| Description | Date | Identifier | |
| Letter to Joseph Lucas Ltd. reporting the failure of a windscreen wiper during testing on a Bentley chassis in France. | 22th Apr 1937 | Box 165 \ 1 img037 | |
| Letter from Joseph Lucas Limited regarding a price for a special design Petrol Pump Switch. | 24th Apr 1937 | Box 165 \ 1 img038 | |
| Letter from Joseph Lucas Ltd. regarding Foot Dipper Switches, Electric Horns, and the promised delivery of Headlamps. | 24th Apr 1937 | Box 165 \ 1 img039 | |
| Cover letter to Messrs. Joseph Lucas Ltd. enclosing a copy of another letter. | 26th Apr 1937 | Box 165 \ 1 img040 | |
| Loan of ignition coil cases and a blueprint to Messrs. Lucas for testing purposes. | 29th Apr 1937 | Box 165 \ 1 img041 | |
| Dimmer Switch and a Petrol Pump Switch sent to Messrs. Lucas for examination. | 30th Apr 1937 | Box 165 \ 1 img042 | |
| Letter to Joseph Lucas Ltd. regarding a failed headlamp foot switch and requesting modified replacements for further testing. | 5th May 1937 | Box 165 \ 1 img043 | |
| Arranging the dispatch of an H.T. Cable sample to Messrs Lucas for laboratory testing. | 6th May 1937 | Box 165 \ 1 img044 | |
| Arranging the despatch of Terminal Heads and a Lucas Dimmer Switch to Messrs Lucas for experimentation and repair. | 6th May 1937 | Box 165 \ 1 img045 | |
| Letter from Joseph Lucas Limited discussing a request for high tension cable and coil tops for testing. | 7th May 1937 | Box 165 \ 1 img046 | |
| Pair of brackets for Lucas W.T.13 type horns. | 25th May 1937 | Box 165 \ 1 img047 | |
| Correspondence from Joseph Lucas Ltd regarding a modified Foot Dipper Switch sample and drawing. | 21th May 1937 | Box 165 \ 1 img048 | |
| Technical drawing for a Contact S, first used on a Foot Dipper Switch. | 21th May 1937 | Box 165 \ 1 img049 | |
| Blueprint drawing of a spring component at four times full size. | 21th May 1937 | Box 165 \ 1 img050 | |
| Letter to British Insulated Cables Ltd. regarding a tested cable sample and the return of stock for replacement. | 22th May 1937 | Box 165 \ 1 img051 | |
| Letter to E.A. Watson of Joseph Lucas Ltd. requesting particulars on a Bentley dynamo, 24-volt coils, a Bosch aero magneto, and Beryllium copper springs. | 7th Jun 1937 | Box 165 \ 1 img052 | |
| Advice note from Joseph Lucas Limited for two special engineering samples of an ignition coil. | 8th Jun 1937 | Box 165 \ 1 img053 | |
| Despatch advice note from Joseph Lucas Limited for an M45G 12v Type H starter motor. | 8th Jun 1927 | Box 165 \ 1 img054 | |
| Letter from Joseph Lucas Limited enclosing two Advice Notes for special Engineering Samples. | 8th Jun 1937 | Box 165 \ 1 img055 | |
| Letter from Joseph Lucas Limited regarding an advice note for a 12V starter motor. | 9th Jun 1937 | Box 165 \ 1 img056 | |
| Visit to Messrs. Lucas to discuss faults found in headlamps, horn relays, and a footswitch. | 10th Jun 1937 | Box 165 \ 1 img057 | |
| Issues with horns on a 32-EX model and the performance of coils from Messrs. Lucas. | 11th Jun 1937 | Box 165 \ 1 img058 | |
| Letter from Joseph Lucas Limited regarding an outline drawing for a modified WT13 Wind Tone Horn. | 11th Jun 1937 | Box 165 \ 1 img059 | |
| Letter to Joseph Lucas Ltd. regarding signed Advice Notes and two faulty horn relays. | 11th Jun 1937 | Box 165 \ 1 img060 | |
| Letter from Joseph Lucas Ltd regarding the failure of an FS22-N Dimmer Switch during endurance testing and the plan for improved replacements. | 13th May 1937 | Box 165 \ 1 img061 | |
