Wikimedia
Wikipedia: Parable
This is an encyclopedia entry for the word "Parable." It defines the word, discusses its origins, and provides examples.
University of Florida
Baldwin Library: The Parables of Our Lord by J. Moyr Smith
This is an online photocopy of the original of the children's book The Parables of Our Lord by J. Moyr Smith, an illustrated book of parables from the Bible.
PBS
Pbs Frontline: The Parables
An article in which the author talks about the different parables used by Jesus and how they could illustrate specific points in his teachings.