Woolworth Building, boiler room from N.W. corner.

Woolworth Building, boiler room looking N.W.

Woolworth Building, engine room from N.W. corner.

Woolworth Building, boiler room from N.E. corner.

Woolworth Building, exterior from N.W. corner.

Woolworth Building, rear from N.W. corner.

Woolworth Building, boiler room from S.W. corner.

Woolworth Building, shoring N.W. corner.

Woolworth Building, sub-cellar N.W. corner.

Woolworth Building, from S.E. corner looking N.W.

Woolworth Building, engine room looking N.W.

Woolworth Building, exterior from N.W.

Woolworth Building, sub-cellar, pit in N.W. corner.

Woolworth Building, [from] Barclay looking N.W.

Woolworth Building, boiler room.

Woolworth Building, boiler room.

Woolworth Building. Boiler room.

Woolworth Building, sub-basement from N.E. corner room from S.W. corner.

Woolworth Building, basement from N.W. corner looking east to Park Place.

Woolworth Building, engine room from S.W. corner looking N.E.