A. (Arabic numerals) - Documents of Polish ministries, diplomatic posts and official institutions, 1919 - 1991 A.44 The Polish Embassy to the Holy See
The Vatican and Poland, Vol. I, 2.1.1953 – 10.8.1953 A. (Arabic numerals) – Documents of Polish ministries, diplomatic posts and official institutions, 1919 – 1991 A.44 The Polish Embassy to the Holy See