Date: [between 1878 and 1898]
Creator: Walker, Emery, Sir, 1851-1933
Description: Map shows major roads, canals, railroads, counties, cities, towns, township boundaries; railroads for the Pittsburgh and Philadelphia areas on insets. Relief shown by shading. Relief shown by shading. Scale [ca. 1:1,375,000].
Contributing Partner: University of Texas at Arlington Library