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Publisher
- Denison, J.1
- Dept. of City Planning (Pittsburgh, Pa)1
- Geological Survey (Washington, D.C.?)1
- J. Bien (New York)1
- Jacob Haehnlen [lithographer (Philadelphia, [Pennsylvania)1
- NJ Department of Enivronmental Protection1
- NJ Department of Environmental Protection1
- Ohio. Division of Geological Survey20
- Philadelphia Inquirer5
- Sanborn Map Company2,060
- Senex, John1
- The Commission (Harrisburg, Pa)1
- The Service (Fort Worth, Tex.)1
- The Service (Harrisburg, Pa.)4
- The Service (Harrisburg, Pa.?)1
- The Survey (Pennsylvania)1
- United States Geological Survey3
- Works Progress Administration of Pennsylvania1,141