Charles Darwin transformed scientific thought with the publication of On the Origin of Species. His theory of evolution through natural selection became the basis of modern biology. Darwin’s ideas are fundamental to our understanding of the history of life on Earth.

The APS has the largest collection of Darwin manuscripts in North America. The APS is also one of the largest repositories of Darwin publications in the world, with many first editions of Darwin’s 19 books and translations of On the Origin of Species in 23 languages.