Hargrave, I don't know if yo have any of these, however this list of book has vintage photos. Also I don't know if you are familiar with pinterest it is an excellent place to search for vintage photos here is a link to my boards on pinterest. https://www.pinterest.com/kreimans/
You might have to register to access however I think you may end up wanting to build your own boards once you find what you can do.
You will be interested in my boards, Texas Rangers and other Notables of the Old West, and holster, belts chaps board. Some good searches on pinterest are saloons of the old west and towns of the old west. You can try searches for anything you might be specifically interested in. True West web site also has a lot of old west photos, not sure you might have to be a subscriber to see some of them.
The Peacemakers, R.L Wilson
Cowboys and Trappings of the Old West, Mann Flood
I See by Your Outfit, Tom Lindmier and Steve Mount
Three Book Series The Wild West Contains, The Native Americans, The American Frontier, Age of the Gunfighter
Cowgirls Women of the Wild West
of course Packing Iron