His diary was believed to have been burned and lost in Great Kantō earthquake of 1923, but rediscovered by Kennosuke Nakamura, a Russian literary researcher, and published in 2004 as Dnevniki Sviatogo Nikolaia Iaponskogo (5 vols.
Buku hariannya diyakini terkubur dan hilang saat Gempa bumi besar Kanto pada 1923, namun ditemukan kembali oleh Kennosuke Nakamura, seorang peneliti sastra Rusia, dan diterbitkan pada 2004 dengan nama Dnevniki Sviatogo Nikolaia Iaponskogo (5 vol.