This collection consists of transcripts of seventeen interviews with Esther Hoffman Wexler (1918-2014), conducted by her cousin, Lawrence Freund, between 2012 and 2014. Hoffman, a Canadian-born concert pianist and a longtime piano teacher at the Mannes College of Music (which became a division of The New School in 1989), discusses her life experiences and her career as a musician and as a teacher in New York City and Toronto.

This collection contains a 1940 handbill announcing lectures on music at Carnegie Hall, with a manuscript of lecture notes for the fourth lecture delivered by Leopold Mannes, and a manuscript by Mannes about color theory.

Leopold Mannes (1899-1964) was an American musician, educator, inventor, and son of the founders of the Mannes School of Music, David and Clara (Damrosch) Mannes. Leopold Mannes and Leopold Godowsky, Jr. invented Kodachrome color photography. Mannes became president of the Mannes School of Music in 1948. This collection contains music manuscripts of Mannes's compositions, including arrangements of pieces by other composers.

The New School Archives staff created the Mannes College of Music administrative records collection by integrating several collections documenting the Mannes College of Music (now, Mannes School of Music). The collection includes correspondence, event flyers, photographs, legal records, meeting minutes, illustrations, administrative records and reports.

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.