Pioneering filmmaker and founder of Keystone Studios, which introduced to the public the likes of Fatty Arbuckle, Mack Swain, The Keystone Kops, and Charlie Chaplin. Signed book: King of Comedy. First edition. Garden City: Doubleday & Co., 1954. Hardcover with dustjacket, 6 x 8.5, 284 pages. Signed and inscribed on the front free end page, “For Lou Mason, Best wishes, Keep laughter [sic], Mack Sennett.” In fine condition, with a touch of toning, light rubbing to covers, and light rubbing and edge wear to jacket. R&R COA.