Depths shown by gradient tints. Shows location of sunken ships. Printed in upper left margin: 39th Cong. 1st Sess. --- Annual Report of the Secretary of the Navy. LC Civil War maps (2nd ed.) 370.1 Available also through the Library of Congress Web site as a raster image.
Willenbücher, Eugene - Boutelle, C. O. (charles Otis) - Krebs, Charles G.
"Bowen & Co. lith. Philada." "The survey of the channels, fortifications etc. was made after the occupation of the Harbor by the U.S. Naval forces." Depths shown by gradient tints. From: Message of the President of the United States, and accompanying documents to the two houses of Congress, at the commencement of the first session of the thirty-ninth Congress. Report of the Secretary of ...
Willenbacher, Eugene - Boutelle, C. O. (charles Otis) - Krebs, Charles G. - Bowen & Co.