This was the fourth in a series of International Seminars in Computing Science sponsored by I.B.M. and the University of Newcastle, held in Newcastle, 7-10 September 1971. Strachey had intended to participate but a change in scheduling of his lectures in Denmark (see MS. Eng. misc. b. 299/H.29) made it impossible for him to attend.

Correspondence regarding travel and conference arrangements, programme, and lists of participants and speakers.

Folder also includes invitations to attend the 1969-1970, 1972-1974 Seminars. (Strachey did not attend any of them.)