ENThe aim of the research realised within the project was to present the book culture in the Roman Catholic men monasteries existing in the Grand Duchy of Lithuania since the elimination of the urban monastery network and the cassation of its individual outposts. An analysis was made of the literature created and used by these communities. The project assumed a multi-aspect presentation of the phenomena and processes of functioning of the texts in monastic environments. The research included an analysis of the formation and education of monks, the canon of the books created and stored by them, which were used in priesthood, education, but also scientific and readership work and the monastic publishing initiatives in the context of the social interactions of these monasteries. Keywords: Book history, monastery, sources, Grand Duchy of Lithuania, 15th-18th centuries. [From the publication]