All Things Julius Caesar: an Encyclopedia of Caesar's World and Legacy [2 Volumes] by 
One Europe, Many Nations by 
Historical Dictionary of the Reformation and Counter-Reformation by 
The Rise of the Medieval World, 500-1300 by 
Absolutism and the Scientific Revolution, 1600-1720 by 
The Hutchinson Dictionary of World History
Atlas of World History by 
Cities of the Classical World by 
The Greenwood Encyclopedia of Daily Life by 
Historic Documents: a Dictionary of Important People, Places and Events from Ancient Times to the Present by 