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)
• Witold Gieszczyński, The communist apparatus of repression in the Kętrzyn District (1945–1956) , Echa Przeszłości: No. XX/2 (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)
• Witold Gieszczyński, June 1976 Protests in Warmia and Mazury in the Light of Source Materials from the Regional Committee of the Polish United Workers' Party in Olsztyn , Echa Przeszłości: No. XV (2014)
• Witold Gieszczyński, Crisis of Security Service in the Olsztyn Province (1954–1956) , Echa Przeszłości: No. XVIII (2017)
• 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)
• Witold Gieszczyński, The Club of Catholic Intellectuals in Olsztyn (1980-2013) , Echa Przeszłości: No. XIV (2013)
• Witold Gieszczyński, Activities of the Regional Office of Control of Publications and Shows in Olsztyn - an Analysis Based of the Annual Report for 1983 , Echa Przeszłości: No. XVI (2015)
• 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, 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)