Plik:Traktat ryski 1921.jpgDescriptionTraktat ryski 1921.jpg English: Signing of Soviet-Polish Peace Treaty document, Riga 18.03.1921. Date 18 March 1921 Source Adam Szelągowski
Plik:Stanisław Kauzik.jpgjpg Stanisław Kauzik (1891-1959) – Polish lawyer and politician Date 1921 Source National Library of Poland see: https://polona.pl/item/traktat-ryski
Plik:Henryk Strasburger.jpgjpg Henryk Strasburger (1887-1951), Polish economist and politician Date 1921 Source National Library of Poland see: https://polona.pl/item/traktat