1. Letter from Lord Charles Percy Snow to Francis Crick Publication: Produced: 10 April 1969 Subject(s): GeneticsContinental Population Groups Archival Collection: The Francis Crick Papers (Profiles in Science)
2. Letter from Francis Crick to Ernst Mayr Publication: Produced: 21 April 1971 Subject(s): GeneticsIntelligenceContinental Population Groups Archival Collection: The Francis Crick Papers (Profiles in Science)
3. Letter from Ernst Mayr to Francis Crick Publication: Produced: 14 April 1971 Subject(s): GeneticsIntelligenceContinental Population Groups Archival Collection: The Francis Crick Papers (Profiles in Science)
4. Letter from Francis Crick to Lord Charles Percy Snow Publication: Produced: 17 April 1969 Subject(s): GeneticsContinental Population Groups Archival Collection: The Francis Crick Papers (Profiles in Science)
5. Letter from John T. Edsall, Fogarty International Center to Francis Crick Publication: Produced: 5 March 1971 Subject(s): Continental Population GroupsIntelligence Archival Collection: The Francis Crick Papers (Profiles in Science)
6. Letter from Francis Crick to John T. Edsall, Fogarty International Center Publication: Produced: 22 February 1971 Subject(s): Continental Population GroupsIntelligence Archival Collection: The Francis Crick Papers (Profiles in Science)
7. Letter from Frances Bacus to Marshall W. Nirenberg Publication: Produced: 3 December 1971 Subject(s): Genetic CodeContinental Population Groups Archival Collection: The Marshall W. Nirenberg Papers (Profiles in Science)
