Author
Free Europe Committee
2
KC PZPR
2
United Polish Societies of Los Angeles
2
National Committee for a Free Europe (U.S.). Research and Information Center. Polish Section
1
National Committee for a Free Europe (U.S.). Research and Publications Service. Polish Section
1
Piłsudski Institute of America
1
Polish Government Information Center (New York, N.Y.)
1
Polish Information Center (New York, N.Y.)
1
Polish Institute of Arts and Sciences in America
1
Polska Partia Robotnicza KC
1
Polska Partia Robotnicza. KC
1