The collection primarily consists of scores owned or relating to cellist, Nicholas Anderson. The collection included materials from three other cellists: Margaret Rowell, Irving Klein, and Stanislaw Bem. Given the size of the collection and the original order, Rowell's collection was separated with its own finding aid. The material relatign to Klein and Bem have been placed in a separate sub-series. The personal papers component of the Anderson collection includes extensive notes taken by Anderson during his time studying with Leslie Parnas. The collection also includes a substantial number of audio recordings by various artists.