Image Use for Educational Purposes: Clearninghouses

ARS is a clearing house for the rights of the majority of the artists active in the 20th century

Art Resource is the clearing house for the rights of major European an American museums, archives and collections.

Contains over 12 million images from Museum Collections in Augsburg, Bayreuth, Berlin, Chemnitz, Dresden, Hamburg, Hannover, Kassel, Leipzig, Munich, Potsdam, Schwerin, Weimar, Paris, Chantilly, Ecouen, and Nizza.

Bridgeman Images provides copyright clearing and reproduction rights services

A major copyright clearance service

Scala Picture Archive represents over 7300 museums in Europe, Russia, United states and other countries. Images from the major museums of Italy, including the Vatican can be found here.