Open, Sesame! (1949) with Stephen Grendon
- Others Deal in Death (1961)
- Pacific 421 (1944) with August W. Derleth
- Pacific 421 (1944)
- Parrington's Pool (1947)
- Parrington's Pool (1947) with Stephen Grendon
- Passing of Eric Holm (1939)
- Passing of Eric Holm (1939) with Will Garth
- Peabody-arven [Norwegian (Bokmal)] (1976) with H. P. Lovecraft
- Phantom Lights (1934)
- Phantom Lights (1934) with August W. Derleth
- Pikeman (1946)
- Potts Triumph [German] (1969)
- Potts' Triumph (1950)
- Praed Street Papers (1965)
- Prince Borgia's Mass (1931)
- Prince Borgia's Mass (1931) with August W. Derleth
- Prins Borgias messe [Norwegian (Bokmal)] (1976)
- Protoplasma (1975)
-
På andra sidan?Paa andra sidan[Swedish] (1976)
- På den andre siden av terskelen [Norwegian (Bokmal)] (1976)
- Qualcosa di legno [Italian] (1986)
- Quelque chose en bois [French] (1972)
- Red Hands (1932) with Mark Schorer
- Red Hands (1932) with August W. Derleth and Mark Schorer
- Riders in the Sky (1928) with Mark Schorer
- Riders in the Sky (1928) with August W. Derleth and Marc R. Schorer
- Riders in the Sky (2009) with Marc R. Schorer
- Room to Turn Around (1936)
- Sac Prairie Notebook (1945)
- Saunder's Little Friend (1948)
- Scarlatti's Bottle (1929)
- Scarlatti's Bottle (1929) with August W. Derleth
- Schneetreiben [German] (1988)
- Servizio speciale [Italian] (1954) with George Shelton
- Skräcken vid bron [Swedish] (1975) with H. P. Lovecraft
-
Sneføyk?Snefoyk[Norwegian (Bokmal)] (1976) with Stephen Grendon
- Something from Out There (1951)
- Something in Wood (1948)
- Spawn of the Maelstrom (1939) with Mark Schorer
- Spawn of the Maelstrom (1939) with August W. Derleth and Mark Schorer
- Spuren im Schnee [German] (1968) with August W. Derleth
- Stuff of Dreams (1948)
- Tail of the Dog (1959)
- Terror Over London (1998)
- The Adventure of Ricoletti of the Club Foot (1951)
- The Adventure of Ricoletti of the Clubfoot (1982)
- The Adventure of the "Triple Kent" (1957)
- The Adventure of the Aluminum Crutch (1973)
- The Adventure of the Amateur Philologist (1964)
- The Adventure of the Ascot Scandal (1965)
- The Adventure of the Ball of Nostradamus (1955) with Mack Reynolds
- The Adventure of the Benin Bronze (1973)
- The Adventure of the Bishop's Companion (1973)
- The Adventure of the Black Cardinal (1930)
- The Adventure of the Black Narcissus (1929)
- The Adventure of the Blind Clairaudient (1961)
- The Adventure of the Bookseller's Clerk (1968)
- The Adventure of the Broken Chessman (1929)
- The Adventure of the Burlstone Horror (1998)
- The Adventure of the Camberwell Beauty (1952)
- The Adventure of the China Cottage (1965)
- The Adventure of the Circular Room (1946)
- The Adventure of the Cloverdale Kennels (1960)
- The Adventure of the Crouching Dog (1964)
- The Adventure of the Devil's Footprints (1956)
- The Adventure of the Dog in the Manger (1951)
- The Adventure of the Dorrington Inheritance (1958)
- The Adventure of the Extra-Terrestrial (1998) with Mack Reynolds
- The Adventure of the Fatal Glance (1963)
- The Adventure of the Five Royal Coachmen (1951)
- The Adventure of the Frightened Baronet (1945)
- The Adventure of the Golden Bracelet (1973)
- The Adventure of the Grice-Paterson Curse (1956)
- The Adventure of the Hats of M. Dulac (1961)
- The Adventure of the Haunted Library (1963)
- The Adventure of the Innkeeper's Clerk (1965)
- The Adventure of the Intarsia Box (1964)
- The Adventure of the Late Mr. Faversham (1929)
- The Adventure of the Limping Man (1929)
- The Adventure of the Little Hangman (1957)
- The Adventure of the Lost Dutchman (1955)
- The Adventure of the Lost Holiday (1945)
- The Adventure of the Lost Locomotive (1951)
- The Adventure of the Man with the Broken Face (1945)
- The Adventure of the Mazarine Blue (1956)
- The Adventure of the Missing Huntsman (1965)
- The Adventure of the Missing Tenants (1929)
- The Adventure of the Mosaic Cylinders (1959)
- The Adventure of the Muttering Man (1998)
- The Adventure of the Norcross Riddle (1944)
- The Adventure of the Nosferatu (1998) with Mack Reynolds
- The Adventure of the Orient Express (1965)
- The Adventure of the Paralytic Mendicant (1951)
- The Adventure of the Penny Magenta (1954)
- The Adventure of the Perfect Husband (1951)
- The Adventure of the Praed Street Irregulars (1961)
- The Adventure of the Proper Comma (1951)
- The Adventure of the Purloined Periapt (1945)
- The Adventure of the Red Leech (1966)
- The Adventure of the Retired Novelist (1945)
- The Adventure of the Rydberg Numbers (1952)
- The Adventure of the Seven Passengers (1945)
- The Adventure of the Seven Sisters (1973)
- The Adventure of the Shaplow Millions (1973)
- The Adventure of the Six Silver Spiders (1951)
- The Adventure of the Snitch in Time (1953) with Mack Reynolds
- The Adventure of the Sotheby Salesman (1945)
- The Adventure of the Spurious Tamerlaine (1964)
- The Adventure of the Spurious Tamerlane (1982)
- The Adventure of the Stone of Scone (1958)
- The Adventure of the Sussex Archers (1962)
- The Adventure of the Swedenborg Signatures (1954)
- The Adventure of the Three Red Dwarfs (1945)
- The Adventure of the Tottenham Werewolf (1951)
- The Adventure of the Trained Cormorant (1956)
- The Adventure of the Troubled Magistrate (1961)
- The Adventure of the Unique Dickensians (1968)
- The Adventure of the Viennese Musician (1998)
- The Adventure of the Whispering Knights (1963)
- The Adventures of Gresham Old Place (1998)
- The Adventures of Solar Pons (1945)
- The Amateur Philologist (1964)
- The Ancestor (1957) with H. P. Lovecraft
- The Bell in the Arbor (1945)
- The Bishop Sees Through (1932)
- The Bishop Sees Through (1932) with August W. Derleth
- The Black Castle (1927) with Mark Schorer
- The Black Castle (1927) with Marc R. Schorer
- The Black Castle (1927) with August W. Derleth and Marc R. Schorer
- The Black Island (1952)
- The Black Island (1996) with August W. Derleth
- The Black Island: Being the Narrative of Horvath Blayne (1962)
- The Black Island: The Narrative of Hovath Blayne (1998)
- The Blue Spectacles (1949)
- The Blue Spectacles (1949) with Stephen Grendon
- The Boundary of Now (1961)
- The Bridge of Sighs (1931)
- The Bridge of Sighs (1931) with August W. Derleth
- The Captain Is Afraid (1931)
- The Captain Is Afraid (1931) with August W. Derleth
- The Carven Image (1933) with Mark Schorer
- The Carven Image (1933)
- The Carven Image (1933) with August W. Derleth and Mark Schorer
- The China Cottage (1965)
- The Christmas Virgin (1961)
- The Churchyard Yew (1947)
- The Churchyard Yew (1947) with J. Sheridan LeFanu
- The Churchyard Yew (1975) with J. Sheridan Le Fanu
- The Closing Door (1950)
- The Coffin of Lissa (1926)
- The Coffin of Lissa (1926) with August W. Derleth
- The Conradi Affair (1928) with Carl W. Ganzlin
- The Conradi Affair (1928) with August W. Derleth and Carl W. Ganzlin
