Ancient
Antiquity: A World History A complete online book with maps and index. Frank E. Smitha.
Links to Ancient History Assyria to Rome
Perseus Project Searchable digital library of the ancient world. Tufts University

Medieval
Dictionary of Feudal Terms
Knighthood, Chivalry & Tournaments Resource Library
On-Line Reference Book for Medieval Studies Rhodes College
The Middle Ages What was life like then?
Charlemagne (Carolus Magnus, Karl der Große) in German