Description: Haver Island saw the construction of a fort in 1777 in Albany County, on Peebles Island. It was used as a campground along with Van Schaick Island as early as 1709. Van Schaick and Haver Island were once again utilized as a camp and supply depot in 1777. The fort came equipped with three earthwork Batteries, various blockhouses, and was constructed under the leadership of Polish military engineer, Tadeusz Kościuszko, in August 1777. Haver island was occupied in 1782 due to conflicts with Vermont.