Columbia subject headings:
New York World's Fair (1939-1940 : New York, N.Y.)--Exhibitions.
Harvard subject headings:
New York World's Fair (1939-1940 : New York, N.Y.)
New York World's Fair (1939-1940 : New York, N.Y.)--Exhibitions.
Princeton subject headings:
New York (N.Y.)--Exhibitions.
New York World's Fair (1939-1940 : New York, N.Y.)