1. Letter from Charles Warren and Barry Keene to Maxine Singer Publication: Produced: 29 December 1976 Subject(s): DNA, RecombinantRisk Assessment Archival Collection: The Maxine Singer Papers (Profiles in Science)
2. Letter from Maxine Singer to Charles Warren Publication: Produced: 7 January 1977 Subject(s): DNA, RecombinantRisk Assessment Archival Collection: The Maxine Singer Papers (Profiles in Science)
3. Letter from Richard Goldstein to Donald S. Fredrickson Publication: Produced: 29 December 1979 Subject(s): Containment of BiohazardsRisk AssessmentDNA, Recombinant Archival Collection: The Donald S. Fredrickson Papers (Profiles in Science)
4. Letter from Susan Wright to Patricia Harris, Department of Health, Education, and Welfare Publication: Produced: 30 December 1979 Subject(s): DNA, RecombinantContainment of BiohazardsRisk Assessment Archival Collection: The Donald S. Fredrickson Papers (Profiles in Science)
5. Letter from Francine Robinson, Coalition for Responsible Genetic Research to Patricia Harris, Department of Health, Education, and Welfare Publication: Produced: 21 January 1980 Subject(s): Risk AssessmentContainment of BiohazardsDNA, Recombinant Archival Collection: The Donald S. Fredrickson Papers (Profiles in Science)
