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![Observing in the Boundary Waters area of Minnesota theb1813.jpg Observing in the Boundary Waters area of Minnesota](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1813.jpg?itok=HHi0p6-Y)
Description
Observing in the Boundary Waters area of Minnesota.Level party of J. D. Thurmond (Image credit: C&GS; Season's Report Thurmond 1935-217)
Credit
C&GS; Season's Report Thurmond 1935-217
Display Date
1935
Location
Northeast Minnesota
Collection
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent
Keywords
Geodesy
Leveling