Columbia subject headings:
Documentary photography--History.
Photographers--United States.
Riis, Jacob A. (Jacob August), 1849-1914.
Urbanization--United States--History.
Harvard subject headings:
Documentary photography--United States--History.
Photographers--United States
Riis, Jacob A. (Jacob August), 1849-1914.
Urbanization--United States--History
Princeton subject headings:
Documentary photography--History.
Photographers--United States.
Riis, Jacob A. (Jacob August)
Urbanization--United States--History.