Among the collection's thousands of metal and lacquer discs and master mono tapes are released and unreleased versions of recordings by such seminal artists as Louis Armstrong, Bing Crosby, Tommy Dorsey, Billie Holiday, the Andrews Sisters, Connee Boswell, JimmyDorsey, the Mills Brothers, Guy Lombardo, Ella Fitzgerald, Fred Waring, Judy Garland, and Dinah Washington, among others.