books.google.co.in - The first architect trained in America, Robert Mills (1781-1855) is best known as the designer of many iconic buildings in our nation's capital: the Washington Monument, the Department of Treasury Headquarters, the Patent Office Building (now National Portrait Gallery), and the Post Office Headquarters....http://books.google.co.in/books/about/Robert_Mills.html?id=BKAwV_ABLvIC&utm_source=gb-gplus-shareRobert Mills