LEO editor

Aims are to collect, restore and exhibit all types of early Computers
Electronics and associated peripherals. Their collection includes some LEO circuit boards.
We hope that our website will give an insight to the development of computing and will help give inspiration to other people to collect rather than throw out historical electronics. We also would like to make a record of peoples experiences of early Computing and Electronics primarily from Scotland and the North of England but also from Great Britain generally. If you have any experiences of early computing or Electronics please don’t hesitate to contact us at contact@t-Icarvive.org

See also
https://t-lcarchive.org

has collected technical and other background
Information about all early UK computers including LEO. It holds monthly meetings at
the British Computer Society Headquarters in London at which various aspects of its
activities are presented. See http://www.ourcomputerheritage.org/ and
http://www.ourcomputerheritage.org/ A website is devoted to the UK Computer
Heritage and includes information about the origins of LEO and summaries of the LEO
range. Our Computer Heritage

The LEO record is incomplete and further technical information would be
welcomed by the CCS. The CCS also maintains an index of documents relating to LEO including a complete listing of the Pinkerton papers held at the Science Museum
http://sw.ccs.bcs.org/iclarch/arch01.htm and 65 technical drawings including two
patent applications http://sw.ccs.bcs.org/iclarch/arch06.htm

has established an archive search facility of computing history websites. The link to the search facility is http://www.ithistory.org/search/site/
Searching LEO brings up http://www.ithistory.org/search/site/Leo with many LEO
entries.

John Simmons Papers (1924-1994), Ref: GB 152 GB 152 MSS.363,
https://archiveshub.jisc.ac.uk/search/archives/80e05c8d-6acf-3e84-8999-1a9a8321cad5.
See John Simmons Archive at Warwick University Modern Records Centre Showcase:
Pioneers: Innovators in Science and Technology
http://www2.warwick.ac.uk/services/library/mrc/explorefurther/images/pioneers/ for a
number of items on LEO, now digitised, see
www.warwick.ac.uk/services/library/mrc/explorefurther/digital/leo
Boxes of manuscripts from David Caminer and John Aris are catalogued at

http://mrc-catalogue.warwick.ac.uk/records/ARI/2 Note (April 2019) 9 boxes have been
transferred to Cambridge Centre for Computer History as part of HLF project. For full
list see LEOPEDIA annex

The Jim Austin Computer Collection is a preservation of over 500 machines from
small micros to mainframes and super computers. Some of the items can be seen on
the web site http://www.computermuseum.org.uk/ . The Collection acquired some
LEO III items in July 2012. Visitors are welcome on request

http://www.shadyoldlady.com/location.php?loc=617 notes the site of the First
Business Computer at Cadby Hall with a short piece about the origins of LEO

Internet Scripophily Museum of Computing (ISMOC), a virtual museum created
by Franky Leeuwerck on computing history represented by bond and share
certificates. In 2017 J. Lyons and LEO Computers were added to the website with a
chronology of the LEO story. See Internet Scripophily Museum of Computing

Neville Lyons – descendent of the original Joe Lyons gave a series of public lectures
on the History of the Lyons Company and on LEO Computers. Information about the
8th June 2016 lecture can be found at https://www.eventbrite.co.uk/e/the-joe-lyonsstory-food-for-thought-tickets-24424562524# and for the 22nd June 2016 lecture at
https://www.eventbrite.co.uk/e/the-story-of-leo-the-worlds-very-first-business–computer-tickets-24424811268# X

There is a u3a plan for my zoom talk on the Joe Lyons Story for 23rd March, to
be followed hopefully with LEO talk later on. Publicity for JL talk is now on u3a
website including full synopsis that I sent them. See www.u3a.org.uk/events

Institute of Administrative Management (IAM), started life in 1915 as Office
Machinery User’s Association. John Simmons acted as chair and president for many
years and some of its members including Wills were early LEO users. Its journal
includes two articles on the history of IAM including many references to John
Simmons and the Lyons/LEO story. See Gibson in previous section.