1. Letter from Francis Crick to Sydney Brenner Publication: Produced: 26 September 1977 Subject(s): GeneticsGenetic Engineering Archival Collection: The Francis Crick Papers (Profiles in Science)
2. Letter from Arthur J. Walker to Francis Crick, Leslie Barnett, Sydney Brenner, and R. J. Watts-Tobin Publication: Produced: 1 February 1962 Subject(s): GeneticsEnvironmentGenesGenetic Engineering Archival Collection: The Marshall W. Nirenberg Papers (Profiles in Science)