pl23_cgs00786.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23cgs00786jpgDescription
Oscar Risvold conducting reconnaissance for triangulation work in western states.
Credit
Courtesy of Mr. Floyd Risvold, USC&GS;
Photographer
Mr. Carl Risvold
Display Date
1920 ca.
Category
Historic Coast & Geodetic Survey
NOAA Affiliation
USC&GS;