Filtering by: Source Collection san francisco academy of comic art collection Remove constraint Source Collection: san francisco academy of comic art collection Creator caniff, milton, 1907-1988 Remove constraint Creator: caniff, milton, 1907-1988 Subject heroes Remove constraint Subject: heroes Subject canyon, steve (fictitious character) Remove constraint Subject: canyon, steve (fictitious character) Time Period (Topic) 1940s (1940-1949) Remove constraint Time Period (Topic): 1940s (1940-1949)