- The Cossacks Ride Hard (1934)
- The Countries in the Sea (1999) with Mark Schorer
- The Countries in the Sea (1999) with August W. Derleth and Mark Schorer
- The Dark Boy (1957)
- The Dark Brotherhood (1966) with H. P. Lovecraft
- The Dark Brotherhood (1966) with August W. Derleth
- The Dead Shall Rise Up (1940)
- The Dead Shall Rise Up (1940) with Will Garth
- The Deserted Garden (1929)
- The Deserted Garden (1929) with August W. Derleth
- The Detective and the Senator (1953)
- The Devil's Pay (1926)
- The Devil's Pay (1926) with August W. Derleth
- The Disc Recorder (1953)
- The Drifting Snow (1939)
- The Drifting Snow (1939) with Stephen Grendon
- The Drifting Snow (1939) with August W. Derleth
- The Dweller in Darkness (1944)
- The Ebony Stick (1953)
- The Element of Chance (1952)
- The Elixir of Life (1926) with Mark Schorer
- The Elixir of Life (1926) with August W. Derleth and Marc R. Schorer
- The Evil Ones (1940) with Mark Schorer
- The Evil Ones (1940) with August W. Derleth and Mark Schorer
- The Extra Child (1950)
- The Extra Passenger (1947)
- The Extra Passenger (1947) with Stephen Grendon
- The Fifth Child (1950)
- The Figure with the Scythe (1973) with Mark Schorer
- The Figure with the Scythe (1973) with August W. Derleth and Mark Schorer
- The Fisherman of Falcon Point (1959) with H. P. Lovecraft
- The Four Who Came Back (1940)
- The Four Who Came Back (1940) with Tally Mason
- The Gable Window (1957) with H. P. Lovecraft
- The Ghost Walk (1947)
- The Ghost Walk (1947) with Stephen Grendon
- The God-Box (1945)
- The Gold-Box (1945)
- The Gorge Beyond Salapunco (1949)
- The Gorge Beyond Salapunco: Being the Testament of Claiborne Boyd (1949)
- The Gorge beyond Salapunco: The Testament of Claiborne Boyd (1949)
- The Haunters of Night (1951)
- The Hills Stand Watch (excerpt) (1988)
- The Horror from the Depths (1966) with Mark Schorer
- The Horror from the Middle Span (1967) with H. P. Lovecraft
- The House in the Magnolias (1932) with Mark Schorer
- The House in the Magnolias (1932)
- The House in the Magnolias (1932) with August W. Derleth and Mark Schorer
- The House in the Oaks (1971) with Robert E. Howard
- The House in the Valley (1953)
- The House of Curwen Street (1971)
- The House of Moonlight (1961)
- The House on Curwen Street (1944)
- The House on Curwen Street: Being the Manuscript of Andrew Phelan (1944)
- The House on Curwen Street: The Manuscript of Andrew Phelan (1944)
- The House on the Highway (1929)
- The House on the Highway (1929) with August W. Derleth
- The Incredible Dr Markesan (1934)
- The Inheritors (1929)
- The Inheritors (1929) with August W. Derleth
- The Inverness Cape (1945)
- The Irregulars Strike Again (excerpt) (1988)
- The Island Out of Space (1950)
- The Keeper of the Key (1951)
- The Keeper of the Key: Being the Statement of Nayland Colum (1951)
- The Keeper of the Key: The Statement of Nayland Colum (1951)
- The Lair of the Star-Spawn (1932) with Mark Schorer
- The Lair of the Star-Spawn (1932) with August W. Derleth and Mark Schorer
- The Lamp of Alhazred (1957) with H. P. Lovecraft
- The Lilac Bush (1930)
- The Lilac Bush (1930) with August W. Derleth
- The Little Friend (1948) with August W. Derleth
- The Lonesome Place (1948)
- The Lonesome Place (1967) with August W. Derleth
- The Lost Day (1945)
- The Lost Kiss (1948)
- The Lost Path (1952)
- The Man from Dark Valley (1936)
- The Man from Dark Valley (1936) with August W. Derleth
- The Man on B-17 (1950)
- The Man on B-17 (1950) with Stephen Grendon
- The Man Who Rode the Saucer (1951)
- The Man Who Rode the Saucer (1951) with Kenyon Holmes
- The Mannikin (1967)
- The Marmoset (1926) with Mark Schorer
- The Marmoset (1926) with Marc R. Schorer
- The Marmoset (1926) with August W. Derleth and Marc R. Schorer
- The Martian Artifact (1957)
- The Maugham Obsession (1953)
- The Mechanical House (1954)
- The Metronome (1934)
- The Metronome (1934) with August W. Derleth
- The Mouse on the Train (1961)
- The Murky Glass (1957) with H. P. Lovecraft
- The Night Light at Vorden's (1942)
- The Night Rider (1927)
- The Night Rider (1927) with August W. Derleth
- The Night Road (1952)
- The Night Train to Lost Valley (1948)
- The Night Train to Lost Valley (1948) with Stephen Grendon
- The Occupant of the Crypt (1947) with Mark Schorer
- The Ormolu Clock (1950)
- The Other Cheek (1961)
- The Other Side of the Wall (1951)
- The Owl on the Moor (1928) with Mark Schorer
- The Owl on the Moor (1928) with Marc R. Schorer
- The Owl on the Moor (1928) with August W. Derleth and Marc R. Schorer
- The Pacer (1930) with August W. Derleth
- The Pacer (1930) with Mark Schorer
- The Pacer (1930) with August W. Derleth and Marc R. Schorer
- The Pacer (1930)
- The Panelled Room (1933)
- The Panelled Room (1937) with August W. Derleth
- The Passing of Eric Holm (1939)
- The Patchwork Quilt (1964)
- The Peabody Heritage (1957) with H. P. Lovecraft
- The Penfield Misadventure (1954)
- The Philosophers' Stone (1928)
- The Philosophers' Stone (1928) with August W. Derleth
- The Place in the Woods (1954)
- The Place of Desolation (1952)
- The Portrait (1930)
- The Portrait (1930) with August W. Derleth
- The Prince Goes West (excerpt) (1988)
- The Quince Bush (1961)
- The Remarkable Dingdong (1954)
- The Return of Andrew Bentley (1933) with Mark Schorer
- The Return of Andrew Bentley (1933) with August W. Derleth and Mark Schorer
- The Return of Hastur (1939)
- The Return of Hastur (1939) with August W. Derleth
- The Return of Sarah Purcell (1936)
- The Return of Sarah Purcell (1936) with August W. Derleth
- The Revolt of the Worm (1961)
- The River (1927)
- The River (1927) with August W. Derleth
- The River (1927) with Marc R. Schorer
- The Room in the Annex (1939)
- The Room in the Annex (1939) with Tally Mason
- The Sandwin Compact (1940)
- The Sandwin Compact (1940) with August W. Derleth
- The Satin Mask (1936)
- The Satin Mask (1936) with August W. Derleth
- The Seal of R'lyeh (1957)
- The Seal of the Damned (1957)
- The Second Print (1939)
- The Second Print (2009) with Tally Mason
- The Shadow in the Attic (1964) with H. P. Lovecraft
- The Shadow on the Sky (1932)
- The Shadow on the Sky (1932) with August W. Derleth
- The Shadow Out of Space (1957) with H. P. Lovecraft
- The Shadow Out of Space (1957) with August W. Derleth and H. P. Lovecraft
- The Shadow Out of Space (1957) with August W. Derleth
- The Sheraton Mirror (1932)
- The Sheraton Mirror (1932) with August W. Derleth
- The Shuttered House (1937)
- The Shuttered House (1937) with August W. Derleth
- The Shuttered Room (1959) with H. P. Lovecraft
- The Shuttered Room (1981) with H. P. Lovecraft
- The Shuttered Room (1995) with August W. Derleth
- The Shuttered Room (excerpt) (1964) with H. P. Lovecraft
- The Sisters (1948)
- The Slanting Shadow (1935)
