Woolworth Building. Grand staircase.

Woolworth Building. Rear of grand staircase toward front.

Woolworth Building. Looking up grand staircase.

Woolworth Building. Detail of Broadway Trust staircase.

Woolworth Building, switchboard.

Woolworth Building, rendering.

39 Broadway. Harriman Building, basement staircase.

Woolworth Building, boiler room.

Woolworth Building, engine room.

Woolworth Building. Swimming tank.

Woolworth Building. Pump room.

Woolworth Building. Boiler room.

Woolworth Building

Woolworth Building, vault.

Woolworth Building, engine room.

233 Broadway. Woolworth Building.

Woolworth Building, general exterior.

Woolworth Building, Broadway looking south.

Woolworth Building, engine room, filters.

Woolworth Building. Hall from entrance.