Blackwell's Island. The penitentiary.

Blackwell's Island. The penitentiary.

Blackwell's Island. Interior of Penetentiary, dark cells in foreground.

Blackwell's Island. Interior of Penetentiary, dark cells in foreground.

Blackwell's Island. Interior of Penetentiary, dark cells in foreground.

Blackwell's Island. The Lock-step Penitentiary.

Blackwell's Island. The Lock-step Penitentiary.

Blackwell's Island. The Lock-step Penitentiary.

Blackwell's Island. Prisoners Breaking Stone.

Blackwell's Island. Prisoners Breaking Stone.

Blackwell's Island, Cell in Penitentiary.

Blackwell's Island. Prisoners Breaking Stone.

Blackwell's Island. Prisoners breaking stone.

Blackwell's Island, Cell in Penitentiary.

Blackwell's Island, Cell in Penitentiary.

Blackwell's Island. Workhouse.

Blackwell's Island. View down the main walk from superintendent's cottage.

Blackwell's Island. View down the main walk from superintendent's cottage.

Blackwell's Island. Workhouse.

Penitentiary - Blackwell's Island