Analog: April 1964 ("Bedsheet" size issue: 8-1/2" by 11".)
Illustrations by Harvey Woolhiser, John Schoenherr, George Schelling. Cover by Harvey Woolhiser (for "Sunjammer.")

Science: "The Extinction of Species" by Bert Kempers.

Novelettes: "Sunjammer" by Winston P. Sanders (pseudonym of Poul Anderson – included in Tales of the Flying Mountains)
"Counter Foil" by George O. Smith.

Stories: "Problem Child" by Arthur Porges
"Shortsite" by Walt & Leigh Richmond
"The Spy" by Mario Brand.

Serial: "Spaceman" (Conclusion) by Murray Leinster (book version was The Other Side of Nowhere.)

John W. Campbell's editorial is "God Isn’t Democratic." Book reviews by P. Schuyler Miller.