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

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

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

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

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

Woolworth Building, exterior from S.W. corner.

Woolworth Building, basement large room, S.W. corner view from east end.

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

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

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

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

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

Woolworth Building, from Broadway looking S.W.

Woolworth Building, detail S.W. corner Barclay Street.

Woolworth Building, sub-basement swimming pool from S.W. corner.

Woolworth Building. Boiler room.

Woolworth Building, boiler room.

Woolworth Building, boiler room looking N.W.

Woolworth Building, from center Broadway looking S.W.

Woolworth Building, engine room looking S.W.