| Description | Date | Identifier | |
| Letter to Mr. Kennington of Delco-Remy & Hyatt, Ltd. arranging a visit to the Vauxhall Works. | 17th Feb 1937 | Box 142 \ 3 scan0126 | |
| Petrol consumption tests comparing the standard top gear and the over-drive on the Phantom III. | 16th Feb 1937 | Box 142 \ 3 scan0127 | |
| Requesting the status of parts from G/R sheets to resolve a credit issue with Bentley Motors. | 17th Feb 1937 | Box 142 \ 3 scan0128 | |
| The removal and inspection of various sparking plugs. | 22th Feb 1937 | Box 142 \ 3 scan0129 | |
| The removal, replacement, and inspection of Bosch and Champion sparking plugs. | 22th Feb 1937 | Box 142 \ 3 scan0130 | |
| To superintendents regarding the required notice period for anticipated employee suspensions. | 24th Feb 1937 | Box 142 \ 3 scan0131 | |
| Letter to Capt. J.S. Irving of Bendix Ltd. thanking him for a dinner and discussing a future visit. | 24th Feb 1937 | Box 142 \ 3 scan0132 | |
| Micro-examination report on a steel ball from a Ransome & Marles bearing. | 25th Feb 1937 | Box 142 \ 3 scan0133 | |
| Investigation into a 'Dual Spsrking Plug' from W.J. Vincent. | 25th Feb 1937 | Box 142 \ 3 scan0134 | |
| Letter from the inventor of the 'Vincent' Dual Sparking Plug offering the patent to the company for inspection. | 24th Feb 1937 | Box 142 \ 3 scan0135 | |
| Patent specification for improvements in sparking plugs with an integrated heating element. | 3rd Mar 1936 | Box 142 \ 3 scan0136 | |
| Complete specification drawing showing a cross-section of a mechanical assembly with numbered components. | 27th Feb 1937 | Box 142 \ 3 scan0137 | |
| Rejection of a 'Vincent Sparking Plug' due to its unsuitability for high-efficiency engines. | 27th Feb 1937 | Box 142 \ 3 scan0138 | |
| Internal memorandum regarding a Vincent Sparking Plug. | 1st Mar 1937 | Box 142 \ 3 scan0139 | |
| Letter declining a request to test a dual sparking plug. | 1st Mar 1937 | Box 142 \ 3 scan0140 | |
| Sg. to Gry. requesting a meeting in Derby to discuss an invention. | 1st Mar 1937 | Box 142 \ 3 scan0141 | |
| Letter from a consulting engineer offering to provide full information on applications filed in the UK and Germany. | 26th Feb 1937 | Box 142 \ 3 scan0142 | |
| Letter to M. Raht Esq. requesting a copy of a patent application for clarification. | 24th Feb 1937 | Box 142 \ 3 scan0143 | |
| Letter from a consulting engineer regarding engine protection against condensation when idle. | 22th Feb 1937 | Box 142 \ 3 scan0144 | |
| Page 2 of a letter from M. Raht discussing engine starting methods and a British patent application. | 3rd Mar 1937 | Box 142 \ 3 scan0145 | |
| Letter from the Experimental Dept. replying to an inquiry about a car's mileage. | 3rd Mar 1937 | Box 142 \ 3 scan0146 | |
| Letter regarding the ownership history and mileage of an 8-cylinder Graham vehicle. | 28th Feb 1937 | Box 142 \ 3 scan0147 | |
| Letter from a customer inquiring about the mileage history of a 1934 car. | 3rd Mar 1937 | Box 142 \ 3 scan0148 | |
| Increasing gap size of K.L.G. I7I sparking plugs in a Phantom III engine after mileage. | 3rd Mar 1937 | Box 142 \ 3 scan0149 | |
| Letter to M. Rant from the Experimental Department requesting a sketch and explanation of his invention. | 3rd Mar 1937 | Box 142 \ 3 scan0150 | |
| Note regarding an improved fabric coupling sample with sewn edges from Beldam Asbestos Co. Ltd. | 25th Feb 1937 | Box 142 \ 3 scan0151 | |
| To Roy regarding the decision to discard fabric couplings. | 5th Mar 1937 | Box 142 \ 3 scan0152 | |
| Test results for three types of K.L.G. sparking plugs for Bentley engines to address issues with leaded fuel. | 5th Mar 1937 | Box 142 \ 3 scan0153 | |
| Performance comparison report on K.L.G. 850 and K.L.G. FLB.50.X spark plugs. | 5th Mar 1937 | Box 142 \ 3 scan0154 | |
| Results of tests on K.L.G. sparking plugs for Bentley engines on leaded fuel. | 5th Mar 1937 | Box 142 \ 3 scan0155 | |
| Test report comparing the performance of two different K.L.G. spark plugs. | 5th Mar 1937 | Box 142 \ 3 scan0156 | |
| Letter from a consulting engineer regarding the design of shutters for the air-intake and exhaust pipe. | 5th Mar 1937 | Box 142 \ 3 scan0157 | |
| Page two of a letter discussing an automatic shutter and comparing a new device to a known choke or strangler. | 12th Mar 1937 | Box 142 \ 3 scan0158 | |
