Relief shown by hachures. Prime meridians: Greenwich and Washington, D.C. Insets: New Orleans and delta of Mississippi, Louisiana -- Mobile Bay, Alabama -- Entrance to Pensacola Bay, Florida -- Key West, Florida -- Savannah River -- Charleston Harbor, S. Carolina -- Hampton Roads and Norfolk Harbor, Virginia -- Washington and vicinity -- Baltimore and vicinity. Possibly from Johnson's New Illustrated (Steel Plate) Family Atlas, With Physical Geography, And With Descriptions Geographical, Statistical, And Historical. "Entered according to Act of Congress in the year one thousand eight hundred & sixty one by Johnson & Browning in the Clerk's office of the District Court of the United States for the southern Distrct of New York." 1 map: hand col.; 31 x 49 cm., on sheet 46 x 66 cm.