| Description | Date | Identifier | |
| Modifications to a car's springing and shock-absorbers following criticisms during the Weymann London Trials. | 8th Apr 1932 | Box 107 \ 1 scan0097 | |
| Responding to queries about shock damper and spring modifications for Chassis No. GSR-14, the Weymann London Trials Car. | 9th Apr 1932 | Box 107 \ 1 scan0098 | |
| Requesting a set of low rating springs and discussing the modification of shock absorbers for chassis GSR-14. | 11th Apr 1932 | Box 107 \ 1 scan0099 | |
| Letter to a customer apologising for a delay and detailing car repairs and planned future work. | 2nd Apr 1932 | Box 107 \ 1 scan0100 | |
| Preparation and dispatch of new front and rear springs for Chassis GSP-14. | 12th Apr 1932 | Box 107 \ 1 scan0101 | |
| Testing of new Synchro Mesh Gears on engine GLN-60 and the recording of tappet clearances. | 16th Apr 1932 | Box 107 \ 1 scan0102 | |
| The replacement of car 20-G-4 to prepare it for demonstration work. | 21th Apr 1932 | Box 107 \ 1 scan0103 | |
| Follow-up request for a reply regarding car reference 20-G-4. | 26th Apr 1932 | Box 107 \ 1 scan0104 | |
| From Hs. to Cx. advising it will take a week to prepare a car for sales demonstration upon its return. | 26th Apr 1932 | Box 107 \ 1 scan0105 | |
| Quoting feedback on the poor lighting of the Smith Instrument Patch for the 20/25 model. | 4th May 1932 | Box 107 \ 1 scan0106 | |
| Old synchro-mesh gearbox on car 19-G4 and the process of engaging first speed. | 5th May 1932 | Box 107 \ 1 scan0107 | |
| Confirming information about the synchro mesh gearbox on model 19-G-4. | 6th May 1932 | Box 107 \ 1 scan0108 | |
| Arrangement and use of demonstration cars and a replacement vehicle. | 10th May 1932 | Box 107 \ 1 scan0109 | |
| Unsuitability of car 16-G4 and the planned modification of car 20-G4 for use as a Trials car. | 11th May 1932 | Box 107 \ 1 scan0110 | |
| Front spring buffer clearances and potential modifications for a demonstration car. | 24th May 1932 | Box 107 \ 1 scan0111 | |
| Note specifying that four passengers were in the car when its camber measurements were taken. | 25th May 1932 | Box 107 \ 1 scan0112 | |
| Modification to prevent the side steering tube from hitting the shock absorber. | 26th May 1932 | Box 107 \ 1 scan0113 | |
| Customer's (Mr. Hopps) critical feedback on the acceleration of the 20-G4 car compared to the 25 HP model. | 14th Jun 1932 | Box 107 \ 1 scan0114 | |
| Letter from a customer comparing a new 25 HP car with their current model and cancelling their order for the new type. | 12th Jun 1932 | Box 107 \ 1 scan0115 | |
| Page two of a letter from Bernard Hopps giving feedback on his car's engine performance. | 16th Jun 1932 | Box 107 \ 1 scan0116 | |
| Performance of the 25 HP car and the need for comparative testing. | 16th Jun 1932 | Box 107 \ 1 scan0117 | |
| Performance comparison between a 20.G.IV model and Mr. Bernard Hopps' car, analysing the impact of weight and axle ratio. | 15th Jun 1932 | Box 107 \ 1 scan0118 | |
| Vehicle performance, speedometer accuracy, and comparing the wheel torque of U series and R series cars. | 15th Jun 1932 | Box 107 \ 1 scan0119 | |
| Performance comparison between R and U series engines for the 25 HP cars, showing improved torque and power curves. | 1st Nov 1931 | Box 107 \ 1 scan0120 | |
| Thank you letter regarding a reply to Mr. Hopps' criticisms and mentioning a demonstration car. | 17th Jun 1932 | Box 107 \ 1 scan0121 | |
