Other
Univ. Of Kansas: Toltecs: Lecture Notes
A set of lecture notes detailing the Toltec culture and civilization. These notes are part of a larger course covering the Mesoamerican civilizations.
Wikimedia
Wikipedia: Toltec
Wikipedia offers great information on the Toltecs, a Pre-Columbian Native American people who dominated much of central Mexico.
Other
Arkansas State Parks: Children's Guide to the Knapp Trail [Pdf]
Children's trail guide to the Toltec Mounds Archeological State Park in Arkansas, with illustrations and notes about the archaeological history and culture of the early Toltec people.
Other
El Ojo Del Lago: The Enigma of Mexico's Plumed Serpent
Gives an account of how a Toltec ruler sent his son to study under Quetzalcoatl and of his return to take over the rule.