Helsinki

Helsinki. 19 October 1939
Russian State Archives of Film and Photo Documents
Ser. 1, album 6460, № 2.

Photograph

12 November 1939
Archive of Foreign Policy of the Russian Federation
Coll. 023, ser. 22, box 146, fold. 23, ff. 137–140.

Original

17 November 1939
Russian State Military Archive
Coll. 37977, ser. 1, fold. 332, f. 3.

Certified copy