| Letter responding to an inventor, asking for a demonstration of their invention on an actual car. | 12th Mar 1937 | Box 142 \ 3 scan0159 | |
| The performance and replacement of Bentley sparking plugs. | 13th Mar 1937 | Box 142 \ 3 scan0160 | |
| The testing and fitting of new Delco-Remy horns to chassis 39-EX. | 15th Mar 1937 | Box 142 \ 3 scan0161 | |
| Testing and replacement of Phantom III sparking plugs. | 16th Mar 1937 | Box 142 \ 3 scan0162 | |
| The performance and replacement of sparking plugs on a Phantom III model. | 16th Mar 1937 | Box 142 \ 3 scan0163 | |
| Request to despatch a wooden model to Lillie Hall for the attention of Mr. J. L. Evens. | 17th Mar 1937 | Box 142 \ 3 scan0164 | |
| Brief internal note confirming agreement to three previously mentioned proposals. | 18th Mar 1937 | Box 142 \ 3 scan0165 | |
| Request to the laboratory for a construction analysis of 'Klingerite 1000' and 'Reinz special' gaskets. | 19th Mar 1937 | Box 142 \ 3 scan0166 | |
| The removal of K.L.G.FLB.50X sparking plugs from vehicle GAE-20 and their replacement with K.L.G.E.27. | 20th Mar 1937 | Box 142 \ 3 scan0167 | |
| The testing of three types of K.L.G. sparking plugs for a 30.HP. engine. | 20th Mar 1937 | Box 142 \ 3 scan0168 | |
| Letter from a consulting engineer regarding a demonstration of a butterfly-like shutter car improvement. | 21th Mar 1937 | Box 142 \ 3 scan0169 | |
| Request for a sample of the type from each typewriter at the Works. | 22th Mar 1937 | Box 142 \ 3 scan0170 | |
| Offering two experimental cars, 32-EX and 36-EX, for use over Easter. | 23th Mar 1937 | Box 142 \ 3 scan0171 | |
| To RM regarding holiday departure procedures. | 1st Apr 1937 | Box 142 \ 3 scan0172 | |
| Requesting that trunk calls between London and Derby be confined to a special daily reservation time. | 1st Apr 1937 | Box 142 \ 3 scan0173 | |
| To superintendents and foremen regarding the annual election for the Welfare Committee. | 5th Apr 1937 | Box 142 \ 3 scan0174 | |
| Fitting Korundite Sparking Plugs to all car types and replacing existing ones. | 7th Apr 1937 | Box 142 \ 3 scan0175 | |
| Continued testing of Delco Wind Tone Horns on a Phantom III vehicle. | 8th Apr 1937 | Box 142 \ 3 scan0176 | |
| Weekly chassis output schedule for Bentley models from the erecting bay to the test department for 1937. | 8th Apr 1937 | Box 142 \ 3 scan0177 | |
| Chart detailing the weekly Phantom III chassis output programme from the erecting bay to the test department for 1937. | 8th Apr 1937 | Box 142 \ 3 scan0178 | |
| Chart showing the weekly chassis output from the erecting bay to the test department for the 25/30 HP chassis up to the end of September 1937. | 8th Apr 1937 | Box 142 \ 3 scan0179 | |
| Establishing a new process for handling and tracking requests for tracings after a batch was mislaid. | 9th Apr 1937 | Box 142 \ 3 scan0180 | |
| Agreement with K.L.G. Company for the supply of 'Corundite' sparking plugs. | 9th Apr 1937 | Box 142 \ 3 scan0181 | |
| Required quantity of 'Corundite' sparking plugs for various chassis types. | 9th Apr 1937 | Box 142 \ 3 scan0182 | |
| Production instructions for modifications to the Phantom III starter motor. | 16th Apr 1937 | Box 142 \ 3 scan0183 | |
| Test report on E.27 sparking plugs used in a 4¼ Litre Bentley engine. | 20th Apr 1937 | Box 142 \ 3 scan0184 | |
| Investigation into misfires on cars 36-EX and 5-B-IV caused by K.L.G. sparking plugs. | 23th Apr 1937 | Box 142 \ 3 scan0185 | |
| Announcing the appointment of Mr. Hives as a Director of the Company. | 24th Apr 1937 | Box 142 \ 3 scan0186 | |
| Replacing K.L.G. sparking plugs due to large gaps causing an engine misfire on B bank. | 26th Apr 1937 | Box 142 \ 3 scan0187 | |
| To officials and foremen regarding company policy for employee absences. | 30th Apr 1937 | Box 142 \ 3 scan0188 | |
| Confirming a telephone conversation requesting a new batch of washers as stock has been depleted. | 4th May 1937 | Box 142 \ 3 scan0189 | |
| Parts list and weight calculation for a Peregrine Engine at Shardlow, including a list of missing components. | 6th May 1937 | Box 142 \ 3 scan0190 | |
| Letter to the Technical Editor of 'The Motor' magazine challenging an article on 'Corner-Ability'. | 6th May 1937 | Box 142 \ 3 scan0191 | |
| Outlining the procedure for circulating customer complaint files. | 6th May 1937 | Box 142 \ 3 scan0192 | |
