Author
- American Relief for Poland 5 results
- Carey, Mathew, 1760-1839 5 results
- Polish American Congress 5 results
- Polish Genealogical Society of America 5 results
- Polish Information Center (New York, N.Y.) 5 results
- Polonus Philatelic Society 4 results
- Rada Polonii Amerykańskiej 4 results
- Chociszewski, Józef, 1837-1914 3 results
- Coleman, Marion Moore, 1900- 3 results
- Free Europe Committee 3 results
- Gromada, Thaddeus V., 1929- 3 results
- Haiman, Mieczysław, 1888-1949 3 results
- Halecki, Oskar, 1891-1973 3 results
- Kosciuszko Foundation 3 results
- National Committee for a Free Europe (U.S.). Research and Information Center. Polish Section 3 results
- National Committee for a Free Europe (U.S.). Research and Publications Service. Polish Section 3 results
- Papiernik, Don, 1937- 3 results
- Polish American Council 3 results
- Polish YMCA 3 results
- Sienkiewicz, Henryk, 1846-1916 3 results
- Alliance College 2 results
- Association of Writers from Poland 2 results
- Beider, Alexander 2 results
- Biddle, Anthony J. Drexel, 1896-1961 2 results
- Burstin, Barbara Stern 2 results
- Bykovsʹkyĭ, Lev, 1895-1992 2 results
- Chojnacki, Wojciech 2 results
- Chorzempa, Rosemary A., 1951- 2 results
- Commission for Polish Relief 2 results
- Cyran, Frederic B. 2 results
- Filipowicz, Tytus, 1873- 2 results
- Frančić, Mirosław 2 results
- Gebert, B. 2 results
- Hoskins, Janina W. 2 results
- Instytut Historyczny imienia Generała Sikorskiego 2 results
- Jewish Museum (New York, N.Y.) 2 results
- Kersten, Charles J. 2 results
- Knysh, Zynoviĭ 2 results
- Kościuszko, Tadeusz, 1746-1817 2 results
- Krzesiński, Andrzej J., 1884-1964 2 results
- Kubiĭovych, Volodymyr, 1900-1985 2 results
- Kusielewicz, Eugene 2 results
- Louvet de Couvray, Jean-Baptiste, 1760-1797 2 results
- Matuszewski, Ignacy, 1891-1946 2 results
- Obal, Thaddeus J. 2 results
- Osinski, Henry J. 2 results
- Papiernik, Theresa, 1980- 2 results
- Pilch, Andrzej 2 results
- Polish American Museum Foundation 2 results
- Polish Genealogical Society 2 results more…