Harry K. Knapp
American businessman

Harry Kearsarge Knapp (September 25, 1864 – January 31, 1926) was a United States financier and a prominent executive in the Thoroughbred horse racing industry in which he had been a steward, secretary-treasurer and vice-chairman of The Jockey Club.
A graduate of Columbia University, he was a partner with George Hyatt and John S. Van Siclen in the New York City stock brokerage firm, Hyatt & Co. and later a partner in Benedict Drysdale & Co. Harry Knapp was also a director of the Corn Exchange Bank of New York and was the head of the Racquet and Tennis Club.
Harry Knapp married Caroline Burr with whom he had three children. They made their home in New York City and in 1903 built Brookwood Hall, a summer home on more than 100 acres (0.40 km2) at East Islip, on Long Island, New York, now being used as the Islip Art Museum.
Oneck Stable
Harry Knapp became involved in the sport of Thoroughbred racing, operating with his brother, Dr. Gideon Lee Knapp, under the nom de course, Oneck Stable. They owned a number of successful horses, among the best known of which were Sir Walter, winner of the 1896 Brooklyn Handicap and Fashion Plate, winner of the 1910 Metropolitan Handicap.
Walter Rollins was a long-time trainer for the Oneck Stable and was succeeded by William Karrick.
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