1. 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)
2. 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)
3. Letter from Sol Spiegelman to Roger Y. Stanier Publication: Produced: 20 February 1951 Subject(s): YeastsEnzymesKinetics Archival Collection: The Sol Spiegelman Papers (Profiles in Science)
