pl23_theb1814.jpg
Description
Leveling along the Loon River.Level party of J. D. Thurmond
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