Analog Science Fiction - Science Fact October 1965 (Volume 76, Number 2)
Illustrations by John Schoenherr, Kelly Freas, Parker. Cover by John Schoenherr (for "Overproof.")

Novelette: "Overproof" by Johnathan Blake MacKenzie (Randall Garrett.)

Stories: "The Veteran" by Robert Conquest
"The Mischief Makers" by Richard Olin.

Serial: "Space Pioneer" (Part 2 of 3) by Mack Reynolds. (I know of a British paperback, but am not sure if there has been any American book edition of this.)

Science Fact: "Snakebite!" by William Hulett & Alexander W. Hulett, M.D.

John W. Campbell's editorial is "The Nature of Literature." Book reviews by P. Schuyler Miller.