http://www.ushmm.org/wlc/en/article.php?ModuleId=10005475 Concentration Camps ushmm.org The United States Holocaust Memorial Museum offers http://www.ushmm.org/wlc/en/article.php?ModuleId=10005475 Concentration Camps ushmm.org/wlc/en/article.php?ModuleId=10005475 Concentration Camps, 1942-1945, USHMM