Nez Perce National Historical Park, Idaho: hearings before the Subcommittee on Public Lands of the Committee on Interior and Insular Affairs, United States Senate, Eighty-eighth Congress, second session, on S. 2326, a bill to authorize the Secretary of the Interior to designate the Nez Perce National Historical Park in the State of Idaho, and for other purposes, August 18, 1964, Washington, D.C.; October 9, 1964, Lewiston, Idaho.