Sofia University Library is the second largest library in Bulgaria. It possesses a rich collection of Bulgarian rare and old printed books (1806–1878), consisting of approximately 1600 units – books, newspapers and periodicals.
First editions of the most renowned authors and religious leaders from that age of the Bulgarian National Revival – Sophronius of Vratsa, Neophyte Rilski, Dr. Petar Beron, G.S. Rakovski and many others are preserved in its collections.
Sofia University Library rare and old printed books collection is divided into three parts: