pl23_map00245.jpg
![SW corner of San Francisco to Pt map00245.jpg SW corner of San Francisco to Pt](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_map00245.jpg)
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https://www.noaa.gov/media/digital-library-photo/pl23map00245jpgDescription
SW corner of San Francisco to Pt. Descanso Bathymetric Chart. This was thevery first bathymetric map produced solely from acoustic soundings.
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Voyage to Inner Space