Includes negotiations regarding consultancy, signed Agreement for 'the preparation of an autocode for scientific work on the Orion Computer', schedule and provisional outline of a report on Orion Autocode November 1961-June 1962, termination of consultancy as from November 1962.

Miscellaneous correspondence regarding despatch of manuals and company literature, company conferences, etc. Includes correspondence regarding data transmission links.

Folder of correspondence exchanged with P. Landin as Strachey's assistant with responsibility for Orion Autocode. Includes technical correspondence, invitations to and reports on conferences or meetings attended by Landin vice Strachey, comments on drafts of proposed manuals, and notes by Strachey and Landin for their Autocode Manual, September-October 1961.

Mainly duplicated papers, notes of meetings, etc. on Mercury Autocode and its extension to programs for Orion and Atlas. Includes papers and Autocode Bulletins 1-3 by R.A. Brooker, and Ferranti papers: 'Extended Mercury Autocode on Orion and Atlas', November 1961, and 'Addendum' to above, February 1962.

Miscellaneous manuscript and typescript notes and working papers for programs on Orion project (not in Strachey's hand). Some dated.

Departmental memoranda, technical notes; minutes and notes of meetings and discussions on various aspects of Orion design, extension of Mercury autocode to Orion, etc. attended by Strachey or sent to him for information.

Departmental memoranda, technical notes; minutes and notes of meetings and discussions on various aspects of Orion design, extension of Mercury autocode to Orion, etc. attended by Strachey or sent to him for information.