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pl23_cgs00787.jpg

Oscar Risvold conducting reconnaissance for triangulation work in western states

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23cgs00787jpg

Description

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.

NOAA Affiliation

USC&GS;