Author
United States. Office of Indian Affairs
12
Ceļinieks
9
Matica slovenská
9
American Association of University Women Philadelphia Branch
8
American Latvian Association in the United States
8
Committee for a Free Lithuania
8
Free Europe Committee
8
Archives of American Art
7
Armenian General Benevolent Union
7
Ukrainian Workingmen's Association (U.S.)
7
Vyriausias Lietuvos išlaisvinimo komitetas
7
American Antiquarian Society
6
American Historical Association
6
Archaeological Institute of America
6
Augustan Society
6
Comisión para la Defensa de los Derechos Humanos en Centroamérica
6
Committee for a Free Latvia
6
Family Genealogical Exchange
6
Friends of Independence National Historical Park
6
Harry Houdini Collection (Library of Congress)
6
Lusaka Mission Service
6
National Slovak Society of the United States of America
6
New England Historic Genealogical Society
6
Pennsylvania Railroad
6
Philadelphia Convention & Visitors Bureau
6
Presbyterian Historical Society
6
Synod for the Norwegian Evangelical Lutheran Church in America
6
United Norwegian Lutheran Church of America
6
Vermont Historical Society
6
American Anti-Slavery Society
5
American Jewish Congress
5
American Jewish Historical Society
5
Armenian Assembly of America
5
Balch Institute for Ethnic Studies
5
Center for Migration Studies (U.S.)
5
Cincinnati Historical Society
5
ELTA
5
Historical Society of Western Pennsylvania
5
Indiana Historical Society
5
Institut für Auslandsbeziehungen
5
Lithuanian National Foundation (U.S.)
5
National Council on Public History (U.S.)
5
National Trust for Historic Preservation in the United States
5
University of Pennsylvania. Botanical Laboratory
5
Viereck, George Sylvester, 1884-1962
5
Women's University Club (Philadelphia, Pa.)
5
American Association for State and Local History
4
Armenian Church Diocese of the Armenian Church of America
4
Association of Writers from Poland
4
Centro de Investigación y Acción Social (San Salvador, El Salvador)
4
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