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, sub-basement center south.

Woolworth Building, boiler room behind east boilers.

Woolworth Building. Boiler room.

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, 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, sub-basement engine room from S.E. 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 from] center [loo]king N.W.

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

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

Woolworth Building, sub-basement swimming pool from S.W. corner.