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, exterior from N.W. corner.

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

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

Woolworth Building, engine room looking N.W.

Woolworth Building, rear from N.W. corner.

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

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

Woolworth Building, shoring N.W. corner.

Woolworth Building. Boiler room.

Woolworth Building, boiler room.

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

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

Woolworth Building, exterior from N.W.

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

Woolworth Building, boiler room behind east boilers.

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

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