in From Beyond the Unknown (DC, 1969 series) #19 (October-November 1972)Cover story. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
Pencil and inks credits, and page count confirmed from Julius Schwartz's editorial records, provided by DC Comics, August 2008.
in Strange Adventures (DC, 1950 series) #220 (September-October 1969)
in Mundo de Aventuras (AgĂȘncia Portuguesa de Revistas, 1973 series) #214 (3 Novembro 1977)
in Fantomet (Semic, 1976 series) #13-14/1986 (uke 25 1986)
in Pulp Fiction Library: Mystery in Space (DC, 1999 series) #[nn] ([September] 1999)
in The Atomic Knights (DC, 2010 series) #[nn] (April 2010)Pencil and inks credits, and page count confirmed from Julius Schwartz's editorial records, provided by DC Comics, August 2008.