Soundings on this map come from the Dolphin. 1st bathymetric map ever printed. SR Franklin assisted in making many of the soundings on this map. The very earliest rendition of a bathymetric map of an oceanic basin. Matthew Fontaine Maury published this map in 1853 in Explanations and Sailing Directions to Accompany the Wind and Current Charts. This image was obtained through the courtesy of the United States Naval Observatory Gilliss Library. Image courtesy of NOAA Photo Library.
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