Henry Clay Frick II (October 18, 1919 – February 9, 2007) colloquially Clay Frick[1] was an American physician and professor of medicine at the Columbia University College of Physicians and Surgeons.
After World War II, he served in the U.S. Army Medical Corps with the rank of captain.
In the 1960s, he volunteered for two tours of duty in the Vietnam War during which he served in a field hospital.
In this later capacity he directed the restoration, according to his aunt's wishes, of the Frick family's Pittsburgh estate, Clayton.
He also was a trustee of the Wildlife Conservation Society and the American Museum of Natural History.