Nomination of the first ambassador (envoy) of Finland: 14/11/1919, Information provided by Finland.
Finnish chargé d'affaires (Karl Volter Boris Gyllenbögel) submitted introductory letters to the Ministry of Foreign Affairs in Warsaw - Establishment of diplomatic relations: 7/2/1920, Information provided by Poland.
The Polish envoy (Michał Sokolnicki) presented his credentials to the President of Finland (KaarloJuhoStåhlberg) in Helsingfors (Helsinki): 24/3/1920, Information provided by Poland.
Presentation of credentials of first ambassador (envoy) of Finland: 14/6/1920, Information provided by Finland.
The government of Finland recognized the Provisional Government of National Unity in Warsaw (TRJN) and proposed establishing diplomatic relations - telegram from the Finnish Ministry of Foreign Affairs to the Finnish envoy in Moscow (Reinhold Svento): 14/7/1945, Information provided by Poland.
The note (1945/7/28) from the chargé d'affaires of the TRJN embassy in Moscow (Władysław Matwin) to the chargé d'affaires of the Finnish embassy in Moscow (Reinhold Svento) with a proposal to simultaneously announce, in Warsaw and Helsinki, a joint announcement on the establishment of diplomatic relations on: 01/8/1945, Information provided by Poland.
The Finnish envoy (Eero Järnefelt) presented his credentials in Warsaw: 23/10/1945, Information provided by Poland.
The Polish envoy (Stefan Szumowski) presented his credentials to the acting president, Prime Minister of Finland (Juho Kusti Paasikivi) in Helsinki: 31/1/1946, Information provided by Poland.