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- Sanborn Map Company15
- City of Philadelphia7
- City Planning Commission (PCPC) Department - GIS Division5
- Philadelphia City Planning Commission5
- Karen Kwasnowski3
- United States Geological Survey3
- City of Philadelphia - PWD2
- City of Philadelphia Water Department - Information Systems Technology2
- PA City of Philadelphia2
- Southeastern Pennsylvania Transportation Authority2
- Water Department - Information Systems & Technology2
- City of Philadelphia - Department of Records1
- City of Philadelphia - Fire Department1
- City of Philadelphia - Office of Emergency Management1
- City of Philadelphia University of Vermont Spatial Analysis Laboratory1
- Department of Records1
- Fairmount Park Commission (Philadelphia, Pa.)1
- Heritage Conservancy1
- Jennifer M Brennan1
- Kimbriell Kelly1