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

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

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

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

Woolworth Building, engine room looking N.W.

Woolworth Building, from Broadway looking S.W.

Woolworth Building, from Broadway looking S.W.

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

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

Woolworth Building, from center Broadway looking S.W.

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

Woolworth Building, south section from Broadway looking S.W.

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

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

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

Woolworth Building, exterior from S.W. corner.

Woolworth Building, engine room.

Woolworth Building. Engine room.

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

Woolworth Building, engine room from center looking west.