Summit of the Prime Ministers of Estonia, Latvia, Lithuania and Finland

First row from the left: Jonas Šimkus, Minister of Defence of Lithuania, Mykolas Sleževičius, Prime Minister of Lithuania, Otto August Strandman, Prime Minister of Estonia, Juho Heikki Vennola, Prime Minister of Finland; second from the right - Jonas Šliūpas, Diplomatic Representative of Lithuania to Latvia and Estonia, third - Kārlis Ulmanis, Prime Minister of Latvia
Estonia, 1920 | Unknown author
Lithuanian Central State Archives