In 1961 Iceland and Denmark reached an agreement concerning the return of Icelandic manuscripts.
In 1965 the Danish parliament passed legislation which decreed that a significant part of the collection should be returned to Iceland. Two thirds of the manuscripts would return to Iceland while a third would remain in the Danish institute of Árni Magnússon. The manuscripts are today kept in the Árni Magnússon Institute in Iceland. Both institutions share the appointment of the collection to the UNESCO Memory of the World Register.
The transfer of the manuscripts began in april 1971, concluding June 20, 1997, with a formal ceremony at the University of Iceland.