Woolworth Building, switchboard.

Woolworth Building. Detail of switchboard.

Woolworth Building, vault.

Woolworth Building, rendering.

Woolworth Building, boiler room.

Woolworth Building, engine room.

Woolworth Building. Engine room.

Woolworth Building. Grand staircase.

Woolworth Building. Grand staircase.

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. Rathskellar.

Woolworth Building. Corridor on 24th Floor, Woolworth offices.

Woolworth Building, model of foundation.

Woolworth Building. Safe deposit vaults.