Online catalogue with approximately 585,000 descriptions of individual letters and parts of correspondence written in the early-modern and modern period (ca. 1500 - present). Contains information about more than 2 million letters. The letters come from the collections of Dutch heritage institutions, including the KB. For researchers.

Database of digitized German classical works spanning 11 centuries. Collection contains historical, philosophical, theological, political and art history texts. Also includes collections of essays, speeches and other non-literary material. Resource for historians, literary scholars and for those interested in German literature.

Database of tens of thousands of literary critiques and analyses from both contemporary and historical magazines, pamphlets, encyclopedias and books. Contains texts on children’s literature, classical and medieval literature and poetry, among others. Various popular subjects are also highlighted, such as dark humour in children's books and jealousy in Shakespeare's work. Interesting for researchers.

American index with biographies, bibliographies and analyses of more than 160,000 authors and their work. Contains more than 85,000 essays and reviews, one million articles and 130,000 audio clips. Provides information about authors worldwide from all disciplines and times. For literary scholars, students and enthusiasts.

All parts of Gale's Something About the Author series. Contains information in the form of texts and images about the life and work of authors and illustrators of books for children and young adults. Ideal for anyone who delves into literature for young people.

Hundreds of books from the Twayne's Author Series about authors from around the world and from different eras. Contains detailed information about the life and work of the authors, the history of literary movements and the development of literary genres. Useful for anyone working with the study of literature.

Database with information about more than 175,000 Dutch songs, from the Middle Ages to the 20th century. Contains love songs, psalms and children's songs, among others. With some songs, you can directly click through to the entire lyrics of the song, the melody or a sound recording. For music lovers and researchers.

Thousands of historical and contemporary folk tales in Dutch, Frisian and regional languages. The oldest stories date back to the Middle Ages. Various types of folk story genres are represented, such as fairy tales, legends, riddles and jokes. In addition to text, the database also contains sound material and images. Useful for anyone interested in oral literature.

Database with bibliographic information for more than 6,600 Dutch occasional poems (printed before 1800) from the collections of, among others, the Gemeentearchief van Amsterdam, the Centraal Bureau voor Genealogie and the Koninklijke Bibliotheek (the KB). You can view the poems in the KB’s reading room. Good source for literary experts.

Digital facsimiles of known and unknown texts from the 16th, 17th and 18th centuries. Includes poems, plays and pamphlets, and authors such as Joost van den Vondel, Anna Roemers and Willem van Oranje (William the Silent). The original texts can be viewed online. Source for text and literary