Historical Marker
Washingtons Headquarters
Historical marker location:
Plattekill, New York
( Marker is on New York State Thruway (Interstate 87), on the right when traveling north.)
Marker installed: 1963
Liberty and Washington Streets, Newburgh. Historic New York.
The first American chess tournament was held in New York City in 1843, and it was won by a 21-year-old named Paul Morphy.