Marvel March, 1940
1st appearance of Flexo the Rubber Man; 1st appearance of Blue Blaze (Spencer Keen); 1st appearance of 3 Xs; 1st appearance of Dave Dean; 1st appearance of Dakor the Magician; 1st appearance of Dynamic Man
Introducing Flexo the Rubber Man; The Origin of the Blue Blaze; New Flight; The Green Terror; Tough Hombre (text); The Deep Sea Demon; The Blooded Ruby of Chung; The Origin of Dynamic Man
Harry Douglas, Joe Cal Cagno, Leo Stalnaker
Jack Binder, Harry Douglas, Fred Schwartz, Daniel Peters