The National Library of Latvia (NLL) is founded in 1919. One of the key cornerstones of the NLL is the establishment of a national literature collection, its perpetual preservation and long-term public access. With more than 4 million units, the collection is the essence of the library, comprising Latvian and foreign publications about Latvia and Latvians, works issued in Latvia and also works of Latvian authors. The NLL promotes free and inventive usage of Latvia's cultural and scientific heritage, and its mission is to foster education, research, the development of knowledge and the quality of life.