Since he opened his offices for the practice of his profession of dentistry in Rome, Oneida county, New York, Dr. Harry A. Sinclair has enjoyed a constantly increasing measure of success, and although he is one of the younger dentists of the city he has acquired a practice that is of truly adult proportions. He was born at Clark Mills, New York, on September 8, 1891. His parents, Charles E. and Anna M. (Vandenburg) Sinclair, are natives of Oneida county, New York, where the father was engaged in the contracting and building business at Westmoreland and Rome for a time, and then moved to Massachusetts, Harry A. being six years of age. After two years they returned to this vicinity, where the father continued in the contracting business, he and his wife now living at No. 512 North Madison street. They were the parents of four children, two sons and two daughters, Harry A. being the oldest child.
Harry A. Sinclair obtained his elementary education in the public schools of Westmoreland and Rome Free Academy, and for his professional studies attended the University of Pennsylvania, at Philadelphia, Pennsylvania, where he received his degree of D. D. S. and graduated in the class of 1915. Immediately after graduating Dr. Sinclair opened offices in Rome for the practice of his profession and has remained there ever since. During the World war he did such dental work as was required for the drafted men. The Doctor is a member of the National, State and Fifth District Dental Societies, is a director of the Kiwanis Club and a member of the Masonic Country Club. Fraternally he is affiliated with the following Masonic bodies: Hathaway Lodge, No. 869; Fort Stanwix Chapter, No. 153, R. A. M.; Rotica Council, No. 12, Royal and Select Masters; the Ancient Accepted Scottish Rite bodies of the Valley of Utica; and Zeba Grotto, No. 4, M. O. V. P. E. R. He is also a member of the Benevolent Protective Order of Elks.
Dr. Sinclair was married in Rome, on September 8, 1916, to Miss Mildred L. Pierce, who died on February 4, 1920, leaving two children: Donald and Edwin. On September 28, 1922, Dr. Sinclair was married to Miss Luella M. Connick, daughter of James Connick. Dr. Sinclair is a member of the Methodist Episcopal church and an attendant at the First Methodist church in Rome. His hobbies are hunting, fishing and the outdoor life.