pl23_cgs01677.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23cgs01677jpgDescription
J. R. Crichton observing with side-mounted level instrument from railroadvelocipede.
Credit
Mary Wood, Daughter of Harry Siple
Photographer
Harry Siple
Location
California, Southern
Category
Historic Coast & Geodetic Survey
NOAA Affiliation
USC&GS;