ARLHS USA-409 - Jones Point On the Potomac River near Alexandria, VA and Washington, D. C. http://www.nps.gov/gwmp/planyourvisit/jonespoint.htm https://www.unc.edu/~rowlett/lighthouse/va.htm http://www.lighthousefriends.com/light.asp?ID=439 These coordinates are verified. -77.04061330916, 38.790362089079, 0