Peter Hartley has kept this letter David Jupp wrote to him in Feb 1963. It shows Jupp's careful italic handwriting. Peter was then a new boy at Sevenoaks School, having left Kaptagat in July 62.
In a later letter to Peter, Jupp mentions that he had received letters from "Hammond and Collier at King Edwards Canterbury & Mr Chitty had a letter from Bernacca - we have never heard from Russell, Pug, Edwards, Armstrong, Horwood or Winterson. They have never heard of the Post Box!". (Pug is of course Peter Underwood-Ground, all mentioned are Upper 6th 1962 boys.)