Quoting Nils Lid Hjort <nils at math.uio.no>: > When was Mickey's first appearance in a comic book? Seems as if it was this: http://coa.inducks.org/coa/c1/story.php/0/YM+000//_ ...or this: http://coa.inducks.org/coa/c1/story.php/0/YM+001//_ So, that's January 1930.