LEO Asst. Editor

Agar J., (2003), The Government Machine. A Revolutionary History of the Computer, MIT Press. Pages relating to LEO: pp. 266, 302–306, 314, 325, 421

Ahmed, Haroon (2013) ‘Cambridge Computing – The First 75 Years’, TMI Publishers.

Anon, (1962), Automatic Programming Languages for Business and Science, a two-day conference held at Northampton College of Advanced Technology with the co-operation of the BCS.in April 1962. T.R. Thompson presented a paper on considering the fundamental principles for expressing a procedure for a computer application independently of any compiler or computer considerations. The Conference papers are reviewed by LEO’s J. Caldwell.

Anon (2011) ‘ICL Mainframe Computers’, Books LLC.
This 19 page pamphlet gives a brief description of a number of UK designed and manufactured computers including the LEO range, pages 18 and 19. All the texts are lifted from Wikipedia entries and include some errors made in these entries.

Arms, William Y, (2019), Early Years of Academic Computing, Cornell University, Internet University Press. The memoirs include a brief account of the LEO story including a photo of LEO III. See http://www.cs.cornell.edu/wya/AcademicComputing/text/titlepage.html

Baker, Rob (2015) ‘Beautiful Idiots and Brilliant Lunatics: A sideways look at twentieth century London’, Amberley Publishing Limited. Chapter 22 includes the story of Lyons and its place in London, and notes its role in the development of LEO and business computing. See Google Books

Bird, P. (2000) ‘The First Food Empire: A History of J. Lyons and Company’, Phillmore.
Peter Birds account of the history of J. Lyons including a reference to the LEO initiative.

Bruderer, H. (2015) ‘Meilensteine der Rechentechnic (Milestones in Computer History)’, De Gruyter Oldenbourg, Berlin/Boston. This 820-page book written in German has a number of references to LEO throughout the book. The author is a Swiss academic.

Bruderer, Herbert: Milestones in Analog and Digital Computing, Springer Nature Switzerland AG, Cham, 3rd edition 2020, 2 volumes, 2113 pages, 715 illustrations, 151 tables, English
version. https://www.springer.com/de/book/9783030409739

Campbell-Kelly, M. (1989) ‘ICL A Business and Technical History’, Clarendon Press, Oxford.
The history of ICL is synonymous with the history of the British computer industry. ICL was formed by a series of mergers in response to the increasing market dominance of the large American corporations, particularly IBM. The struggles between these two giants and the inherent problems and implications of competing with US multi- nationals are examined in detail in Campbell Kelly’s wide-ranging study. At the time of writing in the late 1980s, the author was given unrestricted access to ICL archives and his lucid account of the company, its set-backs and successes makes for a compelling and informative read. This book, which was Winner of the Wadsworth Prize for Business History (1989), will be of great interest to anyone involved in business or the computing industry.

See Google Search