| Report evaluating the suitability of Lucas supplied electrical equipment, specifically the starter motor and dynamo. | 14th Jun 1937 | Box 165 \ 1 img062 | |
| Use and modification of Lucas electrical components including magnet cases, bearings, and fuse board units. | 14th Jun 1937 | Box 165 \ 1 img063 | |
| Design and sourcing of vehicle electrical components like wiring, switches, and switchboxes. | 14th Jun 1937 | Box 165 \ 1 img064 | |
| Ignition coils, distributors, and utilising Lucas material for electrical equipment. | 16th Jun 1937 | Box 165 \ 1 img065 | |
| Letter to Joseph Lucas Ltd. regarding experimental tests on an FS22/N Foot switch. | 16th Jun 1937 | Box 165 \ 1 img066 | |
| Test report detailing the operational performance and failures of Lucas FS22/N switches. | 16th Jun 1937 | Box 165 \ 1 img067 | |
| The testing, failure, repair, and fitting status of various switches, numbered 4, 5, and 7. | 3rd Jun 1937 | Box 165 \ 1 img068 | |
| Letter to Joseph Lucas Ltd. regarding a proposed new type fuse board and an enclosed sketch. | 18th Jun 1937 | Box 165 \ 1 img069 | |
| Request to instruct for the manufacture of one horn push button, listing the required parts. | 22th Jun 1937 | Box 165 \ 1 img070 | |
| Request to arrange for a horn push button to be sent on loan to Messrs. Lucas for Mr. T. Harris. | 24th Jun 1937 | Box 165 \ 1 img071 | |
| Letter requesting a cost quotation for R.R.12 type ignition coils from Messrs. Lucas Ltd. | 6th Jul 1937 | Box 165 \ 1 img072 | |
| Letter from Joseph Lucas Limited concerning the supply of ignition coils and the status of headlamp orders. | 13th Jul 1937 | Box 165 \ 1 img073 | |
| Letter from Joseph Lucas Limited concerning the dispatch of lamps and querying chassis numbers. | 14th May 1937 | Box 165 \ 1 img074 | |
| Letter to a supplier regarding the inferior quality of high tension cable. | 14th May 1937 | Box 165 \ 1 img075 | |
| Letter from British Insulated Cables Ltd. acknowledging remarks regarding a high tension cable. | 18th May 1937 | Box 165 \ 1 img076 | |
| Letter from a cable manufacturer regarding a sample of H.T. cable and its testing. | 21th May 1937 | Box 165 \ 1 img077 | |
| Advice note from Joseph Lucas Limited for a 12v ER Dynamo and a Manganese Sample. | 21th May 1937 | Box 165 \ 1 img078 | |
| Letter to Joseph Lucas Ltd. regarding a faulty horn, and the testing of new horns and foot switches for a Bentley chassis. | 23th Apr 1937 | Box 165 \ 1 img079 | |
| Letter chasing the delivery of a pair of headlamps with the latest improvements. | 24th May 1937 | Box 165 \ 1 img080 | |
| Request to despatch a pair of brackets for a WT.13 type horn to Messrs Lucas. | 24th May 1937 | Box 165 \ 1 img081 | |
| Letter of complaint to Lucas Ltd. regarding a pair of head-lamp reflectors that are too small in diameter. | 25th May 1931 | Box 165 \ 1 img082 | |
| Letter from Joseph Lucas Ltd. acknowledging receipt of correspondence and advising that Mr. Watson is away. | 8th Jun 1937 | Box 165 \ 1 img083 | |
| Letter to Joseph Lucas Ltd. requesting samples of a starter motor and dynamo for examination. | 14th Jun 1937 | Box 165 \ 1 img084 | |
| Letter from Joseph Lucas Ltd acknowledging a letter from Mr. West and advising of a delay for an experimental system. | 15th Jun 1937 | Box 165 \ 1 img085 | |
| Loan of a Horn Push Button unit to Messrs Lucas for testing. | 25th Jun 1937 | Box 165 \ 1 img086 | |
