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Longworth House Office Building, by the Allied Architects, ca. 1933

Longworth House Office Building, by the Allied Architects, ca. 1933

D.C. Public Library, Star Collection, Copyright Washington Post

Longworth House Office Building, by the Allied Architects, ca. 1933

A Capitol Growth Spurt

Across America, the 1930s was the era of the Great Depression. On Capitol Hill, it was a decade of rapid expansion. While the Capitol itself remained largely unchanged, the surrounding campus was transformed. Six major building projects greatly expanded Capitol Hill’s facilities.

The construction reflected the growing role and size of the federal government. Projects included: the Supreme Court Building (1929-1935); Longworth House Office Building (1929-1933); Rare Book Room Addition for the Library of Congress’s Thomas Jefferson Building (1929-1933); First Street Addition to the Russell Senate Office Building (1931-1933); New Botanic Garden Conservatory (1932-1933); and the John Adams Building for the Library of Congress (1933-1938).