Additional factual information, especially about Nabokov's early years, mostly gleaned from archives in the USSR that had opened up in 1990, too late for inclusion in VNRY. Also some information that emerged from such readers of the published volume as Nabokov's pupil Alexander Sak. This material has been incorporated into the French, German, and Russian editions of VNRY.
Nabokov’s Russian Years Revisited
Periodical or collection
For SK: In Celebration of the Life and Career of Simon Karlinsky