http://psychclassics.yorku.ca/author.htm
A great collection of original articles. It includes some classic texts by Thorndike, including Animal Intelligence, and a very useful introduction to this paper by Wozniak.
http://www.snopes.com/science/skinner.asp
Have you ever wondered if Skinner really raised his daughter in a ‘Skinner Box’? Well, Snopes explains the truth behind this urban legend.
http://www.wagntrain.com/OC/
Excellent Website helping animal owners understand how they can use operant conditioning when training their pets.