| Description | Date | Identifier | |
| Letter to Joseph Lucas Ltd. regarding the trial of dynamos, pulleys, and lamps for a new experimental chassis. | 23th Jul 1919 | Box 61a \ 1 scan0052 | |
| Letter from Joseph Lucas Ltd regarding the silencing of dynamos, samples of side lamps, and specifications for lighting and starting cables. | 25th Jul 1919 | Box 61a \ 1 scan0053 | |
| Letter from Joseph Lucas Ltd. regarding the despatch of various cables and a sample fitting. | 30th Jul 1919 | Box 61a \ 1 scan0054 | |
| Request to supply nickel-plated brackets for Lucas Electric Head Lights for chassis 21 CW and 46 CW. | 24th Oct 1919 | Box 61a \ 1 scan0055 | |
| Letter from The Lucid Lamp Co. Ltd. regarding fitting their Non-Dazzle Shades to car lamps for an exhibition. | 3rd Nov 1919 | Box 61a \ 1 scan0056 | |
| Product advertisement for 'The Lucid' Non-Dazzle Shade for lamps. | 4th Nov 1919 | Box 61a \ 1 scan0057 | |
| Car's delayed requirement, a new parts list, and an inquiry into earthed wiring lamp systems. | 12th Dec 1919 | Box 61a \ 1 scan0058 | |
| Letter from The Chloride Electrical Storage Co. Ltd. enclosing a booklet and pamphlet about hand lamps. | 15th Jan 1920 | Box 61a \ 1 scan0059 | |
| Letter from the Lucid Lamp Company offering to fit their Non-Dazzle Shades for a trial. | 25th Feb 1920 | Box 61a \ 1 scan0060 | |
| Article from 'The Motor' magazine showing various anti-dazzle headlamp devices tested. | 31th Mar 1920 | Box 61a \ 1 scan0061 | |
| Article on increasing factory production outputs and a section with news from various motoring clubs. | 31th Mar 1920 | Box 61a \ 1 scan0062 | |
| Article from 'The Motor' magazine about comprehensive and instructive tests of modern anti-glare devices. | 31th Mar 1920 | Box 61a \ 1 scan0063 | |
| Article from 'The Motor' magazine describing a custom-built, camouflaged Ford called 'The Maiflower 20'. | 31th Mar 1920 | Box 61a \ 1 scan0064 | |
| The receipt of batteries, lamps, and a speed indicator from various suppliers. | 16th Jun 1920 | Box 61a \ 1 scan0065 | |
| Instructions for connecting lamps to earth for chassis 6 EX. | 23th Jun 1920 | Box 61a \ 1 scan0066 | |
| Internal discussion regarding the challenges and risks of standardizing an earthed electrical wiring scheme for cars. | 20th Jul 1920 | Box 61a \ 1 scan0067 | |
| Page discussing the issue of customers obtaining suitable lamps and accessories for earthed wiring. | 24th Aug 1920 | Box 61a \ 1 scan0068 | |
| The twelve-volt lighting system, comparing single wiring with an earth return versus a standard double wiring system. | 26th Jul 1920 | Box 61a \ 1 scan0069 | |
| Options for future electrical equipment and wiring diagrams for a car. | 26th Jul 1920 | Box 61a \ 1 scan0070 | |
| Incandescent lamps for 12 and 24-volt circuits and the implications of single versus two-wire electrical systems. | 26th Aug 1920 | Box 61a \ 1 scan0071 | |
| Headlight dimmers, forwarding copies of document Oy5-G61120 for a report. | 25th Nov 1920 | Box 61a \ 1 scan0072 | |
| Cover letter requesting a report on headlight dimmers, referencing an attached letter from America. | 26th Nov 1920 | Box 61a \ 1 scan0073 | |
| Letter discussing headlight dimmer requirements for American cars being sent to England and proposing lighting combinations. | 6th Nov 1920 | Box 61a \ 1 scan0074 | |
| Letter to Mr. C Johnson discussing two methods of headlight wiring for potential use on a new switch box. | 6th Nov 1920 | Box 61a \ 1 scan0075 | |
