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https://www.noaa.gov/media/digital-library-photo/pl23cgs06385jpgDescription
No. 26. Diagrams to illustrate Appendices Nos. 9 & 10. (Appendix 9 -On the Use of Railways for Geodetic Surveys. Appendix 10 -decription of a Reflector Used as a Signal in Triangulation.) Annual Report 1867. (Image credit: United States Coast Survey Annual Report 1867)
Credit
United States Coast Survey Annual Report 1867
Display Date
1867
Collection
Historic Coast & Geodetic Survey
Historic Maps
United States Coast Survey Annual Report
Keywords
Historical Cartography