Columbia subject headings:
Tenement houses--New York (State)--Brooklyn (New York)
Working class--Dwellings.
Harvard subject headings:
Brooklyn (New York, N.Y.)
Housing--New York (State)--New York
Tenement houses--New York (State)--New York
Working class--Dwellings
Working class--Dwellings--New York (State)--New York.
Princeton subject headings: