Thomas Jefferson <p class="p1">Thomas Jefferson worked with President <a href="http://mallhistory.org/items/show/152">George Washington</a> to advocate that the nation's capitol be situated on the banks of the <a href="http://mallhistory.org/items/show/424">Potomac</a>. His sketch of a layout for the federal city is the oldest known plan of Washington, DC, and he shared his ideas with many of the early planners and architects of the city, including<a href="http://mallhistory.org/items/show/80"> L'Enfant</a>, <a href="http://mallhistory.org/items/show/108">Hoban</a>, and <a href="http://mallhistory.org/items/show/80">Latrobe</a>. He was the first president to serve entirely in Washington, DC, and he used the <a href="http://mallhistory.org/items/show/20">Ellipse</a> and <a href="http://mallhistory.org/items/show/66">White House</a> grounds for some of his scientific and agricultural experiments during his time in office.</p> <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=39&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Thomas+Jefferson">Thomas Jefferson</a> Image from the Independence National Historical Park Collection, via National Portrait Gallery. <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=38&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=1800-1829">1800-1829</a>