TRC-A-1924 conventionDeclaration detailLevel http://ica-atom.org/doc/RS-2#5.4 Grand Challenge Cup Grand Challenge Cup 1950 Published Grand Challenge Cup 1950 - Thames RC conventionDeclaration 1950 Wilson, Timothy Peter 1950 1950 Wood, A J G 1950 1950 Graydon, B 1950 1950 Debenham, Jeremy 1950 1950 Pope, John 1950 1950 Sangster, John Laing 1950 1950 Shaw, J B 1950 1950 Watson, Alan R 1950 1950 Kirkpatrick, Peter Crichton 1950 1950