Worlds of If Science Fiction - May 1966 (Vol. 16, #5)

Vol. 16, No. 5. Cover by Schelling for "Silkies in Space" (novelette) by A. E. van Vogt. Includes "The Hide Hunters" (novelette) by Robert Moore Williams; "Mountains Like Mice" (novelette; 1st SF magazine appearance!) by Gene Wolfe; "Earthblood" (pt. 2 of 4) by Keith Laumer & Rosel George Brown; "The Historian" by Carrol J. Clem; "Golden Trabant" by R. A. Lafferty. Guest editorial: "The Year of the Horse" by Lester del Rey. Feature: "An APA for Everyone" by Lin Carter. Illustrated by Gaughan, Adkins, Lutjens, and Wood.