Contains the following types of materials: official papers, diary. Contains information pertaining to the following wars and time periods: 1865-1897, Spanish-American War -- Pacific, World War I (WWI) -- United States (U.S.), 1920s, 1930s, World War II (WWII) -- General -- U.S., 1945-1950. Contains information pertaining to the following military units and organizations: 2nd California Artillery Regiment, 1st California Infantry Regiment, 1st and 5th California National Guard Infantry Regiment, California Coast Artillery Corps, 40th and 604th U.S. Coast Artillery Regiment, U.S. Coast Artillery Reserve, Ninth (9th) Coast Artillery District. General description of the collection: Henry G. Mathewson papers include general officer's papers consisting of miscellaneous official and personal papers regarding assignments to duty, transfers, promotions, summaries of service covering his career (1895-1939). Contains his diary (April 18-May 6, 1906) covering his service as major of the 1st California National Guard during the San Francisco earthquake, plus orders from the War Dept. Militia Bureau, the Western Dept., and the coast defenses of San Francisco while commanding the 40th Coast Artillery during WWI. Also includes a recommendation for promotion from Hunter Liggett in 1928.
