Woolworth Building, boiler room looking north.

Woolworth Building, boiler room, from south looking north.

Woolworth Building, boiler room.

Woolworth Building. Boiler room.

Woolworth Building, boiler room behind east boilers.

Woolworth Building, boiler room.

Woolworth Building, boiler room looking N.W.

Woolworth Building, between engine and boiler room looking East.

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

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

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

Woolworth Building. Grille room looking East.

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

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

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

Woolworth Building, engine room looking S.W.

Woolworth Building, engine room looking N.E.

Woolworth Building, from S.E. corner looking north.

Woolworth Building, north section from Broadway looking north.

Woolworth Building, engine room looking N.W.