Letter from Carl Risvold to his sister-in-law during Salmon River Project, the River of No Return. Letter details communication and mail problems for remote geodetic work even in 1945.

Image ID: cgs00504, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Idaho, Riggins
Photo Date: 1945 September 4.
Credit: Collection of Mr. Floyd Risvold, USC&GS

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