Correspondence Between John Turton and Charles Bonnet Photostat copies of correspondence between John Turton (1735-1806) and Charles Bonnet (1720-1793), covering the date range 1763-1782. Copy of originals located at the Genve Bibliotheque Publique et Universitaire, Ref: MSS. Bo. 70 - 76. The letters are referenced in De Beer, "John Turton, F.R.S", Notes and Records of the Royal Society, 12, (1956), pp. 77-97. c1955