- The Slanting Shadow (1935) with August W. Derleth
- The Slayers and the Slain (1949)
- The Sleepers (1927)
- The Sleepers (1927) with August W. Derleth
- The Snow-Thing (1941)
- The Song of the Pewee (1949)
- The Song of the Pewee (1949) with Stephen Grendon
- The Statement of Justin Parker (1928)
- The Statement of Justin Parker (1928) with August W. Derleth
- The Survivor (1954) with H. P. Lovecraft
- The Tail of the Dog (1961)
- The Telephone in the Library (1936)
- The Telephone in the Library (1936) with August W. Derleth
- The Telescope (1961)
- The Tenant (1928)
- The Tenant (1928) with August W. Derleth
- The Tenant at Number Seven (1928)
- The Tenant at Number Seven (1928) with August W. Derleth
- The Testament of Claiborne Boyd (1949)
- The Thing That Walked on the Wind (1933)
- The Thing That Walked on the Wind (1933) with August W. Derleth
- The Thinker and the Thought (1954)
- The Three Storied House (1928)
- The Three-Storied House (1928)
- The Three-Storied House (1928) with August W. Derleth
- The Trail of Cthulhu (1944)
- The Tsanta in the Parlor (1948)
- The Tsanta in the Parlor (1948) with Stephen Grendon
- The Tsanta in the Parlour (1948) with Stephen Grendon
- The Tsantsa in the Parlor (1948)
- The Tsantsa in the Parlor (1948) with Stephen Grendon
- The Turret Room (1927)
- The Turret Room (1927) with August W. Derleth
- The Turret Room (1927) with Marc R. Schorer
- The Ungrateful House (1954)
- The Valley Whippoorwill (1961)
- The Vanishing of Simmons (1933)
- The Vanishing of Simmons (1933) with August W. Derleth
- The Vengeance of Ai (1939) with Mark Schorer
- The Vengeance of Ai (1939) with Mark Schorer
- The Vengeance of Aï (1939) with Mark Schorer
- The Watcher from the Sky (1945)
- The Watcher from the Sky [2] (1945)
- The Watcher from the Sky: Being the Deposition of Abel Keane (1945)
- The Watcher from the Sky: The Deposition of Abel Keane (1945)
- The Watchers Out of Time (1974) with H. P. Lovecraft
- The Whippoorwills in the Hills (1948) with August W. Derleth
- The Whippoorwills in the Hills (1948)
- The Whistler (1930)
- The Whistler (1930) with August W. Derleth
- The White Moth (1933)
- The White Moth (1933) with August W. Derleth
- The Wind from the River (1937)
- The Wind from the River (1937) with August W. Derleth
- The Wind in the Lilacs (1948)
- The Wind in the Lilacs (1948) with Stephen Grendon
- The Woman at Loon Point (1936) with Mark Schorer
- The Woman at Loon Point (1936) with August W. Derleth and Mark Schorer
- They Shall Rise (1936) with Mark Schorer
- They Shall Rise (1936) with August W. Derleth and Mark Schorer
- Thinker, Mark VII (1954)
- Those Who Seek (1932)
- Those Who Seek (1932) with August W. Derleth
- Three Gentlemen in Black (1938)
- Three Gentlemen in Black (1938) with August W. Derleth
- Tourbillons de neige [French] (1978)
- Treibender Schnee [German] (1974) with Stephen Grendon
-
Trois messieurs vêtus de noir?Trois messieurs vetus de noir[French] (1970)
- Twilight Play (1949)
- Una elegía para el señor Danielson [Spanish] (1951)
- Una peluca para Sheila Devore [Spanish] (1951)
- Valse Oublieé (1948)
- Vignes sauvages [French] (1966)
- Walpurgisnacht (1961)
- Wentworth's Day (1957) with H. P. Lovecraft
- Where the Worm Dieth Not (1948)
- Wild Grapes (1934)
- Wild Grapes (1934) with August W. Derleth
- Witches' Hollow (1962) with H. P. Lovecraft
- Witches' Hollow (1962) with H. P. Lovecraft
- Wraiths of the Sea (1931)
- ¡Aquí, Daemos! [Spanish] (1951)
-
Кулата на Прилепа?Kulata na Prilepa[Bulgarian] (2004) withОгъст Дърлет?Ogast Darlet
-
Окно в башне?Okno v bashne[Russian] (1992) withГовард Ловекрафт?Govard Lovekraft
Howard Lovecraft
- "Neighbor to orchid and Solomon's seal," (1966)
- "Only Deserted"... (1937)
- "Only Deserted"... (1937) with August W. Derleth
- A Little Elegy for My Father (1967)
- Acorns on the Roof (1948)
- Apologia (1969)
- Bart Hinch (1945)
- Bluebirds (1936)
- Bluebirds (1936) with August W. Derleth
- Bonfire in the Woods (1948)
- Book Review (1947)
- Box-Social (1947)
- Bullheading (1947)
- Carp (1951)
- Cloudy (1947)
- Damming the Brook (1947)
- Dogs Barking (1948)
- Doughnuts (1947)
- Down to the Sea in Ships (1947)
- Dwellers in the Dark (1947)
- Elegy: In Providence the Spring... (1944)
- Espectros [Spanish] (2010)
- Firebell in the Night (1947)
- First Kiss (1947)
- First Scylla (1935)
- First Scylla (1935) with August W. Derleth
- Fish Rising (1947)
- Fox & Hounds (1947)
- Gem Opal (1969)
- Glowworms (1948)
- Half-Moon Night (1947)
- Hallowe'en (1947)
- Haunted House (1947)
- Hawk (1947)
- Heaven's Gate (1948)
- Horsehair Chair (1947)
- Houseboat (1947)
- Hunting Mushrooms (1988)
- Hylas (1971)
- I Gave My Heart to the Hawks (1962)
- Ice Skating (1947)
- Incubus (1934)
- Incubus (1934) with August W. Derleth
- Jacksnipe Over (1971)
- Jew's Harp Music (1947)
- Leaf Burning Time (1945)
- Leaf-Burning (1947)
- Lines with a Book (1969)
- Lois Malone (1945)
- Man and the Cosmos (1935)
- Man and the Cosmos (1935) with August W. Derleth
- Man at the Window (1941)
- Mark of Man, Mark of Beast (1941)
- Mecrampelis Lobata (1941)
- Merry Christmas - Happy New Year ("Coming home through falling snow,") (1988)
- Merry Christmas - Happy New Year ("Evening: new-fallen snow lies whitely over") (1988)
- Midnight Storm (1949)
- Modern Poetry (1969)
- Moon and Fog (1961)
- Moonlight (1969)
- Moonrise (1947)
- My Dog Spot (1947)
- My Owl (1948)
- New Moon (1947)
- New Moon Setting (1964)
- Night Mail (1947)
- Night-Haunt (1945)
- Nighthawk (1947)
- Nightmare (1965)
- Nigjt Train (1947)
- Nocturne: Marsh City (1956)
- Nutting (1947)
- O Ye of Little Faith (1947)
- Ode to Sauk-Prairie Dead (1938)
- Omega (1934)
- Omega (1934) with August W. Derleth
- On Reading Old Letters. For H.P.L. (1998)
- Pee Wee's Ride (1948)
- Picking Wildflowers (1988)
- Place-Ghost (1961)
- Playing at Dusk (1947)
- Providence: Two Gentlemen Meet at Midnight (1948)
- Rain on the Roof (1947)
- Recital (1947)
- Revenant (1950)
- Revenants (1959)
- Rite of Spring (1960)
- Rowing at Night (1947)
- Screech Owls (1947)
- Sherlock Holmes (1947)
- Smokewood (1947)
- Snow (1945)
- Someone at the Pasture Gate (1967)
- Something Left Behind (1971)
- Song of the Saw-Whet Owl (1934)
- Spring (1947)
- Spring Fever (1947)
- Spring Rain (1945)
- Stranger in the Night (1941)
- Streetlight Shadows (1948)
- Sunfishing (1947)
- Ted Birkett (1945)
- The Ambush (1947)
- The Belfry (1948)
- The Cabin in the Woods (1948)
- The Cellar Dweller (1948)
- The Collectors (1947)
- The Day After the Circus (1947)
- The Hanging Tree (1948)
- The Lamp (1947)
- The Leaf-Painter (1948)
- The Millpond Terror (1948)
- The Mystery Picture at the Old Electric (1948)
- The Old Frog Pond (1947)
- The Piano Lesson (1947)
- The Pool in the Wood (1949)
- The Scissor Grinder (1947)
- The Shores of Night (1947)
- The Soap-Coupon Telescope (1948)
