Title change from Error Report #2523, by James Zanotto.
in Strange Adventures (DC, 1950 series) #226 (September-October 1970)
in Justice League of America (DC, 1960 series) #84 (November 1970)
in All Star Adventure Comic (K. G. Murray, 1959 series) #70 ([August 1971] ?)
in GrĂ¼ne Laterne (BSV - Williams, 1975 series) #12 (September 1976)Cover story
in World's Finest Comics (DC, 1941 series) #207 (November 1971)