Internet History Sourcebooks Project
Fordham University: Medieval Sourcebook: On the Opening of the First Crusade
A historical document about the opening of the First Crusade, describing preparations and the people involved.
University of Michigan
University of Michigan: Second Crusade (1147 1149)
A summary of the Second Crusade and the events that followed.
Other
The Peoples' Crusade
Imagine a multinational army of volunteers marching across a continent with minimal organization and direction to take on the most powerful army in the world. This was the People's Crusade, the First Crusade.