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. II, 23.6.1959 – 28.12.1959 A. (Arabic numerals) – Documents of Polish ministries, diplomatic posts and official institutions, 1919 – 1991 A.44 The Polish Embassy to the Holy See