Philadelphia Inquirer article and photos showing recovery of 1839 earthenware crock survey marker first established by Ferdinand Hassler, founder of the Coast Survey. The article confuses the Geodetic Survey with the United States Geological Survey which wasn’t founded until 1878.
Photo Category: Coast and Geodetic Survey
Photo Location: Pennsylvania, Willow Grove
Photo Date: 1979
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| Added On | 16th October 2015 | 
| Viewed | 8 viewed |