Treaty of March 10, 1865
Supplementary treaty between the United States of America and the Ponca tribe of Indians, made at the city of Washington on the tenth day of March, A. D. 1865, between William P. Dole, commissioner on the part of the United States, and Wah-gah-sap-pi, or Iron Whip; Gist-tah-wah-gu, or Strong Walker; Wash-com-mo-ni, or Mitchell P. Cerre; …