{"nrhp_refnum":"91000009","name":"Southwest No. 4 Boundary Marker of the Original District of Columbia","other_names":["SW4,Jurisdiction Stone","DHR File No. 00-22"],"category":"object","location":{"address":"King St. N of jct. with Wakefield St.","address_restricted":false,"city":"Alexandria","county":"Arlington County","state":"VA","lat":38.83169933700003,"lon":-77.09196609899999,"geom_source":"nps_gis"},"listed_date":"1991-02-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Community Planning and Development","Politics/Government"],"significance_levels":["national"],"summary":{"what_it_is":"A surviving boundary stone from the original District of Columbia survey, marking the fourth mile on the southwest line, located beside King Street near Wakefield Street on the Arlington County and City of Alexandria line in Virginia. It was placed in 1791-1792 and later relocated.","why_significant":"It marked the fourth mile on the southwest side of the District, four miles from the South Cornerstone at Jones Point. It is one of a rare group of surviving boundary markers tied to the development of the Federal city. Criteria Consideration B applies because the marker was moved when Route 7 (King Street) was built.","narrative":"Beside King Street near Wakefield Street, a weathered fragment of Aquia sandstone marks the fourth mile of the southwest boundary of the original District of Columbia. Placed in 1791-1792, it stands four miles from the South Cornerstone at Jones Point. Its top has been missing since the surveys of 1894-1897 and 1906, and plow scratches mark what remains. In 1906 a local farmer helped surveyors find it, saying he had hit it with his plow many times. The stone later nearly disappeared under fill when Route 7 was regraded, then was moved close to its original spot. A wrought iron fence surrounds it, and a bronze plaque placed in 1916 by the Daughters of the American Revolution identifies it as an original federal boundary stone. It lies near three Civil War forts of the District's defenses. It was listed for its role in the creation of the Federal city, as one of a rare surviving group of markers.","period_of_significance":"1791-1916","architect_builder":"Unknown","architectural_style":null,"criteria":["A"],"status_note":"Only a small portion of the Aquia sandstone remains, with the top missing and plow scratches. It sits inside a wrought iron fence that needs repainting, and a 1916 bronze plaque is attached. The property is owned by the Virginia Department of Transportation.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:59.956666-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/54/6785/41678554/content/electronic-records/rg-079/NPS_VA/91000009.pdf"},"photo":null,"district":{"nrhp_refnum":"99000368","name":"Fairlington Historic District","url":"https://nationalhistoricalregister.com/districts/virginia/fairlington-historic-district-99000368/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/41678554","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/virginia/arlington-county/southwest-no-4-boundary-marker-of-the-original-district-of-columbia-91000009/"}