National Park Service

View from window of Room G-17 along north wall showing progress in excavation of area below basement, during the White House renovation.

Photograph taken from south window of Room G-17 looking east along north wall, during the White House renovation. The area below the basement has been excavated except for the walls and foundations of the rooms along the north wall west of the central entrance.

Excavation for extension of tunnel at northeast corner of the White House. Sketch by the artist Lili Rethi. This was prepared during the renovation of the White House.

Northeast view from concrete beam at center of south side of White House. Members of the architect's office are examining excavations for concrete footings of permanent steel columns.

Workmen with air hammers are taking down the concrete ceiling and walk of the Electrician's Shop to the east of the North Portico during the renovation of the White House.

Northwest view from the concrete beam at the south central part of the White House showing the interior steel framework supporting the roof and third Floor during renovation.

View along south wall of the White House looking west from center of excavated area. The earth along the walls was left unexcavated until cross beams. running north and south, were installed to prevent walls from bulging.

Northeast view from the concrete beam at the south central part of the White House showing the permanent and temporary supporting columns. The temporary horizontal beams, running from the north to the south wall, were installed to prevent walls from bulging during excavation below the basement level.

Sketch of interior steel framework and excavation work looking west from the east entrance of the Ground Corridor by the artist Lili Rethi. This was prepared during renovation work on the White House.

Photograph of area along north wall to the west of the central doorway of the ground floor. This is the final area to be excavated during the White House renovation.