Scale approximately 1:50,000 (W 75°30ʹ01ʺ--W 75°21ʹ52ʺ/N 41°07ʹ38ʺ--N 41°00ʹ01ʺ).
"XI-2." "Base map preparation by Wilbur Smith and Associates. Technical data compiled by Joseph S. Ward and Associates. Final presentation by Wilbur Smith and Associates." Several prominent elements on the map are mis-labeled, notably I-81, which is actually 380. Land use key on verso.