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United States Naval Observatory

Title: Naval Observatory
Abstract/medium: National Photo Company Collection (Library of Congress)
Physical description: 1 negative :
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The United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. Established in 1830 as the Depot of Charts and Instruments, it is one of the oldest scientific agencies in the United States, and remains the country's leading facility for astronomical and timing data. (From Wikipedia)

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Filed under: United States Naval Observatory -- Periodicals
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