"Entartete Kunst" ("Degenerate Art") Complete Inventory. Digitized by the Victoria & Albert Museum.
French Revolution Digital Archive: Collaboration of Stanford University Libraries and the Bibliothèque nationale de France. High resolution images depicting the visual culture of the French Revolution.
History, Art and Archives: Collections of the US House of Representatives.
Washington As It Was: Photographs by Theodor Horydczak, 1923-1959. Library of Congress American Memory Project.