Superman (1940s animated film series) - Wikipedia
Superman Patriotic Group (DC, 1941-43). Lot of four early Superman | Lot #5622 | Heritage Auctions
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You've got me? Who's got you?” – Cinematic Rabbit Hole
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Superman Publication History | DC Database | Fandom
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The First Onscreen Superman Was a Gorgeous Series of Animated Shorts | Tor.com
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Superman - Wikipedia
Superman wasn't quite as nice in the early days - Action Comics (1938) #2 : r/comicbooks
Superman (comic book) - Wikipedia
The Secret Origin of Superman Smashes the Klan | Den of Geek
Superman: 10 Early Canon Comics Every New Fan Should Read
