Suomen ulkomaanedustustojen raportit 1918-1945.

"All reports drawn up in Finland's missions abroad between 1918 and 1945 can be accessed on the Ministry's online service. At that time, written reports were the most important way for the missions to produce information on foreign policy, internal policy, the economy, society and events important from Finland's perspective. In addition to reports, the missions sent telegrams and letters, which are also stored in the archives of the Ministry for Foreign Affairs."