15 sources Adventure ComicsMore Fun Comics #73 (Nov. 1941): "The Submarine Strikes" Prize Comics (vol. 1) #7 (Dec. 1940): "Journey to 1940" Star Spangled Comics Strange Adventures (vol. 1) #1 (Aug.-Sep. 1950): "The Girl Who Couldn't Die" World's Finest Comics Young Justice - Season 1, Episode 1 (26 Nov. 2010): "Independence Day" | 6 characters
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