Abstract This photographic collection housed at the BIA, Wind River Agency, Ft. Washakie, Wyoming, consists of about 2,500 black-and-white photographic images.  Most of the photographs were taken during the 1930's on the Wind River Reservation, although a few were dated in the late 1920's or early 1940's.  They were primarily of the co-operative work projects in progress at the time, such as roadbuilding, erosion control, fire-fighting, sawmills, tie drives, irrigation ditches, completed dams,...