Wikipedia Life of Darwin

http://en.wikipedia.org/wiki/Charles_Darwin

Timeline of Evolutionary Thought

http://www.ucmp.berkeley.edu/history/evotmline.html

Erasmus Darwin

http://www.ucmp.berkeley.edu/history/Edarwin.html

William Paley

http://www.ucmp.berkeley.edu/history/paley.html

Google Book Search

http://books.google.com/

Darwiniana at the Natural History Museum - Angraecum

http://piclib.nhm.ac.uk/piclib/www/search.php?search=charles+darwin