Scale approximately 1:633,600. 1 in. = approximately 10 miles (W 80°46ʹ00ʺ--W 74°41ʹ00ʺ/N 42°17ʹ00ʺ--N 39°37ʹ00ʺ).
Note
Relief shown by hachures and spot heights. "Copyright 1942, General Drafting Co., Inc."--Above mileage table. Includes index. Mileage table; text; index of public recreation areas; color illustration; advertisement; list of radio stations; 11 local route maps; and ancillary maps of Philadelphia and vicinity, Pittsburgh and vicinity, and "Pictorial guide to happy motoring in Pennsylvania" on verso. "142"--Lower right corner.