This collection is composed principally of letters written to Madel Jacobs Morgan (Mrs. Adlia), Jackson, by her brothers, Captain Charles Clark Jacobs (30, March 10, 1942–January. 29, 1946) and Private First Class Fred Clark Jacobs (12, September 15, 1943–December 14, 1945), who served during World War II in the Marine Corps and were in the combat zones in the Pacific. The letter dated December 13, 1897, is from Mrs. Morgan's father, Charles Clark Jacobs, and was written from British Columbia.