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https://www.noaa.gov/media/digital-library-photo/pl23theb4313jpg-0Description
George Hastings observing levels; Smitty Smith holding umbrella; and BillUnger (?) gun-toter. The umbrella was used to keep the sun off the level bubble on the leveling instrument as that would draw the instrument out of level andmake erroneous readings. (Image credit: Mr. Benton Hickok)
Photographer
Mr. Benton Hickok
Display Date
1934 November
Location
Alabama, Guntersville
Collection
Historic Coast & Geodetic Survey