Samuel David GrossBorn 8 Jul 1805; died 6 May 1884 at age 78.Samuel David Gross was an American surgeon, teacher of medicine, and author of an influential textbook on surgery and the widely read Elements of Pathological Anatomy (1839). He was a prominent Philadelphia surgeon who pioneered methods for suturing nerves and tendons. Other specialties included operations for bladder stone and intestinal wounds; he invented new techniques and instruments. Later he served as president of the American Medical Association (1847). Thomas Eakins portrayed him in a famous painting, “The Clinic of Dr. Gross” (1875).