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- United States. Forest Service71
- United States. Bureau of Public Roads48
- Pneu Michelin (Firm), cartographer46
- Rand McNally and Company36
- Pneu Michelin (Firm)33
- Geological Survey (U.S.)25
- H.M. Gousha Company24
- United States. Bureau of Indian Affairs. Phoenix Area Office. Branch of Roads22
- Mulford, John C., cartographer18
- Automobile Club of Southern California15
- United States. Office of Strategic Services. Research and Analysis Branch15
- Freytag, Berndt und Artaria14
- General Drafting Company13
- United States. Army Map Service12
- Nelles Verlag11
- GiziMap (Firm)10
- Institut géographique national (France)10
- Rand McNally and Company, cartographer, publisher9
- Minnesota Map Publishing Co.8
- Rand McNally and Company, cartographer8
