Shows counties, railroads, cities, and towns.; "Entered according to Act of Congress in the Year 1870 by S. Augustus Mitchell Jr. in the Clerk's Office of the District Court of the Eastern District of Pennsylvania."; Prime meridians: Greenwich and Washington.; Relief shown by hachures.; In lower right margin: 33.
S. Augustus Mitchell (publisher)
Mitchell, S. Augustus, Jr. (Samuel Augustus) (creator)
Mitchell, S. Augustus (Samuel Augustus), 1792-1868. (contributor)
1870