Notes: Issue No 21 (42). Ray Palmer receives sole credit for the cover but other sources list Malcolm H. Smith as co-artist. For some incomprehensible reason 'Falcons of Narabedla' is illustrated by a photo from the movie 'The Mole People'. Cover image from Project Gutenberg #50566 transcription. The contents page says the cover was "Adapted from a black-and-white illustration by Malcolm Smith depicting a scene in Shaver's Caves." In addition to the "Mole People" still on P.28, stills from the movie "Fire maidens of Outer Space" were used on pages 7 & 13 to illustrate New Lamps by Robert Moore Williams. (note added on 2020-06-01 based on the archived issue in archive.org).