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  2. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  3. Area codes 202 and 771 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_202_and_771

    If a 1-202-574 number was in use in the District, the corresponding 1-703-574 number or 1-301-574 number could only be assigned to jurisdictions a safe distance from the metropolitan area, such as southwestern Virginia or the Eastern Shore of Maryland. Conversely, if a 1-703-552 number was in use in Northern Virginia or a 1-301-552 Maryland ...

  4. List of U.S. state and territory abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._state_and...

    Modern two-letter abbreviated codes for the states and territories originated in October 1963, with the issuance of Publication 59: Abbreviations for Use with ZIP Code, three months after the Post Office introduced ZIP codes in July 1963.

  5. General Post Office (Washington, D.C.) - Wikipedia

    en.wikipedia.org/wiki/General_Post_Office...

    The General Post Office, also known as the Tariff Commission Building, is a historic building at 700 F Street NW in Washington, D.C., United States. Built in 1839 to a design by Robert Mills and enlarged in 1866 to a design by Thomas U. Walter , it is an example of Greek Revival architecture.

  6. United States Postal Service - Wikipedia

    en.wikipedia.org/wiki/United_States_Postal_Service

    The full eagle logo, used in various versions from 1970 to 1993. The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas and associated states.

  7. Old Post Office (Washington, D.C.) - Wikipedia

    en.wikipedia.org/wiki/Old_Post_Office...

    The Old Post Office, listed on the National Register of Historic Places as the Old Post Office and Clock Tower, is located at 1100 Pennsylvania Avenue, N.W. in Washington, D.C. It is a contributing property to the Pennsylvania Avenue National Historic Site. [1] It is adjacent to the Federal Triangle station on the Washington Metro.

  8. Sectional center facility - Wikipedia

    en.wikipedia.org/wiki/Sectional_center_facility

    Washington (200) (Street and PO box addresses), 900 Brentwood Rd. NE, Washington DC 20066-9998 Washington Government Mails Annex (202-205) (for mail destined to government buildings), 3300 V St NE, Washington DC 20018-1528 [ 5 ]

  9. Washington, D.C. - Wikipedia

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

    Washington, D.C., is a prominent center for national and international media. The Washington Post, founded in 1877, is the city's most-read local daily newspaper [citation needed] and one of the preeminent newspapers in the United States. [308] It had the sixth-highest readership of all news dailies in the country in 2011. [309]