I suppose I can file this in the CDVs I don't see every day category. This fellow is decked out in his hat, long coat, a bolo tie (sort of), with his pant legs stuffed into his boots - pretty much the way they were worn back then. And the boots appear to have what we would call today a "western heel", which was pretty good for stirrups and such.
It is super neat! And that is about the best thing I can say about it.
There is a name on back, written in some kind of green substance (crayon? don't think it's ink), and it is almost impossible for me to be sure. We think it is A. C. Dier. But it could be Duir, or any of a number of other names. We're just guessing.
The photographer is R. W. Hook of Waukegan, Illinois.
I really like this one, and I'm tempted to keep it, but for now it's for sale in the shop - www.leopatti1910.com (search for "cdv photo man cowboy hat" and you should find it.