- The Sparrow in the Willows (1948)
- The Stereopticon in Grandma's Parlor (1947)
- Thoreau: A Different Drummer (1969)
- Timber! (1947)
- To a Spaceship (1934)
- Treasure (1947)
- Turtling (1947)
- Weldon House (1942)
- Westward Passage (1935)
- Where Childhood Lingers (1956)
- Whistling in the Dark (1947)
- Winter Meadow (1964)
- Witch Hazel on Halloween (1948)
- Woods at Night (1947)
- Woods Music (1945)
- "The Shuttered Room" on Film (1968)
- "The Shuttered Room" on Film (1968) with uncredited
- 'Sac Prairie' (1993)
- A Base of Operations: Place of Hawks (1993)
- A Bok Folio (1967)
- A Bok Folio (1967) with uncredited
- A Cautionary Word (1963)
- A Final Collection of Smith's Tales (1969)
- A Final Collection of Smith's Tales (1969) with uncredited
- A Lovecraft Revision (1969)
- A Lovecraft Revision (1969) with uncredited
- A Map of Arkham (1970)
- A Map of Arkham (1970) with uncredited
- A Master of the Macabre (1996)
- A Mixed Bag (1949)
- A Near Catastrophe (1970)
- A Near Catastrophe (1970) with uncredited
- A Note About The Outsider and Others (1940)
- A Note for the Aficionado (1952)
- A Note on the Cthulhu Mythos (1962)
- A Prefatory Note (1949)
- A Selected Shelf of Fantasy (1949)
- A Word from Dr. Lyndon Parker (1945)
- About "The Shuttered Room" in Paperback (1967)
- About "The Shuttered Room" in Paperback (1967) with uncredited
- Afterword (New Poetry Out of Wisconsin) (1969)
- Afterword (The Casebook of Solar Pons) (1965)
- An Arkham Warehouse (1969)
- An Arkham Warehouse (1969) with uncredited
- An Autobiography (1996)
- An Introduction to H. P. Lovecraft (The Haunter of the Dark) (1951)
- Anthony Boucher (1968)
- Anthony Boucher (1968) with uncredited
- Appendix: August Derleth's Science Fiction Anthologies (1999)
- Arkham House Enters Its Third Decade (1960)
- Arkham House Faces Its Eighth Year (1945)
- Arkham House in 1969 (1969)
- Arkham House in 1969 (1969) with uncredited
- Arkham House in London (1968)
- Arkham House in London (1968) with uncredited
- Arkham House vs. Mycroft & Moran (1968)
- Arkham House vs. Mycroft & Moran (1968) with uncredited
- Arkham House: 1939-1969 (1970)
- Arkham House: A Thumbnail Story (1950)
- Associational (The Arkham Collector, Winter 1971) (1971)
- Associational (The Arkham Collector, Winter 1971) (1971) with uncredited
- Associational Items (The Arkham Collector, Summer 1970) [1] (1970)
- Associational Items (The Arkham Collector, Summer 1970) [1] (1970) with uncredited
- Associational Items (The Arkham Collector, Summer 1970) [2] (1970)
- Associational Items (The Arkham Collector, Summer 1970) [2] (1970) with uncredited
- Back to Praed Street (1968)
- Back to Praed Street (1968) with uncredited
- Bibliographical (The Arkham Collector, Summer 1971) (1971)
- Bibliographical (The Arkham Collector, Summer 1971) (1971) with uncredited
- Bibliographical (The Arkham Collector, Winter 1969) (1969)
- Bibliographical (The Arkham Collector, Winter 1969) (1969) with uncredited
- Bibliographical Notes (The Arkham Collector, Spring 1971) (1971)
- Bibliographical Notes (The Arkham Collector, Spring 1971) (1971) with uncredited
- Bibliographical Notes (The Arkham Collector, Summer 1967) (1967)
- Bibliographical Notes (The Arkham Collector, Summer 1967) (1967) with uncredited
- Bibliographical Notes (The Arkham Collector, Summer 1968) (1968)
- Bibliographical Notes (The Arkham Collector, Summer 1968) (1968) with uncredited
- Bibliographical Notes (The Arkham Collector, Summer 1969) (1969)
- Bibliographical Notes (The Arkham Collector, Summer 1969) (1969) with uncredited
- Bibliographical Notes (The Arkham Collector, Winter 1968) (1968)
- Bibliographical Notes (The Arkham Collector, Winter 1968) (1968) with uncredited
- Bibliographical Notes (The Arkham Collector, Winter 1970) (1970)
- Bibliographical Notes (The Arkham Collector, Winter 1970) (1970) with uncredited
- Bibliographical Notes (When Evil Wakes) (1963)
- Books of Magical Lore (1948)
- Brian Lumley's First Book (1970)
- Brian Lumley's First Book (1970) with uncredited
- By Way of Introduction (Beyond the Wall of Sleep) (1943) with Donald Wandrei
- Clark Ashton Smith: Master of Fantasy (1942) with Donald Wandrei
- Clifford M. Eddy (1968)
- Clifford M. Eddy (1968) with uncredited
- Colin Wilson (1967)
- Colin Wilson (1967) with uncredited
- Coming Books (The Arkham Collector, Summer 1968) (1968)
- Coming Books (The Arkham Collector, Summer 1968) (1968) with uncredited
- Coming Books (The Arkham Collector, Winter 1971) (1971)
- Coming Books (The Arkham Collector, Winter 1971) (1971) with uncredited
- Concerning Dr. Parker's Background (1968)
- Country Calendar: (Passenger Pigeon, Autumn 1952) (1952)
- Country Calendar: Spring... (The Passenger Pigeon, Winter 1957) (1957)
- Country Calendar: Winter (The Passenger Pigeon, Summer 1952) (1952)
- Coye Illustrates Lovecraft (1967)
- Coye Illustrates Lovecraft (1967) with uncredited
- De Cthulhu-mythologie [Dutch] (1974) with August W. Derleth
- Demons and Dinosaurs (1970)
- Demons and Dinosaurs (1970) with uncredited
- Denis Tiani (1971)
- Denis Tiani (1971) with uncredited
- Dictionnaire des auteurs (La chose des ténèbres) [French] (1989) with Jacques Goimard
-
Dictionnaire des auteurs (La chose des ténèbres)?Dictionnaire des auteurs (La chose des tenebres)[French] (1989) with A. Derleth and Jacques Goimard
- Dr. Keller's Last Collection (1969)
- Dr. Keller's Last Collection (1969) with uncredited
- Dunwich Productions, Inc. (1968)
- Dunwich Productions, Inc. (1968) with uncredited
- Dwig—and Bill, the Eternal Boy (1945)
- E. Hoffmann Price (1967)
- E. Hoffmann Price (1967) with uncredited
- Early Tales (1965)
- Editor's Note (Autobiography: Some Notes on a Nonentity) (1963)
- Editor's Note (Juvenilia and Early Tales) (1959)
- Eight Tales (1971)
- Eight Tales (1971) with uncredited
- Einführung (Die Literatur des Grauens) [German] (1985)
- Excerpts from Cthulhu in the Necronomicon (1967) with Professor Laban Shrewsbury
- Excerpts from Cthulhu in the Necronomicon (1968)
- Final Notes (The Dark Brotherhood and Other Pieces) (1966)
- Foreword (Collected Poems) (1963)
- Foreword (Colonel Markesan and Less Pleasant People) (1966) with Mark Schorer
- Foreword (Dark Mind, Dark Heart) (1962)
- Foreword (Deep Waters) (1967)
- Foreword (Evening in Spring) (1945)
- Foreword (Fantastic Novels: A Check List) (1957)
- Foreword (Green Tea and Other Ghost Stories) (1945)
- Foreword (Marginalia) (1944) with Donald Wandrei
- Foreword (Night's Yawing Peal) (1951)
- Foreword (Not Long for This World) (1948)
- Foreword (Over the Edge) (1964)
- Foreword (Skull Face) (1976)
- Foreword (Skull-Face and Others) (1946)
- Foreword (Sleep No More) (1944)
- Foreword (The Night Side) (1947)
- Foreword (The Outer Reaches) (1951)
- Foreword (The Shuttered Room) (1959)
- Foreword (The Unspeakable People) (1969)
- Foreword (Time to Come) (1954)
