The first supervisor of the Library was Jānis Misiņš, a librarian and the founder of the Latvian scientific bibliography (1862–1945).
Ti immuna a nangimaton iti Biblioteka ket ni Jānis Misiņš, ti maysa a biblitikero ken ti nagpundar iti sientipiko a bibliograpia ti Letonia (1862–1945).