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.

Woolworth Building, boiler room looking N.W.

Woolworth Building, boiler room behind east boilers.

Woolworth Building, between engine and boiler room looking East.

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

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

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.E. corner.

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

Woolworth Building. Grille room looking West.

Woolworth Building, north section from Broadway looking north.

Woolworth Building. Grille room looking East.

Woolworth Building, from Barclay Street looking north.

Woolworth Building, engine room looking N.W.

Woolworth Building, engine room looking S.W.