Yolo Buggy used to transport and shade base measuring instruments.
Yolo Base Line, one of the most accurate measured in the Nineteenth Century.
Base Line party of George Davidson
Image ID: theb1649, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Sacramento Valley, California
Photo Date: 1881
Credit: NOAA National Geodetic Survey
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
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April 30, 2013