The Ostrobothnian Museum has a library that contains a library of antique rarities, ca. 6200 volumes, and a cultural and art historical reference library with ca. 21600 volumes.
THE NATURAL HISTORY LIBRARY
The natural history library includes ca. 5000 volumes, which are mostly owned by the Ostrobothnia Australis Society. FD Bror Petersson’s book collection was donated to the society and consists of ca. 12,000 books which can be found in the new science library Tritonia. The library receives annually about 70 professional journals.