Abstract
Ad 1. Historians, including many of those mentioned in the introduction to this questionnaire, played a large role in undermining the legitimacy of the Polish People’s Republic. From the late 1970s, attempts were made to describe the ‘blank spots’ in the official account of the recent past — the Ribbentrop-Molotov pact, the Katyń massacre, the nature of the regime that Bierut established, electoral falsification, legal abuses and judicial murders in the PRL and the development of opposition to the regime.