The papers of Jack R. DeWitt are divided into two series: Papers and Photographs.
Papers (1942-2000) consists largely of the military papers that DeWitt obtained throughout his Army career. These papers include orders, forms, and reports that document the bare bones of his service (e.g. movements, promotions) but do not go into much depth. The papers do provide some insight into service with the Army Reserves through the certificates, questionnaires, and training materials. DeWitt's memoirs and correspondence, which includes a few letters he wrote home during his World War II service, go into much greater detail about the specific aspects of his service. The memoirs in particular are quite comprehensive in describing his service from enlistment through retirement. Also included are various excerpts from reminiscences by other veterans, usually members of the 14th Armored Division, that DeWitt collected from newspapers, magazines, and books. These reminiscences generally treat upon a battle or issue that they shared with DeWitt. Reunion materials from the 14th Armored Division and the 19th Armored Infantry Battalion show DeWitt's interest and involvement in veterans organizations.
Photographs (1940-1977) contain two large and well-captioned photo scrapbooks that document DeWitt's service during World War II. The photographs focus on his overseas service in Germany and include many shots of ruined German towns, German prisoners of war, and German military equipment. There are also several shots of concentration camp survivors. The captions reflect DeWitt's feelings of anger and resentment toward the German forces. Other photos include uncaptioned shots of mountain warfare training at Camp Carson, Colorado and of reunions of the 14th Armored Division. Several shots of DeWitt in military uniform are also in the series.
