My goodness! How did I miss Michigan State University's Feeding America: The Historic American Cookbook Project?
Or the Nicole Di Bona Peterson Collection of Advertising Cookbooks at Duke University?
Or Service Through Sponge Cake, a collection of cookbooks at Indiana University/Purdue University Indianapolis?
And Kitchen Historic has a list of links to cookbooks that makes me drool.
As if I didn't already have enough reading to do!