2008. External links Old Long Island - Dedicated to the preservation of Long Island's Gold Coast estates LIGC - Over 700 tags identifying Long Island's Gold Coast mansions and gardens at Wikimapia Gold Coast Mansions of Long Island, New York Long Island's Gold Coast Past and Present "Gold Coast Mansions"—episode of the PBS television documentary series Treasures of New York History, NYIT de Seversky Mansion American upper class Geography of Long Island Geography of Nassau County, New York Geography of Queens, New York Geography of Suffolk County, New York Long Island Sound New York metropolitan area