See the pinned first post on www.thenightwitchesmovie.com (the hour-long documentary is best), and the photos there should be very useful.
Dear Ms. Barker,
Thank you for posting your request on History Hub!
According to the credits at the end of the documentary, the research for this documentary was conducted at archival institutions in Russia, including:
- Komsomol Archive which is currently part of the Russian State Archive of Socio-Political History (RGASPI) as Archival Holding No. 2. The website is http://www.rusarchives.ru/federal/rgani/ and they may be contacted via email at firstname.lastname@example.org
- Gosteleradiofond/GTRF. The website is https://gtrf.ru/ Please email them at email@example.com or firstname.lastname@example.org
- Gorky Film Studio
We hope this is helpful. Best of luck with your research!