Comprises:
- 1, Computers Electronic, Manchester University: Computer Research Corporation, 1951;
- 2, Computers Electronic, Manchester University: Burroughs Adding Machine Co, 1951;
- 3, Computers Electronic, Manchester University: Bendix Ltd, 1951;
- 4, Computers, Intelectron, De Florez, 1951;
- 5, Electronic Computers, Manchester University, Plessey Ltd, 1951;
- 6, Computer, Mullard Ltd, 1953;
- 7, Computers, Epsylon Development Magnetic Tape, File No. 1, 1955;
- 8, Computers, Epsylon Development Magnetic Tape, File No. 2, includes specifications, 1956-1958;
- 9, Computers, Epsylon Development Magnetic Tape, File No. 3, 1958-1968;
- 10, Electronic Computers: Manchester University, Ridenour Ltd, Patent Option, 1952;
- 11, Manchester Computer, Manchester University (Halcrow & Partners) User Enquiries, 1952;
- 12, Manchester Computer, Manchester University: Head Wrightson Ltd, User Enquiries, 1952;
- 13, Computer, British Electricity Authority, 1953;
- 14, Electronic Computers, Manchester University: MIT, Related Projects, 1952;
- 15, Electronic Computers, Manchester University: MIT Related Projects, copy of Scientific American, September 1952;
- 16, Electronic Computers, Manchester University: Toronto University Development, 1952-1953.