United States. 1920. <i>Presidential Campaign Expenses. Hearings before the United States Senate Committee on Privileges and Elections, Subcommittee on S. Res. 357, Sixty-Sixth Congress, Second Session, on May 24-29, June 1-5, July 7-10, Aug. 30, 31, Sept. 1, 1920</i>. U.S. G.P.O.