The collection consists of approximately 100 boxes of music manuscripts out of a larger collection of over 700 boxes of sheet music used by the orchestra at radio station WOR. The manuscripts contain the work of numerous arrangers, including Sy Oliver, Joe Glover, Charles Maehl, Bill Challis, Ralph Barnhart, Agustin Borguno, and Lew Davies, along with the work of numerous copyists identifiable by their union stamps. The union stamps also correlate to approximate dates. Specific dates are noted where available. The collection contains both popular music and classical selections, including much of the series of J.S. Bach cantatas that the station broadcast, and other lesser known works.