Edward Clark (architect)

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Edward Clark
Edward Clark architect - Brady-Handy.jpg
Born (1822-08-15)August 15, 1822
Philadelphia, Pennsylvania, USA
Died January 6, 1902(1902-01-06) (aged 79)
Washington, D.C, USA
Nationality American
Buildings Patent office building

Edward Clark (August 15, 1822 – January 6, 1902) was an American architect who served as Architect of the Capitol from 1865 to 1902.

He was Thomas U. Walter's student, chief assistant, and successor. Prior to working with Walter, he had received training in freehand and mechanical drawing as well as engineering. Clark was the superintendent of construction on the Patent Office and Post Office additions under Walter. He belonged to the American Institute of Architects.

Clark was appointed Capitol architect by President Andrew Johnson upon his mentor's resignation on 30 August 1865 and completed the extension project in 1868. A year earlier, the old Capitol and the Grounds, as well as the extensions, were placed under the control of the Architect when the office of Commissioner of Public Buildings was abolished. Clark introduced many technological improvements to the Capitol, including electricity, steam heat, and elevators. During Clark's tenure, the Capitol Grounds were greatly enlarged and Frederick Law Olmsted, the greatest landscape architect of the day, was commissioned to design the grounds and terraces. Also during his administration, the Library of Congress moved to its own building, and the west central interior of the Capitol was reconstructed.

In 1892, Clark designed The Mansion on O Street, a private residence for himself and his brother, James "Champ" Clark, who served as Speaker of the House (1911-1919). During construction, Clark incorporated leftover building materials from the concurrent construction projects at the U.S. Capitol where he served as Architect.[1] Today, the building consists of five connected town houses with over 100 rooms and 32 secret doors.


  1. ^ O Street Museum Foundation. http://www.omansion.com/museum/about/history/