F98. 1446 items from 1621–1949: manuscripts (originals and transcripts), iconography, and other documents. In Lithuanian, Polish, Latin, Italian, and French.  Described in the Manuscripts Department’s card catalogue.

The founder of the collection is Valentina Horoškevičiūtė (Horoszkiewiczówna Walentyna, 1890–1949), Doctor of Philology, Academic Secretary of Stephen Batory University in 1922–1939.

The collection was acquired in 1949 from Valentina Horoškevičiūtė’s heirs in Vilnius.