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.

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.