| Report on headlight dimmers. | 26th Nov 1920 | Box 61a \ 1 scan0076 | |
| Letter regarding headlight and sidelight configurations for cars being exported to England, addressing differences in regulations. | 6th Nov 1920 | Box 61a \ 1 scan0077 | |
| Letter discussing various methods for dimming headlights and their potential implementation in a new switch box. | 6th Nov 1920 | Box 61a \ 1 scan0078 | |
| Opinion on headlight dimmers in order to frame a report. | 26th Nov 1920 | Box 61a \ 1 scan0079 | |
| Letter discussing headlight dimmers, lighting regulations and the differences between American and English car specifications. | 6th Nov 1920 | Box 61a \ 1 scan0080 | |
| Alternative headlight wiring methods for a new switch box. | 6th Nov 1920 | Box 61a \ 1 scan0081 | |
| Requesting a report in triplicate regarding headlight dimmers. | 26th Nov 1920 | Box 61a \ 1 scan0082 | |
| Letter discussing headlight dimmers and lighting combinations for American cars being sent to England. | 6th Nov 1920 | Box 61a \ 1 scan0083 | |
| Letter discussing options for headlight wiring, comparing them to schemes on Buick and Marmon cars. | 6th Nov 1925 | Box 61a \ 1 scan0084 | |
| Merits and complications of various methods for dimming head lights. | 7th Dec 1920 | Box 61a \ 1 scan0085 | |
| Recommendation to use a series-parallel switch as the simplest method for reducing headlight brightness. | 17th Dec 1920 | Box 61a \ 1 scan0086 | |
| Letter to Rolls-Royce of America Inc. regarding head light dimmers and enclosing a memo. | 8th Dec 1920 | Box 61a \ 1 scan0087 | |
| Requirement for a headlamp dimming device after an unsuccessful trial. | 10th Jan 1922 | Box 61a \ 1 scan0088 | |
| Requesting the forwarding of second-hand Lucas headlamps for a Hawk-Northcliffe chassis. | 10th Jan 1921 | Box 61a \ 1 scan0089 | |
| Proposing a trial of a series-parallel switch as a dimming device for headlamps. | 11th Jan 1921 | Box 61a \ 1 scan0090 | |
| Agreed-upon scheme for a headlamp dimming device using a single resistance. | 13th Jan 1921 | Box 61a \ 1 scan0091 | |
| The availability of drawings for headlamp dimmers. | 19th Jan 1921 | Box 61a \ 1 scan0092 | |
| Letter from Mr. Olley regarding two head lamp dimmers being made for inspection. | 20th Jan 1921 | Box 61a \ 1 scan0093 | |
| Drawings for headlamp dimmers and attaching a letter from America on the subject. | 20th Jan 1921 | Box 61a \ 1 scan0094 | |
| Letter from Rolls-Royce of America discussing headlamp dimmer schemes and arrangements to meet both English and American requirements. | 3rd Jan 1921 | Box 61a \ 1 scan0095 | |
| Arrangement of headlamp dimmers and side lamps for incorporation into the Goshawk II. | 21th Jan 1921 | Box 61a \ 1 scan0096 | |
| Dimmers for headlamps and requesting the status of drawings for new lamps. | 21th Feb 1921 | Box 61a \ 1 scan0097 | |
| Confirming that the drawings for headlamp dimmers have been received by 'American'. | 22th Feb 1921 | Box 61a \ 1 scan0098 | |
| Seeking clarification about the need to send drawings for headlamp dimmers. | 28th Feb 1922 | Box 61a \ 1 scan0099 | |
| Decision not to send drawings related to headlamp dimmers in response to a previous letter. | 1st Mar 1921 | Box 61a \ 1 scan0100 | |
| Questioning the reasons for not sending drawings for headlamp dimmers to America. | 2nd Mar 1921 | Box 61a \ 1 scan0101 | |
