Northwest #6 Traditional Cache
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Difficulty:
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Terrain:
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Size: 
(micro)
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Located in a small park on Western Avenue.
There is a nice plaque about the stones here.
Looking for a black key case.
The Residence Act of July 16, 1790, as amended March 3, 1791, authorized President George Washington to select a 100-square-mile site for the national capital on the Potomac River between Alexandria, Virginia, and Williamsport, Maryland. President Washington selected the southernmost location within these limits, so that the capital would include all of present-day Old Town Alexandria, then one of the four busiest ports in the country. Acting on instructions from Secretary of State Thomas Jefferson, Major Andrew Ellicott began surveying the ten-mile square on February 12, 1791.
Ellicott, a prominent professional surveyor, hired Benjamin Banneker, an astronomer and mathematician from Maryland, to make the astronomical observations and calculations necessary to establish the south corner of the square at Jones Point in Alexandria. According to legend, "Banneker fixed the position of the first stone by lying on his back to find the exact starting point for the survey ... and plotting six stars as they crossed his spot at a particular time of night." From there, Ellicott's team embarked on a 40-mile journey, surveying ten-mile lines first to the northwest, then the northeast, next southeast, and finally southwest back to the starting point, clearing twenty feet of land on each side of the boundary.
Additional Hints
(Decrypt)
Ohf Fgbc?