Knollwood Country Club is an 18-hole private golf course in Elmsford, New York, built in 1894 and designed by Lawrence Van Etten. It sits in the $$$ (premium) price range for golf in New York. The season runs Feb 1 to Dec 1 (closed on Mondays). Tee times can be booked 3 days in advance.
Details like fees and seasons change, so call the course before you head out.