A file of working papers and correspondence relating to changing over from LEO II to LEO III, comprised of:

1. A memo from Mr Simmons to Mr Wills titled 'LEO Jobs and Planning', 15 May 1962
2. A memo from Mr Beasley to Mr Stevens titled 'LEO II', 6 March 1967
3. A memo from Mr Stevens to Mr Beasley titled 'LEO II' relating to the closing date of LEO II, 3 March 1967
4. A memo and attached diary note titled 'Life of LEO II' from Mr G. F. Stevns to Mr Beasley and Mr King, 24 January 1966
5. A memo from Mr king to Programming Managers relating to preparing data on LEO III for input to LEO II, 26 July 1965
6. Draft notes titled 'LYONS MASTER BUSINESS PLAN AND LEO MODEL'
7. Handout titled 'BINARY POWERS IN DECIMALS', signed by Alan King. Also includes handwritten notes titled 'Binary Fractions'
8. A handout titled ' RULES FOR PROGRAMME MODIFICATIONS'
9. A handout titled 'GENERAL DETAILS OF LEO II'
10. A flowchart titled 'B12 Flowchart (Simplified Version)', 17 September 1955
11. A punch card and worksheet titled 'Negative check total Programme'
12. A manuscript handout relating to 'First Weighing, Second Weighing and Third Weighing'
13. Manuscript on computer paper titled 'C/I No. Data Type, New Value'
14. A bundle of blank worksheets
15. A bundle of handout titled 'LEO - TUBE AND COMPARTMENT READY RECKONER'.

Provenance :
Collected by Alan King and donated to the LEO Computers Society