Over 250 16-inch broadcast transcriptions dated from July of 1941 through February of 1950, divided more or less evenly between news material (principally from the NBC "Blue" network) and "classical" music: largely orchestral music, with some opera selections.
Printed music and some manuscripts from Dallas-Fort Worth area radio stations WFAA and WBAP, accumulated through the decades in which they employed live radio orchestras.
A very large amount of sheet music, both popular and classical, including a significant segment of choral and sacred works from when WOR employed an in-house radio orchestra.