The Yvar Mikhashoff Trust for New Music Records contain applications, including scores and audio/video recordings, submitted by individuals and organizations for grants from the Trust.

Contains 45 manuscript compositions, 4 manuscript arrangements, and 5 published compositions. It also contains an article written by Winning and two programs for concerts in Buffalo, New York.

Scores owned by percussionist and conductor, Jan Williams. The majority of the scores were marked by Williams for use in performance. Some scores bear inscriptions from composers to Williams.

The Jan Williams Collection of Images contains images of various performances and trips made by Jan Williams with accompanying performers and composers. An original gift was received of 321 prints and contact sheets and 54 35mm slides in 2007. An additional gift was received of 173 photographs in 2008.

The Morton Feldman Images by Jan Williams date from concert tours made by Morton Feldman and the University at Buffalo's Creative Associates in 1974, 1977, and 1979.

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

The collection contains scores and parts of twenty original compositions by Friedrich Otto Trautmann, a composer and organist who lived in Germany and England in the late nineteenth to early twentieth century.

The collection contains 13 boxes of concert programs, chiefly from England, but also including Buffalo, New York, and other cities in the United states, Austria, German, and other European countries, as well as Mexico and Canada.

The collection contains 37 78 rpm 10-inch recordings, 1 7-inch 78 rpm recording, 1 5-inch 78 rpm recording, and 1 7-inch 45 rpm recording. The recordings are all commercial releases consisting of classical, ethnic, and popular music.

Collection of 125 complete pieces of sheet music from European countries: Austria (5), Belgium (6), England (54), France (9), Germany (31), Italy (14), and the Netherlands (5). Most of these include title page illustrations, about 30 of which are in color. The collection includes an additional 24 partial works, most of which consist only of their title pages. The musical content consists of 44 works for solo piano and approximately 75 works for some combination of voice and piano.