Contains the following types of materials: diary, documents, clippings, newspapers. Contains information pertaining to the following wars and time periods: World War I (WWI) -- United States; WWI -- Western Front, post WWI occupation -- Germany; 1920s, 1930s, World War II (WWII) -- United States; WWII -- Pacific, 1945-1950, 1950s. Contains information pertaining to the following military units and organizations: 19th United States Cavalry Regiment; 77th United States Field Artillery Regiment; 4th Field Artillery Brigade; 4th Division, Coast Artillery Corps (Reserves), 10th Army Anti-Aircraft Artillery; 179th Coast Artillery Battalion; 720th Amphibian Tractor Battalion. General description of the collection: The John Ross Parnin papers include a diary (April 1917 - August 1919), miscellaneous official papers, newspapers, including Silent salvo, of 77th Field Artillery Regiment. Balance of career is shown in 201 file, during interwar years when Parnin was in Coast Artillery Reserves. Parnin served as both enlisted man and officer.