The scans Gabriel spoke of can be accessed here:
https://www.mediafire.com/view/7sxwi4qer3lxu8b/IMG_9916.jpg/filehttps://www.mediafire.com/view/292ybos3fm3mndm/IMG_9917.jpg/fileI do not speak Russian myself, but nevertheless, as far as I understand this article does provide some biographic information on Zaborov (for instance, he seems to have been a student of Myaskovsky, he was violinist in the orchestra of the Bolshoi theatre from 1950 until 1985, from 1965 as concert master, there seems to be a list of ballets in which he played violin solos, he also had a son, Igor, who lived from 1952 until 2015 and played the violin and composed himself etc.). However, the article does not seem to mention the symphony. Anyway, many thanks to Gabriel for doing research on him! :)
