Blackfoot Chief at Bow River. By the late 1700's most tribes were mounted or had access to horses. The horse, first introduced to the Blaclfoot in the 1730's greatly improved their mobility. The Blackfoot chief pictured here poses proudly for Curts' camera in the beautiful setting of the Bow River. Photographed by Edward S. Curtis in 1910. I love this photo, as old as it is you can see the ripples and the reflection of the horse in the water.