Captured in 1859 or 1860, this image shows four of the principal chiefs of the Arapaho people. The character on the far right is Warshinun – sometimes known by the name of Chief Friday. As a young boy, Warshinun became separated from his people and was eventually rescued by a fur trapper. For a time, he even attended school in St. Louis. That meant he learned English, and this enabled him to play an important role as an interpreter and negotiator for members of his tribe. Photo Credit: James D. Hutton