The library of the Czartoryski Princes is one of the most valuable resources of culture heritage manuscripts and prints, created over generations, marked by the history of the country and the history of the family. One of the places where it was stored and multiplied was the palace in Sieniawa, where manuscripts and old prints from the Leżajsk-based Bernardine Fathers library found their way, thanks to the activities of Erwin Rödel. The article presents a part of these resources – brought by a book acquisitor and recorded in the inventory on 25 April 1875. The list contains information on three manuscripts and 115 print titles, the majority of which have been found in the present collection, while Bernardine provenance has been confirmed in nine.