- Wall, J. Sutton
- Digital Commonwealth
- Boston Public Library
- Department of Internal Affairs of Pennsylvania
Shows counties, railroads, watershed, cities, towns, post offices, tunnels, and notable physical features. Drawn and compiled by J. Sutton Wall, chief draughtsman.
- No known copyright restrictions. This work is licensed for use under a Creative Commons Attribution Non-Commercial Share Alike License (CC BY-NC-SA).