From ABC News: "People searching for art that was stolen by the Nazis have a new tool: a Web site that allows U.S. museum collections to be checked for long-lost pieces. The Nazi-Era Provenance Internet Portal is a searchable registry for people looking for items that disappeared in Europe between 1932 and 1946. It goes online Monday.

So far 66 museums have signed up to participate in the program overseen by the American Association of Museums. They include the Metropolitan Museum of Art in New York and the Chicago Institute of Art. The Web site has indexed 5,761 of their objects and an additional 1,663 are in process.

Similar sites in Europe will be reachable through a link with the U.S. Holocaust Memorial Museum in Washington.

The Nazis and their allies may have stolen as many as 1.5 million objects by the end of World War II. Estimates of the number still missing run as high as 100,000 works of museum quality. Some have found their way to the United States."