Columbia subject headings:
Davidson, Bruce, 1933---Catalogs.
New York (N.Y.)--Social conditions--Pictorial works--Catalogs.
Photography, Artistic--20th century--Catalogs.
Subways--New York (State)--New York--Pictorial works--Catalogs.
Harvard subject headings:
Davidson, Bruce, 1933-
Documentary photography
New York (N.Y.)--Social conditions--Pictorial works.
Subways--New York (State)--New York--Pictorial works.
Princeton subject headings: