Looking down on a brass plug marking the center of the Jefferson Pier. The
grooves cut in the top of the stone monument run E/W and N/S.
Image ID: geod0510, NOAA's Geodesy Collection
Location: Washington, D. C.
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
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May 12, 2014