1. Letter from Michael Heidelberger to Kai O. Pedersen Publication: Produced: 15 February 1935 Subject(s): Molecular WeightThyroglobulinUltracentrifugation Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
2. Letter from Kai O. Pedersen to Michael Heidelberger Publication: Produced: 27 January 1935 Subject(s): Molecular WeightThyroglobulinUltracentrifugation Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
