EN
This article is devoted to the work of the Custodian of the Prague Imperial-Royal University Library (now the National Library of the Czech Republic) Josef Truhlář (1849-1914, at the library 1865-1907), who is known as the author of still used catalogues of manuscripts and monographs on humanism in the Czech Lands. The study focuses on Truhlář´s less known scientific work he carried out as a literary historian and editor in the field of medieval Old-Czech and Latin literature.