Draft as revised and edited by Strachey. Most of the sections are dated November-December 1965 or January-February 1966; these are photocopies of editions produced on the CTSS system at M.I.T. and sent by Strachey to Park on 10 and 28 February and 2 and 16 March. (See MS. Eng. misc. b. 269/C.149 for correspondence relating to the production of this draft.)

The table of contents on page 1 of the draft bears manuscript annotations by Strachey to show which sections were missing or needing revision. At a meeting held in Oxford on 24 June 1966 it was agreed 'to make the present second draft of the reference manual available to a restricted audience as a research report from the two Universities'.

It was also agreed that J. Buxton would contribute section 2, D. Park section 9.3 and M. Richards Appendix 1. The typescripts of these sections (dated July 1966) are included in this draft which, annotated and amended by Strachey throughout, became the major part of the 'Working Papers' (MS. Eng. misc. b. 270/C.153).