Author
National Society of the Colonial Dames of America
7
Armenian Assembly of America
5
National Slovak Society of the United States of America
5
American Association for State and Local History
4
Polish Genealogical Society of America
4
Polonus Philatelic Society
4
American Historical Association
3
Archaeological Institute of America
3
Center for Migration Studies (U.S.)
3
College of Physicians of Philadelphia
3
Polish American Council
3
Polish Falcons of America
3
Polish Institute of Arts and Sciences of America
3
Polish National Alliance of the United States of North America
3
Polish Tatra Mountaineers Alliance
3
Wyoming Historical and Geological Society
3
American Indian Community House (New York, N.Y.)
2
American Institute of Architects. Philadelphia Chapter
2
American Iron and Steel Association
2
American Latvian Association in the United States
2
American School of Classical Studies at Athens
2
Armenian General Benevolent Union
2
Armenian Students' Association of America New York Chapter
2
Barnes Foundation
2
CSA Fraternal Life (Society)
2
Central New York Genealogical Society
2
Congress of Americans of Ukrainian Descent
2
Czechoslovak American Center
2
Czechoslovak Society of America
2
Deutsche Gesellschaft von Chicago
2
Don Bosco Institute
2
Embree, Edwin R. 1883-1950
2
Federated Merchants' Organizations of America
2
Federated Russian American Youth
2
Federation of Genealogical Societies (U.S.)
2
Federation of Ukrainian Student Organizations of America
2
First Catholic Slovak Ladies Association (U.S.)
2
First Catholic Slovak Ladies Union
2
First Slovak Wreath of the Free Eagle
2
Foundation for Historic Restoration in the Pendleton Area
2
Gromada, Thaddeus V., 1929-
2
Groovers (Philadelphia, Pa.)
2
Historical Society of Northwestern Ohio
2
Ignacy Paderewski Club
2
Japanese Association of Philadelphia
2
Julius Rosenwald Fund
2
Kosciuszko Foundation
2
Kółka Literacko Dramatyczne
2
Lillehei, L.
2
Maumee Valley Historical Society
2
more ...