Other
- American Bibliographical Center 9 results
- American Anti-Slavery Society 8 results
- National Slovak Society of the United States of America 8 results
- National Society of the Colonial Dames of America 7 results
- Ukrainian Workingmen's Association (U.S.) 7 results
- American Antiquarian Society 6 results
- American Jewish Historical Society 6 results
- American Association for State and Local History 5 results
- Armenian Assembly of America 5 results
- Daughters of the American Revolution 5 results
- National Council on Public History (U.S.) 5 results
- National Trust for Historic Preservation in the United States 5 results
- Pennsylvania Railroad 5 results
- American Historical Association 4 results
- American Jewish Congress 4 results
- American Latvian Association in the United States 4 results
- Augustan Society 4 results
- Balch Institute for Ethnic Studies 4 results
- Federation of Genealogical Societies (U.S.) 4 results
- Hebrew Union College 4 results
- Polish American Council 4 results
- Polish Genealogical Society of America 4 results
- Polonus Philatelic Society 4 results
- Victorian Society in America 4 results
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- Armenian Church. Diocese of the Armenian Church of America 3 results
- Association for Documentary Editing 3 results
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- Figas, Justyn, 1886-1959 3 results
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- National Genealogical Society 3 results
- National Society of the Colonial Dames of America in the Commonwealth of Pennsylvania 3 results
- Norwegian Lutheran Church of America 3 results
- Polish Falcons of America 3 results
- Polish National Alliance of the United States of North America 3 results
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- American Colonization Society 2 results
- American Council for Judaism 2 results
- American Heritage Society 2 results
- American Latvian Association in the United States. Congress 2 results
- American Relief for Poland 2 results
- American and Foreign Anti-Slavery Society 2 results
- Armenian General Benevolent Union 2 results more…