Letters to Robert Robinson, surnames beginning He - Hi Correspondence with the following: Biographical note concerning Sir Ian Morris Heilbron by an unknown author [possibly for Robinson's memoirs] (nd); H L Hergert, concerning a sample of "synthetic 5:6:7:8:4'-pentahydroxy flavone", with a draft of Robinson's reply (1954-55); E Hill, concerning pigment extracted from the kangaroo paw plant (1939); G M Hills, concerning failed investigations into the matabolism of phenyl fatty acids (1934). 1939-1973