| Proposal to standardise new resonance exhaust silencers on 25 HP cars and arrange for testing. | 27th Jun 1932 | Box 107 \ 1 scan0122 | |
| Short typed memo concerning Resonance Exhaust Silencers and the availability of GBT-24. | 30th Jun 1932 | Box 107 \ 1 scan0123 | |
| The fitting of a resonance exhaust silencer to car GBT-24 in Derby. | 5th Jul 1932 | Box 107 \ 1 scan0124 | |
| Instructions to remove an experimental silencer from car GBT-24, and the decision not to fit a resonance silencer on GBT-9. | 13th Jul 1932 | Box 107 \ 1 scan0125 | |
| Inquiry regarding the suspension springs and shock absorber settings for car models 20-G4 and GAU-64, particularly for use on French roads. | 22th Jul 1932 | Box 107 \ 1 scan0126 | |
| Recommendation on springs and shock absorber settings for Continental touring. | 25th Jul 1932 | Box 107 \ 1 scan0127 | |
| Cover letter from A.F. Sidgreaves forwarding an encouraging letter from an agent, Mr. Douglas Croall. | 25th Jul 1932 | Box 107 \ 1 scan0128 | |
| Letter of appreciation from Mr. R. Douglass Croall regarding a new demonstration car's performance and synchromesh. | 21th Jul 1932 | Box 107 \ 1 scan0129 | |
| Opinion on the synchro-mesh gearbox for the 20/25 model. | 8th Aug 1932 | Box 107 \ 1 scan0130 | |
| Copy of a letter from Mr. W.W. Constantine praising the new synchro-mesh gearbox. | 5th Aug 1932 | Box 107 \ 1 scan0131 | |
| Performance and wear report on a car after extensive mileage, detailing the status of its engine and various components. | 18th Aug 1932 | Box 107 \ 1 scan0132 | |
| List of identified faults with vehicle components such as the petrol gauge, water pump, clutch, fan, and transmission. | 18th Aug 1932 | Box 107 \ 1 scan0133 | |
| Attaching a list of lap speeds and flying half-mile times recorded at Brooklands. | 18th Aug 1932 | Box 107 \ 1 scan0134 | |
| Brooklands test results comparing performance with different fuels, tyres, and carburetter setups. | 16th Aug 1932 | Box 107 \ 1 scan0135 | |
| Acceleration test results comparing a 'Present Jet' with a 'Jet supplied by S.U.'. | 16th Aug 1932 | Box 107 \ 1 scan0136 | |
| List of modifications to be carried out on car G.L.N.60. | 22th Aug 1932 | Box 107 \ 1 scan0137 | |
| Instructions for setting split piston type dampers for G.L.N.60. | 22th Aug 1932 | Box 107 \ 1 scan0138 | |
| Identifying Mr. W.W. Constantine, the British technical representative of General Motors, regarding a Synchromesh agreement. | 29th Aug 1932 | Box 107 \ 1 scan0139 | |
| Letter to Mr. Clark of Bendix-Perrot Brakes regarding Mr. Bendix's request to use a car during his visit to England. | 6th Sep 1932 | Box 107 \ 1 scan0140 | |
| Multiple faults with a car, including the servo fabric, a fuel stoppage, and radiator shutter issues. | 15th Sep 1932 | Box 107 \ 1 scan0141 | |
| Issues with a car's rear-spring control and windscreen wipers following a road test to Scotland. | 15th Sep 1932 | Box 107 \ 1 scan0142 | |
| Unsatisfactory servo fabric and thermostat control on a 25 HP car, suggesting a replacement spring similar to the Phantom II. | 15th Sep 1932 | Box 107 \ 1 scan0143 | |
| Tappet clearance measurements and an over-run issue for car GLN-60. | 26th Sep 1932 | Box 107 \ 1 scan0144 | |
| Vincent Bendix's upcoming visit to London and a proposal to let him test drive a 25 HP car. | 6th Oct 1932 | Box 107 \ 1 scan0145 | |
