Also, of the four corners of DC...........only the southern one had any type of marking..........the other ones were simply where the two sides of the square on its side meet...........Jones point.........in Alexandria, VA,.......and on the map, Jones point was named and the lighthouse there..........one of the 7 wonders of the ancient world, is a lighthouse.....










On the 2nd floor of the nat. portrait gallery is a topographical map of dc.............from 1862..............a year into the civil war, by a Woolworth, and such and such a company of new York.................several things that stood out to me..........topographical is used for hills...............and land features...........not just a street map......this map included streets.......


For one, the legend of the map.............there were two places in DC that had the exact longitude and latitude............one was the national observatory.................which on the map was in green, and by the Potomac river..........more or less where the Kennedy center is now.............which was not built until like 1970 or so................and the other was the dome of the us capital...........not even the capital, but the dome specifically....................and longitude was measured from Greenwich, which the legend stated.....................in England..................the heading was astronomical measurements.........it only listed those two............and not navy, but national.......

Astronomical Applications - U.S. Naval Observatory

www.usno.navy.mil/USNO/astronomical-applications

• Similar

United States Navy

Loading...

Data Services - U.S. Naval Observatory - U.S. Navy

aa.usno.navy.mil/data/

• Similar

United States Navy

Loading...

Applications page with moon rise/moon set, lunar eclipse, and lunar positions and phase data.

United States Naval Observatory (USNO) | U.S. Government ...

bookstore.gpo.gov/.../927

• Cached
• Similar

United States Government Publishing Office

Loading...

This astronomical and timing data, essential for accurate navigation and the support of communications on Earth and in Space, is vital to the Navy and ...

---

Images for astronomical in navy navigationalReport imagesThank you for the feedback. Report another imagePlease report the offensive image. CancelDone

•