Comprises:
- C (a-c), Three files of loose material typescripts, reports, routines and miscellaneous correspondence mainly re. Ferranti Mercury computer, c 1959;
- C2, Large folder containing reports, routines etc. concerning computer room, mainly re. Comet Laboratory, c 1961;
- C3, Data Processing by Machine Methods , typescript, 1962;
- C4 (a-b), Folders of miscellaneous material re. KDF9 at Bracknell;
- C5, Meto Mark III. Draft Manual, typescript, c 1965;
- C6, J.M. Craddock, The Users' Manual for the Meto Computer Language, typescript, pp.102, 1966;
- C7, J.M. Craddock, Assessing the Significance of a 3 x 3 Contingency Table, typescript, pp.7 + graphs, [?1966];
- C8, J.M. Craddock and C.R. Flood, Met 0 13 Branch Technical Memoranda No.21: A Computer Language for Statistical Meteorology, typescript, pp.17, 1968;
- C9, J.M. Craddock and C.R. Flood, Users' Digest of the Meto Computer Language (Mark III), typescript, pp.35, 1968;
- C10, Folder of miscellaneous material re. ATLAS, c 1970;
- C11, R.J. Bentham, The Timescale of Project Implementation, typescript, 1974.