Filter Results Refine these results by: Category: History United States Native American General History Social History North America Military Women Europe African American World Africa Expeditions & Discoveries Modern Jewish Revolutionary Russia & the Former Soviet Union Asia Wars & Conflicts Maritime History & Piracy Middle East Latin America Historical Geography Historiography Americas LGBTQ+ Caribbean & West Indies Canada Oceania Reference Essays Civilization Medieval Holocaust Ancient Polar Regions Australia & New Zealand Study & Teaching 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