Towards the end of 1915, william Randolph Hearst decided to create an animation studio to promote the comic strips printed in his newspapers. He called the new company International Film Service, and he hired La Cava to run it (for double what he was making with Barré). La Cava's first employee was his co-worker at the Barré Studio, Frank Moser. Another was his fellow student in Chicago, Grim Natwick (later to achieve fame at Disney). As he developed more and more of Hearst's comics into cartoon series, he came to put semi-independent units in charge of each, leading to the growth of individual styles.