That Christmas Memories cookbook seems lovely.
My odd, interesting cookbook is a fundraising cookbook for my alma mater, the State University of New York at Stony Brook. It has no ISBN and it isn't on Amazon - I just checked. Stanford U. has it in a special collection.
Unlike most fundraising cookbooks that I know of, it isn't a compilation of recipes from a lot of cooks. It has a single author, the wife of the university president at the time.
Don't know how to post a link, but it is:
All the President's Menus: A Cookbook for Entertaining, by Carol Marburger (1980)
I've never cooked from it, so I can't tell you how good it is.