Other
Mayan Monuments and Rubbings
A series of photos and rubbings from Mayan stone calendars and standing stones (stelae) that could be used as primary sources for a unit on Mayan history.
Other
Villanova University: Chichen Itza
This site from Villanova University contains many pictures of the Mayan City of Chichen Itza. Click on each thumbnail to enlarge.