Germany - Poland
The chargé d'affaires of the Polish Legation (Wilhelm Feldman) submitted introductory letters to the Ministry of Foreign Affairs in Berlin: 20/11/1918, Information provided by Poland.
The chargé d'affaires of the Polish Legation (Ignacy Szebeko) submitted introductory letters to the Ministry of Foreign Affairs in Berlin- Establishment of diplomatic relations: 9/3/1920, Information provided by Poland.
The chargé d'affaires of the German Legation (Alfred von Oberndorff) submitted introductory letters to the Ministry of Foreign Affairs in Warsaw: 12/5/1920, Information provided by Poland.
The Polish envoy (Jerzy Madeyski) presented his credentials: 6/10/1921, Information provided by Poland.
The Ministers of Foreign Affairs of the Polish People's Republic (PRL) (Stefan Olszowski) and the Federal Republic of Germany (FRG) (Walter Scheel), during an official meeting in Bonn, agreed and signed a joint communique on the establishment of diplomatic relations and the establishment of embassies: 14/9/1972, Information provided by Germany and Poland.

German Democratic Republic - Poland
A telegram from the head of the Ministry of Foreign Affairs (Stanisław Leszczycki) notifying the Minister of Foreign Affairs of the German Democratic Republic (GDR) (Georg Dertinger) of the recognition of the GDR government and the establishment of a diplomatic representation to it: 18/10/1949, Information provided by Germany and Poland.