| Letter from Bendix-Perrot Brakes Ltd. acknowledging a request regarding the use of a car for Mr. Bendix's visit. | 8th Oct 1932 | Box 107 \ 1 scan0146 | |
| Letter to Bendix-Perrot Brakes Ltd, advising that a copy of another letter has been sent to Mr. Clark. | 18th Oct 1932 | Box 107 \ 1 scan0147 | |
| Letter to Mr. H. Clark arranging a meeting at the Motor Show. | 17th Oct 1932 | Box 107 \ 1 scan0148 | |
| List of work instructions for car GLN.60. | 24th Oct 1932 | Box 107 \ 1 scan0149 | |
| Requesting to change spark plugs, grease the car, fill shock absorbers and road test for knocks. | 24th Oct 1932 | Box 107 \ 1 scan0150 | |
| Test report on a second-hand 25 HP car, GMU-27, detailing unsatisfactory braking, power issues, and disintegrated servo-lining. | 28th Oct 1932 | Box 107 \ 1 scan0151 | |
| Bonnet damage on a Hooper Trials 25 HP car and a proposed fix. | 8th Nov 1932 | Box 107 \ 1 scan0152 | |
| Fitting new thermostat springs to 'Phantom II' and 25 HP trials cars. | 16th Nov 1932 | Box 107 \ 1 scan0153 | |
| The suitability of thermostat springs from Phantom II trials cars for use in the 25 HP car. | 17th Nov 1932 | Box 107 \ 1 scan0154 | |
| High line appearing on the bonnet panels of a 25HP car during trials, and potential solutions. | 18th Nov 1932 | Box 107 \ 1 scan0155 | |
| Bonnet paintwork discolouration, weighing the options of fitting contact discs versus the resulting damage. | 18th Nov 1932 | Box 107 \ 1 scan0156 | |
| Requesting two further thermostat springs for cars GAU-14 and GKT-22. | 18th Nov 1932 | Box 107 \ 1 scan0157 | |
| Required work on a car's exhaust system and brakes. | 23th Nov 1932 | Box 107 \ 1 scan0158 | |
| Frictional loading of the 20/25HP Slipper Flywheel and its effects on vibration and engine gear rattle. | 23th Nov 1932 | Box 107 \ 1 scan0159 | |
| Requesting a proper reply to questions raised in a previous correspondence regarding a trials car. | 23th Nov 1932 | Box 107 \ 1 scan0160 | |
| Engine vibration issues and potential solutions for the GAU-7 Trials Car. | 30th Nov 1932 | Box 107 \ 1 scan0161 | |
| Expected reaction to the removal of springs from a slipper-wheel on trials car GAU-7. | 1st Dec 1932 | Box 107 \ 1 scan0162 | |
| Faults and arrangements for the GAU-7 car during its London Trials. | 4th Jan 1933 | Box 107 \ 1 scan0163 | |
| Car's inspection, brakes, performance, and arranging further work. | 21th Feb 1933 | Box 107 \ 1 scan0164 | |
| Follow-up request for information regarding Chassis GAU-48, a Park Ward Trials Car. | 21th Feb 1933 | Box 107 \ 1 scan0165 | |
| Chassis No. GAU-48, the Park Ward Trials Car, and an inquiry about a batch of 142 cars. | 20th Feb 1933 | Box 107 \ 1 scan0166 | |
| Potential cause of loose split pins being the introduction of the synchro-mesh gearbox. | 23th Feb 1933 | Box 107 \ 1 scan0167 | |
| Request to fit a Bentley head, induction pipe, and carburetters to car GLN.60. | 22th May 1933 | Box 107 \ 1 scan0168 | |
| Requesting the fitting of a non-trepanned cylinder head and carburettors to car GLN.60. | 22th May 1933 | Box 107 \ 1 scan0169 | |
| Oil getting on the servo linings causing defective brakes and requesting a modification. | 24th May 1933 | Box 107 \ 1 scan0170 | |
| Persistent vibration and noise issue in a London Trials Saloon car, rendering it useless for demonstration work. | 7th Jun 1933 | Box 107 \ 1 scan0171 | |
