Woolworth Building, Building Foundation on 10 and 12 Park Place [Construction zone.]

Woolworth Building, switchboard.

Woolworth Building, vault.

Woolworth Building, switchboard.

Woolworth Building. Detail of switchboard.

Woolworth Building, rendering.

Woolworth Building. Detail of elevator grilles.

Broadway between Barclay Street and Park Place. Woolworth Building foundation work, bird's eye view from Barclay St..

Woolworth Building, general view of exterior.

Woolworth Building, swimming tank.

Woolworth Building, general exterior.

Woolworth Building, engine room.

Woolworth Building, boiler room.

Woolworth Building. Grand staircase.

Woolworth Building. Grand staircase.

Woolworth Building. Engine room.

Woolworth Building, engine room.

Woolworth Building. Swimming tank.

Woolworth Building. Pump room.

Woolworth Building. Boiler room.