A good source for everything dog WAS the American Kennel Club Library located in New York City. The library closed in 2009 when it let it's librarian of thirty years go, and put part of its catalog online.
The Library's mission was to serve as a public reference collection and archive on matters relating to purebred dogs. When I did my dissertation research in 1999, I was privileged to handle and read books from the collection, some hundreds of years old like those below.
I would add the link to the online collection, but the one featured on the AKC site is no good, so if you know a different link, please let me know.