Gulf of Mexico bathymetric map ca

Gulf of Mexico bathymetric map ca. 1888. All deep soundings are from work of the Coast and Geodetic Survey Steamer BLAKE. This map is one of the first to have relatively high density sounding information. The Coast Survey had taken thousands of soundings which were culled down to produce this map. This map is reproduced in Alexander Agassiz’s “Three Cruises of the BLAKE.”