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Canadian-American filmmaker and studio head (1880–1960) who opened Keystone Studios, the first fully enclosed film stage, and was the originator of slapstick routines such as pie-throwing and car-chases; in 1938, he was presented with an honorary Academy Award for his contribution to film comedy. DS, one page, 8.5 x 11, no date. William Morris Agency rider in which Sennett agrees to pay "ten per cent (10%) of the gross sale, lease or license price…under any agreement entered into by us…for the production of a motion picture photoplay and/or photoplays and.or radio broadcasting and.or television rights in and to the material referred." Signed twice at the conclusion in fountain pen by Mack Sennett as president of the Sennett Pictures Corporation. In fine condition.
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