Vernon Stallings

George Vernon Stallings (September 9, 1891 – April 9, 1963) was an American animation director and writer. He started working for Bray Productions in 1916 where he directed the Colonel Heeza Liar series of shorts, and the Krazy Kat shorts. He invented "the glass disk in the centre of the drawing board" in the 20s what later became known as the animation desk. He then worked for Van Beuren Studios from 1931 through 1934. Stallings directed the Silly Symphonies short Merbabies before continuing writing for the Disney studios on feature films such as Fantasia, Dumbo and Bambi. He is the son of famous baseball manager George Stallings.

...
Wikipedia