Author
Historical Society of Pennsylvania
32
Sons of the Revolution. Pennsylvania Society
15
Philadelphia County Medical Society
12
Cannstatter Volksfest-Verein (Philadelphia, Pa.)
8
German Society of Pennsylvania
7
Pennsylvania Historical and Museum Commission
7
Berks County Medical Society (Pa.)
6
Medical Society of the State of Pennsylvania
6
National Society of the Colonial Dames of America in the Commonwealth of Pennsylvania
6
Pennsylvania Horticultural Society (Philadelphia)
6
Pennsylvania Association of Dental Surgeons
5
Pennsylvania Federation of Historical Societies
5
College of Physicians of Philadelphia
4
De Schweinitz, G. E. 1858-1938
4
Monroe County Historical Society (Pa.)
4
Pennsylvania German Folklore Society
4
Pennsylvania Tuberculosis Society
4
Pennsylvania-German Society
4
Philadelphia Record
4
Sons of the American Revolution. Pennsylvania Society
4
Sons of the Revolution Pennsylvania Spciety
4
Welcome Society of Pennsylvania
4
Friendly Sons of St. Patrick
3
Grand Army of the Republic. Department of Pennsylvania
3
Kent, Donald H.
3
Pennsylvania Federation of Museums and Historical Organizations
3
Ramey, Brian
3
St. Andrew's Society of Philadelphia
3
American Catholic Historical Society of Philadelphia
2
American Hungarian Federation
2
American Latvian Association in the United States
2
Art Club of Philadelphia
2
Asociación de Comercianates hispanos
2
Benevolent Mutual Society "Roma e Provincia" (Philadelphia, Pa.)
2
Bilyk, Oleksander,
2
Carey, Mathew, 1760-1839
2
Central Medical Society of Pennsylvania
2
Citizens' Law and Order League of Pennsylvania
2
Communist Party of the United States of America (Eastern Pennsylvania) Research and Legislative Committee
2
Council of Spanish Speaking Organizations
2
Crawford County Historical Society (Meadville, Pa.)
2
De Witt, William R. 1792-1867
2
Delaware County Institute of Science (Media, Pa.)
2
Deutsch-Ungarischer Zipser Kranken-Unterstützungs-Verein. (Philadelphia, Pa.)
2
Deutschen Katholischen Staats-Verbandes von Pennsylvanien
2
Deutsches Evangelisch-Lutherisches Ministerium von Pennsylvanien und der Benachbarten Staaten
2
Dickinson College. Belles Lettres Society
2
Dim ukraïns'koï molodi
2
Donegal Society (Philadelphia, Pa.)
2
Duquesne University
2
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