The Robert D. Campbell Papers, 1909-1959, consist primarily of correspondence. The business correspondence, 1909-1941, is arranged first and is mostly from professional colleagues regarding patient referral and care. Correspondence from Campbell’s patients regarding both their symptoms and their bills is also included.

Personal correspondence is arranged next. These letters are from Campbell’s service in the Medical Corps in World War I and were sent from him to his wife. The letters were written while Campbell was stationed in the United States and in France. He wrote about daily happenings around camp, the weather, and activities during his free time. Most of his service in France was spent away from the front lines at Evacuation Hospital Number 12. He visited the front lines from time to time, however, including right before the armistice. The correspondence continued until Campbell returned to the United States in February 1919. Also included are speeches, newspaper clippings, biographical information, opera programs, UND publications, professional citations, and a scrapbook for the Robert D. Campbell Foundation.