Text of German-Polish Agreement of January 26, 1934. (Document No. 1) The British War Bluebook.
Agreement of Mutual Assistance between the United Kingdom and Poland. London, August 25, 1939. (Document No. 19.) The British War Bluebook.
Agreement of Mutual Assistance between the United Kingdom and Poland. London, August 25, 1939. (Document No. 19.) The British War Bluebook.