The Caucasica Collection contains Dagestan Muslim works printed in the Russian empire between 1905 and 1911, received as deposit copies.
The collection is small (40 volumes), but extremely rare.
For more information, see Halén, Harry, Handbook of Oriental Collections in Finland. Scandinavian Institute of Asian Studies. Monograph series No. 31. London & Malmö 1977, s. 287–288