The article deals with the book collection of Jiří Ribay, the structure of his ownership notes (on the title page in the form of ‘Jiřího Ribay’, the year of purchase and the price), extant book catalogues from 1800 and 1803, and the copies preserved in institutional libraries in Europe. It has been shown on specific examples how Ribay acquired his books and how he sold some of the books still in his lifetime (e.g. to Mikuláš Jankovič in 1807). Research into archival documents has revealed some new information on how the former National and University Library in Prague acquired a part of Ribay’s books in 1857. The end of the paper outlines the potential use of a complete edition and a new treatment of Ribay’s catalogues for the history of book culture, retrospective bibliography and literary history.