The Monuments Men Foundation for the Preservation of Art has compiled a list of "most wanted" works of art and documents. They include works by Sandro Botticelli, Auguste Rodin and Paul Cezanne.
The foundation also notes that there are still missing albums from two series that document works taken by the Nazis.
The work of the U.S. Army's Monuments, Fine Arts and Archives Section is depicted in the new George Clooney movie "The Monuments Men."
Monuments Men Foundation for the Preservation of Art's "Most Wanted" lists: http://www.monumentsmenfoundation.org/join-the-hunt