Author
Polish Roman Catholic Union of America
6
Association of Writers from Poland
2
Association of the Sons of Poland
2
Glos Ludowy Association
2
Gwiazda and Polish Star Publishing Company
2
Polish American Labor Council
2
Polish Falcons Alliance of America
2
Polish National Alliance of the United States of North America
2
Polish National Catholic Church of America
2
Polish Socialist Alliance
2
Polish Workmen's Aid Fund
2
Polsko Narodowa Spójnia w Ameryce
2
Sokolowski, Stefan
2
Dende, Henry 1918-
1
Fontes, Manuel da Costa
1
Kowalik, Jan
1
Multicultural History Society of Ontario
1
Nowaczyk family
1
Polish National Catholic Church of America General Synod
1
Polish National Catholic Church of America. General Synod
1
Polish Union in the USA
1
Polish Union of U.S.A
1
Polish-American Journal
1
Teutsch, Maria
1
University of Minnesota. Immigration History Research Center
1
Wepsiec, Jan, 1909-
1
Zgoda
1