The Ronald T. Rolley Collection covers his years on the faculty at the Johns Hopkins University School of Medicine. It consists of correspondence, manuscripts, and other materials related to Rolley's studies in tumor and transplantation immunology. Included are materials related to organ transplantation, procurement, handling, and tissue typing. Also included are papers relating to Rolley's work at various Baltimore hospitals, as well as copies of the Johns Hopkins Hospital Pharmacy and Therapeutic Committee Newsletter from 1973 to 1977.