Columbia subject headings:
Harvard subject headings:
Architecture, Domestic--New York (State)--Long Island--Exhibitions.
Architecture, Modern--19th century--New York (State)--Exhibitions.
Architecture, Modern--20th century--New York (State)--Exhibitions.
Country homes--New York (State)--Long Island--Exhibitions.
Country homes--New York (State)--Long Island.
Mansions--New York (State)--Long Island--Exhibitions.
Princeton subject headings:
Architecture, Domestic--New York (State)--Long Island--Exhibitions.
Country homes--New York (State)--Long Island--Exhibitions.