For Your Biologists/Historians: Darwin Online
Link: Darwin Online
Darwin Online is the largest and most widely consulted edition of the writings of Darwin ever published. More copies of Darwin's works have been downloaded from Darwin Online than have been printed by all publishers of the past 180 years combined. It is probably the most extensive scholarly website devoted to any historical figure.
This website contains over 100,000 pages of searchable text and 214,000 electronic images, at least one exemplar of all known Darwin publications, reproduced to the highest scholarly standards, both as searchable text and electronic images of the originals. The majority of these have been edited and annotated here for the first time with more than 4,800 original editorial notes.