1. Letter from Felix Haurowitz to Michael Heidelberger Publication: Produced: 10 February 1948 Subject(s): Allergy and ImmunologyAntigen-Antibody Reactions Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
2. Letter from Michael Heidelberger to Felix Haurowitz Publication: Produced: 16 February 1948 Subject(s): Antigen-Antibody Reactions Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
3. Letter from A. D. Hershey to Michael Heidelberger Publication: Produced: [10 April 1941] Subject(s): Antigen-Antibody ReactionsBacteriophagesKinetics Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
4. Letter from Michael Heidelberger to A. D. Hershey Publication: Produced: 28 April 1941 Subject(s): Antigen-Antibody ReactionsBacteriophagesKinetics Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
5. Letter from A. D. Hershey to Michael Heidelberger Publication: Produced: 1 May 1941 Subject(s): Antigen-Antibody ReactionsBacteriophagesKinetics Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
6. Letter from Michael Heidelberger to A. D. Hershey Publication: Produced: 28 July 1942 Subject(s): Antigen-Antibody ReactionsBacteriophagesKinetics Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
7. Letter from A. D. Hershey to Michael Heidelberger Publication: Produced: 4 August 1942 Subject(s): Antigen-Antibody ReactionsBacteriophagesKinetics Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
8. Letter from Kai O. Pedersen to Michael Heidelberger Publication: Produced: 6 December 1939 Subject(s): World War IIPoliticsAntigen-Antibody Reactions Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
9. Letter from Florence R. Sabin to Michael Heidelberger Publication: Produced: 24 October 1941 Subject(s): Antigen-Antibody Reactions Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
10. Letter from William C. Boyd, Boston University to Michael Heidelberger Publication: Produced: 10 December 1940 Subject(s): PrecipitinsAgglutinationAntigen-Antibody ReactionsAllergy and Immunology Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
