- Advisory Committee on the Assessment of Restitution Application for Items of Cultural Value and the Second World War (Dutch Restitutions Committee): http://www.restitutiecommissie.nl/en
- Art Dealer to the Führer: Hildebrand Gurlitt’s Deep Nazi Ties (article from Der Spiegel): http://www.spiegel.de/international/germany/hildebrand-gurlitt-and-his-dubious-dealings-with-nazi-looted-art-a-940625.html
- Art Looting Intelligence Unit (ALIU) Reports and Red Flag Names List: http://www.lootedart.com/MVI3RM469661
- Art Loss Databases Proliferate: http://itsartlaw.com/2015/04/23/competing-or-complementing-art-loss-databases-proliferate/
- Art Recovery International: http://artrecovery.com/
- German Center for Cultural Property Losses: http://www.artlawreport.com/2014/10/09/germany-announces-center-for-cultural-property-losses-real-progress-or-window-dressing/.
- Holocaust Art Restitution Project: http://art-crime.blogspot.com/2013/09/harp-holocaust-art-restitution-project.html
- Holocaust Era Assets: Documenting Nazi Plunder of European Art: http://www.archives.gov/research/holocaust/records-and-research/documenting-nazi-plunder-of-european-art.html
- International Research: Nazi-Era Cultural Property (National Archives and Records Administration), State Archives in Belgium: http://www.archives.gov/research/holocaust/international-resources/belgium.html
- Looted Art: Central Registry of Information on Looted Cultural Property: http://www.lootedart.com/. Search fields: http://www.lootedart.com/search2.php.
- Lost Art Internet Database: http://www.lostart.de/Webs/DE/Start/Index.html
- NS-Raubgut in der Zentral- und Landesbibliothek Berlin: http://raubgut.zlb.de/index.php/About/Index_en. This website provides information on searches for looted books by the Central and Regional Library, Berlin and the library of the Stiftung Neue Synagoge – Centrum Judaicum.
- Plundered Art, A Perspective from the Holocaust Art Restitution Project: http://plundered-art.blogspot.com/
Books on Looted Art
- Lane, Mary M., Hitler’s Last Hostages, Looted Art and the Soul of the Third Reich, Public Affairs, 2019.