This article evaluates the book dedicated to the work of Nikolai Korolkov. The authors of the review point out the necessity to expand the database of the sources with the help of the Moscow archives, they also suggest that the references to many available sources could help create a more holistic impression of the personality of the writer. Thus, the review of the work The city of roofs, deposited in the Russian State Archive of Literature and Art, has not been mentioned. The same archive holds other documents relevant for this topic.
