Correspondence with publishers regarding paper or monograph, mainly with the editor of Computing Surveys (includes referees' favourable reports and comments.)

Correspondence with Edinburgh University Press, Clarendon Press, Academic Press (1970), North-Holland Publishing Company (1971).

A duplicated copy of the paper appeared in Bulletin No. 1 of I.F.I.P. Working Group 2.2, 20 February 1969 (see MS. Eng. misc. b. 287/E.39).