This series contains audio from National Institutes of Health Symposium and the Duke University Medical School Advisory Committee (MEDSAC). Also included are materials from lectures, seminars, meetings, and conferences. Audiovisual formats include audiocassette tapes, VHS tapes, U-Matic tapes, 7-inch reel-to-reel audio, dictabelt, 16mm 12-inch-video, Betacam (large) tapes, 5-inch reel-to-reel audio, wire recordings, CDs, and DVDs. Materials date from 1953 to 2011.