Leningrad region

4–5 June 1940
Russian State Archive of Social and Political History
Coll. 17, ser. 166, fold. 625, ff. 71, 61–70.

Originals. Voting results – autographs of members of the Politburo of the Soviet Communist Party Central Committee

Leningrad Oblast. October 1940
Russian State Archives of Film and Photo Documents
Archive № 0-181253v.