This just in from Gunnar:

[Enclosed: Scans of an article in The Filmgoer's Annual 1932, probably published in 1931, in London.

WD gives an account of the origin of Mickey Mouse: "We just got together, the bunch of us, and we worked things out. Sometimes we had good, old-fashioned scraps, but, in the end, things got ironed out and we had something."]