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  • Map
    Preliminary chart of the northwestern part of the Gulf of Mexico. Unfinished proof. Scale 1:600,000. LC Civil War Maps (2nd ed.), 17.8 At head of title: U.S. Coast Survey, A. D. Bache, Supdt. Chart of the Gulf coast from Pensacola Bay to the Rio Grande (Rio Bravo del Norte) showing soundings and bottom contours at 6, 12, and 18 feet. "Note: In portions of this chart where no soundings have yet been made by the Coast Survey,...
    • Contributor: United States Coast Survey
    • Date: 1861