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

Woolworth Building, engine room looking N.W.

Woolworth Building, rear from N.W. corner.

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

Woolworth Building, shoring N.W. corner.

Woolworth Building, exterior from N.W. corner.

Woolworth Building, exterior from N.W.

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

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

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

Woolworth Building, engine room N.E. corner.

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

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

Woolworth Building, boiler room looking N.W.

Woolworth Building, engine room from S.W. corner looking west.

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

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

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

Woolworth Building, engine room from S.E. corner.

Woolworth Building, engine room from S.E. corner.