Scientific Correspondence between David J. Thouless and Others, 1963-1966 Contains the following correspondence: Correspondence to and from Ebbe Nyman; concerning Nyman's thesis - dated 2 January 1963. Correspondence to and from Professor J.M. Luttinger; concerning one- and two-particle Green's function, - dated 2 January 1963 to 22 April 1963. Correspondence to and from Dr. Phil W. Anderson; concerning a talk delivered by Garwin in 1963, double projection method for collective motion, - dated 14 January 1963 to 28 May 1966. Correspondence to and from Gerald E. Brown; concerning conservation of particles - dated 5 February 1963 to 8 March 1963. Correspondence to and from Professor R.E. Peierls; concerning a thesis paper - dated 8 February 1963 to 13 February 1963. Correspondence to Dr. J.A. (Tony) Evans; concerning particle conservation with calculations added - dated 22 February 1963 to 29 July 1964. Correspondence to Dr. Lewis H. Nosanow; concerning Nosanov's preprint on 'Superfluidity in Fermi Systems with Attraction in Partial Waves of Nonzero Angular Momentum', general Bogoliubov transformation, - dated 21 February 1963. Correspondence to and from Dr. Marvin Giradeau; concerning motion of hard spheres in one dimension - dated 22 April to 29 April 1963. Correspondence to and from Professor Karl-G. Fogel; concerning a short resume by Ostman, - dated 18 May 1963 to 7 June 1963. Correspondence from Eero Byckling; concerning experimental specific heat data - dated 8 March to 8 May 1964. Correspondence from Jeremy Hayward; concerning calculations and computation for different exchange parameters - dated July 1964. Correspondence to and from Dr. Baird Brandow; concerning Block-Morowitz formalism, - dated 28 August 1964 to 26 October 1965. Correspondence to Dr. M.E. Fisher; concerning Byckling's paper, and the structure of vortex lines - dated 9 October 1964. Correspondence from Michael Richards; concerning the findings of research on solid He3 - dated 4 January 1965. Correspondence to and from Dr. Erich W. Vogt; concerning unbound deuterons - dated 12 February to 5 March 1965. Correspondence from J. Hatten; concerning Thouless' paper on He3 - dated 24 May 1965. Correspondence to Professor C. Kittel; concerning a paper Thouless' wrote on statistical mechanics of the strong coupling limit of the theory of conductivity - dated 17 June 1965. Correspondence to and from Dr. Yosuke Nagaoka; concerning the possibility of ferromagnetic ground state for a system of s-electrons - dated 8 September to 15 September 1965. Correspondence to Professor Abraham Klein; concerning linked-cluster expansions with calculations - dated 25 October 1965. Correspondence from Dick Mattuck; concerning Mattuck's book - dated 24 February 1966. Correspondence sent to Dr. Walter Marshall concerning his Ph.D. thesis on solid He3 and Heisenberg antiferromagnet - dated June 1966. Correspondence between Thouless and Dr. G.F. Hammel concerning a talk Thouless did not manage to deliver in Moscow and irrotational flow theory - September to October 1966. Short manuscript note from George Stall concerning an equation - undated. January 1963-October 1966