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- United States. Forest Service19
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- United States. Forest Service. Rocky Mountain Region5
- United States. Forest Service. Northern Region3
- Canadian Hydrographic Service2
- United States. Forest Service. Southern Region2
- United States. Soil Conservation Service2
- Burrus, R. F.1
- Southern Forest Experiment Station (New Orleans, La.)1
- United States. Army Map Service1
- United States. Forest Service. Alaska Region1
- United States. Forest Service. California Region1
- United States. Forest Service. Eastern Region1
- United States. War Department. Corps of Engineers1
