Columbia subject headings:
Harvard subject headings:
Lower East Side (New York, N.Y.)--Social conditions.
Museum of the City of New York--Photograph collections.
New York (N.Y.)--Pictorial works
Photobooks
Poor--New York (State)--New York
Riis, Jacob A. (Jacob August), 1849-1914--Photograph collections.
Tenement houses--New York (State)--New York
Princeton subject headings:
Poor--New York (State)--New York.
Tenement houses--New York (State)--New York.