Old Lithuanian book collection is the national pride. It contains publications in the Lithuanian language from 1545 up to 1917. It is the largest full-scale collection of old Lithuanian books in the world. The collection includes one of the two known exemplars of the first Lithuanian book Catechismus by M. Mažvydas, such uniques as the first (extant) book in Lithuanian published in the Grand Duchy of Lithuania - Katekizmas by M. Daukša (Vilnius, 1595), B. Vilentas’ Enchiridion and Evangelias bei epistolas (Karaliaučius, 1579), etc.