Comprises:
- 1, Computers, Agricultural Research Council, Pocket, agreements, 1954-1955;
- 2, Computers, Rothamsted, Research for Development (BTM), correspondence, 1954;
- 3, Transfer of Elliot 401 Computer to the Science Museum, correspondence, 1965;
- 4, Computers, Peat, Marwick, Mitchell & Co, correspondence, 1954;
- 5, Computers, US Government, correspondence, 1950- 1951;
- 6, Computers, US National Bureau of Standards, Conveyances In, correspondence, 1950;
- 7, Computers (405) Elliott Bros, Vol 1, correspondence, 1956-1958;
- 8, Computers (405) Elliott Bros, Vol 2, correspondence, 1958-1959;
- 9, Computers (405) Elliott Bros, Vol 3, correspondence, 1960-1966;
- 10, Computers (405) Elliott Bros, Pocket, report with drawings, 1959.