Galaxy Science Fiction Vol. 2 #6 FN 1951. September 1951. Cover by Don Sibley. Stories: "The Puppet Masters"(Part 1) by Robert A. Heinlein, "If You Was a Moklin" by Murray Leinster, "Cabin Boy" by Damon Knight, "The Sense of Wonder" by Milton Lesser, and "What is Posat?".
