Tere!
Estonian ambassadors in Poland and Polish ambassadors in Estonia.
In my view, very interesting photos.
An amazing fact is meeting between Estonian ambassador Robert Moellersone with Adolf Hitler on 19 December, 1939. There are a lot of other photos, as well.
To see these photos you have to visit http://www.audiovis.nac.gov.pl/search/ and you have to write in the search box: Estonia.

Unfortunately this site is blocked for public visiting. If you managed to visit it when it was free you were lucky.