pl23_theb1767.jpg
Description
Working along the Southern Pacific Railroad.Rodman at benchmark.Observing crew even with engine on right.Velocipede removed from tracks.Level party of C. A. Egner
Credit
C&GS; Season's Report Egner 1920
Display Date
California
Location
California
Category
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent