Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. Prisoners Breaking Stone.
Henry G. (Henry Granger) Piffard (1842-1910),Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. The Lock-step Penitentiary.
Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. The penitentiary.
Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. Interior of Penetentiary, dark cells in foreground.
Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. Workhouse.
Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island, Cell in Penitentiary.
Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. View down the main walk from superintendent's cottage.
Jacob A. (Jacob August) Riis (1849-1914)Blackwell's Island. Baby-ward and nurses in Charity Hospital.
