Events and publications January Ace Comics (1937 series) #22 - David McKay Publications Action Comics (1938 series) #8 - National Allied Publications Adventure Comics (1938 series) #34 - National Allied Publications Amazing Mystery Funnies (1938 series) #5 - Centaur Publications Detective Comics (1937 series) #23 - National Allied Publications Feature Funnies (1937 series) #16 - Comic Favorites, Inc. More Fun Comics (1936 series) #39 - National Periodical Publications February Ace Comics #23 - David McKay Publications Action Comics #9 - National Allied Publications Adventure Comics #35 - National Allied Publications Amazing Mystery Funnies #6 - Centaur Publications Detective Comics #24 - National Allied Publications Feature Funnies #17 - Comic Favorites, Inc. More Fun Comics #40 - National Periodical Publications March Ace Comics #24 - David McKay Publications Action Comics #10 - National Allied Publications Adventure Comics #36 - National Allied Publications Amazing Mystery Funnies #7 - Centaur Publications Detective Comics #25 - National Allied Publications Feature Funnies #18 - Comic Favorites, Inc. More Fun Comics #41 - National Periodical Publications April 6-7 April: Fox Publications is sued by DC Comics over their comics character Wonder Man who plagiarizes their Superman. Fox loses their case and is forced to discontinue the comic strip. Ace Comics #25 - David McKay Publications Action Comics #11 - National Allied Publications Adventure Comics #37 - National Allied Publications All-American Comics #1 - All-American Publications Amazing Mystery Funnies #8 - Centaur Publications Detective Comics #26 - National Allied Publications Feature Funnies #19 - Comic Favorites, Inc. More Fun Comics #42 - National Periodical Publications Movie Comics (1939 series) #1 - National Periodical Publications May May 20: In Floyd Gottfredson's Mickey Mouse comic strip the villain Phantom Blot and the policeman Chief O'Hara make their debut; in the story Outwits the Phantom Blot. Ace Comics #26 - David McKay Publications Action Comics #12 - National Allied Publications Adventure Comics #38 - National Allied Publications All-American Comics #2 - All-American Publications Amazing Mystery Funnies #9 - Centaur Publications Detective Comics #27 - National Allied Publications - First appearance of Batman Feature Funnies #20 - Comic Favorites, Inc. More Fun Comics #43 - National Periodical Publications Movie Comics #2 - National Periodical Publications June Ace Comics #27 - David McKay Publications Action Comics #13 - National Allied Publications Adventure Comics #39 - National Allied Publications All-American Comics #3 - National Allied Publications Amazing Mystery Funnies #10 - Centaur Publications