pl23_cgs01992.jpg
![Freshly set Coast Survey horizontal control mark used in hydrographic surveyoperations cgs01992.jpg Freshly set Coast Survey horizontal control mark used in hydrographic surveyoperations](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_cgs01992.jpg)
Description
Freshly set Coast Survey horizontal control mark used in hydrographic surveyoperations.
Collection
Historic Coast & Geodetic Survey
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