The Brumberg Sisters

Valentina and Zinaida Brumberg, Jewish sisters who became known as the “Grandmothers of Russian Animation” for their contribution to the field of animated fairy tales within the Soviet Animation studio Soyutzmultfilm.

For more information:
Drawing the Iron Curtain: Jews and the Golden Age of Soviet Animation
https://animation-stories.com/tag/the-brumberg-sisters/

http://booksandjournals.brillonline.com/content/journals/10.1163/18718000-12340055