Manuscripts and correspondence of Schneider, including numerous manuscripts of short stories and poems, many of which are unpublished, and several full-length manuscripts of unpublished critical works. The collection also contains an extensive file of typescript reports on books for The Book Find Club, clippings of reviews written by Schneider and about his books, photographs and drawings of Schneider, and a file of correspondence relating to his writings. The literary correspondence includes letters from many of the important novelists, poets, and literary critics from the 1920s to the 1950s. They include Conrad Aiken, Sherwood Anderson, Kenneth Burke, Malcolm Cowley, Theodore Dreiser, Waldo Frank, Lillian Hellman, Robert Hillyer, Alfred Kreymborg, Thomas Mann, Arthur Miller, Marianne Moore, Lewis Mumford, Laura Riding, Muriel Rukeyser, Karl Shapiro, Stephen Spender, Mark Van Doren, and Yvor Winters.

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.

Records of literary agents Paul Revere Reynolds, founder of Paul R. Reynolds agency, and his son, Paul Revere Reynolds, Jr. The records consist of correspondence, contracts, scripts, and financial records. The files are rich in correspondence between authors and agents and provide important information about some of the most significant works published in the last seventy years.