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200-year-old boundary markers in D.C. rededicated

In 1792, surveyor Andrew Ellicott and astronomer Benjamin Banneker, at the request of President George Washington and Secretary of State Thomas Jefferson, used 40 limestone markers to carve out a 40-square-mile area between Maryland and Virginia to create Washington, D.C.

“These stones are our nation’s oldest national landmarks that were placed by Andrew Ellicott and Benjamin Banneker,” said Sharon K. Thorne-Sulima, regent for the Martha Washington Chapter of the D.C. Daughters of the American Revolution. “They officially laid the seat of government of our new nation.”

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