| Description | Date | Identifier | |
| Internal stock order request for instrument bulbs. | 4th Jan 1939 | Box 166 \ 4 img237 | |
| Letter from electric lamp manufacturer E. & W. Terence regarding anti-dazzle bulbs sent for testing. | 4th Jan 1939 | Box 166 \ 4 img238 | |
| Cover page for a document titled 'Conversion by Rode'. | 4th Jan 1939 | Box 166 \ 4 img239 | |
| Product information for the 'RODE' anti-dazzle flat topped beam bulb. | 4th Jan 1939 | Box 166 \ 4 img240 | |
| Principle and fitting instructions for an anti-dazzle bulb. | 4th Jan 1939 | Box 166 \ 4 img241 | |
| Promotional leaflet cover for a 'RODE' headlamp conversion. | 5th Jan 1938 | Box 166 \ 4 img242 | |
| Letter confirming an appointment to inspect Mazda 'Regulation' Twin Filament headlamp bulbs fitted to a car. | 5th Jan 1938 | Box 166 \ 4 img243 | |
| Correspondence from The British Thomson-Houston Company regarding a sample headlamp bulb with a Bosch cap. | 11th Jan 1939 | Box 166 \ 4 img244 | |
| Requesting the despatch of two 12 volt headlamp bulbs for experimental purposes. | 13th Jan 1939 | Box 166 \ 4 img245 | |
| Despatch request for two types of 12-volt bulbs to be sent to British Thomson Houston Ltd. | 14th Jan 1939 | Box 166 \ 4 img246 | |
| Invoice from Joseph Lucas Ltd for 12-volt 48 watt No.88 Bulbs. | 21th Jan 1939 | Box 166 \ 4 img247 | |
| Covering order request for 24 headlamp bulbs from Messrs. Lucas. | 24th Jan 1939 | Box 166 \ 4 img248 | |
| Letter from The British Thomson-Houston Company regarding the supply of various automobile bulbs. | 24th Jan 1939 | Box 166 \ 4 img249 | |
| Letter to B.T.H. Co. Ltd. regarding the testing of sample bulbs, comparing two-pin and three-pin cap types. | 2nd Feb 1939 | Box 166 \ 4 img250 | |
| Duplicate order of 12-volt 48-watt bulbs from Joseph Lucas Ltd. | 8th Feb 1939 | Box 166 \ 4 img251 | |
| Covering order for No.88 headlamp bulbs from Messrs. Lucas. | 17th Feb 1939 | Box 166 \ 4 img252 | |
| Letter from E. & W. Terence chasing a response regarding anti-dazzle bulbs sent for testing. | 14th Mar 1939 | Box 166 \ 4 img253 | |
| Covering memo from J.S. forwarding a letter from E. & W. Terence and requesting a reply. | 14th Mar 1939 | Box 166 \ 4 img254 | |
| Letter to a lamp manufacturer apologising for a delayed reply and returning rejected bulbs. | 16th Mar 1939 | Box 166 \ 4 img255 | |
| Requesting the return of two 12 volt 'Rode' anti-dazzle headlamp bulbs to the makers. | 18th Mar 1939 | Box 166 \ 4 img256 | |
| Order for 2 dozen 12 volt 6 watt S.C.C. side lamp bulbs. | 19th Apr 1939 | Box 166 \ 4 img257 | |
| The testing and unsuitability of 'Rode' Anti Dazzle Bulbs. | 21th Apr 1939 | Box 166 \ 4 img258 | |
| Order for side lamp bulbs for stock. | 23th Jun 1939 | Box 166 \ 4 img259 | |
| The purchase of 12 volt, 24 watt S.C.C stop lamp bulbs for stock. | 11th Jul 1939 | Box 166 \ 4 img260 | |
| Request to obtain headlamp adaptors and double filament lamps from Messrs. Lucas for the Mark VI R.R. type headlamp. | 21th Jul 1939 | Box 166 \ 4 img261 | |
| Internal request to order side lamp bulbs for use on experimental cars. | 16th Aug 1939 | Box 166 \ 4 img262 | |
| Internal memorandum requesting an order for lamp bulb stock. | 16th Oct 1939 | Box 166 \ 4 img263 | |
| Covering order for Lucas No. 52, 12 volt headlamp bulbs for stock. | 3rd Nov 1939 | Box 166 \ 4 img264 | |
| Requesting an order for 2 dozen 12v 6 watt side lamp bulbs from Edison Swan Electric Co. Ltd. | 5th Dec 1939 | Box 166 \ 4 img265 | |
| The delivery of incorrect lamp bulbs and a request to contact the Edison Electric Co. Ltd. | 7th Dec 1939 | Box 166 \ 4 img266 | |
| Requesting an order for 4 dozen 12 volt XHE headlamp bulbs from Lucas. | 22th Jan 1940 | Box 166 \ 4 img267 | |
| Order for various lamp bulbs for stock. | 19th Feb 1940 | Box 166 \ 4 img268 | |
| Order for lamp bulb stock. | 21th Mar 1940 | Box 166 \ 4 img269 | |
| Order for lamp bulb stock from Edison Electric Co. Ltd. | 5th Apr 1940 | Box 166 \ 4 img270 | |
| Internal memorandum requesting an order for 12 volt, 6 watt, S.C. type side lampbulbs. | 20th Apr 1940 | Box 166 \ 4 img271 | |
