1863 Gulf of Mexico and US Coast

Gulf coast of the United States; Key West to Rio Grande. [Washington, U.S. Coast Survey], 1863. Scale 1:1,200,000. At head of title: U.S. Coast Survey, A. D. Bache, Supt. "Electrotype copy no. 1 by G. Mathiot, U.S.G.S., no. 5" printed in upper margin. Chart of the Gulf coast indicating soundings, lights, and bottom contours at 10 and 100 fathoms.