The collection contains correspondence, documents, reports, and news clippings about the activities of the Assembly of Captive European Nations, European Federalist Projects and Defense of Human Rights in Central Europe (1945-1971). The Archive of Central and Eastern European Planning Board includes documents and reports of the Board, news clippings about the European Federalist Project involving Czechoslovakia, Greece, Yugoslavia, and Poland, and photocopies of classified documents of the Czech-Polish Confederation, 1942-1943. Publications on European integration include the periodical NEW EUROPE. Materials regarding the activities of the Pan-European movement, publications (1926-1938) and PAN-EUROPA Conference in New York (1943). Original documents related to the Polish Socialist Party (PPS) include correspondence with socialist leaders, pamphlets and the socialist press ROBOTNIK, ROBOTNIK POLSKI, SWIATLO. Private correspondence of Feliks Gross with Radio Free Europe and US universities. Publications and manuscripts by Feliks Gross on political and sociological issues. Correspondence of Feliks Gross with other universities and colleges in the USA and abroad from the Institute of International Studies of University of Wyoming and Sociological Studies in Brooklyn College in New York City. Outlines of classes, bibliographies and lectures on sociology. Press clippings and source materials on social tensions, revolutionary movements, and political and social structures in Eastern Europe, the Soviet Union, and the United States. Documents related to Soviet labor camps, Joseph Stalin, and the case of Lavrenti Beria, transcripts of the Czech Central Committee member Rudolf Slansky's trial (1952). Notes and lectures from his sociological studies at University of Rome. Arrangement in Series: The Assembly of Captive European Nations; The Central and East European Planning Board; The PAN-EUROPA Movement; The Polish Socialist Party (PPS); Private Papers and Correspondence; Political Studies; Sociological Studies.

Feliks Gross (1906-2006) was for many years a politician and an activist of the Central European federalist movements. He was the President of PIASA (1988-1999). Acquisition Note: Gift of Feliks Gross 1983-1999.