1953-aisiais Crick papers from the National Library of Medicine. double helix Crick papers from the National Library of Medicine. discovered Watson and Crick’s discovery of the DNA double-helix great research conducted by Francis Crick and James Watson Crick papers from the National Library of Medicine. Crick papers from the National Library of Medicine. invented discovered invented discovery of the structure of DNA in 1953 discovered discovery of DNA in 1953