Filter Results Refine these results by: Category: History General History United States Native American North America Europe Ancient Military Modern World Civilization Social History Russia & the Former Soviet Union Middle East Africa Asia Renaissance Maritime History & Piracy Revolutionary Expeditions & Discoveries Wars & Conflicts Holocaust Medieval Latin America Women African American Caribbean & West Indies Jewish Historiography Canada Islamic Norman Conquest to Late Medieval (1066-1485) Tudor & Elizabethan Era (1485-1603) Historical Geography Americas Reference Australia & New Zealand Polar Regions Study & Teaching Essays Oceania Audio Length Less Than 1 Hour 1 to 3 Hours 3 to 6 Hours 6 to 10 Hours 10 to 20 Hours More than 20 Hours