Seeker
Seeker: Week of 11 25 13: Oldest Buddha Shrine Dates Birth 6th C. b.c.
When was the Buddha, or Enlightened One, born, and when? The recent discovery of the oldest known Buddist shrine tells archaelogists more than we've ever know.
Buddha Dharma Education Association
Buddha Net: Theravda Buddhism: The Teachings of the Elders
This site explains the origins and history of Theraveda Buddhism, including a link to a map of Southeast Asia showing areas where Theravada dominates.
Buddha Dharma Education Association
Buddha Net: Theravada Timeline
A timeline plotting the significant events in Theravda Buddhist history. Timeline starts in 383 B.C.E. and continues to the present.
Other
Interfaith Dialog Center: Buddhism
A brief history of Buddhism with a description of its beliefs (including a list of the Eightfold Path), its sects, and an explanation of Buddhism's presence in the West.
Buddha Dharma Education Association
Buddha Net: Buddhist Studies: A Timeline of Buddhist History
Timeline outlines Buddhist history from the birth of the Buddha to the late twentieth century.