Charles Weidman (1901-1975) was a dancer, choreographer, and teacher known for his roles as a member of the Denishawn Company, and later for founding his own companies: the Humphrey-Weidman Concert Company, Theatre Dance Company, and An Expression of Two Arts. The additions to the Charles Weidman papers contain material related to choreographed works he performed with the Theatre Dance Company and An Expression of Two Arts; files representing his time with the Denishawn Dancers; photographs; and scrapbooks.

The Corney Grain Archive provides an insight into the talents of Richard Corney Grain and the esteem with which he was held among his theatrical contemporaries. The archive includes personal memorabilia including his correspondence, along with photographs, periodical art and reviews, books written by or about Grain, sheet music of his songs, and programs from his German Reed entertainments, most of which include synopses and song lyrics.

This collection contains correspondence, manuscripts, opera librettos, songs, short stories, novels, sketches, and critical reviews. It also has personal family papers of Kurt (Ashley Vernon) and Greta Hartwig Manschinger, paintings and writings by and other records from Greta's sister Mela Hartwig and her husband Robert Spira, audio recordings, scores, and sheet music, as well as audio recordings of performances.

Julius Rudel (1921-2014) was an opera and orchestra conductor who graduated from the Mannes School of Music in 1942. He served as music director for several organizations, most notably as director and principal conductor for New York City Opera from 1957 to 1979. The collection includes annotated conducting scores, notes, a scrapbook of news clippings, programs and playbills, correspondence, biographical material, and photographs.

The Kendrick Philander Shedd Papers include correspondence about his resignation from the University of Rochester faculty for socialist sympathies; reminiscences of the socialist movement in Milwaukee, 1915; personal scrapbooks and autobiography; as well as published and unpublished writings. There are also scrapbooks of minutes, correspondence, and clippings on Socialist Educational Federation of Rochester, sponsored by the Progressive Working People's Lyceum and Local Rochester, Socialist Party, 1914; letters and papers concerning the Rochester Socialist Sunday School and Young People's Socialist League; scrapbooks about the Social Center at School No. 9, Rochester, 1908-10; and a defense of Shedd by Lloyd Somers, with exhibits.

Serge Prokofiev (1891–1953) was a Russian and Soviet composer, pianist and conductor, and seminal figure in the history of twentieth-century music. The Serge Prokofiev Archive (SPA) contains 58 original music manuscripts and over 10,000 letters and documents primarily from 1918-1936, the years Prokofiev spent in the West. The SPA also includes an expansive collection of music manuscript copies, published scores, concert programs, scholarly books and articles, photographs, and audio and video material, making it the premier research collection for studying Prokofiev's life, work and legacy.

Sylvia Marlowe (1908-1981) was an important mid-twentieth century American harpsichordist. The Sylvia Marlowe collection documents her performance career, predominantly through scores, many inscribed to her by composers. Additionally, photographs and textual publicity materials provide further context for Marlowe's performances and recordings.

Harpsichordist Sylvia Marlowe (1908-1981) contributed to popularizing harpsichord music and promoting new works for the harpsichord in the twentieth century. The collection includes personal correspondence, photographs, clippings and programs, contracts and wills, analog audio reels of important albums Marlowe recorded, and a set of scores of classical pieces set in contemporary popular arrangements composed for Marlowe. The collection also contains correspondence and documents relating to the Harpsichord Music Society (founded by Marlowe) and Kenneth Cooper, its director.