The article presents the results of a complex analysis of dedicatory inscriptions on books gifted to Tomsk science fiction and fantasy writer Viktor Kolupaev by his colleagues. It is a great problem to estimate the informative value of inscriptions, while approaches to their research are disjointed, so the purpose of Kolupaev's inscripton corpus specification is the synthesis of various objective and subjective data, which are differently interpreted by bibliologists, historians of literature, sociologists and linguists. The study has shown that the authors' dedicatory inscriptions are the most informative for modeling an «almost real» recipient's image, inscriptor's rhetorical image, and a system of social relations in the writing community.