| Letter to Messrs. Lucas Ltd. urgently requesting six footswitches. | 26th Jun 1937 | Box 165 \ 1 img087 | |
| Letter to Messrs. Lucas Ltd. regarding a fault with two special LR/T regulator units. | 29th Jun 1937 | Box 165 \ 1 img088 | |
| Invoices from Joseph Lucas for various sample switches and a request for payment authorisation. | 13th Aug 1937 | Box 165 \ 1 img089 | |
| Invoice from Joseph Lucas Ltd. for a STXR9A battery on sale or return. | 17th Aug 1937 | Box 165 \ 1 img090 | |
| Battery submitted by Messrs. Lucas for test, to be considered a free sample. | 18th Aug 1937 | Box 165 \ 1 img091 | |
| Arranging for coil cases and heads to be despatched to Messrs. Lucas. | 25th Aug 1937 | Box 165 \ 1 img092 | |
| Letter from Oliver Lucas of Joseph Lucas Ltd. to W.A. Robotham regarding a missed meeting. | 9th Sep 1940 | Box 165 \ 1 img093 | |
| Letter from a supplier discussing the dispatch of electrical components and post-war development. | 19th May 1941 | Box 165 \ 1 img094 | |
| Letter from Joseph Lucas Ltd. enclosing drawings and a catalogue, and discussing the availability of an Ignition Relay Unit. | 21th Jul 1941 | Box 165 \ 1 img095 | |
| Request to arrange a covering order to be issued to Messrs. Lucas Ltd. for a list of parts. | 21th Jul 1941 | Box 165 \ 1 img096 | |
| Confirming the dispatch of blueprints for electrical components for the M.40 Test Rig. | 7th Jul 1941 | Box 165 \ 1 img097 | |
| Request to obtain various electrical units from Messrs. Lucas. | 18th Aug 1941 | Box 165 \ 1 img098 | |
| Letter to Joseph Lucas Ltd. regarding post-war electrical equipment, specifically control boxes, fuses, and horns. | 15th Aug 1941 | Box 165 \ 1 img099 | |
| Request to obtain an A.T. Speedometer for a Bentley Chassis. | 5th Jan 1937 | Box 165 \ 2 img001 | |
| Numerous complaints about defective trip and mileage recorders on A.T. speedometers. | 5th Jan 1937 | Box 165 \ 2 img002 | |
| Malfunctioning trip recorders on A.T. speedometers for two Phantom III cars. | 7th Jan 1937 | Box 165 \ 2 img003 | |
| Letter from the Royal Aircraft Establishment regarding the loan of an H.T. Leakage Indicator for examination and trial. | 13th Jan 1937 | Box 165 \ 2 img004 | |
| Speedometer from car 35-EX which was found to be reading 8% fast and needs returning to the maker for correction. | 15th Jan 1937 | Box 165 \ 2 img005 | |
| The repeated failure of trip recorders on three consecutive new speedometers during long-run testing. | 18th Jan 1937 | Box 165 \ 2 img006 | |
| Requesting the fitting of an A.C. Rev. Counter to chassis 3.B.1V for testing. | 18th Jan 1937 | Box 165 \ 2 img007 | |
| Letter to the A.T. Speedometer Co. Ltd. regarding failures in the trip recorder mechanism and suggesting material and design modifications. | 19th Jan 1937 | Box 165 \ 2 img008 | |
| Letter from The A.T. Speedometer Co. Ltd. discussing modifications to speedometers and instrument parts. | 25th Jan 1937 | Box 165 \ 2 img009 | |
| Letter from A.T. Speedometer Co., Ltd. regarding modifications to fix trip defects and improve zero setting. | 22th Jan 1937 | Box 165 \ 2 img010 | |
| Reporting the fourth failure of a PH.III speedometer trip recorder after 450 miles. | 26th Jan 1937 | Box 165 \ 2 img011 | |
| Speedometer failures due to incorrect materials and increased spring pressure from the supplier. | 26th Jan 1937 | Box 165 \ 2 img012 | |
| Request to A.C. Spinx Sparking Plug Co. Ltd. for a quotation on rev. counters and a sample speedometer for testing on a Bentley chassis. | 27th Jan 1937 | Box 165 \ 2 img013 | |
