Prime meridian: Washington.; Steamboat routes with mileage on left side of map.; In upper right margin: 22.; Includes legend.; "Entered according to Act of Congress in ... 1850 ... in ... Eastern District of Pennsylvania."; Decorative border.; Choctaw County, established in 1847, is shown; Hancock County, created 1850, is not.
Thomas, Cowperthwait & Co (publisher)
Thomas, Cowperthwait & Co. (creator)
Mitchell, S. Augustus (Samuel Augustus), 1792-1868. (contributor)
1850