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President George Washington selects sites flanking the White House as location for Executive Offices. The designs were approved on his last day in office but, construction was delayed due to lack of funds.
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The Executive Office location was moved closer to the Capitol. Former President, George Washington protests and successfully lobbies for the original site. Construction begins on Treasury Department southeast of White House.
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Construction begins on War Department building southwest of White House to also house the Navy and State Departments.
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The Executive office buildings and White House were burned by British troops, but later reconstructed with additional floors. Two buildings were added north of the original two. The State Department in the northeast building, Treasury Department in the southeast building, War Department in the northwest building and the Navy Department in the southwest building.
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The Treasury Department burns in a fire and Robert Mills is hired to design a "fireproof" building. Construction was set to begin in 1836.
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Mills prepares several proposals to combine War and Navy buildings into a single large executive office building equal in size to the Treasury building.
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Thomas U. Walter proposes a single executive office building west of White House equal in size to his design for Treasury building extension.
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Old State Department building demolished to build Treasury building extension. State Department moves to a former orphanage building at S and 14th Streets, NW.