John Graham Yerkes

John Graham Yerkes was born in 1930 in Philadelphia, Pennsylvania. He was the son of John G. and Ethel Yerkes. He apprenticed as a dental technician while at Haddonfield High School in Haddonfield, New Jersey. Yerkes established his own dental laboratory in Hartford, Connecticut, after moving to Connecticut with his family in 1956. After he sold that business 20 years later, he joined the J. M. Ney Company, a dental materials manufacturer in Bloomfield, to conduct the company's quality assurance activities. He died on 7 December 2016 in Newington, Connecticut.

Source: Obituary: John graham yerkes. (2016, Dec 11). Hartford Courant Retrieved from https://www.proquest.com/newspapers/obituary-john-graham-yerkes/docview/1847630207/se-2