Woolworth Building, boiler room.

Woolworth Building, boiler room behind east boilers.

Woolworth Building. Boiler room.

Woolworth Building, boiler room looking north.

Woolworth Building, boiler room looking north.

Woolworth Building, boiler room looking N.W.

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

Woolworth Building, boiler room, from south looking north.

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

Woolworth Building, sub-basement central section, boiler room.

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

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

Woolworth Building, between engine and boiler room looking East.

Woolworth Building, engine room.

Woolworth Building, Boiler Plant [Construction zone.]

Woolworth Building, engine room.

Woolworth Building, sub-basement midway between boiler and engine room looking east.

Woolworth Building. Engine room.

Woolworth Building, engine room.

Woolworth Building. Grille room looking East.