Correspondence, manuscript music scores, copies of scores, playscripts, scenarios, watercolor drawings and other stage designs, contracts, legal papers, programs, clippings and other printed materials, microfilms, records, tape recordings, and photographs. Among Moross's work are the musical play, "The Golden Apple"(1954), dance music for "Ballet Ballads"(1945) and for "Frankie and Johnny"(1938), the film score for "The Big Country"(1958) and for "The Cardinal"(1963), and his Symphony No. 1 (1943). There are some financial papers and production records for the staging of his works. Among the cataloged correspondents are Aaron Copland, Agnes George De Mille, Ned Rorem, Virgil Thomson, and Thornton Wilder.