Research papers of E. M. R. Ditmas, 1919-1980, including material on art history and on folklore, 1919-1980; bibliographical, topographical, personal and subject indexes on Arthurian and mediaeval studies; papers relating to the International Arthurian Society; typescript drafts of studies of the Tristan legend and Geoffrey of Monmouth, [1960s], and correspondence concerning their publication, 1960-1972.