Analog Science Fiction - Science Fact January 1971 (Volume 86, Number 5)
Illustrations by Kelly Freas, Vincent Di Fate, David Cook, Leo R. Summers. Cover by Kelly Freas (for "The Telzey Toy.")

Novelettes: "The Telzey Toy" by James H. Schmitz (part of the "Telzey" seres)
"Sprog" by Jack Wodhams.

Stories: "Homage" by Tak Hallus (Stephen Robinette)
"The Enemy" by M. R. Anver.

Serial: "The Tactics of Mistake" (conclusion) by Gordon R. Dickson (part of "Dorsai" series.)

Science: "The Scientific Gap in Law Enforcement" by James Vandiver.John W. Campbell's editorial is "The Baby in the Bath Water"; Book reviews by P. Schuyler Miller.