On November 16, 1907, Indian Territory and Oklahoma Territory became Oklahoma state and were admitted as the 46th U.S. state.
Western History Collections Photographic Archives collection.
The photograph below, courtesy of From Warrior to Saint: The Journey of David Pendleton Oakerhater collection, pictures four students of Carlisle Indian School in 1880 — Cheyenne, Kiowa, and Comanche — including David Pendleton Oakerhater himself (second left).