| Discussion concerning headlight dimmers and side lamp placement for the American market, prompted by customer complaints and local parking laws. | 3rd Mar 1921 | Box 61a \ 1 scan0102 | |
| Procurement of a C.A.V. dimmer switch and cut-out. | 31th Mar 1921 | Box 61a \ 1 scan0103 | |
| Experimental head lamp dimming devices and suggesting the matter be put on hold. | 19th Apr 1921 | Box 61a \ 1 scan0104 | |
| Review of two head light dimming devices, a C.A.V. series parallel switch and a 'REX' head light controller. | 22th Apr 1921 | Box 61a \ 1 scan0105 | |
| Methods for dimming headlamps, comparing series-parallel switches with a 'Rex' lamp controller. | 22th Apr 1921 | Box 61a \ 1 scan0106 | |
| Test report on the 'REX' headlight controller, detailing its resistance and performance with various lamp configurations. | 15th Apr 1921 | Box 61a \ 1 scan0107 | |
| Correspondence regarding a Lucas switch for rewiring double side lamps, noting its prominent branding and large flange. | 12th May 1921 | Box 61a \ 1 scan0108 | |
| Sample switch for controlling double side lamps, including supplier discussions. | 24th May 1921 | Box 61a \ 1 scan0109 | |
| Analysis of the resistance of a dimmer switch from T.H. Gill & Sons and its suitability for dimming lamps. | 6th Jun 1921 | Box 61a \ 1 scan0110 | |
| Examination of two sample dimming switches and a recommendation for an alternative 'Rex Head Lamp Controller' type. | 7th Aug 1921 | Box 61a \ 1 scan0111 | |
| Extract from a conference minute regarding suggestions by Lucas for out-of-date lamps and lamp fittings. | 13th Jun 1921 | Box 61a \ 1 scan0112 | |
| Extract from a conference meeting discussing dynamo brushes, the Goshawk II, and a concealed cable lamp bracket. | 22th Jun 1921 | Box 61a \ 1 scan0113 | |
| Correspondence with Lucas Electrical Co. Ltd. regarding concealed cable lamps for Mr. Royce. | 22th Jul 1921 | Box 61a \ 1 scan0114 | |
| Instruction note regarding the receipt of a dimming switch from the British & Allied Electrical Agency, Ltd. | 21th Jul 1921 | Box 61a \ 1 scan0115 | |
| Rejecting a sample headlamp dimmer switch from British & Allied Electrical Agency Ltd. | 4th Aug 1921 | Box 61a \ 1 scan0116 | |
| Quotation letter from British & Allied Electrical Agency Ltd. for various types of 'LOWA' patent dimming switches. | 12th Jul 1921 | Box 61a \ 1 scan0117 | |
| Newly advertised Lucas head lamp dimmer switch as a potential alternative to the 'Rex' controller. | 28th Sep 1921 | Box 61a \ 1 scan0118 | |
| Satisfactory trial of a Lucas headlamp dimmer switch. | 8th Oct 1921 | Box 61a \ 1 scan0119 | |
| Request to receive a Lucas Head Light Dimmer for examination. | 11th Oct 1921 | Box 61a \ 1 scan0120 | |
| Unsatisfactory Lucas Head Light Dimmer, with a sample enclosed for examination. | 11th Oct 1921 | Box 61a \ 1 scan0121 | |
| Instruction sheet detailing the construction and resistance of a Lucas Headlight Dimmer. | 14th Oct 1921 | Box 61a \ 1 scan0122 | |
| Test results for Lucas Headlight Dimmer current measurements under various lamp configurations. | 6th Nov 1918 | Box 61a \ 1 scan0123 | |
| Bench testing of a sample Lucas head light dimmer switch. | 14th Oct 1921 | Box 61a \ 1 scan0124 | |
| Testing a Lucas Head Light Dimmer, detailing issues with switch travel and excessive heat generation. | 20th Oct 1921 | Box 61a \ 1 scan0125 | |
