Other
- ADC (Firm) 15 results
- Baist, G. Wm. (George William), 1859-1927 11 results
- Hopkins, Griffith Morgan, Jr 9 results
- A.H. Mueller & Co 8 results
- Bromley, George Washington 8 results
- Bromley, Walter Scott 8 results
- G.M. Hopkins & Co 8 results
- Pennsylvania. Department of Conservation and Natural Resources 8 results
- Beers, F. W. (Frederick W.) 6 results
- Kiser, Ellis 6 results
- Mueller, A. H. 6 results
- Pennsylvania 6 results
- Smith, Elvino V., 1870-1932 6 results
- Alexandria Drafting Company 5 results
- Phlash (Firm : Philadelphia, Pa.) 5 results
- Geological Survey of Pennsylvania 4 results
- Lathrop, J. M. 4 results
- MacInnes, Sharon Cook 4 results
- Nichols, Beach 4 results
- Pennsylvania. Bureau of Topographic and Geologic Survey 4 results
- Smith, J. L. 4 results
- G.W. Bromley & Co 3 results
- Historical Society of Pennsylvania 3 results
- Marian S. Carson Collection (Library of Congress) 3 results
- Mural Arts Program (Philadelphia, Pa.) 3 results
- Ogier, St. Julian 3 results
- Pennsylvania. Department of Commerce 3 results
- Philadelphia & Reading Railroad Co 3 results
- Philadelphia (Pa.). Office of the Managing Director 3 results
- Philadelphia Transportation Company 3 results
- Scott, James D. 3 results
- Southeastern Pennsylvania Transportation Authority 3 results
- American Imprint Collection (Library of Congress) 2 results
- American Philosophical Society 2 results
- Beers, D. G. (Daniel G.) 2 results
- Beetem, Charles Gilbert 2 results
- Big Bus Company of Pennsylvania 2 results
- Bowen, John S. 2 results
- Busch, Edward 2 results
- Cate, Addison S. 2 results
- DeLorme Mapping Company 2 results
- Delaware and Schuylkill Canal Company 2 results
- Dodge, Clifford H. 2 results
- E.P. Noll & Co 2 results
- Everts & Stewart 2 results
- Fairmount Park Commission (Philadelphia, Pa.) 2 results
- Franklin Survey Co 2 results
- Gay, Edward F. 2 results
- George F. Cram Company 2 results
- Hamilton Library and Historical Association of Cumberland County, Carlisle, Pa 2 results more…