Survey of Conditions of the Indians in the U.S. hearings before the United States Senate Committee on Indian Affairs, Subcommittee on S. Res. 79, Seventy-First Congress, second session and Seventy-First Congress, third session, on Jan. 30, 1930, Apr. 13, 16, May 26-30, June 1, 1931. Part 21 :

Hearings were held on Apr. 13 in Riverside, Calif.; Apr. 16 at Fort Yuma, Calif.; May 26 in Reno, Nev.; May 27 at Fort Bidwell, Calif.; May 28 at the Klamath Agency, Oreg.; May 29 in Warm Springs, Oreg.; May 30 in Chemawa, Oreg.; and June 1 in Tacoma, Wash.