Below are a selected sample. Use Reference Universe to find more.
Galileo Project: The Galileo Project is a source of information on the life and work of Galileo Galilei (1564-1642).
Newton Project: The Newton Project is a non-profit organization dedicated to making his unpublished and published works freely available online.
Darwin Online: The largest and most widely consulted edition of the writings of Darwin ever published.
Darwin Correspondence Project: On this site you can read and search the full texts of more than 6000 of Darwin’s letters, and find information on 9,000 more.
National Academy of Sciences: Compatability of Science & Religion, with specific emphasis on evolution.
Your suggestions are welcome!