Lost Art Internet Database
The Lost Art Internet Database is a project of the Koordinierungsstelle für Kulturgutverluste, which is Germany central office for the documentation of lost cultural property. Lostart is the official German database to register cultural assets which as a result of Nazi–persecution were relocated, moved or seized especially from Jewish owners or which were relocated or stolen in the cause of World War II.
Google Index WW.II related sites, and Provenance Research