Order of Merit Letters, cables and telegrams of congratulation: P-R Correspondents include: Gilbert Richard Mitchison (Baron Mitchison), Lionel Peppe, Alfred Pippard, Sir Harry Platt, Sir Edward Playfair, Magda Polanyi, Thomas Reid, J Ring, Peter Ritchie (Baron Ritchie-Calder of Balmashannar), Sir Austin Robinson, George Rochester and Claude Maurice Rogers 1967