2.1. Articles in professional journals:

     2.1.1. Typewritten copies of Polish literature translations, concerning                Biskupin site, made by Germans during the Second World War.

             - Z Otchłani Wieków, 1936, vol. 6-7
             - Z Otchłani Wieków, 1936, vol. 6-7
             - Z Otchłani Wieków, 1936, vol. 8-9
             - Quotation from the book: W. Kowalenko, Grody i osadnictwo grodowe
                Wielkopolski, 1938, s.180
             - Insertion: Urstätt [Biskupin] made by Germans on Polish note with
               article from the journal Z Otchłani Wiekow, 1935, vol. 4-5

     2.1.2. Press cuttings from Polish journals:

             - Z Otchłani Wieków, 1947, vol. 9-10
             - Z Otchłani Wieków, 1948, vol. 9-10

2.2. Articles from newspapers:

      - Kuryer Literacko - Naukowy, No 43, 22 Oct 1934
      - Ilustrowany Kurier Codzienny, No 217, 7 Aug 1935
      - Warszawski Dziennik Narodowy 20 Apr 1937
      - Kurier Poznański 17 May 1938
      - Krakauer Zeitung 12 Dec 1944, (Nazi Occupation Daily)
      - Głos Wielkopolski, 23 Jan 1946
      - K.U.P. [?] No 20, 21, ? Jan 1946
      - Svobodny zitrek /Praha/ 30 Oct 1947