This essay describes and analyses the development within the Polish Socialist Workers' Party (Polska Socjalistyczna Partia Robotnicza, PSPR) in the Czechoslovak Tesin area in 1936-1938. This party was one of the three political parties that represented interests of the Polish minority in the Tesin area in the interwar period. In 1934-1935, a dispute broke out between the PSPR and other Polish parties. It was inspired by the start of an anti-Czechoslovak campaign in Poland after signing the Treaty of Non-Aggression between Poland and the Nazi Germany. All the parties, however, resumed their collaboration in 1938 and, in September 1938, when a large section of the Tesin area was annexed by Poland, the PSPR supported this move. The essay clarifies the principle that changed the PSPR leaders' standpoints of in those two years. The PSPR party magazine, the weekly Robotnik Slaski (the Silesian Worker) served as a principal source for writing this essay. As regards archival sources, documents from Czechoslovak offices were used most frequently. They concern materials from the police office in Moravian Ostrava which are deposited in the State Regional Archive in Opava and documents from the Brno Land Office deposited in the Moravian Land Archive.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.