Extent of 1st and 2nd order level net as of July 1, 1936. W.P.A. computation party of Ralph Pfau
Image ID: theb1821, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: United States Photo Date: 1938 Credit: C&GS Season's Report Pfau 1938-3 Category: Geodesy/Leveling/ • High Resolution Photo Available
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