Charles Darwin letters

Darwin Correspondence Project exists to publish the definitive edition of letters to and from Charles Darwin, the most influential naturalist of the 19th century: when complete the series will comprise approximately 30 volumes, and is intended for both scholars and general readers. There is also one volume of Selected letters with two more planned."

• Darwin Correspondence Online Database

  Free-text searching now available

  The complete texts of letters from 1837 to 1859 are now available online, together with details of all known letters including brief summaries