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    Re: Historical charts and mapping
    From: Robert Wyatt
    Date: 2016 Aug 18, 09:57 -0500
    1830.
    http://www.usno.navy.mil/USNO/about-us/brief-history
    --Robert

    Bruce Cutting wrote:

    Naval observatory?  When did it come into being and did they attempt to provide a time standard ?


       
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