The best Thanksgiving cartoon ever made: Jerky Turkey, released in 1945 — and for some reason, in April. Directed by Tex Avery. Story by Heck Allen. The IMDB credits Daws Butler and Bill Thompson with the voices and they're wrong. Daws hadn't even arrived in Hollywood in 1944 when this voice track was done — his first cartoon jobs were in '48 — and the pilgrim is someone else imitating Thompson's famous radio voice. The turkey might be Harry Lang, who popped up in a lot of Avery's cartoons of the period but the voice coming out of that turkey call sounds like the very versatile Frank Graham and it would be odd to bring him in just to do that one voice…