Author
Pennsylvania Historical and Museum Commission
6
Egle, William Henry, 1830-1901
5
Pennsylvania Inspectors of Mines
5
Pennsylvania State Library
5
Historical Society of Pennsylvania
4
Historical Society of Western Pennsylvania
4
National Society of the Colonial Dames of America in the Commonwealth of Pennsylvania
4
Pennsylvania-German Society
4
German Society of Pennsylvania
3
Pennsylvania Council on the Arts
3
Pennsylvania. Department of Public Instruction
3
University of Pennsylvania
3
Women's Agenda (Organization)
3
American Civil Liberties Union of Pennsylvania
2
Communist Party of the United States of America (Eastern Pennsylvania) Research and Legislative Committee
2
Duquesne University. Tamburitzans Institute of Folk Arts
2
Geological Society of Pennsylvania
2
Natural Lands Trust
2
Pennsylvania Arts and Sciences Society
2
Pennsylvania Canal Society
2
Pennsylvania Council for the Social Studies
2
Pennsylvania Historical Association
2
Reformed Church in the United States
2
Sower, Christopher, 1721-1784
2
Western Pennsylvania Genealogical Society
2
Woman's Medical College of Pennsylvania
2
Abington (Montgomery County, Pa. : Township) Public Library
1
Anderson, Matthew, 1847-1913
1
Armenian Sisters Academy (Radnor, Pa.)
1
Armenian Sisters of the Immaculate Conception
1
B'nai B'rith Anti-defamation League Eastern Pa.-Del. Region
1
Bell Telephone Company of Pennsylvania
1
Berean Institute (Philadelphia, Pa.)
1
Catholic Church Archdiocese of Philadelphia Archdiocesan School Board
1
Catholic Church Diocese of Pittsburgh (Pa.)
1
Catholic Church. Diocese of Pittsburgh (Pa.)
1
Centre County (Pa.) Library
1
Cheyney University of Pennsylvania
1
Children's Aid Society of Pennsylvania
1
Citizens Crime Commission of Philadelphia
1
Clarke, Jane Adams
1
Clemson, Thomas Green, 1807-1888
1
Clifton Hall
1
Colonial Society of Pennsylvania
1
Congregation Shaarai Shomayim (Lancaster, Pa.)
1
Dahlinger, Charles William, 1858-
1
Delaware & Lehigh National Heritage Corridor Commission
1
Delaware and Lehigh Navigation Canal National Heritage Corridor Commission
1
Diamond State Telephone (Firm)
1
Dickinson School of Law
1
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