1. Letter from Joan K. Grayson to Michael E. DeBakey Publication: Produced: 6 January 1965 Subject(s): Correspondence as TopicRespiratory TherapyConsultants Archival Collection: The Regional Medical Programs Collection (Profiles in Science)
2. Letter from Charles Yanofsky to Donald S. Fredrickson, National Institutes of Health Publication: Produced: 12 April 1977 Subject(s): DNA, RecombinantGuidelines as Topic Archival Collection: The Harold Varmus Papers (Profiles in Science)