Currently the library, despite being robbed by the Germans during World War II, is one of the five largest libraries in Poland and contains roughly 400,000 volumes, including 30,000 books older than 150 years, Baron von der Lasa's 2,000-volume collection on chess history, and 14,000 manuscripts (including Napoleon's romantic novella Clisson et Eugénie, Adam Mickiewicz's Dziady (Part III) and a number of works by Juliusz Słowacki).
At present, the library, despite being plundered by the Germans during World War II, is one of the five largest libraries in Poland and comprises approximately 400,000 volumes, including around 30,000 antiquated books, Baron von der Lasa's extensive collection on chess history totaling 2,000 volumes, and 14,000 manuscripts (including Napoleon's romantic novella Clisson et Eugénie, Adam Mickiewicz's Dziady (Part III) and numerous works by Juliusz Słowacki).