Contents (view Concise Listing)

• 5 • Second Solution • [Editorial (Astounding)] • essay by John W. Campbell, Jr. [as by The Editor]
• 7 • The Rull • [Rull] • novelette by A. E. van Vogt
• 7 •  The Rull • interior artwork by Paul Orban [as by Orban]
• 14 •  The Rull [2] • interior artwork by Paul Orban [as by Orban]
• 21 •  The Rull [3] • interior artwork by Paul Orban [as by Orban]
• 28 •  The Rull [4] • interior artwork by Paul Orban [as by Orban]
• 34 • The Strange Case of John Kingman • short story by Murray Leinster
• 34 •  The Strange Case of John Kingman • interior artwork by Edd Cartier [as by Cartier]
• 43 •  The Strange Case of John Kingman [2] • interior artwork by Edd Cartier [as by Cartier]
• 48 • The Obsolete Weapon • short story by L. Ron Hubbard
• 48 •  The Obsolete Weapon • interior artwork by Edd Cartier [as by Cartier]
• 53 •  The Obsolete Weapon [2] • interior artwork by Edd Cartier [as by Cartier]
• 60 •  The Obsolete Weapon [3] • interior artwork by Edd Cartier [as by Cartier]
• 64 • The Mechanical Answer • short story by John D. MacDonald
• 64 •  The Mechanical Answer • interior artwork by William Timmins [as by Timmins]
• 73 •  The Mechanical Answer [2] • interior artwork by William Timmins [as by Timmins]
• 79 • The Electrical Robot Brain (Part 1 of 2) • essay by E. L. Locke
• 92 • The Analytical Laboratory: February 1948 (Astounding, May 1948) • [The Analytical Laboratory] • essay by The Editor
• 93 • Science Fiction Between Boards (Astounding, May 1948) • essay by P. Schuyler Miller
• 94 •   Review: The Legion of Space by Jack Williamson • review by P. Schuyler Miller
• 94 •   Review: The Weapon Makers by A. E. van Vogt • review by P. Schuyler Miller
• 94 •   Review: Slan by A. E. van Vogt • review by P. Schuyler Miller
• 94 •   Review: Adrift in a Boneyard by Robert Lewis Taylor • review by P. Schuyler Miller
• 95 •   Review: Mr. Adam by Pat Frank • review by P. Schuyler Miller
• 95 •   Review: Doppelgangers by H. F. Heard • review by P. Schuyler Miller
• 97 • ... And Searching Mind (Part 3 of 3) • [Humanoids] • serial by Jack Williamson (book publication as The Humanoids 1949)
• 97 •  ... And Searching Mind (Part 3 of 3) • interior artwork by Hubert Rogers [as by Rogers]
• 107 •  ... And Searching Mind (Part 3 of 3) [2] • interior artwork by Hubert Rogers [as by Rogers]
• 118 •  ... And Searching Mind (Part 3 of 3) [3] • interior artwork by Hubert Rogers [as by Rogers]
• 129 •  ... And Searching Mind (Part 3 of 3) [4] • interior artwork by Hubert Rogers [as by Rogers]
• 140 •  ... And Searching Mind (Part 3 of 3) [5] • interior artwork by Hubert Rogers [as by Rogers]
• 146 •  ... And Searching Mind (Part 3 of 3) [6] • interior artwork by Hubert Rogers [as by Rogers]
• 148 • In Times to Come (Astounding, May 1948) • [In Times to Come (Astounding)] • essay by The Editor
• 150 • Brass Tacks (Astounding, May 1948) • [Brass Tacks] • essay by The Editor
• 150 •  Letter (Astounding, May 1948) • [Letters: Willy Ley] • essay by Willy Ley
• 150 •  Letter (Astounding, May 1948) • essay by Fred Nash
• 152 •  Letter (Astounding, May 1948) • essay by John Gergen [as by John L. Gergen]
• 160 •  Letter (Astounding, May 1948) • essay by P. Schuyler Miller