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- Geological Survey (U.S.)59
- Connecticut. State Highway Dept7
- H.M. Gousha Company4
- United States. Bureau of Public Roads4
- Raisz, Erwin, 1893-19683
- United States. Forest Service. North Pacific Region3
- C.S. Hammond & Company2
- H.M. Gousha Company, cartographer2
- Automobile Club of Southern California1
- Bateman, J. D.1
- C.S. Hammond & Company, cartographer1
- California State Automobile Association1
- Canada. Bureau of Geology and Topography, issuing body1
- Canada. Department of Mines and Resources. Surveys and Engineering Branch1
- Canada. Dept. of National Defence. Geographical Section1
- Canada. Office of the Surveyor General1
- Florida. Department of Agriculture1
- Geological Survey (U.S.), cartographer1
- Geological Survey (U.S.). Alaskan Branch1
- Gerhard, Peter1
