Baturdays begins in 1939 with Batman’s first appearance in Detective Comics #27.
1939 publications:
Detective Comics
comic Detective Comics #27, “The Case of the Chemical Syndicate
comic Detective Comics #28, [untitled]
comic Detective Comics #29, “The Batman Meets Doctor Death”
comic Detective Comics #30, [untitled]
comic Detective Comics #31, [untitled]
comic Detective Comics #32, [untitled]
comic Detective Comics #33, “The Batman Wars Against the Dirigible of Doom”
comic Detective Comics #34, [untitled]