For Darwin, letters were a vital form of communication; over his lifetime he had nearly 2,000 correspondents from a variety of backgrounds and from all over the world with whom he shared ideas, observations and samples. 

The Darwin Correspondence Project at Cambridge University Library is a unique undertaking to research and publish both in print and online all of Darwin's 15,000 surviving letters, reuniting those in the Library’s collection with others from collections all around the world.

Go to Darwin Correspondence Project website