Printed editions from the holdings of the Book Chamber of Ukraine as a source of little-knowed facts from the history of the UРR and WUРR

The presented article is written in the context of bibliographic research and raises the problem of printed editions of Ukraine during the revolutions and the struggle for the preservation of Ukrainian statehood in 1917—1921. The study conducted corresponds to the list of scientific works planned for implementation at the State Scientific Institution "Book Chamber of Ukraine named after Ivan Fedorov" for 2025. The purpose of this article is to update the research discourse on the study of various domestic prints, and the main task is to study the printed editions of the Ukrainian People's Republic (UPR) and the Western Ukrainian People's Republic (WUPR) in the year of their Unification (1919). The article is devoted to the issue of the formation of the Confederate Ukraine, which took place on January 22, 1919. on Sophia Square in Kyiv. All the publications used by the author appear in the catalogs of the Book Chamber of Ukraine. Among the latter are many rare publications that contain little-known facts from the history of the named event, in particular: a propaganda leaflet-slogan about the capture of Kyiv by the armed forces of the UРR—WUРR on August 30, 1919; a leaflet with an announcement about the holding of the State Meeting of Representatives of the UРR and WUРR on October 28, 1919; a single issue of the journal "Flag of Ukraine", published by the state apparatus of Symon Petliura on November 10, 1919, etc. This investigation is written in accordance with the requirements of scientific methodology, is based on the principles of historicism, comprehensiveness, completeness and objectivity, and applies general (description, analysis, synthesis, generalization, classification) and special (periodization, historical-comparative, content analysis) methods of scientific research. The scientific novelty of the presented work lies in the systematization and generalization of book, press and sheet publications that were published in Ukraine during the period of the Union of the UРR and the WUРR. Among the latter are official publications of the authorities of that time, scientific, popular science, journalistic works, agitation and propaganda brochures, educational and fiction literature, etc. The result of the research was an event analysis of the dynamics of the process of the formation of the Great Sobornaya Ukraine from the proclamation to the abolition of the Union of the UРR and the WUРR and an emphasis on the special role of Symon Petliura in the attempt to preserve a single Ukrainian state. As a result, publications that are currently little used have been introduced into scientific circulation, the bibliographical description of which was compiled by specialists of the Book Chamber of Ukraine. The practical significance of the results obtained lies in the possibility of their application in future research.