Jasper S. Bilby observing from reconnaissance pole attached to tree.
Top of pole is 104 feet above ground.
Checking for intervisibility between stations.
Helping plan for necessary height of tower at station
Image ID: theb2473, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Photo Date: 1903
Credit: NOAA, John Hayford Album
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of the U.S. Department of Commerce, National Oceanic & Atmospheric
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April 30, 2013