National Humanities Center
National Humanities Center: Teacher Serve: Catholics & the 20th Century
This National Humanities Center essay discusses the movement of American Roman Catholicism into mainstream culture from a historical perspective.
Global Catholic Network
Catholic Information Network: All About Lent
This site from the Catholic Information Network is a long and detailed discussion of Lent in a question-and-answer format. It attempts to address the major questions associated with observing the Season of Lent for Roman Catholics.
Other
St. Ignatius: A Time Line of Church History
A brief timeline showing the major events of Church history, from the Orthodox perspective. Includes a brief history and explanation of key events.