Sumpter Valley Railway

I am modeling the Sumpter Valley Railway from Whitney, Oregon to Prairie City, Oregon in Sn3. I am a member of the Sumpter Valley Raiway restoration group, but I have not been able to find out much about the colors that the Sumpter painted it's engines, various types of cars, and structures such as depots. Therefore, I would appreciate any and all help that I can get about this. I would like to get any photos of the communities Of Whitney, Tipton, White Pine, Austin, Dixie, and Prairie City. All Oregon. I would also like to get photos of any logging camps, equipment, and people. Any help I can get would be greatly appreciated.