It was starting in the same year that the Heian Museum of Ancient History (today called the Museum of Kyoto) began putting in order and cataloging the collection of books belonging to the Reizei family, and little by little it became obvious just how extensive the collection was.
同年より平安博物館（現京都文化博物館）によって冷泉家所蔵本の整理・目録作成が始められ、徐々にその全体像が明らかにされてきた。