The article is about substitute coins issued by Jan Turno in his demesne in Słomowo. The author presents a short history of the Turno family and the short biography of Jan Turno, and then explains the circumstances of the issue of the substitute money from Słomowo in Greater Poland, Oborniki County.

The medieval manuscripts of St. Mary’s Church Library ( Biblioteka Mariacka) are the oldest part of the collections of the Gdansk Library, with some items dating back to the 12th century. In view of their topics and history, they provide a priceless testimony to the history of Pomerania. The value of the manuscripts lies not only in their contents and ornamentation, but also in the fact that they include parchment documents bound by Gdansk bookbinders, which have survived in an excellent condition. The uniqueness of the collection was confirmed by the missal Missale secundum notulam dominorum Teutonicorum (Ms. Mar. F 332) being entered on UNESCO’s “Memory of the World” Polish National Register in 2016.
After 1921, not a single study discussing the provenance of books kept in St. Mary’s Church Library was written. This paper is an attempt to partially fill in the gap – to indicate the scribes and owners of the most valuable manuscripts. Among the latter, special attention should be devoted to clergymen connected with St. Mary’s church: Andreas Slommow, Heinrich Calow, and Johannes Zager, a lawyer Nicolaus Velan, and a scribe Johannes Rasoris from Nidzica.
For the purposes of this article, books kept by the Library were divided into sections: theology, philosophy, law and medicine; manuscripts related to the Teutonic Order were also given a separate section. Such a division may help the readers use the library holdings. The text also discusses the most important wartime losses.