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pl23_cgs06438.jpg

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https://www.noaa.gov/media/digital-library-photo/pl23cgs06438jpg

Description

No. 23 Local Deflections of the Zenith at some stations near Washington City toillustrate Appendix No. 7 Coast Survey Report of 1869. Annual Report 1869.

Collection

Historic Coast & Geodetic Survey

Historic Maps

United States Coast Survey Annual Report