Ace Magazines · July, 1940
Vol. 1 #1; 1st appearance of Corporal Flint; 1st appearance of Larry Harrigan; 1st appearance of Magno; 1st appearance of Q-13; 1st appearance of Sky Smith; 1st appearance of Vulcan; Origin of Vulcan
The Flame Maiden; Sands of Doom
Writers: Lester Dent, Paul Chadwick