Thomas R. Mahoney (1896-1978) was an attorney and legislator, serving as an Oregon state senator from 1939-1952, 1961-1969, and 1971-1974. Papers consist of correspondence, 1952-1974, including a letter from Dwight D. Eisenhower and a letter from Washington Representative Margaret Hurley; newspaper clippings and ephemera; and scrapbooks regarding his political career.