This collection primarily consists of materials related to Dr. Isgur's work at Jefferson Lab, though also including some records from his earlier work at the University of Toronto. The bulk of the collection consists of Dr. Isgur's publications and research notes, most of which are handwritten and undated. Also included are correspondence, drafts of Dr. Isgur's writings, as well as published articles that contain notes and editorial comments. The collection also consists of material from the many conferences and lectures that Dr. Isgur attended including notes, transparencies, lecture and presentation outlines and related material.