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.

Frederick Werlé (1910-1997) was a composer, music teacher, and a former dean of the Mannes College of Music. His papers primarily consist of reel-to-reel and LP audio recordings and original music manuscripts. Also present in the collection are newspaper clippings, published music scores, concert programs, correspondence and notes.

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 is comprised of materials relating to The Mannes College of Music (as of 2024, Mannes School of Music, part of the College of Performing Arts at The New School) commencement and other ceremonies between 1961 and 2013. The collection includes programs from commencements, recognition ceremonies, and dean’s receptions, as well as speech transcripts and correspondence.