The Thomas E. Marston family papers contain Marston family correspondence, writings by Thomas E. Marston, photographs, family material, and a small amount of material relating to Thomas E. Marston's collecting of medieval and early modern books and manuscripts, and his association with the Yale University Library. Most family correspondence consists of letters to Julia Dale Ewart Marston from Josephine Sands Marston, 1938-1951, concerning family news; accompanying these are letters from Thomas E. Marston and their children, Josephine Ewart Marston and Thomas Marston, and photographs of the children. Other correspondence of Julia Dale Ewart Marston includes additional letters from Thomas E. Marston, 1951-1954, concerning his divorce from Josephine Sands Marston, and letters from other members of the Marston and Sands families, 1923-1964, as well as from other correspondents, including Anne-Marie von Schutzbar genannt Milchling.