Long Island's Gold Coast - A guide to Long Island's mansions, past and present. Includes mansion ruins, and those used in movies. - http://www.ligoldcoast.com/
Long Island Gold Coast - Exhibit which portrayed some of the opulent mansions that have been transformed into educational institutions. - http://www.liu.edu/cwis/cwp/library/exhibits/goldcoas.htm
Society for the Preservation of Long Island Antiquities - Not-for-profit organization devoted to the preservation of architecture in the region. Information given on historic house museums, preservation services, events and membership. - http://www.splia.org/