Harbor Defenses of New York later became known as the first system of US seacoast fortifications. In New York this was initially limited to the large Fort Jay on Governors Island, along with some small batteries on Oyster Island (later Ellis Island) and Bedloe's Island (later Liberty Island). These were simple earthworks at the time. Congress contributed to building Fort Jay in 1797, and in 1800 the state sold the fort, Governors Island, and Bedloe's Island to the federal government for one dollar. Oyster Island was similarly transferred in 1808. The federal government commenced building improved stone forts at all three locations. In June 1807,
Columbia Island (New York) Columbia Island (New York) Columbia Island (formerly Little Pea Island), is an island in Long Island Sound and part of New Rochelle, New York. It is situated off the south-eastern coast of Davids' Island, immediately adjacent to Pea Island. The island varies in size from about one acre to 175 square feet depending on the tide. It was once owned by the Iselin family who sold it to the Huguenot Yacht Club along with Pea Island in 1936. Three years later the club sold Little Pea Island to CBS, which renamed it "Columbia". As a result of engineering surveys designating