Benjamin_Banneker:_SW-9_Intermediate_Boundary_Stone
Benjamin Banneker: SW-9 Intermediate Boundary Stone
United States historic place
Benjamin Banneker: SW 9 Intermediate Boundary Stone, also known as an Intermediate Stone of the District of Columbia, is a surveyors' boundary marker stone. The stone is located on the original boundary of the District of Columbia (see: Boundary markers of the original District of Columbia and History of Washington, D.C.) The stone is now on the boundary of Arlington County, Virginia and the City of Falls Church. It is within the two jurisdiction's Benjamin Banneker Park at 6620 18th Street North, Arlington.[3][4]
The marker stone was named and declared a National Historic Landmark in 1976 at the instigation of the Afro-American Bicentennial Corporation. The name of the marker honors Benjamin Banneker, a free African American astronomer who in 1792 assisted in the early part of the survey that established the original boundaries of the District of Columbia.[1][2][5] The stone was the first of the District of Columbia boundary markers to be listed on the National Register of Historic Places.