1. Creation of a National Capital Beth Roland 8 th Grade Science Jacobs Fork Middle

2. Residence Act of July 16, 1790 Act passed by Congress that gave authorization to President George Washington to select a site to place the National Capital: Act passed by Congress that gave authorization to President George Washington to select a site to place the National Capital: – Must be a 100 square mile tract, in a square, with each side measuring 10 miles – Must be located on the Potomac River between Alexandria, Virginia and Williamsport, Maryland

3. The Survey of 1791-1792 Then secretary of State, Thomas Jefferson directed Major Andrew Ellicott to begin a survey on February 12, 1791 – Ellicott hired Benjamin Banneker, an astronomer and mathematician He placed the Southern most point directly at the Lighthouse of Jones Point Alexandria – Laid on his back to find the point at which 6 stars would pass directly over that spot in a given night

4. Lay of the Land

5. The National Capital Created!

6. Using Geometry, District of Columbia is Outlined! Once the first point was plot, Ellicotts team embarked on a 40 mile journey, surveying 10- mile lines: – Starting at the southernmost point, heading Northwest Then Northeast Then Southeast Finally, southwest back to the starting position

7. Dem Stones, Dem Stones! The Alexandria Masonic Lodge placed a commemorative stone at the southern most corner on April 15 th, 1791 in a ceremony honoring Ellicott and federal district commissioners – Other stones, each made of Aquia Creek Sandstone, were placed at 1-mile intervals along the boundaries for a total of 40 stones laid Side facing DC was inscribed with Jurisdiction of the United States Opposite side mentioned either Virginia or Maryland depending on its original state location

8. Boundary Stones, past, present, and future The boundary stones as the OLDEST federal monuments. Surviving over 220 years! – Of the original 40 stones, 36 have survived in or near their original locations 2 replacement stones (SW 2 and SE 8) 2 have been lost/destroyed *Marcus Baker visited each stone during the summer of 1894. * Fred Woodward photographed all 39 surviving boundary stones (all but SW2) in 1906

9. Present and Future In 1915, The Washington DC chapter of the Daughters of the American Revolution voluntarily assumed the responsibility of caring for the stones – Tall, iron fences were erected around each surviving stone – Several have been damaged/lost – Resurvey took place in 1990 to celebrate the DC bicentennial which located two of the then- missing stones, SE8 and SE4

10. Interesting Stones! Southernmost stone at Jones Point Lighthouse SW2 SW4 NW7 NW8 NE6 NE7 SE3

11. Interesting Stones SE4 SE6