- Foreword (Who Knocks?) (1946)
- Foreword to Evening in Spring (1945)
- Four Fragments (1965)
- From "The Village Year" (1988)
- From "Walden West" (1988)
- From the Fan Presses (1948)
- Gary Myers (1970)
- Gary Myers (1970) with uncredited
- Ghosts in Great Britain (1948)
- H. P. L.: Two Decades After (1958)
- H. P. Lovecraft & Science Fiction (1967) with H. P. Lovecraft
- H. P. Lovecraft & Science Fiction (1967) with H. P. Lovecraft and uncredited
- H. P. Lovecraft and His Work (1963)
- H. P. Lovecraft, Outsider (1937)
- H. P. Lovecraft: A Symposium (1997) with Robert Bloch and Arthur Jean Cox and Fritz Leiber and Sam Russell and Leland Sapiro
- H. P. Lovecraft—Outsider (1996)
- H.P. Lovecraft's Novels (1964)
- History and Chronology of the Necronomicon Together with Some Pertinent Paragraphs (1948) with H. P. Lovecraft
- Homage to Vincent Starrett (1968)
- Howard Phillips Lovecraft: Outsider (1939) with Donald Wandrei
- Hugo Gernsback (1968)
- Hugo Gernsback (1968) with uncredited
- I Never (1988)
- I Never (1988) with Derleth
- I Wish I'd Written "The Rats in the Walls" (1996)
- Introduction (Beachheads in Space) (1952)
- Introduction (Beyond Time and Space) (1950)
- Introduction (Dagon and Other Macabre Tales) (1965)
- Introduction (Dark of the Moon) (1947)
- Introduction (Dreams and Fancies) (1962)
- Introduction (Far Boundaries) (1951)
- Introduction (Fire and Sleet and Candlelight) (1961)
- Introduction (Mr. George and Other Odd Persons) (1963)
- Introduction (New Poetry Out of Wisconsin) (1969)
- Introduction (Portals of Tomorrow) (1954)
- Introduction (Strange Ports of Call) (1948)
- Introduction (Supernatural Horror in Literature) (1945)
- Introduction (The Dark Brotherhood and Other Pieces) (1965)
- Introduction (The Dark Man and Others) (1963)
- Introduction (The Dunwich Horror and Other Weird Tales) (1945)
- Introduction (The Haunter of the Dark) (1951)
- Introduction (The Mask of Cthulhu) (1958)
- Introduction (The Other Side of the Moon) (1949)
- Introduction (The Purcell Papers) (1975)
- Introduction (The Satanists) (1970)
- Introduction (The Sleeping and the Dead) (1947)
- Introduction (When Graveyards Yawn) (1965)
- Introduction (Worlds of Tomorrow) (1953)
- Introduction: H. P. Lovecraft's Novels (1968)
- Introduction: Strange Ports of Call (1948)
- Jamesian Spectres (1949)
- Le mythe de Cthulhu [French] (1972)
-
Les "révisions" de Lovecraft?Les "revisions" de Lovecraft[French] (1975)
- Letter (Astounding Stories, May 1936): In the June Issue: (1936)
- Letter (Astounding Stories, May 1936): In the June Issue: (1936) with August W. Derleth
- Letter (Astounding, May 1949) (1949)
- Letter (Emperor of Dreams: A Clark Ashton Smith Bibliography) (1978)
- Letter (Famous Fantastic Mysteries, April 1948): August Derleth Replies (1948)
- Letter (Famous Fantastic Mysteries, December 1947): Correction by August Derleth (1947)
- Letter (Fantasy Review, October-November 1948) (1948)
- Letter (Future Combined with Science Fiction, December 1941) (1941)
- Letter (Future Combined with Science Fiction, December 1941) (1941) with August W. Derleth
- Letter (Futurian War Digest, August 1944): Arkham House (1944)
- Letter (Magazine of Horror, March 1969) (1969)
- Letter (Magazine of Horror, Spring 1967) (1967)
- Letter (Spaceways, August 1939) (1939) with Donald Wandrei
- Letter (Startling Stories, November 1939): To All Friends and Fans of the Late Howard Phillips Lovecraft (1939) with Donald Wandrei
- Letter (Startling Stories, November 1939): To All Friends and Fans of the Late Howard Phillips Lovecraft (1939) with August W. Derleth and Donald Wandrei
- Letter (Strange Tales of Mystery and Terror, January 1933): Expert Opinion (1933)
- Letter (The Acolyte, Summer 1944) (1944)
- Letter (The Acolyte, Summer 1944) [2] (1944)
- Letter (The Baum Bugle, March 1958): Oz in Cartoon Form (1958)
- Letter (The Fantast, December 1941) (1941)
- Letter (The Fantasy Fan, April 1934) (1934)
- Letter (The Fantasy Fan, April 1934) (1934) with August W. Derleth
- Letter (The Fantasy Fan, February 1934) (1934)
- Letter (The Fantasy Fan, February 1934) (1934) with August W. Derleth
- Letter (The Fantasy Fan, October 1933) (1933)
- Letter (The Fantasy Fan, October 1933) (1933) with August W. Derleth
- Letter (The Fantasy Fan, October 1933) (1933) with August W. Derleth
- Letter (The Fantasy Fan, October 1933) [2] (1933)
- Letter (The Fantasy Fan, October 1933) [2] (1933) with August W. Derleth
- Letter (The Ghost, #3 May 1945) (1945)
- Letter (Weird Tales, February 1926) (1926)
- Letter (Weird Tales, February 1926) (1926) with August Derleth, Jr.
- Letter (Weird Tales, February 1928) (1928)
- Letter (Weird Tales, February 1928) (1928) with August W. Derleth
- Letter (Weird Tales, February 1937): Brief Comments (1937)
- Letter (Weird Tales, February 1937): Brief Comments (1937) with August W. Derleth
- Letter (Weird Tales, January 1942): Outstanding Service (1942)
- Letter (Weird Tales, July 1932) (1932)
- Letter (Weird Tales, July 1932) (1932) with August W. Derleth
- Letter (Weird Tales, June 1926) (1926)
- Letter (Weird Tales, June 1926) (1926) with August Derleth, Jr.
- Letter (Weird Tales, March 1926) (1926)
- Letter (Weird Tales, March 1926) (1926) with August Derleth, Jr.
- Letter (Weird Tales, March 1944) (1979)
- Letter (Weird Tales, March 1944): Nearing the Century Mark (1944)
- Letter (Weird Tales, March 1948): 25th Anniversary Issue (1948)
- Letter (Weird Tales, May 1941): The Lovecraft Tradition (1941) with Donald Wandrei
- Letter (Weird Tales, September 1927) (1927)
- Letter (Weird Tales, September 1927) (1927) with August W. Derleth
- Letter to Charles Partington, May 15, 1969 (2005)
- Letter to Charles Partington, May 26, 1971 (2005)
- Letter to Charles Partington, May 28, 1970 (2005)
- Letter to Dr. I. M. Howard, April 21, 1937 (2011)
- Letter to Dr. I. M. Howard, February 1, 1944 (2011)
- Letter to Ramsey Campbell, [late July, 1963] (2014)
- Letter to Ramsey Campbell, [Postmarked Sauk City, Wis., December 9, 1963] (2014)
- Letter to Ramsey Campbell, [Postmarked Sauk City, Wis., February 4, 1964] (2014)
- Letter to Ramsey Campbell, April 12, 1964 (2014)
- Letter to Ramsey Campbell, April 15, 1965 (2014)
- Letter to Ramsey Campbell, April 17, 1963 (2014)
- Letter to Ramsey Campbell, April 21, 1966 (2014)
- Letter to Ramsey Campbell, April 23, 1962 (2014)
- Letter to Ramsey Campbell, April 24, 1963 (2014)
- Letter to Ramsey Campbell, April 27, 1962 (2014)
- Letter to Ramsey Campbell, April 27, 1965 (2014)
- Letter to Ramsey Campbell, April 28, 1962 (2014)
- Letter to Ramsey Campbell, April 30, 1964 (2014)
- Letter to Ramsey Campbell, April 30, 1971 (2014)
- Letter to Ramsey Campbell, April 9, 1963 (2014)
- Letter to Ramsey Campbell, August 1, 1963 (2014)
- Letter to Ramsey Campbell, August 1, 1965 (2014)
- Letter to Ramsey Campbell, August 17, 1970 (2014)
