When Sergeyev died in Nice, France on 23 June 1951 the notations passed on for a brief time to a Russian associate of his, from whom Mona Inglesby purchased them, continuing to stage his productions with International Ballet until its closure in 1953.
Not all of the notations are complete, with some being rather vague in sections, leading some historians who have studied the collection to theorize that they were probably made to function simply as "reminders" for the Ballet Master or régisseur already familiar with these works.