1. Johnson's new military map of the United States showing the forts, military posts & all the military divisions with enlarged plans of southern harbors; from authentic data obtained at the War Department, Washington; Johnson & Browning. Maps University Of Michigan Public content 1861. Dahl, James, former owner and Johnson & Browning. Relief shown by hachures. Prime meridians: Greenwich and Washington, D.C. Insets: New Orleans and delta of Mississippi, Louisiana -- Mobile Bay, Al...