On-sale date from ad in Mystery in Space #82 and copyright registration.
Inside front cover; published in cooperation with the National Social Welfare Assembly
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Letters submitted by Steve Stern; Doug Storer; Paul Gambaccini; Lee Greathouse; Rosemary Guthrie; James Morrison; Rick Wood
Inside back cover.