in Superman (DC, 1939 series) #244 (November 1971)
in All Star Adventure Comic (K. G. Murray, 1959 series) #74 ([April 1972] ?)
in Doomsday Album (K. G. Murray, 1977 series) #6 (April 1977)
in From Beyond the Unknown (DC, 1969 series) #3 (February-March 1970)
in GrĂ¼ne Laterne (BSV - Williams, 1975 series) #4 (Januar 1976)Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
in Strange Adventures (DC, 1950 series) #220 (September-October 1969)