Understanding Evolution - A detailed look at the research and evidence leading to the theory of evolution.
An interactive java applet by Ben Fry (benfry.com) that shows how Darwins Origin of Species was changed and updated over six editions as he uncovered new data about natural selection.
G. Cuvier - Full text of this classic 1827 work.
Letter from Alfred Russel Wallace to Charles Darwin (1858).
News & Events
From the New York Times
The original research site of the scientists that discovered the fossil link between fish and early amphibians.
Google - Research database allows searching of the scholarly literature.