  In the Occhialini-Dilworth Archives of the University of Milan are preserved
four typescripts by E. Amaldi, dealing with F.G. Houtermans, German physicist,
who fled to the USSR to escape the Nazis. During a Stalinist purge he was
arrested. The typescripts were sent to the two Milanese physicists so that they
might give a judgement. G.S. Occhialini and C. Dilworth, in fact, had
personally met Houtermans in 1934 and in 1950. The scenario is that of the role
of nuclear physicists during the WW2. The exchange of letters between Amaldi
and the two Milanese physicists will be analysed in order to identify possible
influences on Amaldi. I will highlight Dilworth's contribution, which found
room in a chapter of Amaldi's biography of Houtermans.
