There are four-corner boundary stones marking the cardinal points of the forty-stones making up the Original Federal Boundary Stones of the District of Columbia.
Original Federal Boundary Stone
District of Columbia
Placed 1791-1792
Protected by Dist. of Co. Chapter
Daughters of the American Revolution
1916 — — Map (db m190187) HM
Original Federal Boundary Stone
District of Columbia
Placed 1791-1792
Protected by Maryland Chapter
Daughters of the American Revolution
1916 — — Map (db m154844) HM