| Testing and performance of a Lucas head light dimmer switch with high-power lamps. | 21th Oct 1921 | Box 61a \ 1 scan0126 | |
| Invisible wiring on lamps, the Klaxon horn, and a new combined switch for the 'Goshawk II' model. | 26th Nov 1921 | Box 61a \ 1 scan0127 | |
| Fitting new equipment, Goshawk II specifications, and a cautious approach to novel technologies like front-wheel brakes. | 26th Nov 1921 | Box 61a \ 1 scan0128 | |
| Letter discussing opinions on a 20 HP car and the Goshawk II aero engine. | 26th Nov 1921 | Box 61a \ 1 scan0129 | |
| Request for the results of a tested Lucas Dimming Switch for potential fitment to cars. | 9th Dec 1921 | Box 61a \ 1 scan0130 | |
| Suggestion to fit Lucas Dimming Switches to cars to reduce headlight glare when passing other traffic. | 13th Dec 1921 | Box 61a \ 1 scan0131 | |
| Correspondence with Bleriot Ltd concerning their lamps. | 13th Dec 1921 | Box 61a \ 1 scan0132 | |
| Letter from Blériot Limited concerning the design and fitting of lamps following an inspection. | 12th Dec 1921 | Box 61a \ 1 scan0133 | |
| Short memo regarding headlamps and enclosing a copy of a letter to Messrs. Bleriot Limited. | 12th Dec 1921 | Box 61a \ 1 scan0134 | |
| Letter to Bleriot Limited regarding the inspection and trial of headlamps. | 12th Dec 1921 | Box 61a \ 1 scan0135 | |
| Query regarding the approval of dimmer switches as a temporary solution for headlamp glare. | 20th Dec 1921 | Box 61a \ 1 scan0136 | |
| Recommendation for a Lucas Dimming Switch to be fitted to the instrument board to avoid headlamp glare. | 1st Jan 1922 | Box 61a \ 1 scan0137 | |
| Inadequacy of side lamps for maintenance and proposing a dedicated inspection lamp for the Goshawk model. | 24th Jan 1922 | Box 61a \ 1 scan0138 | |
| Options for headlamp bulbs and the required dynamo and battery upgrades for a Pedraza chassis. | 23th Feb 1922 | Box 61a \ 1 scan0139 | |
| Concluding page of a memorandum offering further information. | 23th Feb 1922 | Box 61a \ 1 scan0140 | |
| New sample 40/50 headlamp bracket, proposing its standardization and manufacture from steel instead of bronze. | 2nd May 1922 | Box 61a \ 1 scan0141 | |
| Copy of a sales letter from Brolt Limited regarding their Brolt Dimmer and Spark Gauge products. | 20th Jun 1922 | Box 61a \ 1 scan0142 | |
| Attached letter from Messrs. Brolt about their head lamp dimmer. | 26th Jun 1922 | Box 61a \ 1 scan0143 | |
| Request for a set of Barkers dipping headlight fittings for Mr. Royce's car, 6.EX. | 29th Sep 1922 | Box 61a \ 1 scan0144 | |
| Fitting side carriers for spare wheels and dipping headlights to the 6.EX car. | 6th Oct 1922 | Box 61a \ 1 scan0145 | |
| Query regarding the expected delivery of dipping head lights for car 6.EX. | 12th Oct 1922 | Box 61a \ 1 scan0146 | |
| Dispatch of parts to enable the headlights to dip for car no. 6 EX. | 13th Oct 1922 | Box 61a \ 1 scan0147 | |
| Preference for dipping headlamps over a dimming switch. | 16th Oct 1922 | Box 61a \ 1 scan0148 | |
| Letter from Barker & Co. confirming the despatch of dipping headlamp gear for Mr. Royce's Car. | 17th Oct 1922 | Box 61a \ 1 scan0149 | |
| Design and placement of a dimmer switch for the Goshawk II's headlamps. | 27th Oct 1922 | Box 61a \ 1 scan0150 | |
| Design and alternatives for headlight dimmers, favouring dipping headlights for the Goshawk model. | 28th Oct 1922 | Box 61a \ 1 scan0151 | |
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