UPDATE: I have finished scanning all of the material from the Raggedy Ann + Andy comics that I own. I've also completed the Introduction for the Animal Mother Goose collection, including twenty illustrations by Walt Kelly, with color, from the 1947 hardcover Complete Nursery Song Book. I have a little bit more to do for The Brownies collection.
I have not heard from a single person (or a married one either, for that matter) offering new scans of the missing material. So I am offering a sample here of what will be seen: a page from Animal Mother Goose of "Pease Porridge," prime Kelly slapstick; a gorgeous page from "Maximillian Hopp," one of three nature stories that Kelly contributed to the title; the opening page of the first Brownies story in Raggedy Ann + Andy; and a bloodthirsty adventure page from John Stanley's Peterkin Pottle. Perhaps these will stir some interest in making these collection the best that they can be.
(http://i1095.photobucket.com/albums/i465/rmdavidson/RaggedyAnn001pg035.jpg)
(http://i1095.photobucket.com/albums/i465/rmdavidson/RaggedyAnn005pg022.jpg)
(http://i1095.photobucket.com/albums/i465/rmdavidson/RaggedyAnn028pg003.jpg)
(http://i1095.photobucket.com/albums/i465/rmdavidson/RaggedyAnn034pg009.jpg)