| Urgent internal request to order a standard Phantom III speedometer for chassis 34-EX. | 1st Feb 1937 | Box 165 \ 2 img014 | |
| Quotation letter from AC-Sphinx for rev. counters and speedometers for a Bentley chassis. | 1st Feb 1937 | Box 165 \ 2 img015 | |
| Letter from AC-Sphinx Sparking Plug Co. Ltd. requesting information for speedometer calibration. | 2nd Feb 1937 | Box 165 \ 2 img016 | |
| Faulty Phantom III speedometer and cable from chassis 38 Ex, requesting their return for repair. | 2nd Feb 1937 | Box 165 \ 2 img017 | |
| Notification regarding incorrect material used for trip rollers in certain A.T. Speedometers. | 3rd Feb 1937 | Box 165 \ 2 img018 | |
| Letter to AC-Sphinx Sparking Plug Co. Ltd. requesting the production of a speedometer for the 25/30 HP chassis. | 3rd Feb 1937 | Box 165 \ 2 img019 | |
| Letter from AC-Sphinx regarding the supply of a sample speedometer and requesting details for the required cable and casing unit for a 25/30 HP chassis. | 15th Feb 1937 | Box 165 \ 2 img020 | |
| Suggesting a material change for the speedometer trip mechanism to improve durability. | 17th Feb 1937 | Box 165 \ 2 img021 | |
| The mileage of various cars fitted with A.T. speedometers with modified trip mechanisms. | 17th Feb 1937 | Box 165 \ 2 img022 | |
| Return of two experimental Smith A.T. Speedometers for modification. | 17th Feb 1937 | Box 165 \ 2 img023 | |
| Correspondence to AC-Sphinx Sparking Plug Co. Ltd. to arrange a meeting regarding speedometers and rev counters. | 17th Feb 1937 | Box 165 \ 2 img024 | |
| The despatch of two speedometers to the makers for modification and marking. | 18th Feb 1937 | Box 165 \ 2 img025 | |
| Requesting an order for speedometers for the Wraith chassis, specifying the required calibration. | 18th Feb 1937 | Box 165 \ 2 img026 | |
| Requesting details for the experimental fitting of an A.C. Speedometer to a Bentley test car. | 23th Feb 1937 | Box 165 \ 2 img027 | |
| Request to arrange for the despatch of a Phantom III speedometer dial on loan to the A.C. Sphinx Sparking Plug Co. Ltd. | 23th Feb 1937 | Box 165 \ 2 img028 | |
| Letter to A.C. Sphinx Sparking Plug Ltd. providing the address of a supplier for Cambridge dials. | 24th Feb 1937 | Box 165 \ 2 img029 | |
| Requesting the return of a Bentley Speedometer for modification to its trip mechanism. | 24th Feb 1937 | Box 165 \ 2 img030 | |
| Loan of a Ph.III Speedometer Dial to A.C. Sphinx Sparking Plug Co., Ltd. | 24th Feb 1937 | Box 165 \ 2 img031 | |
| Requesting the return of a Bentley Speedometer to its makers for modification to the trip mechanism. | 26th Feb 1937 | Box 165 \ 2 img032 | |
| Sending an A.C. speedometer for inspection and arranging for a new instrument with a concave dial. | 2nd Mar 1937 | Box 165 \ 2 img033 | |
| The return of an experimental A.C. Speedometer to the A.C. Sphinx Sparking Plug Co. for correction. | 2nd Mar 1937 | Box 165 \ 2 img034 | |
| Letter to A.C. Sphinx Sparking Plug Co. Ltd. regarding a faulty experimental speedometer with incorrect calibration and poor enamel. | 2nd Mar 1937 | Box 165 \ 2 img035 | |
| Letter from S. Smith & Sons regarding price reductions and design comparisons of A.T. and Smith instruments. | 2nd Mar 1937 | Box 165 \ 2 img036 | |
| Letter to S. Smith & Sons regarding the superior performance and lower cost of a competitor's speedometer. | 3rd Mar 1937 | Box 165 \ 2 img037 | |
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