Analog Science Fact - Science Fiction March 1961 (Volume 67, Number 1)
Illustrations by John Schoenherr, Douglas, Arthur Orton. Cover by John Schoenherr (for "Ultima Thule")

Short Novel: "Ultima Thule" by Mack Reynolds ("Ronny Bronston/Section G" series; formed part of Planetary Agent X),

Novelette: "Hiding Place" by Poul Anderson (A "Nicholas Van Rijn / Polesotechnic League" story, included in Trader to the Stars.)

Stories: "Horrible Example" by Clifford D. Simak
"The Four-Faced Visitors of Ezekiel" by Arthur W. Orton.

Science: "Sub-Mach Rockets" by G. Harry Stine.

Special Feature: "An Introduction to the Calculus of Desk Clearing" by Maurice Price.

John W. Campbell's editorial is "Constitution for Utopia"; Book reviews by P. Schuyler Miller.