Publisher
- State Highway Commission of Indiana63
- USDA-SCS (Fort Worth, Tex.)62
- Wallace, McHarg, Roberts and Todd59
- Indiana Department of Geology and Natural Resources57
- U.S. Geological Survey (Washington, D.C)55
- Dept. of Agriculture, Soil Conservation Service (Washington.)54
- Franklin Survey Co.54
- William B. Burford49
- NJ Department of Environmental Protection48
- United States. Soil Conservation Service43
- Huebinger Survey and Map Publishing Co.40
- publisher not identified40
- Kenyon Company39
- The Bureau36
- The Service (Washington, D.C.?)34
- Warner & Foote34
- The Survey (Washington, D.C)33
- (London)28
- Dept. of Agriculture, Soil Conservation Service (Fort Collins, Colo.)27
- NJ Department of Enivronmental Protection25