Woolworth Building. Swimming tank.

Woolworth Building, basement room over swimming tank, view from entrance.

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

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

Woolworth Building, vault.

Woolworth Building, switchboard.

Woolworth Building, boiler room.

Woolworth Building. Engine room.

Woolworth Building. Grand staircase.

Woolworth Building. Grand staircase.

Woolworth Building, engine room.

Woolworth Building. Pump room.

Woolworth Building. Boiler room.

Woolworth Building, boiler room.

Woolworth Building, engine room.

Woolworth Building. Safe deposit vault.

Woolworth Building

Woolworth Building. Hall from entrance.

Woolworth Building, Broadway looking south.

Woolworth Building, engine room, filters.