The items in this file are mostly concerned with Institute matters and current research problems. The following topics are also discussed in certain letters: parity violation (1957-03-12 and 1957-03-20), Heisenberg's exaggerated propaganda his new theory of elementary particles (1958-03-04), a copy of a letter to Landau from Moscow (1958-03-11) and a circular letter explaining why Pauli withdrew his participation in Heisenberg's publication (see also landau_0339), further comments from Pauli on this to Enz (1958-14-03).