Notes: Cover illustrates "Fueling Stop" by Calvin M. Knox (Robert Silverberg). The table of contents states that the illustrations were done by "Emsh, Freas, Orban & Luros", but only Freas' illustration on page 7 is explicitly credited. "Editorial: Yesterday's World of Tomorrow: 1928 IV" is called "The Editor's Page" in the table of contents. "Down to Earth" is called "Down to Earth: Your Letters and Our Comment" in the table of contents. The identity of "Marius" (Steve Benedict) was not known to the editor at the time, so his story "Vandals from the Moon" is attributed to "Marius". Bob Olsen's "The Educated Pill" is reviewed as "Educated Pill". The review of The Skylark of Space (Part 1 of 3) only credits Smith and not his collaborator Lee Hawkins Garby, who would be a credited co-author in all publications for another 20 years until Smith rewrote the novel. "The Perambulating Home" is reviewed without specifying whether the author was Clement Fezandié (legal name) or Henry Hugh Simmons (the pseudonym used in ''Amazing Stories'' in August 1928).