Cause & Effect: Ancient Civilizations: Ancient India
Empires in the Middle Ages: The Holy Roman Empire
Empires in the Middle Ages: The Mongol Empire
Cause & Effect: Modern Wars: The Cold War
The Britannica Guide to Islam: The Islamic World from Prehistory to 1041
The Britannica Guide to Islam: Islamic Art and Architecture
Cause & Effect: Modern Wars: World War I
The Britannica Guide to Islam: The Foundations of Islam and Islamic Thought
Power and Religion in Medieval and Renaissance Times: The End of the Middle Ages
Power and Religion in Medieval and Renaissance Times: The Italian and Northern Renaissance
Russian Revolution of 1917: The Essential Reference Guide
American History: The Salem Witch Trials: A Crisis in Puritan New England
World History: The Black Death: Bubonic Plague Attacks Europe
African Kingdoms: An Encyclopedia of Empires and Civilizations
Primary Sources in World Warfare: World War II
Hidden Heroes: Women with Wings: Women Pilots of World War II
The Nile: An Encyclopedia of Geography, History, and Culture
Warriors Around the World: Mongol Warriors
A Visual History of the World: A Visual History of the Great Civilizations
Primary Sources in World Warfare: World War I