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Author
- Pennsylvania. Bureau of Topographic and Geologic Survey.11
- Platts9
- Regional Planning Federation of the Philadelphia Tri-State District, compiler, cartographer, issuing body.5
- United States Coast Survey.3
- Fox, David A. (David Alan)2
- Lytle, William S.2
- Marshall Penn-York Co.2
- Rickard, Lawrence V.2
- Sevon, William D.2
- ADC (Firm)1
- Allegheny County (Pa.). Planning Department, compiler, cartographer, issuing body.1
- Barney, W. Pope (William Pope), 1890-1970, architect, cartographer.1
- Berg, Thomas M.1
- Capital Area Transit, compiler, cartographer, issuing body.1
- Cate, Addison S.1
- Colton, George Willis, 1920-1
- Craft, Jesse L.1
- E.P. Noll & Co.1
- Franklin Maps (Firm)1
- Geological Survey (U.S.)1