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Creator
- American Geographical Society of New York1
- Geological Survey (U.S.)8
- H.M. Gousha Company.1
- Highway Planning Survey (Mich.)1
- Iowa City (Iowa). City Engineer's Office.1
- Iowa. Department of Transportation.9
- John Fraser Hart, cartographer.1
- Mapping Prejudice Project2
- Michigan1
- Mills, Marguerite2
- Minneapolis (Minn.). Department of City Assessor1
- Nowack, W.K.2
- Public Roads Administration1
- Rand McNally and Company.1
- Rutgers University2
- State Highway Department1
- United States1
- United States. Public Roads Administration1
- United States. Public Roads Administration.1
- United States. Work Projects Administration (Minn.)1