Keystone Studios was an early movie studio founded in Edendale, California (which is now a part of Echo Park) on July 4, 1912 as the Keystone Pictures Studio by Mack Sennett (1880-1960) with backing from actor-writer Adam Kessel (1866-1946) and Charles O. Baumann (1874-1931), owners of the New York Motion Picture Company (founded 1909).