6 sources  Action Comics Adventure Into Mystery #3 (Sep. 1956): "When the Time Comes!"Detective Comics (vol. 1) #20 (Oct. 1938): "The Island of Wanatoba: Part 2"New Adventure Comics #17 (July 1937): "Pearl of the Bleeding Heart, Part 1"Popular Comics #60 (Feb. 1941): "Shipwrecked on an unmapped island..." | 1 character
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