found: Variety girl [MP] 1946:credits (special Puppetoon sequence by William Cottrell)
found: Internet movie database, May 12, 2010(William Cottrell (I); b. 19 Nov. 1906; d. 22 Dec. 1995, Burbank, Calif.; alternate name, Bill Cottrell; writer)
found: J-disc discography (online), viewed 19 March 2020:Bill Cottrell (Nov. 19, 1906-Dec. 22, 1995; Known as an animator for Disney, worked with Duke Ellington and Billy Strayhorn on black adaptation of Snow White originally called Cole Black and the Seven Dwarfs, which eventually became Satin Doll and the Seve Little Men; songs: I could get a man; Once upon a dream)