Scientific Correspondence received by David J. Thouless, from 'Phil', 'Nevill' and 'Dennis' Contains the following correspondence: Correspondence received by Thouless from 'Phil' [likely P.W. Anderson] concerning calculations and the Cayley tree. Correspondence received by Thouless from 'Dennis' [from prior correspondence, could be Dennis Weaire] concerning a draft copy of a paper, containing two-dimensional results. Correspondence received by Thouless from 'Nevill' [likely Professor Sir Nevill Mott] concerning metallic conductivity, fluctuation of density and formulae. [1970s-1990s]