Sketch showing the positions of the beacons on the Florida reefs
Scale 1:400,000. LC Civil War Maps (2nd ed.), 117.6 (Its no. 464) At head of title: U.S. Coast Survey, A. D. Bache, Supdt. "No. 464 price 15 cents" is printed in the upper margin. Inset: Plan of beacons devised by Lieut. James Totten, U.S. Army, Assistant, U.S.C.S. 29 x 16 cm. Description derived from published bibliography. Available also through the Library of Congress web...
United States Coast Survey - Bache, A. D. (Alexander Dallas)