Rice University
Galileo Project: The Copernican System
This site from The Galileo Project of Rice University contains information relating to Copernicus's sun-centered solar system theory. Pictures are provided throughout this article along with links to additional information.
Other
Nicolai Copernici Musuem: Life of Nicolaus Copernicus
The Nicolai Copernici Museum has a timeline containing major events in Copernicus's life.