In the Umeå University Library Special Collections there are about 25,000 titles which belonged to professor Olof Östergren (1874-1963), Uppsala. The collection has its emphasis on language studies, but also includes much in other subject areas, in Swedish as well as foreign titles. The collection has items representing all centuries, from the beginnings of book printing in the 15th century up until 1956. A handwritten alphabetical catalog, which is copied into 18 volumes is in the main library's circulation area by the journal catalog. The books in the Östergren collection are for in-library use only.