The Afghan Serials Collection is an essential collection of partisan serials from the Wahdat Library, the most comprehensive private collection of rare newspapers and journals from Afghanistan. This collection is a major contribution to the preservation of the history of the region and is comprised of the careful selection of more than 2,500 individual issues of 46 newspapers and journals published in Persian, Pushto, Arabic, Urdu, and English. The collection covers the use of the press by many groups that sought to shape Afghanistan’s social and intellectual landscape including the Communist People’s Democratic Party (PDPA); exiled loyalists to the deposed Afghan monarchy; independent humanitarians and intellectuals seeking to better their country; anti-Soviet mujaheddin groups from a range of political movements; the Taliban; and minority political parties that have emerged following the post-2001 transition towards democracy.

Book Sales Catalogues Online offers a comprehensive bibliography of book sales catalogues printed in the Dutch Republic before 1801, providing full access to some 4,000 digital facsimiles from ca. 50 libraries across Europe. These catalogues are a key primary source for research on the history of the book and libraries, the history of ideas, the history of collecting, the history of literature, and the history of art. The catalogues contain information on books from all over Europe in various languages, such as Dutch, French, and Latin.

The Digital Library of the Catholic Reformation makes the documentary riches of this era accessible, adding functionalities that maximize the flexibility with which researchers can search, view, organize, and manipulate this historically important source material. With new content uploads occurring on a regular basis, the database offers a constantly growing treasury of documents, including papal and synodal decrees, catechisms and inquisitorial manuals, biblical commentaries, theological treatises and systems, liturgical writings, saints' lives, and devotional works.

The Digital Library of Classic Protestant Texts gives researchers access to an extensive range of seminal works from the Reformation and post-Reformation eras. With new content uploads occurring on a regular basis, the database offers a constantly growing treasury of theological writings, biblical commentaries, confessional documents, and polemical treatises written by more than 300 Protestant authors.