Rudolph was described by Peierls (Bird of Passage, p. 12) as 'my closest friend' at the Gymnasium in Oberschöneweide which Peierls attended 1916-1925. He later settled in Nuremberg and re-established regular postal contact in the 1970s with Peierls who was able to visit him on several occasions in the course of conferences.

Close school friend who settled in Nuremberg and re-established regular postal contact in the 1970s with Peierls. The school connection seems to have meant much to Rudolph; several letters commemorate anniversaries or gatherings or enclose letters from other classmates. A long letter, 24 Feb 1979, recounts events in Rudolph's life in the 1930s and early 1940s.

Close school friend who settled in Nuremberg and re-established regular postal contact in the 1970s with Peierls. The school connection seems to have meant much to Rudolph; several letters commemorate anniversaries or gatherings or enclose letters from other classmates.

Includes recollections of Peierls on holiday on the Isle of Wight in the 1920s.

Hans Thorner was an old friend from Munich days (Bird of Passage, pp. 30, 76) who later settled in London where he practised as a psychoanalyst.