Collection ID: Ms Coll 58

Collection context


Morse, Dryden P. (Dryden Phelps), 1924-2002 and Gessman, Lawrence J.
Dryden P. Morse was a heart surgeon who practiced in Philadelphia and then at Deborah Heart and Lung Center in New Jersey. A pioneer in the use of pacemakers, he was an expert on the technology of pacemakers and invented several improvements. The collection contains a small amount of correspondence, published articles and unpublished manuscripts, and information on his inventions and his interactions with pacemaker companies.
1.25 Linear Feet
In English, small amount of Chinese.


Acquisition information:
Donated by Tom Morse, son of Dryden P. Morse, 2015.
Rules or conventions:
Describing Archives: A Content Standard
Scope and Content:

The collection contains biographical materials; some correspondence; publications, both reprints and unpublished articles; materials on Morse's inventions related to cardiac pacemakers and on his relations to companies manufacturing pacemakers; and specifications of pacemakers gathered for Morse's publications.

Biographical / Historical:

Dryden Phelps Morse, a heart surgeon and pioneer in the development and use of pacemakers, was born in Berkeley, California in 1924. During his childhood, he lived in China for two years with his mother and stepfather. He attended Harvard College from 1941 to 1943 and then entered military service in World War II. He received his M.D. from Columbia University College of Physicians and Surgeons in 1947. Morse did most of his residency training in Philadelphia. His thoracic surgery residency was at Hahnemann Hospital and at the Bailey Thoracic Clinic under pioneer heart surgeon Charles P. Bailey. Morse served in the American Medical Corps in the Korean War, 1952-1954. From 1962 to 1972 he was Chairman of the Department of Thoracic and Cardiovascular Surgery at Albert Einstein Medical Center, Northern Division, in Philadelphia. From 1961 to his retirement in 1991 he was associated with Deborah Hospital in Browns Mills, N.J., as an attending physician. From 1979 on, he served as Director of the Pacemaker Clinic, and full-time attending surgeon, Thoracic Surgical Service, at Deborah. Morse published extensively including a book on heart surgery (1963) and three editions of a guide to pacemakers. He was an expert on the technology of pacemakers and invented several improvements such as the Morse-Edwards Horseshoe annuloplasty ring, and a telephone pacer monitoring system with Ted Stern. Morse was a founding member of the North American Society for Pacing and Electrophysiology in 1979, now the Heart Rhythm Society. At least twice he was invited to lecture in China.


Organized into six series: 1. General. 2. Correspondence. 3. Presentations at conferences. 4. Writings. 5. Additional materials on pacemakers and other medical inventions. 6. Additional photographs.


333 Cedar St (inside the Medical Library in the Yale School of Medicine)
New Haven, CT 06510 , USA