The collection consists of works, correspondence, documents, diaries, photographs, notes, and printed matter of DeWald (Princeton Class of 1916), professor in the Department of Art and Archaeology specializing in medieval Italian art and director (1946-1960) of the Princeton Art Museum. The collection contains his lecture notes and articles on Byzantine art, early Italian painting including Duccio's "Maesta," and German art. There is both professional and family correspondence, including letters regarding his book Italian Painting, 1200-1600 (1961), as well as diaries of travel to Italy and France in 1931, 1939, 1945, 1952, 1956, and 1965-1966. Included are personal photographs of family and friends, photographs of art reproductions, sculptures, and stained glass, negatives of the Hamilton Psalter and Psalterium Aureum, and photocopies of Greek and Latin manuscripts. The collection contains reports, correspondence, lists, and photographs regarding the years (1944-1966) DeWald spent as director (1946-1960) of the Monuments, Fine Arts, and Archives Subcommission of the Allied Commission in Italy during and after World War II. The collection reflects his work in locating and returning large numbers of paintings and sculpture carried off by Hitler's forces to Austria. Also included are DeWald's army papers, such as citations, assignments, and appointments, and American and international decorations, medals, and honors.