Contains materials related to research done by Leonard Seiff on the viola for his postgraduate degree. It includes personal correspondence between him and prominent violists. Dated 1941-1947 with the bulk of the materials being from 1947.

Contains music scores in the form of handwritten manuscript. It also contains some biographies of well-known composers. Dated approximately 1950-1999.

Contains photographs of Bernard Zaslav and his various performing ensembles, including duets and quartets. Dated 1962-1978.

Collection contains scores that were used by William Primrose during his time playing with the London String Quartet, and include his parts and fingering, 1928-1965.

Materials includes scores and manuscripts from composers, Gerard Schuman, Karen J. Griebeing, Herbert Burst, Clement Turner, and Jonathon Adler. Some scores include correspondence between Rosenblum and the composers.

Contains materials pertaining to Leonard Sieff's experience with and study of the viola. It includes newspaper articles, specialty magazines, and personal letters relating to William Primrose and the viola. Dated 1941-2009 with the bulk of the materials being from approximately 1946-1947.

Contains photographs of Bernard Zaslav as well as a drawing of him and his viola. Dated circa 1975-1985.

Contains viola manuscripts collected by Ernst Wallfisch.

This collection contains Bernard Zaslav's papers on the viola which consist of solo and chamber music scores, his own compositions and arrangements, and correspondence with other musicians. The collection also includes photographs and other promotional material for his performing groups. Dated approximately 1770-2014 with the bulk of the materials being from approximately 1900-2014.