From the National Archives, the International research portal for records related to Nazi-era cultural property is available online.
The International Research Portal is a collaboration of national and other archival institutions with records that pertain to Nazi-Era cultural property. These archival institutions, along with expert national and international organizations, are working together to extend public access to the widely-dispersed records through a single Internet portal. The portal will enable families to research their losses, provenance researchers to locate important documentation, and historians to study newly accessible materials on the history of this period. This collaborative project was established to fulfill the 1998 Washington Conference Principles on Nazi-Confiscated Art, the 2000 Vilnius Forum Declaration and the 2009 Terezin Declaration, in particular on the importance of making all such records publicly accessible.