- Philadelphia Athletics Historical Society Inc
6 North York Road, Hatboro, PA, 19040(215) 323-9901
- African American Historical Society
727 Cedar Street, Bristol, PA, 19007(215) 458-9011
- AAA-Architectural Design and Consultants
792-2 South Front Street, Philadelphia, PA, 19147(215) 567-3100
- Allegheny City Society
Pittsburgh, PA, 15233(412) 322-8807
- Sewickley Valley Historical Society
200 Broad St, Sewickley, PA, 15143(412) 741-5315
- Mahanoy Area Historical Society
1 West Centre Street, Mahanoy City, PA, 17948(570) 773-1295
- RetroSpecs
Birdsboro, PA, 19508(610) 404-2985
- Archdiocese Of Philadelphia - Philadelphia Archdiocesan Historical Research Cent
Bala Cynwyd, PA, 19004(610) 667-2125
- Conshohocken Historical Society
120 East 5th Avenue, Conshohocken, PA, 19428(610) 828-7869
- Cj Daley Historical Reproduction Co
242 Baltimore Street, Gettysburg, PA, 17325(717) 334-4429
- Our Lives and Times
826 Carl Avenue, New Kensington, PA, 15068(724) 337-7500
- Connellsville Area Historical Society
Carnegie Librry Boulevard, Connellsville, PA, 15425(724) 628-5640
- E O Austin Home Historical Society
1 Townsquare, Austin, PA, 16720(814) 647-8358
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- Bucks County Civil War Roundtable
32 North Broad Street, Doylestown, PA, 18901(215) 348-4870
- Milford Township Historical Preservation Society
1580 Sleepy Hollow Road, Quakertown, PA, 18951(215) 538-8101
- Bridesburg Historical Society
2801 Brill Street, Philadelphia, PA, 19137(215) 744-1674
- Homestead & Mifflin Twnshp Historical Society
510 East 10th Avenue, Homestead, PA, 15120(412) 461-7767
- Brrs
Pittsburgh, PA, 15214(412) 931-2394
- Delaware County Historical Society Library
Malin, Broomall, PA, 19008(610) 359-1148
- National Episcopal Historians and Archivists
509 Yale Avenue, Swarthmore, PA, 19081(610) 544-1886
- Philadelphia Archdiocesan Historical Resarch Center
100 East Wynnewood Road, Wynnewood, PA, 19096(610) 667-2125
- Mc Kissick Associates
317 North Front Street, Harrisburg, PA, 17101(717) 238-6810
- Historical Society Of East Pennsboro
410 Cherry Street, Enola, PA, 17025(717) 732-5801
- Latrobe Historical Society
1501 Ligonier Street, Latrobe, PA, 15650(724) 539-8889
- Baltzer Meyer Historical Society
Road 11 Box 211, Greensburg, PA, 15601(724) 836-6915
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