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

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

Woolworth Building, engine room looking N.W.

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

Woolworth Building, boiler room looking north.

Woolworth Building, boiler room looking north.

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

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

Woolworth Building. Boiler room.

Woolworth Building, boiler room.

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

Woolworth Building, from center Broadway side looking N.W.

Woolworth Building, boiler room.

Woolworth Building, shoring N.W. corner.

Woolworth Building, exterior from N.W.

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

Woolworth Building, exterior from N.W. corner.

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

Woolworth Building, boiler room, from south looking north.

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