The collection comprises numerous extremely rare and unique Protestant works from the 15th to the late 18th century, with an emphasis on biblical studies. Exegetical, philological and grammatical-Hebrew studies form the main part. In addition, the collection contains many titles relating to Hungary and the history of the Hungarian Protestant Church. It also includes numerous academic writings from other Protestant universities, particularly in Germany.
A particular focus is on academic publications from the Frisian University in Franeker. These include hundreds of disputations, dissertations and inaugural lectures. During its existence from 1585 to 1811, this university was an important Protestant educational centre in Europe, where more than 1,200 Hungarians came to study, mainly theology.
In 2022, the Postma-Gosker Library was expanded with a second donation. That part is central to this exhibition. This new donation comprises more than two hundred titles, the content of which directly ties in with the focus of the 2012 donation. In addition, this donation contains several masterpieces, including the great work by Joannes Reuchlin, The rudimentis hebraicis. Pforzheim, 1506. Exceptional in size and format is the 34-volume Thesaurus antiquitatum sacrarum by the 18th-century Italian scholar Blasio Ugolino. This work, printed in Venice, contains a large collection of scholarly studies and treatises on the ancient Hebrew world. A library in itself!