- Letter to Ramsey Campbell, August 19, 1961 (2011)
- Letter to Ramsey Campbell, August 21, 1964 (2014)
- Letter to Ramsey Campbell, August 21, 1965 (2014)
- Letter to Ramsey Campbell, August 23, 1962 (2014)
- Letter to Ramsey Campbell, August 23, 1963 (2014)
- Letter to Ramsey Campbell, August 26, 1961 (2014)
- Letter to Ramsey Campbell, August 26, 1967 (2014)
- Letter to Ramsey Campbell, August 31, 1966 (2014)
- Letter to Ramsey Campbell, August 6, 1964 (2014)
- Letter to Ramsey Campbell, August 9, 1962 (2014)
- Letter to Ramsey Campbell, August 9, 1963 (2014)
- Letter to Ramsey Campbell, December 17, 1964 (2014)
- Letter to Ramsey Campbell, December 18, 1965 (2014)
- Letter to Ramsey Campbell, December 19, 1963 (2014)
- Letter to Ramsey Campbell, December 2, 1963 (2014)
- Letter to Ramsey Campbell, December 20, 1962 (2014)
- Letter to Ramsey Campbell, December 23, 1961 (2014)
- Letter to Ramsey Campbell, December 28, 1970 (2014)
- Letter to Ramsey Campbell, December 3, 1964 (2014)
- Letter to Ramsey Campbell, December 4, 1961 (2014)
- Letter to Ramsey Campbell, December 4, 1962 (2014)
- Letter to Ramsey Campbell, December 5, 1963 (2014)
- Letter to Ramsey Campbell, February 15, 1962 (2014)
- Letter to Ramsey Campbell, February 17, 1967 (2014)
- Letter to Ramsey Campbell, February 21, 1964 (2014)
- Letter to Ramsey Campbell, February 21, 1965 (2014)
- Letter to Ramsey Campbell, February 27, 1962 (2014)
- Letter to Ramsey Campbell, February 28, 1968 (2014)
- Letter to Ramsey Campbell, February 3, 1966 (2014)
- Letter to Ramsey Campbell, February 6, 1964 (2014)
- Letter to Ramsey Campbell, February 7, 1962 ("All thanks for yours of the first.") (2011)
- Letter to Ramsey Campbell, February 7, 1962 ("Yours of the 2nd crossed my reply to your MS. of earlier today—") (2014)
- Letter to Ramsey Campbell, February 8, 1965 (2014)
- Letter to Ramsey Campbell, January 1, 1964 (2014)
- Letter to Ramsey Campbell, January 1, 1965 (2014)
- Letter to Ramsey Campbell, January 14, 1966 (2014)
- Letter to Ramsey Campbell, January 15, 1962 (2014)
- Letter to Ramsey Campbell, January 17, 1964 (2014)
- Letter to Ramsey Campbell, January 18, 1963 (2014)
- Letter to Ramsey Campbell, January 2, 1962 (2014)
- Letter to Ramsey Campbell, January 20, 1965 (2014)
- Letter to Ramsey Campbell, January 21, 1966 (2014)
- Letter to Ramsey Campbell, January 22, 1962 (2014)
- Letter to Ramsey Campbell, January 24, 1962 (2014)
- Letter to Ramsey Campbell, January 3, 1963 (2014)
- Letter to Ramsey Campbell, July 16, 1970 (2014)
- Letter to Ramsey Campbell, July 19, 1962 (2014)
- Letter to Ramsey Campbell, July 20, 1963 (2014)
- Letter to Ramsey Campbell, July 25, 1963 ("I have finally finished reading the MS. of your stories,") (2011)
- Letter to Ramsey Campbell, July 25, 1963 ("Yours of the 20th crossed mine of today...") (2014)
- Letter to Ramsey Campbell, July 26, 1962 (2014)
- Letter to Ramsey Campbell, July 26, 1964 (2014)
- Letter to Ramsey Campbell, July 30, 1967 (2014)
- Letter to Ramsey Campbell, July 4, 1964 (2014)
- Letter to Ramsey Campbell, July 8, 1966 (2014)
- Letter to Ramsey Campbell, June 11, 1964 (2014)
- Letter to Ramsey Campbell, June 16, 1963 (2014)
- Letter to Ramsey Campbell, June 19, 1962 (2014)
- Letter to Ramsey Campbell, June 23, 1970 (2014)
- Letter to Ramsey Campbell, June 26, 1965 (2014)
- Letter to Ramsey Campbell, June 29, 1962 (2014)
- Letter to Ramsey Campbell, June 7, 1962 (2014)
- Letter to Ramsey Campbell, June 7, 1963 (2014)
- Letter to Ramsey Campbell, March 11, 1965 (2014)
- Letter to Ramsey Campbell, March 12, 1964 (2014)
- Letter to Ramsey Campbell, March 17, 1962 (2014)
- Letter to Ramsey Campbell, March 17, 1967 (2014)
- Letter to Ramsey Campbell, March 20, 1963 (2014)
- Letter to Ramsey Campbell, March 20, 1964 (2014)
- Letter to Ramsey Campbell, March 21, 1971 (2014)
- Letter to Ramsey Campbell, March 3, 1966 (2014)
- Letter to Ramsey Campbell, March 31, 1964 (2014)
- Letter to Ramsey Campbell, March 31, 1966 (2014)
- Letter to Ramsey Campbell, March 4, 1964 (2014)
- Letter to Ramsey Campbell, March 7, 1963 (2014)
- Letter to Ramsey Campbell, March 8, 1962 (2014)
- Letter to Ramsey Campbell, May 11, 1962 (2014)
- Letter to Ramsey Campbell, May 14, 1962 (2014)
- Letter to Ramsey Campbell, May 16, 1963 (2014)
- Letter to Ramsey Campbell, May 16, 1964 (2014)
- Letter to Ramsey Campbell, May 17, 1965 (2014)
- Letter to Ramsey Campbell, May 20, 1965 (2014)
- Letter to Ramsey Campbell, May 21, 1962 (2014)
- Letter to Ramsey Campbell, May 21, 1970 (2014)
- Letter to Ramsey Campbell, May 24, 1962 (2014)
- Letter to Ramsey Campbell, May 24, 1966 (2014)
- Letter to Ramsey Campbell, May 24, 1971 (2014)
- Letter to Ramsey Campbell, May 28, 1964 (2014)
- Letter to Ramsey Campbell, May 29, 1963 (2014)
- Letter to Ramsey Campbell, May 6, 1963 (2014)
- Letter to Ramsey Campbell, November 12, 1963 (2014)
- Letter to Ramsey Campbell, November 17, 1970 (2014)
- Letter to Ramsey Campbell, November 18, 1965 (2014)
- Letter to Ramsey Campbell, November 20, 1961 (2014)
- Letter to Ramsey Campbell, November 21, 1964 (2014)
- Letter to Ramsey Campbell, November 25, 1963 (2014)
- Letter to Ramsey Campbell, November 3, 1970 (2014)
- Letter to Ramsey Campbell, November 30, 1968 (2014)
- Letter to Ramsey Campbell, November 4, 1961 (2014)
- Letter to Ramsey Campbell, November 7, 1964 (2014)
- Letter to Ramsey Campbell, November 8, 1962 (2014)
- Letter to Ramsey Campbell, October 12, 1961 (2014)
- Letter to Ramsey Campbell, October 16, 1964 (2014)
- Letter to Ramsey Campbell, October 18, 1961 (2011)
- Letter to Ramsey Campbell, October 21, 1965 (2014)
- Letter to Ramsey Campbell, October 23, 1961 (2014)
- Letter to Ramsey Campbell, October 25, 1961 (2014)
- Letter to Ramsey Campbell, October 26, 1963 (2014)
- Letter to Ramsey Campbell, October 29, 1964 (2014)
- Letter to Ramsey Campbell, October 4, 1963 (2014)
- Letter to Ramsey Campbell, October 6, 1961 (2011)
- Letter to Ramsey Campbell, October 8, 1965 (2014)
- Letter to Ramsey Campbell, September 11, 1963 (2014)
- Letter to Ramsey Campbell, September 17, 1970 (2014)
- Letter to Ramsey Campbell, September 18, 1963 (2014)
- Letter to Ramsey Campbell, September 20, 1966 (2014)
- Letter to Ramsey Campbell, September 24, 1963 (2014)
- Letter to Ramsey Campbell, September 26, 1962 (2014)
- Letter to Ramsey Campbell, September 27, 1961 (2014)
- Letter to Ramsey Campbell, September 30, 1964 (2014)
- Letter to Ramsey Campbell, September 4, 1963 (2014)
- Letter to Ramsey Campbell, September 4, 1964 (2014)
- Letter to Ramsey Campbell, September 5, 1962 (2014)
- Letter to Ramsey Campbell, September 9, 1961 (2014)
- Letter to Ramsey Campbell, September 9, 1968 (2014)
- Letter to Ramsey Campbell, Year's End, 1966 (2014)
- Letter to Robert E. Howard, June 8, 1935 (2011)
