„Chronicles of Terror”. Base of testimonies of the Witold Pilecki Institute of Solidarity and Valor

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Archive of the Pilecki Institute, Chronicles of Terror, Edmund Feliks Janiszewski, Testimony from court/criminal proceedings from 05.11.1947, https://chroniclesofterror.pl/dlibra/show-content?id=1226 [access: 23.10.2026], original: Institute of National Remembrance, GK 182/154.

Institute of National Remembrance, GK 182/154, Investigation material [OKBZN, District Commission for the Investigation of German Crimes, Warsaw] on Auschwitz concentration camp, accessible: Archive of the Pilecki Institute, Chronicles of Terror.