Letters to Robert Robinson, surnames beginning Ra - Re Correspondence with the following: Margaret Rawlings, referencing a dispute with the BBC (1970); D Raymond-Hamet, concerning alkaloids (1953); John Read, concerning an alchemical engraving for Robinson (1949), with notes about the science department at St Andrews University and the translation of a book (both 1959); Allen F Reid, conerning a sample of tritium (1945). 1945-1970