I called the wife and asked her.
The Publisher is "The Mountaineers"
I have one called Animal Tracks of the Smokey Mountains and one called Animal Tracks of the Great Lakes, it's ISBN is 0898861969.
Maybe you can check them out on the intranet. I like this series, it has bird and reptile/amphibian tracks as well.
Hope this helps ya, or gives you a start anyway, dpgratz