The federal aid highway system progress map: [Indiana]
- Description:
- Base map from U.S. Geological Survey state map.; Data corrected to May 1, 1940. Scale 1:500,000. 1 inch = 1.789 miles; Modified polyconic projection
- Collection:
- Indiana Historic Maps
- Place(s):
- Indiana, United States
- Subject(s):
- Road maps, Roads, and Transportation
- Year:
- 1940
- Held by:
- Indiana
- More details at
- http://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00588