Author
National Carl Schurz Association
3
Carl Schurz Memorial Foundation
2
German Genealogical Society of America
2
Committee for the Affairs of Polish Western Territories
1
German Library of Information
1
German Library of Information (New York, N.Y.)
1
Leo Baeck Institute
1
Mid-Atlantic Germanic Society
1
Oberlaender Trust
1
Polish American Congress California-Arizona Division
1
Studies Centre on Polish-German Affairs
1