| Order for M.E.S. type lamp bulbs. | 14th May 1940 | Box 166 \ 4 img272 | |
| Request to obtain 4 dozen 12 Volt 6 Watt S.C.C. type lamp bulbs for the Clan Foundry. | 10th Sep 1940 | Box 166 \ 4 img273 | |
| Internal memorandum requesting an order for various lamp bulbs for use at Clan Foundry. | 9th Nov 1940 | Box 166 \ 4 img274 | |
| Internal memorandum requesting an order for one dozen Lucas headlamp bulbs for use at Clan Foundry. | 12th Dec 1940 | Box 166 \ 4 img275 | |
| To order lamp bulb stock for the Clan Foundry. | 28th Dec 1940 | Box 166 \ 4 img276 | |
| The supply of lamp bulbs for use at the Clan Foundry. | 17th Jan 1941 | Box 166 \ 4 img277 | |
| Request to obtain M.E.S. type bulbs from Edison-Swan Electric Co. Ltd. | 12th May 1941 | Box 166 \ 4 img278 | |
| The purchase of 2 dozen 3.8 volt M.E.S. bulbs for use at Clan Foundry. | 17th Jun 1941 | Box 166 \ 4 img279 | |
| The purchase of lamp bulbs for the Clan Foundry from The Edison Swan Electric Co., Ltd. | 7th Jul 1941 | Box 166 \ 4 img280 | |
| Rm/RC to Roy requesting an order for lamp bulbs for use at Clan Foundry. | 9th Sep 1941 | Box 166 \ 4 img281 | |
| Order for various lamp bulbs from Edison Swan Electric Co. Ltd. | 5th Jan 1942 | Box 166 \ 4 img282 | |
| Incorrect delivery of headlamp bulbs and a request for replacements. | 5th Jan 1942 | Box 166 \ 4 img283 | |
| Return of 12 heavy-type miners' bulbs delivered in error. | 19th Feb 1942 | Box 166 \ 4 img284 | |
| Confirming the receipt of 48 bulbs from Messrs. Joseph Lucas Ltd. | 1st Apr 1942 | Box 166 \ 4 img285 | |
| Order for one Butler combined stop and tail lamp for chassis 27-EX. | 22th Nov 1933 | Box 166 \ 5 img001 | |
| Letter to Joseph Lucas & Sons Ltd. requesting approved samples of a combined stop and tail lamp for the Bentley Chassis. | 31th Jan 1934 | Box 166 \ 5 img002 | |
| Letter from Joseph Lucas Ltd confirming the dispatch of a sample Bentley Stop and Tail Lamp. | 2nd Feb 1934 | Box 166 \ 5 img003 | |
| Sample Bentley stop and tail lamp from Lucas and a missing frame adaptor. | 5th Feb 1934 | Box 166 \ 5 img004 | |
| Sample combined stop and tail lamp for testing on a Bentley Chassis. | 7th Feb 1934 | Box 166 \ 5 img005 | |
| Concerns about the electrical load from tail lamps and number plate illumination on new car bodies. | 23th Mar 1934 | Box 166 \ 5 img006 | |
| Lucas combined stop and tail lamp for a Bentley chassis. | 29th Mar 1934 | Box 166 \ 5 img007 | |
| The testing of a Lucas combined stop and tail lamp for use on Bentley chassis. | 29th Mar 1934 | Box 166 \ 5 img008 | |
| The suitability of a Lucas combined stop and tail lamp for chassis with internally illuminated number plates. | 7th Apr 1934 | Box 166 \ 5 img009 | |
| Standardisation of a Lucas lamp for the Bentley car, and the strategic risks of creating a supplier monopoly. | 4th Apr 1934 | Box 166 \ 5 img010 | |
| The price and quality of the Butler lamp compared to the Lucas combined stop and tail lamp. | 14th Apr 1934 | Box 166 \ 5 img011 | |
| Inquiry into the excessive use of three rear lamps by coachbuilders on new bodies, resulting in an agreement to use only one. | 17th Apr 1934 | Box 166 \ 5 img012 | |
| Fitment and costs of Lucas combined stop and tail lamps for Bentley and Rolls chassis, comparing them to the Butler type. | 25th Apr 1934 | Box 166 \ 5 img013 | |
| Standardisation document for a Lucas combined stop and tail lamp on a Bentley. | 29th Mar 1934 | Box 166 \ 5 img014 | |
| Standardisation of a Lucas Combined Stop & Tail Lamp to supersede a problematic Butler lamp. | 9th Apr 1934 | Box 166 \ 5 img015 | |
| Standardisation of a Lucas combined stop and tail lamp. | 27th Apr 1934 | Box 166 \ 5 img016 | |
| Request to add instructions for refitting a Lucas Stop and Tail Lamp to the Electrical System. | 10th May 1934 | Box 166 \ 5 img017 | |
| Explaining the operation of brake, tail, and side lamps when an earth connection is disconnected. | 26th May 1934 | Box 166 \ 5 img018 | |
| Requesting a date for a lamp demonstration for R-R and Bentley models. | 26th Nov 1934 | Box 166 \ 5 img019 | |
