The Universitätsbibliothek Kassel (or Kassel University Library) is a library located in the city of Kassel, Germany. Composed of the collections of the former Landesbibliothek (state library) and Murhardsche Bibliothek der Stadt Kassel (Murhard Library of the City of Kassel) as well as that of the Kassel University library, amongst the library's holdings is the manuscript of the 9th-century German poem, the Hildebrandslied.

More informaiton on the Wikipedia page (English) [1] and German [2]