two Ponca men, Frank Eagle and Louis McDonald, helped co-found the Native American Church. In 1950 the tribe organized a new government under the Oklahoma Indian Welfare Act. They adopted their tribal constitution on 20 September 1950. Today the tribe is headquartered in White Eagle, Oklahoma. It conducts business from Ponca City. The Ponca Tribe of Oklahoma has over 4200 members. Notable Ponca Carter Camp, AIM (American Indian Movement) leader Brett Chapman, attorney and Native American rights advocate Tommy Morrison, former heavyweight boxer/co-star in Rocky V movie Chief White Eagle, chief and civil rights advocate Susette La Flesche, civil rights activist, writer, lecturer, interpreter, artist Paladine Roye, painter, 1946–2001 Ponka-We Victors, Kansas state legislator Clyde Warrior, activist for Native self-determination Standing Bear, chief and civil rights advocate See also Native American tribes in Nebraska Ponca Fort Notes References Clark, C. Blue. Indian Tribes of Oklahoma: A Guide. Norman: University of Oklahoma Press, 2009. . Dorsey, James Owen. Omaha and Ponka Letters. Washington: Government Printing Office, 1891. Dando-Collins, Stephen. Standing Bear is a Person. Cambridge, MA: Da Capo, 2004.. Rollins, Willard H. The Osage: An Ethnohistorical Study of Hegemony on the Prairie-Plains. Columbia: University of Missouri Press, 1995. External links Ponca Tribe of Nebraska Ponca Tribe of Oklahoma Information about the Ponca "An Indian is a person": U.S. District Court Case of Standing Bear vs. George Crook, 1879 Plains tribes Dhegiha Siouan peoples Native American tribes in Nebraska Native American tribes in Oklahoma