Historic buildings

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.

Photograph in area excavated for Transformer and Air Compressor buildings, north-east of the North Portico during the renovation of the White House. Concrete underpinning columns, and foundation work is in progress of construction.

View from window of Room G-3 looking west along the south wall showing progress in concrete footing work during the renovation of the White House.

Sketch from main corridor, west of Lobby, to the east end of the White House, showing excavation work below basement and interior steel supporting columns. This was made during the White House renovation.

Concrete beam at foundation level across the floor of the Broadcasting Room, during the renovation of the White House. The west wall of the building is on the right.

West view along north wall from window in Room G-28 showing progress in excavating the eastern and southwest sections and demolition of the northeast area. This was taken during the renovation of the White House.

East view along south wall from the west window in the Housekeeper's Office, G-15, during the renovation of the White House. The Allis-Chalmers Diesel-powered Cletrac shovel is loading the truck which goes out through the opening in the south wall near the east end.