Contents: Raider of the Spaceways (Weird Tales, Jul 37) Avengers of Space (Marvel Science Stories, Aug 38) The Time-Trap (Marvel Science Stories, Nov 38) The Lifestone (Astonishing Stories, Feb 40) Monsters of the Atom (Super-Detective, Apr 41) Red Gem of Mercury (Super Science Stories, Nov 41) The Crystal Circe (Astonishing Stories, Jun 42) War-Gods of the Void (Planet Stories, Fll 42) Thunder in the Void (Astonishing Stories, Oct 42) We Guard the Black Planet (Super Science Stories, Nov 42) Soldiers of Space (Astonishing Stories, Feb 43) Crypt-City of the Deathless One (Planet Stories, Win 43) The Eyes of Thar (Planet Stories, Fll 43) What Hath Me (Planet Stories, Spr 46) Carry Me Home (Planet Stories, 50) The Interplanetary Limited (First Time in Print)