Elizabeth Aaron taught ear-training in the Techniques of Music department of Mannes College of Music (later, Mannes School of Music at The New School) from 1957 to 2017. The collection consists of administrative files relating to Aaron’s committee roles, Mannes board of trustee minutes, notebooks, recordings, photographs, and materials pertaining to the attempted merger of Mannes and Manhattan School of Music in 1978.

Austrian-born American music theorist Felix Salzer (1901-1986) furthered the system of musical analysis developed by Heinrich Schenker and was a faculty member and executive director of the Mannes College of Music. The collection contains biographical information, Salzer's honorary doctorate from Mannes and materials and photographs relating to the degree conferral ceremony, as well as vacation photographs of Salzer and his wife, Hedwig Lindtberg.

Judith B. Walzer served as the first provost of the New School for Social Research (now, The New School) from 1985 to 1997. The collection contains correspondence, memoranda, program proposals, university budget-related files, and documents pertaining to faculty matters during Walzer’s tenure as provost.

This collection consists of documents generated and compiled by the office of the dean of the Mannes School of Music at The New School from 1989 to 2004, during the tenures of deans Charles Kaufman and Joel Lester. The documents include reports, publicity information, memoranda, and correspondence. The collection also includes letters of commendation to the Mannes College of Music written by noted musicians in 1958.

This collection contains several thousand photographs relating to the Mannes School of Music, from its early days in the 1910s through the 2000s, primarily representing the 1970s through the 1990s. Included are images of Mannes buildings; performances put on by different Mannes ensembles; administrative and academic events; the Mannes family; and Mannes personnel, including students, faculty, alumni, and guest artists and performers.