Aleksander Sergeevich Bernstein

Sources:

1. New Pages in the Biography of Nikolai Alexandrovich Bernstein, by Vera L. Talis (A.S. Bernstein is mentioned in summary and in the text as a source of information).

2. http://forum.modelldepo.ru/showthread.php?t=16241 (in Russian): date of death, age

3. https://www.youtube.com/watch?v=9xCAHoGGZc0 (in Russian). Movie about A.S. Bernstein and his hobby. Notice: Portrait of his grandfather.