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https://www.noaa.gov/media/digital-library-photo/pl23ship3193jpgDescription
A first contoured map of the Astoria Canyon complex off the entrance to theColumbia River. In: Francis P. Shepard, Submarine Valleys.The Geographical Review, Volume XXIII, 1933, p. 86. (Image credit: Archival Photography by Steve Nicklas)
Photographer
Archival Photography by Steve Nicklas
Collection
Voyage to Inner Space
NOAA Affiliation
NOS