The American Association of Museums Guidelines Concerning the Unlawful Appropriation of Objects During the Nazi Era.
Report of the Association of Art Museum Directors Task Force on the Spoliation of Art During the Nazi World War II Era (1933-1945).
The German government's list of more than 2,200 looted artworks.
Project for the Documentation of Wartime Cultural Losses.
Web site of the National Archives and Records Administration of the United States.
Web site of the Presidential Advisory Commission on Holocaust Assets in the United States.