Dr. Jack Malcolm Layton was a founding faculty member of the University of Arizona College of Medicine and was the first department head hired to the College of Medicine. On May 1, 1967 he became Professor and Head of the Department of Pathology and served in those capacities for 20 years. He was also Director of Clinical Pathology for the university’s hospital and from July 1, 1971 until early 1973 served as Acting Dean of the College of Medicine and Acting Director of the UA’s Arizona Medical Center while the founding dean, Merlin K. DuVal, served as Assistant Secretary of Health in the U.S. Department of Health, Education and Welfare. This collection consists primarily of documents relating to the early history of the UA College of Medicine including its Department of Pathology, Layton’s Acting Deanship, and the Medical Service Plan and other clinical faculty matters. It also includes information about Layton’s career before he came to the UA, information about his professional society contributions, honors and awards he received, various presentations he made and it also includes some photographs. Formerly collection number HT 0022.