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All films made up to 1929 are in the public domain. So, Buster Keaton's Sherlock Jr. (1924), The Cameraman (1928), and Spite Marriage (1929). Also, Charlie Chaplin's The Kid (1921) and The Circus (1928).

Wish I could have a beer with you!

beer cheers GIF by Heineken

Mi first though was that all this was about cartoon works...that all..