Woolworth Building, engine room looking N.W.

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

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

Woolworth Building, exterior from N.W. corner.

Woolworth Building, rear from N.W. corner.

Woolworth Building, shoring N.W. corner.

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

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

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

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

Woolworth Building, engine room N.E. corner.

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

Woolworth Building, exterior from 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. Engine room from S.E. corner.

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

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

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