Woolworth Building, air cushions from center south.

Woolworth Building, cellar, air cushion #15-18.

Woolworth Building, air cushions #3, 4 and 5.

Woolworth Building, air cushion #14, 15 and 16.

Woolworth Building, air cushion #15, 16, 17 and 18.

Woolworth Building, air cushions, from north end looking south.

Woolworth Building. Air Compressor [Construction zone.]

Woolworth Building, Caisson, Air Pressure Station [Construction zone.]

Woolworth Building, vault.

Woolworth Building. Engine room.

Woolworth Building. Grand staircase.

Woolworth Building. Grand staircase.

Woolworth Building, engine room.

Woolworth Building, boiler room.

Woolworth Building, switchboard.

Woolworth Building. Safe deposit vault.

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

Woolworth Building, rendering.

Woolworth Building, switchboard.

Woolworth Building, boiler room looking north.