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In this photo, taken in August 1905, we see a USGS topographic leveling party, headed by R.A. Farmer on the slopes of Mount Whitney, California
UMG22A33_045

In this photo, taken in August 1905, we see a USGS...

Hydrologic Engineer Loaded with Field Equipment ca. 1920
UMG22A30_045

Hydrologic Engineer Loaded with Field Equipment ca...