Arts and Humanities Through the Eras
Dictionary of Scientific Biography by 
The Black Death
The British Monarchy by 
The Crusades by 
Encyclopedia of European Social History by 
Europe 1450-1789 by The Greenhaven Encyclopedia of The Middle Ages by 
The Middle Ages by 
Women in World History by 
World Eras, Vol. 2: The Rise and Spread of Islam, 622-1500 by 
Epics for Students
British Mythology by 
British and Irish Literature and Its Times: British and Irish Literature to the 1830s
Gale Contextual Encyclopedia of World Literature
Feminism in Literature by 
Reference Guide to World Literature