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

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

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

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

Woolworth Building, exterior from S.W. corner.

Woolworth Building, engine room looking S.W.

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

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

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

View from Woolworth Building roof looking at S.W. corner of building.

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

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

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

Woolworth Building, boiler room behind east boilers.

Woolworth Building, boiler room looking N.W.