Letters to Robert Robinson, surnames beginning Th - Tu Correspondence with the following: Alan F Thomas, including a research reports on Pseudo-akuammigine and the synthesis of N:N-disubstituted p-aminophenols (1954); B D Tilak, at the National Chemical Laboratory in Poona [now Pune, India], about a possible visit to see Robinson in England (1966); J C Toole, concerning research in the chemistry departent at the University of New Brunswick (1956); S Horwood Tucker,, concerning complaints outlined in Robinson's review of his book which was published in 'Laboratory Practice' (1960). 1954-1966