His Of molecules and men, 1966.

Papers of DNA pioneer and Nobel Laureate Francis Crick added to National Library of Medicine's Profiles in science Web site, Feb. 2005 (Francis Harry Compton Crick; b. 1916-2004)

Wikipedia WWW site, June 28, 2005 (under Francis Crick: Professor Francis Harry Compton Crick, OM, FRS; b. June 8, 1916, Northampton; d. July 28, 2004, San Diego; British physicist, molecular biologist and neuroscientist, most noted for being one of the discoverers of the structure of the DNA molecule)

OCLC, Oct. 25, 2006 (hdgs.: Crick, Francis, 1916-2004; Crick, F. H. C.; usage: Francis Crick; Francis H.C. Crick; F.H.C. Crick)