New York: Street & Smith Publications, Inc., 1941. Octavo, single issue cover painting by Hubert Rogers, pictorial wrappers. Pulp magazine. Includes part 1 of "Methuselah's Children" by Robert A. Heinlein and Alfred Bester's first published story for ASTOUNDING, "The Probable Man." Also stories from Anson MacDonald (Heinlein), Clifford Simak, A.E. van Vogt and others. [Reference: Tymm and Ashley, Science Fiction, Fantasy, and Weird Fiction Magazines, pp. 60-103].