21. Letter from Wilder Penfield to Alan Gregg Publication: Produced: 15 April 1932 Subject(s): NeurologyResearch Support as Topic Archival Collection: The Alan Gregg Papers (Profiles in Science)
22. Letter from William Palmer to Alan Gregg Publication: Produced: 12 June 1935 Subject(s): Research Support as Topic Archival Collection: The Alan Gregg Papers (Profiles in Science)
23. Letter from Alan Gregg to William Palmer Publication: Produced: 20 June 1935 Subject(s): Research Support as Topic Archival Collection: The Alan Gregg Papers (Profiles in Science)
24. Letter from Alan Gregg to Walter B. Cannon Publication: Produced: 5 March 1936 Subject(s): Research Support as TopicPoliomyelitis Archival Collection: The Alan Gregg Papers (Profiles in Science)
25. Letter from Alan Gregg to Walter B. Cannon Publication: Produced: 18 March 1936 Subject(s): Research Support as Topic Archival Collection: The Alan Gregg Papers (Profiles in Science)
26. Letter from H. H. Dale to Alan Gregg Publication: Produced: 30 July 1931 Subject(s): Research Support as TopicViruses Archival Collection: The Alan Gregg Papers (Profiles in Science)
27. Letter from Alan Gregg to H. H. Dale Publication: Produced: 17 August 1931 Subject(s): Research Support as TopicViruses Archival Collection: The Alan Gregg Papers (Profiles in Science)
28. Letter from Alan Gregg to Leonard Colebrook Publication: Produced: 9 March 1937 Subject(s): Research Support as Topic Archival Collection: The Alan Gregg Papers (Profiles in Science)
29. Memorandum on Queen Charlotte's Hospital (London) Publication: Produced: 9 March 1937 Subject(s): Research Support as TopicPuerperal Infection Archival Collection: The Alan Gregg Papers (Profiles in Science)
30. Memorandum from Alan Gregg regarding Rockefeller Foundation policy for 1941 Publication: Produced: 12 November 1940 Subject(s): Research Support as TopicWorld War II Archival Collection: The Alan Gregg Papers (Profiles in Science)