The collection contains 172 original reel to reel tape recordings of 113 recitals containing approximately 613 works. The works range from the Renaissance to music created for the concerts, even improvised at the events. The reels are accompanied by audio cassette recordings created as service copies and a hard drive containing digitally reformatted preservation and access files.

The Livingston Gearhart Collection of Scores contains compositions and arrangements by Gearhart in published and manuscript forms, as well as sketches and incomplete works. It also contains published scores by other composers annotated by Gearhart.

The collection contains approximately 1300 scores, half of which bear markings entered by Mikhashoff or his colleagues in preparation for performance. The collection includes manuscripts and print publications, both originals and reproductions.