Woolworth Building. Grand staircase.

Woolworth Building. Looking up grand staircase.

Woolworth Building. Rear of grand staircase toward front.

Woolworth Building. Detail of Broadway Trust staircase.

Woolworth Building, vault.

Woolworth Building, switchboard.

39 Broadway. Harriman Building, basement staircase.

Woolworth Building, rendering.

Woolworth Building, switchboard.

Woolworth Building. Engine room.

Woolworth Building, engine room.

Woolworth Building, boiler room.

Woolworth Building, swimming tank.

Woolworth Building, general exterior.

Woolworth Building, engine room.

Woolworth Building, engine room.

233 Broadway. Woolworth Building.

Woolworth Building, general exterior.

Woolworth Building. Safe deposit vault.

Woolworth Building, boiler room.