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Creator
- Sanborn Map Company2,060
- United States. Works Progress Administration of Pennsylvania.1,141
- Owen, Andrew23
- Murphy, Brendan20
- Struble, Richard A.20
- United States. Soil Conservation Service7
- Levinson, David M6
- Lukens, John, 1720-17894
- Fairman, Thomas3
- Irvine, William, 1741-18043
- People's Publishing Company.2
- Sheafer, P. W. (Peter Wenrick), 1819-2
- American Central Railway Company.1
- Beers, D. G. (Daniel G.)1
- Big Ten Academic Alliance Geospatial Information Network1
- Brown, Amos P. (Amos Peaslee), 1864-19171
- Ellicott, Andrew, 1754-18201
- Elverson, J. S.1
- Fairmount Park Commission (Philadelphia, Pa.)1
- Fenner, Sears & Co.1