Woolworth Building, swimming tank.

Woolworth Building. Swimming tank.

Woolworth Building, swimming tank from S.E. corner.

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

Woolworth Building, basement large room, S.W. corner view from east end.

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

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

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

Woolworth Building. Hall from entrance.

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

Woolworth Building, sub-basement center south.

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

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

Woolworth Building, basement from N.E. corner looking west.

Woolworth Building, engine room.

Woolworth Building, engine room.

Woolworth Building, engine room, pump room from west end.

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

Woolworth Building, general view from S.E.

Woolworth Building, engine room from S.E. corner.