Author
Essex Institute
10
Historical Society of Delaware
10
Egle, William Henry, 1830-1901
8
Jacobus, Donald Lines, 1887-1970
7
American Historical Association
6
Archives of American Art
6
B'nai B'rith. Anti-defamation League
6
Pennsylvania State Library
6
Reformed Church in the United States
6
Swiss-American Historical Society
6
Union of American Hebrew Congregations
6
Virginia State Library
6
American Bibliographical Center
5
American Gymnastic Union
5
American Jewish Historical Society
5
Armenian Assembly of America
5
Balzekas Museum of Lithuanian Culture
5
Connecticut Historical Society
5
Historical Society of Pennsylvania
5
Kentucky Historical Society
5
Maryland Historical Society
5
New England Historic Genealogical Society
5
New Jersey Historical Society
5
Order of Ahepa
5
Penn Club (Philadelphia, Pa.)
5
Pennsylvania Inspectors of Mines
5
Society for German-American Studies (U.S.)
5
South Carolina Historical Society
5
American Jewish Congress
4
American Protestants for Truth about Ireland
4
American-Irish Historical Society
4
American-Scandinavian Foundation
4
Association for the Advancement of Baltic Studies
4
Catholic Record Society (Great Britain)
4
Connecticut Society of Genealogists
4
Eleutherian Mills-Hagley Foundation
4
Federation of Jewish Agencies of Greater Philadelphia
4
Gale Research Inc
4
Intergovernmental Committee for European Migration
4
Maryland Genealogical Society
4
Mississippi Valley Historical Association
4
Moravian Music Foundation
4
National Federation of Temple Brotherhoods
4
New Jersey Folklore Society
4
New York State Historical Association
4
North American Gymnastic Union. Normal College
4
Norwegian-American Historical Association
4
Organization of American Historians
4
Polish Genealogical Society of America
4
Polonus Philatelic Society
4
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