Dellwood Country Club is an 18-hole private golf course in New City, New York, built in 1920 and designed by A. W. Tillinghast. It sits in the $$$ (premium) price range for golf in New York. The season runs May 1 to Nov 1 (closed on Mondays). Tee times can be booked 4 days in advance. Play is generally limited to members and their guests.
Details like fees and seasons change, so call the course before you head out.