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Andrew Ellicott (January 24, 1754 – August 28, 1820) was an American land surveyor who helped map many of the territories west of the Appalachians, surveyed the boundaries of the District of Columbia, continued and completed Pierre (Peter) Charles L'Enfant's work on the plan for Washington, D.C., and served as a teacher in survey methods for Meriwether Lewis.
Benjamin Banneker (1731-1806) was a free African American mathematician and astronomer who assisted Andrew Ellicott during the first three months of the 1792 — 1793 survey of the District of Columbia's original boundaries. [7] The stone is one of 40 markers that once lined the District's boundaries.
On January 1, 1793, Andrew Ellicott submitted to the commissioners a report that stated that the boundary survey had been completed and that all of the boundary marker stones had been set in place. Ellicott's report described the marker stones and contained a map that showed the boundaries and topographical features of the Territory of Columbia.
The property of the 3 acres (1.2 ha) area is shared between DeSoto Parish, Louisiana (1 acre) and Panola County, Texas (2 acres), with the marker itself being a direct property of U.S. Government [3] The marker was added to the National Register of Historic Places on April 13, 1977. [ 1 ]
The charters for both colonies referenced a 1608 map based on John Smith’s survey of the ... astronomers David Rittenhouse and Andrew Ellicott would finally extend the line to its terminus—5 ...
Andrew Ellicott taught Lewis and Clark how to use a sextant to map their position. Lewis and Clark would leave from Wood River, Illinois and document the wilderness all the way to the Pacific Ocean. Lincoln: politics and surveying
Andrew Ellicott surveyed this parallel in 1797, which in Pinckney's Treaty two years before had been defined as the border between the United States and the Spanish territory of West Florida. Around the world
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