| To Superintendents and Foremen regarding altered night-shift hours for the Coronation Holiday. | 8th May 1937 | Box 142 \ 3 scan0193 | |
| Issues with regulator resistance unit burn-outs in several vehicles. | 10th May 1937 | Box 142 \ 3 scan0194 | |
| Letter from 'The Motor' magazine to G. H. Grylls regarding cornering tests and Tapley meter readings. | 7th May 1937 | Box 142 \ 3 scan0195 | |
| Letter from the Technical Editor of 'The Motor' magazine to G. H. Grylls accepting an invitation for a demonstration in Derby. | 7th May 1937 | Box 142 \ 3 scan0196 | |
| Letter to the Technical Editor of 'The Motor' regarding a visit to Derby and the effect of speedometer error on acceleration figures. | 14th May 1937 | Box 142 \ 3 scan0197 | |
| The testing of K.L.G. sparking plugs and recommendations for optimal plug gap settings. | 21th May 1937 | Box 142 \ 3 scan0198 | |
| Rm. to By. suggesting a trial for a potential employee, the son of a former colleague. | 22th May 1937 | Box 142 \ 3 scan0199 | |
| Letter acknowledging an inquiry and passing it to the Drawing Office for future vacancy consideration. | 22th May 1937 | Box 142 \ 3 scan0200 | |
| New, centralized system for recording and distributing the weight of parts, which will include photographs for clarity. | 24th May 1937 | Box 142 \ 3 scan0201 | |
| Requesting approval for a quotation to cover an office floor with linoleum. | 24th May 1937 | Box 142 \ 3 scan0202 | |
| Letter from E.W. Drury acknowledging receipt of a letter to W.A. Robotham. | 26th May 1937 | Box 142 \ 3 scan0203 | |
| K.L.G.E.26 sparking plugs burning away too quickly at the points. | 27th May 1937 | Box 142 \ 3 scan0204 | |
| The removal and inspection of six K.L.G. sparking plugs due to misfiring and excessive burning. | 26th May 1937 | Box 142 \ 3 scan0205 | |
| Report and discussion regarding sparking plugs burning away too quickly and a proposed solution. | 27th May 1937 | Box 142 \ 3 scan0206 | |
| The performance and issues of K.L.G. E.26 sparking plugs removed from a vehicle. | 26th May 1937 | Box 142 \ 3 scan0207 | |
| The performance of Sintercorund plugs, noting issues with point burning. | 28th May 1937 | Box 142 \ 3 scan0208 | |
| Letter from a supplier offering rubberised cord fabric for experimental purposes. | 29th May 1937 | Box 142 \ 3 scan0209 | |
| Implementing a rule that all staff visiting other factories or on sub-contract work must submit daily reports. | 31th May 1937 | Box 142 \ 3 scan0210 | |
| Standardization of nomenclature for different types of spark plugs. | 31th May 1937 | Box 142 \ 3 scan0211 | |
| Memo discussing a production decision, inadequate testing of parts, and a part failure. | 1st Jun 1937 | Box 142 \ 3 scan0212 | |
| Test report on a PH.III starter motor with a cork friction brake on the armature. | 1st Jun 1937 | Box 142 \ 3 scan0213 | |
| On starter motor failures for the Phantom III, concluding no design change is necessary. | 4th Jun 1937 | Box 142 \ 3 scan0214 | |
| From 'Gry' detailing updates on various engineering and customer-related tasks. | 2nd Jun 1937 | Box 142 \ 3 scan0215 | |
| The performance history and testing of K.L.G. spark plugs over various mileages. | 1st Jun 1937 | Box 142 \ 3 scan0216 | |
| The performance and issues with Lucas Electric Screen Wipers after a 15,500-mile test in France. | 1st Jun 1937 | Box 142 \ 3 scan0217 | |
| The performance of the coupling between wiper driving boxes. | 1st Jun 1937 | Box 142 \ 3 scan0218 | |
| Letter to J. Plum Esq. declining a patent proposal for a mechanism more suited to lorries than private cars. | 2nd Jun 1937 | Box 142 \ 3 scan0219 | |
| Letter to The Rover Co. Ltd. declining interest in an invention. | 2nd Jun 1937 | Box 142 \ 3 scan0220 | |
| The selection and testing of new ignition wire tubes for the Phantom III. | 2nd Jun 1937 | Box 142 \ 3 scan0221 | |
| Request for special nuts and other fitments for Duralumin hubs being fitted to a Bentley by the Dunlop Co. | 3rd Jun 1937 | Box 142 \ 3 scan0222 | |
| Issues with sparking plug terminals and ignition wires on the Phantom III. | 4th Jun 1937 | Box 142 \ 3 scan0223 | |
| The lack of standardised nomenclature for spark plug insulators from various manufacturers. | 7th Jun 1937 | Box 142 \ 3 scan0224 | |
| Announcing a personnel change for the head of the clutch section in the Experimental Department. | 7th Jun 1937 | Box 142 \ 3 scan0225 | |
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