The Baltic Central Library is a research oriented collection on the history, languages, ethnography, folklore and culture in the widest understanding of the Baltic nations.

It was created in Germany, starting with 1940s by Oto Bong (1918-2006), collector of the testimonies on Baltic past, in 1994 he transferred the collection to the NLL.

Currently the collection holds approximately 20 thousand units (books, periodicals, manuscripts), as well as an archive of pictures, the visual recordings of the Baltics, it contains approximately 54 thousand photos and postcards.

The collection of the Baltic Central Library holds also monographs, periodicals, genealogical literature and memoirs, fictional works by Baltic German authors, Estonian and Lithuanian exile publications that are found only in this collection. Among the unpublished materials the archives of Baltic German politician and journalist Paul Shiemann (1876—1944) and architect Reinhold Guleke (1834—1927) deserve special interest.

The digitising of the most unique and historically most valuable graphic documents continues.