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. Since Saratov Association of Proletariat Writers (SAPP) was not validated in 1924 due to the lack of charter, the filing documents of its members are in Moscow, in the place where the funds of the principal organization – All-Union Association of Proletariat Writers (VAPP) – are deposited. The record card of the VAPP member was not used, although it could have helped to compile a more thorough biographical reference about the writer, since the record cards of this type always contained profession and the place of work or study of the member of the organization. The bibliography does not mention the already arranged chronicle of SAPP activity, the works of P. A. Bugaenko, A. K. Zhuikova, A. A. Demchenko, I. Yu. Ivanyushina, E. G. Elina, A. N. Donin and many others are not touched upon either. The most recent article by A. S. Kasovich is not cited (2022). Nevertheless, it is highlighted that the authors have delivered significant material for further research. Saratov school of philology is urged to render bibliographic help to the authors for the comprehensive augmentation of knowledge.