Scientific Correspondence between David J. Thouless and Others, 1983 Contains the following correspondence: Correspondence from Jeffrey Sokoloff concerning proof of the bound on the band-width for the square lattice in a magnetic field problem - dated 3 January to 19 July 1983. Correspondence to Dr. Mahito Kohmoto concerning preprints and spectrum width - dated 17 February 1983. Correspondence to Dr. E. Siggia and Dr. S. Stellan concerning preprint on the almost periodic Schrodinger problem - dated 18 February 1983. Correspondence to and from Dr. I. Dana concerning Dana's papers with Zak - dated 10 March and 30 May 1983. Correspondence to and from Dr. Yosi Avron concerning time reversal invariance - dated 29 March to 27 July 1983. Correspondence sent to Dr. H. Kunz concerning a preprint on the solution for the Lloyd model, with manuscript notes by Thouless - dated 11 April 1983 to 8 June 1983. Correspondence to and from Dr. Allan MacDonald concerning revised paper and method for triangular lattice - dated 1 June to 20 October 1983. Correspondence from Professor Henn H. Soonpaa with attached copy of preprint on 'Single-parameter scaling in thin crystals' - dated 7 June 1983. Correspondence sent to Professor B. Simon concerning Johnston and Kunz's paper - dated 8 July to 5 October 1983. Correspondence from Robert Johnston concerning Thouless' 'Localization in the Lloyd model' - dated 26 July to 16 August 1983. Correspondence to and from Dr. Rongjia Tao concerning Tao's paper - dated 13 September to 11 October 1983. Correspondence to and from Dr Angus MacKinnon concerning calculations on the Lloyd model - dated September 1983. Correspondence to and from Dr. T. Odagaki concerning work completed by Thouless and S. Kirkpatrick - dated 29 August to 3 October 1983. Correspondence to and from Dr. I.Z. Kostadinov concerning a preprint - dated August to 8 November 1983. A series of stapled correspondence from Thouless to Professor Jackiw concerning a paper by Jackiw and Rebbi with comment on fractional charge and fractional Quantum Hall - dated 14 September to 21 November 1983. Correspondence sent to Dr. Q. Niu concerning many-body state - dated 25 November 1983. 1983