sentences:  He was also a major donor to the Metropolitan's Decorative Arts Department.His house "Killenworth" at Glen Cove was one of the larger Pratt family mansions, built in 1913 in a Tudor style, with 39 panelled rooms, thirteen bathrooms, twelve fireplaces, five cellars, a swimming pool, and flower beds tended by 50 gardeners.It was designed by Trowbridge and Ackerman.