The collection consists of printed materials and correspondence compiled by the noted British music librarian, bibliographer, and musicologist Alec Hyatt King. The printed materials include offprints of articles, complete journal issues, exhibition catalogs, catalogs from music publishers and booksellers, membership lists and organizational histories, and concert programs.

Buffalo Musicians' Association records dating from 1889 to the present. Bulk of collection includes meeting minutes and financial records. Collection contains materials from Local 43 (white musicians' union), Local 533 (black musicians' union), Local 92 (merger of Locals 43 and 533, still in existence), Local 649 (Hamburg, N.Y., merged with Local 92 in 1999), and general AFM records.

The collection contains a small amount of correspondence, concert programs and advertisements, clippings, and photographs.

The collection contains fourteen documents, including twelve letters from Paër to associates and friends and two documents showing his services rendered for the fiscal years 1811 and 1813.

The Helene Fesenmaier Collection of Morton Feldman Correspondence contains six manuscript letters by composer Morton Feldman written to artist Helene Fesenmaier. The collection also contains an annotated copy of a typescript version of Feldman's article, The Anxiety of art.

The records of Hilda Schieder's Drum Corps include meeting minutes, its constitution and bylaws, business correspondence, and three black and white photographs.

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

The collection contains personal documents, correspondence, concert programs, and clippings that document the life of singer and librarian Joseph Chouinard.

Collection contains 85 items, including letters to Dr. Perry, autographed programs, and autographed cards. It also includes the collection, Following a Star that consists of mimeographed copies of letters written by May Higgens to members of the Claudia Muzio Fan Club.

The Kathryn McCarthy Papers contain a bound notebook of notes from music lessons and correspondence between McCarthy and Schillinger System teacher, Richard Benda.