located in Arlington County, the City of Falls Church and Fairfax County in Northern Virginia at the original west corner of the District of Columbia, memorializes Ellicott. Ellicott Circle and Ellicott Street in the District of Columbia also memorialize him. Publications and archives Ellicott, Andrew, and David Gillespie. n.d. Andrew Ellicott papers. Correspondence, maps, charts, and reports of astronomical observations chiefly concerning Ellicott's work in surveying the boundary between the U.S. and Florida under the San Lorenzo Treaty (1795) and also his surveys of the city of Washington, the boundary between Georgia and South Carolina, the town of Presque Isle (later Erie), Pa., and the boundary between the U.S. and Canada under the Treaty of Ghent (1814). Other subjects discussed are international politics, Indian affairs, and the Blount conspiracy (1797). Includes papers of Ellicott's assistant David Gillespie. Family correspondents include Ellicott's wife Sarah and his brother Joseph. Other correspondents include Daniel Clark, Jr., William Dunbar, Manuel Gayoso de Lemos, David Gillespie, Benjamin Hawkins, Thomas Jefferson, James Madison, Stephen Minor, Robert Patterson, Timothy Pickering, John Pitchlynn, Winthrop Sargent, Cornelius P. Van Ness, and James Wilkinson. 925 items. 7 containers. 2 microfilm reels. 1.1 linear feet. Andrew Ellicott. 1818. "Astronomical Observations, &c. Communicated by Andrew Ellicott, Esq." Transactions of the American Philosophical Society, New Series, Vol. 1, (1818), pp. 93–101. United States, Isaac Briggs, Andrew Ellicott, Albert Gallatin, John Garnett, F. R. Hassler, James Madison, Joshua John Moore, Robert Patterson, and Roger Chew Weightman. 1811. Message from the president of the U. States, transmitting a report of the secretary of the Treasury, on the execution of the act providing for the survey of the coast of the U. States.: February 4, 1811. Printed by order of the Senate of the United States. Washington City [D.C.]: Printed by R.C. Weightman. President's message, addressed to the Senate, signed on p. [3]: James Madison. Letter of transmittal from the Dept. of the Treasury signed on p [4]: Albert Gallatin. Includes a circular letter from Albert Gallatin to Robert Patterson, Andrew Ellicott, F.R. Hassler, John Garnett, Isaac Briggs, Joshua J. Moore and James Madison, outlining the broad scope of the proposed survey and requesting the name of "any person whom you might recommend as capable of acting in the different parts of the work," followed by the response of each. Andrew Ellicott. 1809. "A Short and Easy Rule for Finding the Equation for the Change of