pl23_theb1345.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23theb1345jpgDescription
Reproduction of first map showing magnetic declination in the United States.First published by the Coast Survey in 1856
Credit
C&GS; Centennial Anniversary Volume, NOAA Central Library
Display Date
1856
Category
Historic Coast & Geodetic Survey
Keywords
Geophysics
Geomagnetism