Digital Library Search
![Observing three-point sextant fix while surveyingthe reservoir of the Grand Coulee Dam theb4319.jpg Observing three-point sextant fix while surveyingthe reservoir of the Grand Coulee Dam](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4319.jpg?itok=9927Wvf_)
Description
Observing three-point sextant fix while surveyingthe reservoir of the Grand Coulee Dam. (Image credit: Family of Captain David M. Whipp, C&GS;)
Credit
Family of Captain David M. Whipp, C&GS;
Display Date
1948
Location
Washington, Grand Coulee Dam, Columbia River
Collection
Historic Coast & Geodetic Survey