Woolworth Building, sub-basement rear of boilers, west side.

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

Woolworth Building. Boiler room.

Woolworth Building, boiler room.

Woolworth Building, sub-basement center south.

Woolworth Building, boiler room.

Woolworth Building, boiler room behind east boilers.

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

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

Woolworth Building, boiler room looking N.W.

Woolworth Building, boiler room looking north.

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

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

Woolworth Building, sub-basement, coal bunkers from east end.

Woolworth Building, boiler room looking north.

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

Woolworth Building, [sub-basement from] center [loo]king N.W.

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

Woolworth Building, boiler room, from south looking north.

Woolworth Building, between engine and boiler room looking East.