Joan Mason appears in 6 issues in this volume.
The Adventures of The World's Greatest Heroes!
October 6, 1941
The Daring exploits of America's 3 Favorite Heroes!
January 28, 1941
May 7, 1941
Bridge in Danger
July 6, 1941
Wings over Albania
September 5, 1941
The Giant's Dagger; Tomb of the Tortured Death; Power Dive; Terror of the Red Dust
January 6, 1942
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