Illus. in: Harper's weekly, 1862 May 17, pp. 312-313. Public domain photograph of a navy ship, free to use, no copyright restrictions image - Picryl description
Print shows a large squadron of battleships and ironclads entering the Mississippi River near the "Light-house of Southwest Pass"; some are identified as the "Colorado, 40 Guns", "Pensacola on the Bar", "Westfi More