Loans and donations
  • Jacek Barski, Petershagen
  • Stanisław Budyn, Rector of the Polish Catholic Mission, Hanover
  • Union of Poles in Germany, Bochum
  • Emanuela Danielewicz, Bochum
  • Bartek Fujak, Düsseldorf
  • The Consulate General of the Republic of Poland in Cologne
  • Instytut Śląski, Opole
  • Krzysztof Ingarden, Kraków
  • Dr. Ryszard Mroziuk, Polish Catholic Mission, Dortmund
  • Wiktor Opiński, Dortmund
  • Martin-Opitz-Library, Herne
  • Polish Scientific Publishers – Wydawnictwo Naukowe PWN, Warsaw
  • Prof. Dr. Jan Rydel, Kraków
  • Jürgen Vietig, Kleinmachnow