The article presents a source critical overview of published ego-documents on the Russian–Japanese War of 1904–1905 that are recorded in the Nauchnaya Sibirika database of the State Public Scientific and Technical Library of the Siberian Branch of the Russian Academy of Sciences (SPSTL SB RAS). Basing on E. V. Kodan’s three- aspect methodology (informational, biographical, and communicative analysis), it examines a corpus of 42 publications (19 memoirs, 17 diaries, and 6 collections of letters). The article focuses not only on genre typology but also on the critical assessment of the corpus’s representativeness within the chosen source database. It shows that different strategies of narrative construction (post-factual rationalization in memoirs, the sociolinguistic specificity of diaries, and filtering mechanisms in the publication of letters) require different approaches to source critical analysis and interpretation. It is demonstrated that memoirs tend to shift reconstruction toward diachronic reflection, whereas diaries and letters provide access to a synchronic perspective of the war. Despite the corpus’s limitations, the identified set of sources establishes reference points for further in-depth analysis of the personal dimension of the Russian- Japanese War and makes it possible to refine existing historiographical approaches to interpreting this conflict.
