A file of miscellaneous letters and documents from various companies sent to and from J. Lyons & Company Ltd and LEO Computers Ltd. Features advertisements, contract updates, acknowledgements, invoices, receipt of cheques, and requests for information.  

File contains the following items:
- Road Locomotive Society letterhead for Joseph L. Thomas
- The "Sentinel" Register letterhead for Joseph L. Thomas
- Letter from Oswald Hanson & Smith about the receipt of J. Lyons & Company Ltd.'s cheque in relation to Olympia licence, dated 11th Dec 1930
- Letter from the Leeds & District Property Owners & Ratepayers' Association asking for details of a computer consultant, dated 14th Jan 1964
- Letter from Campbell Brushes advertising their products and services, dated 23rd Aug 1963
- Letter from the Royal Trust Company of Canada advertising their pension and insurance services, dated 26th Mar 1963
- Letter from Cerebos acknowledging information sent and enquiring with insurers, dated 5th Mar 1963
- Letter from LEP Transport enclosing forms to be completed and returned, dated 7th Feb 1963
- Letter from the Traders & Manufacturers Register advertising a listing in their French, German and Italian versions of the Traders and Manufacturers Directory, dated 3rd Jan 1963
- Letter from De La Rue Bull Machines enclosing the maintenance agreement between De La Rue Bull Machines and Ford Motor Co. for signing, dated 9th Jan 1963
- List of international tariff costs for telegrams from the Western Union Telegraph Company
- Blank order form from SELL'S Registered Telegraphic Addresses
- Letter from Selfridges requesting a signature on enclosed cheque for return, dated 8th Jan 1963
- Letter from Tate Emes & Company enclosing a form for credit insurance, undated
- Letter from A. W. Gamage requesting the address of Mr E. A. Housden, dated 24th Aug 1962
- Letter from F. R. Bullen & Partners requesting information about Cleaners Ltd., dated 14th Aug 1962
- Letter from Engineering Finance regarding J. Lyons & Co.'s interest in their scheme, dated 17th Jul 1962
- Letter from the Electrical Trades Directory advertising a listing in their 1963 edition, undated
- Letter from the Scottish Widow's Fund & Life Assurance Society advertising their pension services, dated 29th May 1962
- Letter from Stroud Bros. advertising their floral display services, dated 28th May 1962
- Specimen sheet for the Post Office London Directory with entry for LEO Computers Ltd. (blue text)
- Specimen sheet for the Post Office London Directory with entry for LEO Computers Ltd. (red text)
- Letter from the Federation of British Industries advertising their services and membership, dated 30th Apr 1962
- Letter from the Metropolitan Water Board about two "Gloster Machines" installed at Minerva Road still being under test, dated 1st May 1962
- Letter from J. Lyons & Company Ltd. enclosing a timetable for the production of consolidated accounts and requests for information, dated 23rd Feb 1962
- Bot. of Singleton & Cole invoice sheet, dated 5th Jan 1923
- Maypole Dairy Co. invoice sheet, dated 2nd Feb 1923
- Brooke Bond & Co. invoice sheet, dated 11th Feb 1923
- The Central Agency invoice sheet, dated 1st Feb 1923
- Letter from John Tyzack & Partners introducing their new system of payments, dated 31st Mar 1962
- Letter from Ayrshire General Investment Co. regarding Mr Brian Haskell's tenancy application, dated 26th Mar 1962
- Letter from Stringer Contracts advertising their vehicle services, dated 27th Mar 1962
- Letter from Pergamon Press advertising a listing in their Office Productivity Data Annual, dated Oct 1961
- Invitation from Rank-Xerox to attend a demonstration of Xerography, undated
- Letter from Friends' Provident and Century Life Office advertising their accident and illness insurance services, dated 9th Mar 1961
- Letter from Office Equipment News requesting enclosed form be filled and returned, dated 16th Feb 1961
- Letter from Ascotts requesting the address of Hans Koegler, dated 14th May 1959
- Letter of thanks from Lamson Paragon, dated Sep 1960
- Letter from Lamson Paragon regarding increase in rentals, dated 26th Aug 1960
- Letter from the Northern Ireland Development Council advertising their building services, dated 13th Jun 1960
- Letter from the Federation of British Industries requesting a meeting and enclosed leaflet, dated 12th Feb 1960
- Letter from Moss & Partners advertising their property services, undated
- Letter from the Post Office Official Telephone Directories advertising a listing in their directory, dated 25th Sep 1959
- LEO Computers letterhead
- Letter from the Mercantile Credit Company replying to letter about financing a contract with Watson Victor Ltd., dated 19th June 1959
- Letter from Whiteleys regarding quotations for tea and coffee services, dated 26th Jun 1959
- Letter from Bridge Advertising Service advertising their advertising services, dated 16th Jun 1960
- Blank LEO Computers identity card
- Letter from Bartlett & Gluckstein regarding increase of capital for LEO Computers, dated 27th Apr 1959
- Letter from Standard Telephones and Cables regarding the termination of LEO Computers' agreement with the British Radio Valve Manufacturers' Association, dated 24th Mar 1959
- Letter from White Druce & Brown regarding the disposal of the leasehold interest for Victoria Works, dated 23rd Jan 1959
- Letter from the NIG Manufacturing Co. regarding agreement forms for hiring phot-printing equipment, dated 17th Nov 1958
- Letter from the British Radio Valve Manufacturers' Association regarding LEO Computers' Minerva Road address, dated 28th Nov 1958
- Letter from the United Dominions Trust advertising their financial services, dated 5th Jul 1957
- LEO Computers order form (LA)
- LEO Computers order form (LPU)
- Letter from LEO Computers to C. D. Ewart explaining that electronic computers have not yet been applied to homoeopathic remedies, dated 10th May 1957
- Letter from Office Appliance and Business Equipment Trades Association confirming receipt of letter about J. C. Masters acting as deputy to G. J. Mills, dated 30th Jul 1957
- Letter from the Phonotas Company advertising their telephone sterilising service, dated 4th Dec 1956
- Letter from the Metropolitan Water Board about the meter at Minerva Road no longer being in use, dated 25th Mar 1957
- Letter from Alliance Assurance Company enclosing a copy of a letter from the Salisbury Branch of Lujeri Tea Estates, dated 31st Jan 1957
- Letter from J. Lyons & Co. to Brownlie & Murray regarding their expenses claim, dated 1st Mar 1928
- Letter from Lujeri Estates enclosing signed forms, articles of association and a balance sheet, dated 25th Nov 1927
- Letter from Olympia confirming receipt of letter and hearing nothing about the notice of High Constable of Kensington, dated 17th Jan 1930
- Letter from [J. Lyons & Co.] to the Lujire Estate regarding company ordinance, dated 27th Oct 1927
- Letter from Lichenya Tea Estate concerning visit to London and hopes to meet Mr Salmon, dated [10th] Nov 1926

Provenance :
Collected by Peter Bird as part of his research for his book LEO - The First Business Computer (1994).