| Appropriate bulb wattage for a Lucas combined stop and tail lamp. | 27th Nov 1934 | Box 166 \ 5 img020 | |
| The Lucas combined stop and tail lamp. | 28th Nov 1934 | Box 166 \ 5 img021 | |
| Short circuits and potential improvements for a Lucas type St.44/N combined stop and tail light. | 16th Jan 1935 | Box 166 \ 5 img022 | |
| Listing criticisms of a sample Butler tail lamp and comparing it to a Lucas lamp. | 23th Jan 1935 | Box 166 \ 5 img023 | |
| Investigation into short circuits on a combined stop and tail light. | 24th Jan 1935 | Box 166 \ 5 img024 | |
| Invoice from Butlers Limited for a sample Stop & Tail Lamp. | 5th Jun 1935 | Box 166 \ 5 img025 | |
| Request to fit a new sample of a Butler Stop and Tail Lamp for testing. | 2nd Jul 1935 | Box 166 \ 5 img026 | |
| Request to book in a new type of Butler Stop and Tail Lamp for testing. | 6th Aug 1935 | Box 166 \ 5 img027 | |
| Securing a sample Butler stop and tail lamp for testing purposes. | 20th Apr 1937 | Box 166 \ 5 img028 | |
| The production and fitting of tail lamps for various chassis models. | 30th Nov 1938 | Box 166 \ 5 img029 | |
| Incorrect supply of ST.38 tail lamps for various chassis models by Joseph Lucas Ltd. | 21th Jan 1939 | Box 166 \ 5 img030 | |
| Requesting the dispatch of tail lamp brackets and lamps for a Phantom III chassis. | 4th Feb 1939 | Box 166 \ 5 img031 | |
| The dispatch of replacement tail lamp brackets and associated parts to coachbuilders Park Ward & Co. Ltd. | 3rd Mar 1939 | Box 166 \ 5 img032 | |
| Letter to Joseph Lucas Ltd. requesting a blueprint for an illuminated number plate. | 26th Nov 1940 | Box 166 \ 5 img033 | |
| Implementation of tell-tale indicator signals for drivers. | 25th Jan 1934 | Box 166 \ 6 img001 | |
| Letter to Joseph Lucas Ltd. proposing a new scheme for reliable, lit-up semaphore arm direction indicators for trial. | 26th Jan 1934 | Box 166 \ 6 img002 | |
| Adding an illuminated dashboard tell-tale light for driving signals. | 25th Jan 1934 | Box 166 \ 6 img003 | |
| Letter from Joseph Lucas Ltd. regarding the wiring scheme for an illuminated arrow indicator lamp. | 1st Feb 1934 | Box 166 \ 6 img004 | |
| The experimental fitting of a telltale light for driving signals. | 1st Feb 1934 | Box 166 \ 6 img005 | |
| Request to send a complete set of Bentley electrical direction indicators with a switch to the Works. | 13th Mar 1934 | Box 166 \ 6 img006 | |
| Supply of Bentley electrical direction indicators by the coachbuilder, Park Wards. | 14th Mar 1934 | Box 166 \ 6 img007 | |
| Letter from Park Ward & Co. Ltd regarding the dispatch of direction indicators and a time switch for Customs purposes. | 14th Mar 1934 | Box 166 \ 6 img008 | |
| Invoice from Park Ward & Co. Ltd. for vehicle parts and requesting a covering order for payment. | 15th Mar 1934 | Box 166 \ 6 img009 | |
| Ordering Direction Indicators and a parts exchange with Delco Remy Corporation of America. | 16th Mar 1934 | Box 166 \ 6 img010 | |
| Dispatch of a pair of Bentley direction indicators to Delco Remy in Indiana, USA. | 16th Mar 1934 | Box 166 \ 6 img011 | |
| Letter to Delco-Remy Engineering in the USA regarding the supply and testing of Bentley direction indicators. | 16th Mar 1934 | Box 166 \ 6 img012 | |
| Invoice from Park Ward & Co. Ltd. for parts not recorded as received by the Stores Department. | 6th Apr 1934 | Box 166 \ 6 img013 | |
| Booking in of direction indicators that were delivered through the stores without a reception record. | 7th Apr 1934 | Box 166 \ 6 img014 | |
| Follow-up letter to Joseph Lucas Ltd regarding the readiness of illuminated arrow direction indicators for an experimental test. | 23th Apr 1934 | Box 166 \ 6 img015 | |
| Letter from Joseph Lucas Limited regarding a delay in supplying Trafficator samples. | 27th Apr 1934 | Box 166 \ 6 img016 | |
| Letter from an Electrical Engineer offering a new model Electric Car Indicator and another model for 1934 sunken bodywork. | 8th Jun 1934 | Box 166 \ 6 img017 | |
| Patents and country of manufacture for electric car direction indicators. | 13th Jun 1934 | Box 166 \ 6 img018 | |
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