Most read articles by the same author(s)

• Karol Sacewicz, Tactical operations of the communist people’s movement and the anti-fascist movement in the materials published by the Alliance for Combating Communism – an analysis of organized social anti-communist attitudes in Poland in the interwar period , Echa Przeszłości: No. XX/1 (2019)
• Karol Sacewicz, "The Case of the Emergency Organization of Polish Patriots" as Described by Polish Nationalist and Socialist Press in 1924-1926 , Echa Przeszłości: No. XVII (2016)
• Karol Sacewicz, The Communist Movement in Poland in 1918-1923 in the Light of Operational Materials and Reports of the Interior Ministry of the Second Republic of Poland , Echa Przeszłości: No. XIII (2012)
• Karol Sacewicz, Operation “Cedar Falls” (8–27 January 1967) in the light of the reports of the Second Department of Polish General Staff , Echa Przeszłości: No. XXIII/2 (2022)
• Karol Sacewicz, United Front Concepts of the Communist Workers Party of Poland / the Communist Party of Poland in the Light of a Document of the Ministry of the Interior of 23 November 1936 , Echa Przeszłości: No. XVII (2016)
• Karol Sacewicz, The Organisation and Operations of the Communist Movement inPoland in 1918-1925 in the Light of the Report of the Security Department of the Ministry of Internal Affairs , Echa Przeszłości: No. X (2009)
• Karol Sacewicz, Rafał Wnuk, "In the times of the first Soviets". The Polish conspiracy on the Eastern Borderland of the Second Polish Republic (September 1939 - June 1941) , Echa Przeszłości: No. IX (2008)
• Karol Sacewicz, The National Armed Forces against the communist underground. The orders of the secret service of 15 March 1943 , Echa Przeszłości: No. IX (2008)
• Witold Gieszczyński, Karol Sacewicz, A Tribute to Professor Tadeusz Filipkowski (1933-2009) , Echa Przeszłości: No. X (2009)
• Karol Sacewicz, The Polish Underground State vs. The Polish Communists, and the concept of counteraction , Echa Przeszłości: No. XXII/2 (2021)