Proposed Wings for NHB, 1931, by Allied Architects of Washington, D.C, 1931, Smithsonian Archives - History Div, Exterior north elevation (detail), designed by Allied Architects of Washington, D.C., December 1931. These wings, authorized in the Smoot-Elliott bill (approved June 19, 1930), were never built. By Fiscal Year 1933 when the first appropriation of $1,200,000 to begin construction was proposed, budget restrictions forced the shelving of the project. "Owing to the financial situation that arose and the necessary restrictions that this imposed in the National Budget, it was not practicable to include this item in the estimates finally submitted to Congress, nor was there later opportunity to consider it favorably." (USNM Annual Report 1932, pp. 4-5)..