On November 24th, 1859, Charles Darwin published The Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for Life. Eventually shortened (thank, God) to, On the Origin of Species. First editions can easily fetch $200,000 at auction. Not all copies have been accounted for, so check your shelves. This one is owned by the American Philosophical Society, which also has a huge and entertaining collection of translations and even the draft title page that Darwin sent to Lyell. If you’re shopping for a gift for a young science fan, get Dr Jan Pechenik’s version, The Readable Darwin: The Origin of Species, As Edited for Modern Readers.