Woolworth Building, air cushions #7-10.

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

Woolworth Building, air cushions from center south.

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

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, Under 5 Barclay [Construction zone.]

Woolworth Building, vault.

Woolworth Building, switchboard.

Woolworth Building, rendering.

Woolworth Building, main entrance and stores.

Woolworth Building, switchboard.

Woolworth Building, feedwater filters and blowers.

Woolworth Building, Under No. 3 Barclay [Construction zone.]

Woolworth Building

Woolworth Building, engine room.

Woolworth Building. Engine room.

Woolworth Building. Grand staircase.