Digital Einstein Papers Home – The collected paper of Albert Einstein
Le opere, Galileo Galilei, pubbl. 1890, vol I (segue l’0pera completa fino al 1896)
Darwin online – Almost all is online only here: such as 1st editions of Voyage of the Beagle, Zoology, Descent of Man, all editions of Origin of Species (1st, 2d, 3d, 4th, 5th & 6th); important manuscripts: Beagle Diary & field notebooks, Journal, transmutation notebooks and Autobiography.
Darwin Correspondence Project – the full texts of more than 9,000 of Charles Darwin’s letters. Complete transcripts of all known letters Darwin wrote and received up to the year 1873.
Guides to Russell’s Writings – The Bertrand Russell Archives, McMaster University (Canada)
Wallace online – Complete edition of the writings of Alfred Russel Wallace, including the first compilation of his specimens and the only way to search all of his publications with a search engine.
Wallace page – Version Two of “The Alfred Russel Wallace Page”, a website dedicated to Alfred Russel Wallace (1823-1913).