 Complete the following phrase:  Hearst animation studio International Film Service began in December 1915, and brought Hearst cartoonists to the screen. McCay was initially listed as one of them, but the studio never produced anything either by his hands or featuring his creations. McCay derived satisfaction from doing the work himself. Begun in 1916, The Sinking of the Lusitania was his follow-up to Gertie. The film was not a fantasy but a detailed, realistic recreation of the 