Getty museum has received a National Endowment for the Humanities and German Research Foundation grants to digitize German art catalogs from 1930 - 1945 and to make them available to the public. Press release here. This is a step in the right direction and will provide an excellent tool for tracing artworks looted during the Nazi era. More will be necessary, since pre-war catalalogues show where property was before World War II and at the time Jewish people and other persecutees bought it and is often critical in establishing provenance in favor of families who were looted.
Great step in the right direction. Los Angeles Times story here.http://latimesblogs.latimes.com/culturemonster/2010/07/getty-receives-grant-money-for-german-art-project.html
Purchase Copyright Litigation Handbook from West here