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  2. United States Naval Research Laboratory - Wikipedia

    en.wikipedia.org/wiki/United_States_Naval...

    The first modern U.S. radar was invented and developed at NRL in Washington, DC in 1922. By 1939, NRL installed the first operational radar aboard the USS New York, in time for radar to contribute to naval victories of the Coral Sea, Midway and Guadalcanal. NRL then further developed over-the-horizon radar as well as radar data displays. [4]

  3. Streets and highways of Washington, D.C. - Wikipedia

    en.wikipedia.org/wiki/Streets_and_highways_of...

    Facsimile of manuscript of Peter Charles L'Enfant's 1791 plan for the federal capital city (United States Coast and Geodetic Survey, 1887). [2] L'Enfant's plan for Washington, D.C., as revised by Andrew Ellicott in 1792 Thackara & Vallance's 1792 print of Ellicott's "Plan of the City of Washington in the Territory of Columbia", showing street names, lot numbers, depths of the Potoma River and ...

  4. Navy Annex - Wikipedia

    en.wikipedia.org/wiki/Navy_Annex

    However, in December 2016, the National Defense Authorization Act for Fiscal Year 2017 (Public Law 114-328) authorized the Secretary of the Army to expand the Cemetery by acquiring from Arlington County and the Commonwealth of Virginia by condemnation and other means properties near the Cemetery that contain the Southgate Road, South Joyce ...

  5. Main Interior Building - Wikipedia

    en.wikipedia.org/wiki/Main_Interior_Building

    Located in the Foggy Bottom neighborhood, it is bounded by 19th Street NW on the west, 18th Street NW on the east, E Street NW on the north, C Street NW on the south, and Virginia Avenue on the southwest. Although the building takes up the entire block, the address is "1849 C Street, NW" to commemorate the founding of the Department of Interior ...

  6. Quadrants of Washington, D.C. - Wikipedia

    en.wikipedia.org/wiki/Quadrants_of_Washington,_D.C.

    The Northwest quadrant is the largest, located north of the Mall and west of North Capitol Street. Washington, D.C., is administratively divided into four geographical quadrants of unequal size, each delineated by their ordinal directions from the medallion located in the Crypt under the Rotunda of the Capitol. Street and number addressing ...

  7. Henry Daly Building - Wikipedia

    en.wikipedia.org/wiki/Henry_Daly_Building

    C Street looking northeast The Henry J. Daly Building (previously known as the Municipal Center and also referred to as 300 Indiana and the Daly Building) is located at 300 Indiana Avenue, NW, and 301 C Street, NW, in the Judiciary Square neighborhood of Washington, D.C. , United States.