Correspondence and notes relating to Sir John W Cornforth's involvement with fraud investigation of Samir Chatterjee This file contains correspondence and printed works relating to Sir John Cornforth's challenge of a paper by Samir Chatterjee which appeared in Tetrahedron Letters. After criticism of his challenge, Cornforth supervised student Tony Pengally, who carried out the same experiment in order to test the findings. The results of this work are also in the file. 1982 - 1983