Michael Barrier has just posted a must-read for anyone interested in the history of animation. For most of his career, Roger Armstrong was a comic book and strip artist — and a darn good one — but he made one brief detour into working in animation. Many moons ago, he tape recorded his recollections of working at the Walter Lantz studio in the mid-forties and Barrier has transcribed and annotated these recollections.
Roger was a sharp guy so apart from some confusion about dates, I think what he remembered is probably the way it was.