- Letter to Robert E. Howard, June 8, 1935 (2011) with August
- Letter to Robert E. Howard, March 13, 1933 (2011)
- Letter to Robert E. Howard, March 13, 1933 (2011) with AWD
- Letter to Sam Moskowitz, December 30, 1970 (2009)
- Letter to Sam Moskowitz, November 19, 1946 (2009)
- Letter, 29 May, 1946 (to Mrs. Bohn) (1988)
- Letter, December 25, (to Judge Bohn) (1988)
- Letter, December 25, (to Judge Bohn) (1988) with August W. Derleth
- Letter: On Book Sales (1959)
- Letter: Weird Tales Sell Best (Fantasy Review, December 1947-January 1948) (1947)
- Looking Ahead (1971)
- Looking Ahead (1971) with uncredited
- Lovecraft as a Formative Influence (1944)
- Lovecraft as Mentor (1959)
- Lovecraft in France (1971)
- Lovecraft in France (1971) with uncredited
- Lovecraft's "Conservative" (1949)
- Lovecraft's "Revisions" (1970)
- Lovecraft's Sensitivity (1949)
- Messrs. Sturgeon, Williamson & DeCamp (1949)
- Mid-Period Pieces (1951)
- More of Walden West (1970)
- More of Walden West (1970) with uncredited
- Necrology (The Arkham Collector, Spring 1971) (1971)
- Necrology (The Arkham Collector, Spring 1971) (1971) with uncredited
- Necrology (The Arkham Collector, Summer 1967) (1967)
- Necrology (The Arkham Collector, Summer 1967) (1967) with uncredited
- Necrology (The Arkham Collector, Summer 1970) (1970)
- Necrology (The Arkham Collector, Summer 1970) (1970) with uncredited
- Necrology (The Arkham Collector, Winter 1970) (1970)
- Necrology (The Arkham Collector, Winter 1970) (1970) with uncredited
- Necrology (The Arkham Collector, Winter 1971) (1971)
- Necrology (The Arkham Collector, Winter 1971) (1971) with uncredited
- Nelson Bond's New Stories (1949)
- Nightmares and Daydreams (1967)
- Nightmares and Daydreams (1967) with uncredited
- Novels at 10,000 Words a Day (1934)
- Of Brian Lumley (1968)
- Of Brian Lumley (1968) with uncredited
- Of Miles Pennoyer (1968)
- Of Miles Pennoyer (1968) with uncredited
- Of William Hope Hodgson (1969)
- Of William Hope Hodgson (1969) with uncredited
- Old Friends Meet Again (1968)
- Old Friends Meet Again (1968) with uncredited
- On "The Lurker at the Threshold" (1948)
- On Publication Dates (1967)
- On Publication Dates (1967) with uncredited
- On Writing Poetry (1942)
- Original Introduction to The Mask of Cthulhu (1997)
- Other Coming Books (The Arkham Collector, Summer 1970) (1970)
- Other Coming Books (The Arkham Collector, Summer 1970) (1970) with uncredited
- Praise for Basil Copper (2008)
- Preface (Selected Letters: 1911—1924) (1965) with Donald Wandrei
- Preface (Selected Letters: 1925—1929) (1968) with Donald Wandrei
- Preface (Selected Letters: 1929—1931) (1971) with Donald Wandrei
- Primitives (1951)
- Prologue (Return to Walden West) (1970)
- Préface des Premiers contes [French] (1991)
- Return to Walden West (excerpt) (1988)
- Rising Costs (1971)
- Rising Costs (1971) with uncredited
- Schedule Changes (1971)
- Schedule Changes (1971) with uncredited
- Scientibook Review (Thrilling Wonder Stories, April 1940) (1940)
- Scientibook Review (Thrilling Wonder Stories, April 1940) (1940) with Eldon Heath
- Selected Letters III (1970)
- Selected Letters III (1970) with uncredited
- Solar Pons, Off-Trail (1968)
- Something About Howard Phillips Lovecraft (1945)
- Songs and Sonnets Atlantean (1971)
- Songs and Sonnets Atlantean (1971) with uncredited
- Studies in Murder (1948)
- Tales of the Cthulhu Mythos (1968)
- Tales of the Cthulhu Mythos (1968) with uncredited
- The 1970 Program (1970)
- The 1970 Program (1970) with uncredited
- The Arkham Collector (1967)
- The Arkham Collector (1967) with uncredited
- The Arkham House Story (1952)
- The Arkham Program (1968)
- The Arkham Program (1968) with uncredited
- The Art of Pastiche (1967)
- The Art of Pastiche (1967) with uncredited
- The Beginnings of Solar Pons (1968)
- The Building of Arkham House (1947)
- The Contemporary Scene (1951)
- The Cthulhu Mythos (1969)
- The Fantastic Story (excerpt from Writing Fiction) (1946)
- The Favorite Pastiches (1968)
- The First PSI Annual Dinner (1968)
- The First PSI Annual Dinner (1968) with uncredited
- The First Solar Pons Novel (1967)
- The First Solar Pons Novel (1967) with uncredited
- The Future of Arkham House (1956)
- The Horror in the Museum and Other Revisions (1970)
- The Horror in the Museum and Other Revisions (1970) with uncredited
- The Lovecraft Letters (1967)
- The Lovecraft Letters (1967) with uncredited
- The Lovecraft Memorial (1940) with Donald Wandrei
- The Macabre in Pictures (1948)
- The Machen Collection (1948)
- The Making of a Hoax (1966)
- The Mrs. Ann Radcliffe Literature Award (1967)
- The Mrs. Ann Radcliffe Literature Award (1967) with uncredited
- The Origin of a Lovecraft Essay (1968)
- The Origin of a Lovecraft Essay (1968) with uncredited
- The Pontine Dossier (1967)
- The Pontine Dossier (1967) with uncredited
- The Praed Street Irregulars (1967)
- The Praed Street Irregulars (1967) with uncredited
- The Projected Arkham House Program (1967)
- The Projected Arkham House Program (1967) with uncredited
- The Realm of Redonda (1949)
- The Shasta Checklist (1948)
- The Sources of the Tales (1968)
- The Weird Tale in English Since 1890 (1945)
- The Wheel Turns (1959)
- Thirty Years of Arkham House (1969)
- Thirty Years of Arkham House (1969) with uncredited
- Three Stories (introduction) (1966)
- Two New Spring Books (1971)
- Two New Spring Books (1971) with uncredited
- Two Notes on Shiel's Style (1945)
- Two Novels and an Anthology (1948)
- untitled ("Certainly I echoed him when he wrote ...") (1988)
- Vorbemerkung (Die Masken des Cthulhu) [German] (2001)
- Walden West (excerpt) (1988)
- We Have With Us (Weird Tales, September 1953) (1953)
- What (1988)
- What (1988) with Derleth
- When the Night and House Are Still (1941)
- When the Night and House Are Still ... (1941)
- Where Black Hawk Roamed (1932)
- Where Black Hawk Roamed (1932) with August W. Derleth
- Wit and Satire (1948)
- A Martian Odyssey and Others (1949) by Stanley G. Weinbaum
- A Praed Street Dossier (1968) by August Derleth
- A Praed Street Dossier (1968) by August Derleth (co-reviewed with uncredited)
- Addams and Evil (1948) by Charles Addams
- Darker Than You Think (1949) by Jack Williamson
- Demons and Dinosaurs (1970) by L. Sprague de Camp
- Demons and Dinosaurs (1970) by L. Sprague de Camp (co-reviewed with uncredited)
- Descent Into Hell (1949) by Charles Williams
- Edison's Conquest of Mars (1948) by Garrett P. Serviss
- Eight Tales (1971) by Walter de la Mare
- Eight Tales (1971) by Walter de la Mare (co-reviewed with uncredited)
- Ghosts in Irish Houses (1948) by James Reynolds
- Greener Than You Think (1948) by Ward Moore
- Invasion from Mars (1949) by Orson Welles
- Lest Darkness Fall (1949) by L. Sprague de Camp
- Life on Other Worlds (1949) by H. Spencer Jones
- Man Into Beast: Strange Tales of Transformation (1948) by A. C. Spectorsky
