Engraving soundings on a copper plate with a machine.
In: Putnam, G.R. 1908. Nautical Charts. J. Wiley and Sons, New York.
Image ID: theb4086, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
| NOAA Disclaimer
July 7, 2015