books.google.co.jp - The brilliance of both sides' secretaries of the navy, Stephen Mallory and Gideon Welles. The Dahlgren guns of the Union forces and the Confederate Navy's Brooke guns that were essential in battles involving ironclad ships. The significant contributions of African Americans in the ship crews of the U.S....http://books.google.co.jp/books/about/The_Civil_War_Naval_Encyclopedia.html?hl=ja&id=Ho_8ONL5UgsC&utm_source=gb-gplus-shareThe Civil War Naval Encyclopedia
