Interrogation protocol of Karl Musolf – ethnic German from Solec Kujawski, member of so-called Volksdeutscher Selbstschutz. This document includes Musolf’s confession of murder on few Poles, as well as his statement that he received an order from his superior – SS-Obersturmbannführer from Bydgoszcz – to kill all members of the “Polish Western Union” (pl: "Polski Związek Zachodni" – PZZ). This document was found after the war in the archives of Nazi-German “Special court in Bydgoszcz” (de: "Sondergericht Bromberg").