The Irene Haupt Photographs of Musicians in Buffalo contains images of composers and performers who have participated in new music events at the University at Buffalo ca. 1978-1999. Composers represented in the collection include Larry Austin, Milton Babbitt, Henry Brant, John Cage, Elliott Carter, Aaron Copland, Jacob Druckman, David Felder, Morton Feldman, Lejaren Hiller, Lukas Foss, Ernst Krenek, Otto Luening, Conlon Nancarrow, Pauline Oliveros, Bernard Rands, Steve Reich, Poul Ruders, Frederic Rzewski, Ralph Shapey, Leo Smit, Virgil Thomason, Nils Vigeland, and Charles Wuorinen. Notable performers include Ursula Oppens, Yvar Mikhashoff, Frances-Marie Uitti, Jan Williams, Diamanda Galas, Miles Anderson, Leroy Jenkins, Malcolm Goldstein, and Carol Plantamura.

Scores and parts for solo percussion and percussion with other instruments. Most of the items bear Pugliese's performance markings. Others bear inscriptions from the composers to Pugliese. The collection also includes works composed or arranged by Pugliese.

Flow charts created for computer music composition by Lejaren Hiller and included as figures and illustrations in his published articles about the processes used in writing computer music, including his works, , and . The collection also contains unidentified flow charts and diagrams, as well as negatives of other charts created by Hiller.

The collection contains scores of five compositions by John Myhill in varied states of completion and a folder of sketches and musical analyses. The collection also contains a folder of prose writings and a single piece of correspondence to Myhill.

The Morton Feldman Collection of Audio Recordings contains 52 reel to reel tapes and 35 cassette recordings, including performances of 38 compositions by Morton Feldman. The collection also includes some events, including the conversations between John Cage and Feldman recorded in 1966 as Radio Happenings I and II, the memorial service for Feldman at St. Mark's Church in New York City, a tribute radio program broadcast by WNYC 7 November 1987 in New York City, and an interview of Jan Williams by Sebastian Claren about Feldman. Other composers represented by recordings include Harrison Birtwistle, Pierre Boulez, John Cage, Barbara Monk Feldman, and Bunita Marcus.

The Leo Smit Slide Collection contains approximately 13,705 35 millimeter slides taken by American composer, Leo Smit. The contents include images of notable musicians, images used in his lecture recitals, and images taken during his many journeys in the United States and abroad, including Central and South America, Italy, and various other European countries.

The James W. McKinnon Music Iconography Slide Collection consists of 2,380 slide reproductions of iconographic sources related to music. Images in the collection feature representations of musicians, instruments, and musical notation in manuscript illuminations, prints, engravings, oil paintings, sculptural and architectural works, mosaics, reliefs, and other artworks.

Chiefly secondary materials such as articles and symposium papers collected by John Clough, many with correspondence.

Collection contains 6 folders of papers related to Perry's association with the Chicago Lyric Opera and 48 folders of clippings he compiled about vocalists, instrumentalists, conductors, and music halls.

Collection contains 23 folders of newspaper and magazine articles about singer Maria Callas. It also includes 7 folders of concert programs and Dr. Perry's bound scrapbook of Callas clippings.