GWMFOU_170517_370
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Work Underway:
Marble blocks are stored in the foreground as workmen erect the new House and Senate wings of the Capitol to the design of architect Thomas U. Walter. Because the porous sandstone used for the original building had deteriorated, Walter built the expansion in marble. Eventually, most of the original exterior sandstone was covered, but some remains visible on the interior.
President State of the Capitol at Washington
Illustrated London News, January 8, 1853
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