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.

Willis Mahoney (June 13, 1895-June 2, 1968) was a frequently controversial mayor of Klamath Falls, serving two terms in 1930s. Scott Bullitt was a lawyer, aspiring politician and prominent Democrat who died of liver cancer in 1932. Collection consists of correspondence and other documents regarding a debt of $5,000 owed to Bullitt that Mahoney was unable to pay, and legal action brought by Dorothy S. Bullitt, Scott Bullitt's widow, in an attempt to collect.

Scrapbook containing letters from Eugene Pearl "Gene" Marquess to his parents in Portland, Oregon, written while serving as a non-commissioned officer in Company D, 74th U.S. Naval Construction Battalion, during World War II; the unit was stationed on the island of Betio. Collection also includes publication of the 74th CPO Club, with photographs and biographies of members.

Collection includes correspondence, reminiscences, documents, genealogical information and obituaries regarding the Marshall and Seaman families. Family members mentioned include Earl Marshall, Lou Marshall, Lavella Marshall, Norman Seaman and Albert Brownell. Earl Andrew Marshall (1889-1958) and C. L. (Lou) Marshall (1887-1957) were descendants of Samantha Jane Waldran, an Oregon pioneer of 1852 from Iowa. The Marshall brothers had an engineering firm in Portland, Oregon.

Papers of and relating to Charles H. Martin (1863-1946), Ellis G. Hughes (1845-1909), and their families. Charles H. Martin served in the U.S. military from the 1890s to 1920s, attaining the rank of major general, and subsequently served as a U.S. representative and then as governor of Oregon. Ellis G. Hughes, who was Martin's father-in-law, was a prominent real estate attorney in Portland, Oregon.

Correspondence, property records, reports, and ephemera relating to Ellis G. Hughes and Charles H. Martin of Portland, Oregon. Hughes was a real estate lawyer. His son-in-law Martin was an officer in the U.S. Army, a U.S. congressman, and governor of Oregon from 1935-1939.

The Mass Transportation Committee of Fifteen was a citizen advisory group appointed by Portland, Oregon, Mayor Joseph K. Carson, Jr. Collection includes correspondence, minutes, reports, etc., 1935, regarding proposals for mass transportation in Portland; and a streetcar, railroad, and bus map of Portland, 1934.

Four letters from Louie E. Matteson (1881-1957) to his family, written while he was serving in the U.S. Army during the Philippine-American War, and a brief biographical outline of Matteson's life.

Papers include manuscript letters from George L. Matthews to his wife, Rozella Matthews, 1885, regarding his plans to cross the prairie and join her; and miscellaneous bills, receipts, shipping orders, and other personal accounts, 1879-1889.

The McAfee family owned a drugstore in Astoria, Oregon. Family papers include shares of stock in the Pacific Silver & Copper Mining Company, Salem, Oregon, belonging to Dr. J. W. McAfee, 1865-1876; correspondence regarding and stock in The Educators Company, Portland, Oregon, belonging to William Edward McAfee, 1917-1918; and a manuscript will of Mary Ellen Norton, née McAfee, with typescript supplement, 1916.