The records of the Columbia University Orchestra include 323 reel-to-reel tapes of performances by the Columbia University Orchestra and Composers String Quartet. Also includes print material and photographs relating to the orchestra kept by its conductor Howard Shanet.

Sylvia Marlowe (1908-1981) was an important mid-twentieth century American harpsichordist. The Sylvia Marlowe collection documents her performance career, predominantly through scores, many inscribed to her by composers. Additionally, photographs and textual publicity materials provide further context for Marlowe's performances and recordings.