- Many Dimensions (1949) by Charles Williams
- Mr. Fairlie's Final Journey (1967) by August Derleth
- Mr. Fairlie's Final Journey (1967) by August Derleth (co-reviewed with uncredited)
- Murder: Plain and Fanciful (1948) by James Sandoe
- Nightmares and Daydreams (1967) by Nelson Bond
- Nightmares and Daydreams (1967) by Nelson Bond (co-reviewed with uncredited)
- Not Exactly Ghosts (1948) by Sir Andrew Caldecott
- Number Seven, Queer Street (1968) by Margery Lawrence
- Number Seven, Queer Street (1968) by Margery Lawrence (co-reviewed with uncredited)
- Of Worlds Beyond: The Science of Science-Fiction Writing (1948) by Lloyd Arthur Eshbach
- Other Dimensions (1969) by Clark Ashton Smith
- Other Dimensions (1969) by Clark Ashton Smith (co-reviewed with uncredited)
- Selected Letters, 1929-1931 (1970) by H. P. Lovecraft
- Selected Letters, 1929-1931 (1970) by H. P. Lovecraft (co-reviewed with uncredited)
- Songs and Sonnets Atlantean (1971) by Donald S. Fryer
- Songs and Sonnets Atlantean (1971) by Donald S. Fryer (co-reviewed with uncredited)
- Strange Gateways (1967) by E. Hoffmann Price
- Strange Gateways (1967) by E. Hoffmann Price (co-reviewed with uncredited)
- Tales of Horror and the Supernatural (1948) by Arthur Machen
- Tales of the Cthulhu Mythos (1968) by August Derleth
- Tales of the Cthulhu Mythos (1968) by August Derleth (co-reviewed with uncredited)
- The Best Science-Fiction Stories: 1949 (1949) by T. E. Dikty and Everett F. Bleiler
- The Big Eye (1949) by Max Ehrlich
- The Caller of the Black (1970) by Brian Lumley
- The Caller of the Black (1970) by Brian Lumley (co-reviewed with uncredited)
- The Checklist of Fantastic Literature (1948) by Everett Bleiler and Melvin Korshak
- The Dowry (1949) by Maggy Gould
- The End of the World (1949) by Geoffrey Dennis
- The Exploits of Chevalier Dupin (1967) by Michael Harrison
- The Exploits of Chevalier Dupin (1967) by Michael Harrison (co-reviewed with uncredited)
- The Folsom Flint and Other Curious Tales (1969) by David H. Keller
- The Folsom Flint and Other Curious Tales (1969) by David H. Keller (co-reviewed with uncredited)
- The Forbidden Garden (1948) by John Taine
- The Ghostly Tales of Henry James (1949) by Henry James
- The Histrionic Mr. Poe (1949) by N. Bryllion Fagin
- The Horror in the Museum and Other Revisions (1970) by H. P. Lovecraft
- The Horror in the Museum and Other Revisions (1970) by H. P. Lovecraft (co-reviewed with uncredited)
- The Mind Parasites (1967) by Colin Wilson
- The Mind Parasites (1967) by Colin Wilson (co-reviewed with uncredited)
- The Mirror of Magic: A History of Magic in the Western World (1948) by Kurt Seligmann
- The Murder of Maria Marten (1948) by J. Curtis and Jeanne MacKenzie and Norman MacKenzie
- The Outsider and Others (1940) by H. P. Lovecraft
- The Outsider and Others (1940) by H. P. Lovecraft (co-reviewed with Eldon Heath)
- The Prevalence of Witches (1948) by Aubrey Menen
- The Shuttered Room (1967) by Julia Withers
- The Shuttered Room (1967) by Julia Withers (co-reviewed with uncredited)
- The Thirty-First of February (1949) by Nelson Bond
- The Travelling Grave and Other Stories (1948) by L. P. Hartley
- The Wheels of If (1949) by L. Sprague de Camp
- Thirty Years of Arkham House (1969) by August Derleth
- Thirty Years of Arkham House (1969) by August Derleth (co-reviewed with uncredited)
- Three Tales of Horror (1967) by H. P. Lovecraft
- Three Tales of Horror (1967) by H. P. Lovecraft (co-reviewed with uncredited)
- Venus Equilateral (1948) by George O. Smith
- War in Heaven (1949) by Charles Williams
- What Am I Doing Here? (1948) by Abner Dean
- Witches and Fishes (1948) by Sir Hesketh Bell
- Without Sorcery (1949) by Theodore Sturgeon
- Zotz! (1948) by Walter Karig
Non-Genre Titles
Novels
- Any Day Now (1938)
- Bright Journey (1940)
- Death Stalks the Wakely Family (1937)
- Evening in Spring (1941)
- Fell Purpose (1953)
- Mischief in the Lane (1944)
- Murder Stalks the Wakely Family (1934)
- No Future for Luana (1945)
- Restless Is the River (1939)
- Sentence Deferred (1939)
- Shadow of Night (1943)
- Sign of Fear (1935)
- Still Is the Summer Night (1937)
- The Ghost of Black Hawk Island (1961)
- The House by the River (1965)
- The House on the Mound (1958)
- The Man on All Fours (1934)
- The Moon Tenders (1958)
- The Narracong Riddle (1940)
- The Pinkertons Ride Again (1960)
- The Seven Who Waited (1943)
- The Shield of the Valiant (1945)
- The Three Straw Men (1970)
- Three Who Died (1935)
- Village Daybook: A Sac Prairie Journal (1947)
- Village Year: A Sac Prairie Journal (1941)
- Walden West (1961)
- A Boy's Way (1947)
- Aunt May Strikes Again! (1996)
- Country Growth (1940)
- It's a Boy's World (1948)
- Place of Hawks (1935)
- Place of Hawks (1935) with August W. Derleth
- Sac Prairie People (1948)
- Wisconsin in Their Bones (1961)
- New Poetry Out of Wisconsin (1969)
- Concord Rebel: A Life of Thoreau (1962)
- Return to Walden West (1970)
- Wisconsin Country: A Sac Prairie Journal (1965)
- Wisconsin Murders (1968)
- A Man Needs a Woman (1940)
- A Ride Home (1934)
- Any Day Now (1940)
- Aunt May and the Refugees (1948)
- Buck in the Bottoms (1940)
- Country Growth (1940)
- Crows Fly High (1940)
- Ellie Butts (1948)
- Farway House (1935)
- Farway House (1935) with August W. Derleth
- Five Alone (1935)
- Five Alone (1935) with August W. Derleth
- Fr. Lauren (1952)
- From "Shield of the Valiant" (1988)
- Frost in October (1940)
- Geese Flying South (1940)
- Girl in Time Lost (1940)
- Good-bye, Margery (1940)
- Hawk on the Blue (1940)
- Holiday for Three (1940)
- Mrs. Spinnet (1940)
- Nine Strands in a Web (1935)
- Nine Strands in a Web (1935) with August W. Derleth
- Old Huckleberry (1940)
- Place of Hawks (1935)
- Place of Hawks (1935) with August W. Derleth
- Rendezvous (1942)
- That Heathen Alonzo (1940)
- The Adventure of the Remarkable Worm (1952)
- The Alphabet Begins with AAA (1940)
- The Blue Goose (1940)
- The Intercessors (1940)
- The Moon Rose Twice (1940)
- The No-Sayers (1940)
- The Regeneration of Ben Secker (1999)
- Two Ladies in Jeopardy (1961)
- Bob-Sledding (1948)
- Cornshocks (1948)
- Deer (1948)
- Drying Hickory Nuts (1948)
- Elderberry Syrup (1948)
- First Crocus (1948)
- Haying (1948)
- Old Speck (1948)
- Otter (1948)
- Potato Bugs and Weeds (1948)
- Pumpkin Faces (1948)
- Raft (1948)
- Roller Skating (1948)
- School Play (1948)
- Snowstorm (1948)
- Tadpoles (1948)
- The Baseball Game (1948)
- The Bat (1948)
- The Bobbing Cork (1948)
- The Caboose on the Train (1948)
- The Customer (1948)
- The Dance (1948)
- The Harness Shop (1948)
- The Locomotive Engineer (1948)
- The Long Ride (1948)
- The Long Trail (1948)
- The Old Covered Bridge (1948)
- The Old Swimming Hole (1948)
- The Unexplored Island (1948)
- The Waterfall (1948)
- The Wind in the Leaves (1948)
- Torch Signals (1948)