| Complaint about a half speed crankshaft period on a London Trials Saloon car. | 8th Jun 1933 | Box 107 \ 1 scan0172 | |
| Resolution of a periodic vibration issue on the London Trials Saloon GRW-32. | 1st Jun 1933 | Box 107 \ 1 scan0173 | |
| Resolution of a periodic vibration issue in a car and requesting a detailed explanation of the fix. | 9th Jun 1933 | Box 107 \ 1 scan0174 | |
| Replacement of a C.13 unit with a C.10 unit in the first Bentley car (GLN-60) and further testing. | 10th Jun 1933 | Box 107 \ 1 scan0175 | |
| Confirming a conversation with reference to disposing of a car. | 13th Jun 1933 | Box 107 \ 1 scan0176 | |
| Inquiring about the amount of petrol put into vehicle GLN-60. | 29th Jun 1933 | Box 107 \ 1 scan0177 | |
| Data sheet recording acceleration times and speeds over two separate test runs. | 6th Jul 1933 | Box 107 \ 1 scan0178 | |
| Results of car performance trials and identified mechanical issues. | 1st Nov 1933 | Box 107 \ 1 scan0179 | |
| Typed note discussing a plan for fitting a new axle and the availability of a car. | 1st Nov 1931 | Box 107 \ 1 scan0180 | |
| Responding to remarks about a 'retard drive groan' on a 25 HP trials car and advising that lap speeds are unavailable. | 1st Nov 1931 | Box 107 \ 1 scan0181 | |
| Comparative tests at Brooklands and addressing issues of exhaust spitting and retard drive groan. | 2nd Nov 1933 | Box 107 \ 1 scan0182 | |
| Proposing comparative tests for an improved carburetter on a 25 HP car. | 7th Nov 1935 | Box 107 \ 1 scan0183 | |
| The feasibility of fitting a relay clutch device and controllable shock dampers to a car with an outdated specification. | 7th Nov 1933 | Box 107 \ 1 scan0184 | |
| That drawing 20-G-4 is outdated for fitting controllable shock dampers and a new carburettor, and arranging for a new clutch device to be sent to Cricklewood. | 8th Nov 1933 | Box 107 \ 1 scan0185 | |
| Clutch performance of car GLN-60 after 3,000 miles. | 13th Nov 1933 | Box 107 \ 1 scan0186 | |
| The clutch performance for car GLN-60 after 3,000 miles of use. | 13th Nov 1933 | Box 107 \ 1 scan0187 | |
| Requesting the preparation of parts for a vacuum-assisted clutch modification on a 20/25 model. | 24th Nov 1933 | Box 107 \ 1 scan0188 | |
| Inquiring about the readiness of parts for a power-assisted clutch conversion. | 24th Nov 1933 | Box 107 \ 1 scan0189 | |
| Confirmation of a telegram and instructions for car maintenance work on chassis 20-G-IV. | 28th Nov 1933 | Box 107 \ 1 scan0190 | |
| Engine mounting modifications, a gearbox replacement, and leaking shock dampers for car GLN-60. | 30th Nov 1933 | Box 107 \ 1 scan0191 | |
| Requesting the urgent completion of a high compression Bentley cylinder head, which is currently awaiting valves. | 1st Dec 1933 | Box 107 \ 1 scan0192 | |
| Requesting an uncleaned unit from car GLN.60 be stripped for examination after running 10,000 miles on T.E.L. | 2nd Dec 1933 | Box 107 \ 1 scan0193 | |
| Upgrades and the accelerated testing plan for the GUB-5 chassis. | 13th Dec 1933 | Box 107 \ 1 scan0194 | |
| Troubleshooting and replacement instructions for a failing S.U. petrol pump on vehicle GIN.60. | 16th Dec 1933 | Box 107 \ 1 scan0195 | |
| Incorrect petrol pump and proposing to use the present one until a correct replacement arrives from Skinner. | 18th Dec 1933 | Box 107 \ 1 scan0196 | |
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