| Description | Date | Identifier | |
| Exploded view and damage analysis of a cam roller from a Marles steering box. | 18th Jun 1936 | Box 101 \ 1 scan0296 | |
| Letter from a supplier regarding insulation issues on a tank unit. | 18th Jun 1936 | Box 101 \ 1 scan0297 | |
| Telegram received by telephone requesting two new races for a broken Marles steering ball race fork lever on car 22GV. | 18th Jun 1936 | Box 101 \ 2 scan0001 | |
| Telegram received by telephone regarding a broken steering ball race and a request for replacement parts. | 17th Jun 1936 | Box 101 \ 2 scan0002 | |
| Report comparing the wear and mileage of chamfered and semi-chamfered tyres. | 18th Jun 1936 | Box 101 \ 2 scan0003 | |
| Correspondence concerning a petrol gauge warning light failure on a 22-G-V model. | 19th Jun 1936 | Box 101 \ 2 scan0004 | |
| Responding to a query about the set-up load particulars required on the steering gear. | 20th Jun 1936 | Box 101 \ 2 scan0005 | |
| Buckling flat stay between the exhaust pipe and gearbox, proposing a substitution with a light tube. | 21th Jun 1936 | Box 101 \ 2 scan0006 | |
| Petrol gauge warning light failure due to a fuel leak affecting the wiring insulation. | 21th Jun 1936 | Box 101 \ 2 scan0007 | |
| Replacement of a buckled exhaust pipe stay with a thicker gauge material. | 24th Jun 1936 | Box 101 \ 2 scan0008 | |
| Oil leaks from the air silencer connection to the valve rocker cover and issues with the steering assembly. | 24th Jun 1936 | Box 101 \ 2 scan0009 | |
| The dispatch of a deturbulated cylinder head and a list of new parts to be fitted for a unit in France. | 25th Jun 1936 | Box 101 \ 2 scan0010 | |
| The failure of plug leads, diagnosing the causes of insulation breakdown. | 26th Jun 1936 | Box 101 \ 2 scan0011 | |
| Letter to I. Waller in France, enclosing a drawing for an insulated thermometer to be fitted to 22-G-V. | 26th Jun 1936 | Box 101 \ 2 scan0012 | |
| Trip to Cricklewood, Kingsbury, and Paris to investigate Bentley clutch troubles and test a new cylinder head. | 27th Jun 1936 | Box 101 \ 2 scan0013 | |
| The completion of 10,000 miles of running in France, detailing outstanding work and vehicle performance issues. | 27th Jun 1936 | Box 101 \ 2 scan0014 | |
| Flywheel finish on Bentley and 20/25's models causing clutch judder and the proposed solution. | 27th Jun 1936 | Box 101 \ 2 scan0015 | |
| The fitting of a new exhaust pipe stay and a recommendation to replace the Marles steering box. | 28th Jun 1936 | Box 101 \ 2 scan0016 | |
| Backlash and ball bearing issues in a 22-G-V steering system. | 29th Jun 1936 | Box 101 \ 2 scan0017 | |
| Letter to I. Waller in France asking for information on vapour lock issues in the petrol system of car 22-G-V. | 29th Jun 1936 | Box 101 \ 2 scan0018 | |
| Procedure to correct play in the 22-C-V steering system. | 30th Jun 1936 | Box 101 \ 2 scan0019 | |
| Petrol pump failure due to under-bonnet heat and proposing potential solutions. | 30th Jun 1936 | Box 101 \ 2 scan0020 | |
| Car performance issues related to potential vapour locks and pump diaphragm leaks in hot weather. | 1st Jul 1936 | Box 101 \ 2 scan0021 | |
| Providing further information on the subject of vapour lock on 22-G-V. | 3rd Jul 1936 | Box 101 \ 2 scan0022 | |
| Reporting a cracked thermometer pipe during fitting and requesting a new one. | 4th Jul 1936 | Box 101 \ 2 scan0023 | |
| Letter regarding running issues with car 22-G-V, parts delays, and spark plug failure caused by Ethyl fuel. | 6th Jul 1936 | Box 101 \ 2 scan0024 | |
| New water temperature thermometer due to a fracture. | 7th Jul 1936 | Box 101 \ 2 scan0025 | |
| The performance of a new petrol pump bracket, exhaust pipe stay, and a 'Deterbulated' cylinder head. | 7th Jul 1936 | Box 101 \ 2 scan0026 | |
| Letter to Mr. Waller discussing petrol pump noise and the performance characteristics of a deturbulated cylinder head with a new ignition curve. | 9th Jul 1936 | Box 101 \ 2 scan0027 | |
| Graph showing ignition governor curves for a 25/30 deturbulated head. | 16th May 1932 | Box 101 \ 2 scan0028 | |
| Letter regarding the despatch and fitment of an exhaust pipe stay for a 22-G-V car. | 10th Jul 1936 | Box 101 \ 2 scan0029 | |
| Flexible mounting of a petrol pump base on car 22.G.V. | 11th Jul 1936 | Box 101 \ 2 scan0030 | |
| Telegram about a proposed endurance run for a modified Bentley clutch due to complaints. | 11th Jul 1936 | Box 101 \ 2 scan0031 | |
| Petrol leakage from a gauge tank unit and a comparison of A.C. and K.L.G. sparking plugs. | 11th Jul 1936 | Box 101 \ 2 scan0032 | |
| Comparative report on the performance of car models 21-G-IV and 22-G-V, covering the engine, gearbox, and brakes. | 15th Jul 1936 | Box 101 \ 2 scan0033 | |
| Comparison report on steering, radiator, noise, and clutch performance between two vehicle models. | 15th Jul 1936 | Box 101 \ 2 scan0034 | |
| Fracture in the Bijur pipe of the 22-G-V chassis lubrication system. | 15th Jul 1936 | Box 101 \ 2 scan0035 | |
| Sticking choke issue with a 22-G-V Stromberg Carburetter due to a deformed body. | 15th Jul 1936 | Box 101 \ 2 scan0036 | |
| Comparison report between vehicles 21-G-IV and 22-G-V, detailing engine, gearbox, and brake performance. | 15th Jul 1936 | Box 101 \ 2 scan0037 | |
| Comparative report on the performance of vehicle models 21-G-IV and 22-G-V regarding steering, radiator, and noise. | 15th Jul 1936 | Box 101 \ 2 scan0038 | |
| Cover letter for a corrected 12,000 miles report on vehicle 22-G-V. | 17th Jul 1936 | Box 101 \ 2 scan0039 | |
| Cover sheet for a report on 15,000 miles of vehicle testing in France. | 28th Jul 1936 | Box 101 \ 2 scan0040 | |
| 13,000-mile engine test run in France, detailing performance and issues with engine unit C.17. | 20th Jul 1936 | Box 101 \ 2 scan0041 | |
| Engine and chassis issues and modifications over thousands of miles of testing. | 20th Jul 1936 | Box 101 \ 2 scan0042 | |
| Performance and issues of valves and fittings during mileage testing, including modifications and component failures. | 20th Jul 1936 | Box 101 \ 2 scan0043 | |
| Engine component performance and issues, including pistons, bearings, and carburetters. | 20th Jul 1936 | Box 101 \ 2 scan0044 | |
| Performance issues and observations on a carburetter air silencer, fan, ignition, and flywheel/clutch assemblies. | 20th Jul 1936 | Box 101 \ 2 scan0045 | |
| The performance and comparison of different radiator and radiator shutter configurations, including temperature test results. | 20th Jul 1936 | Box 101 \ 2 scan0046 | |
| Performance, issues, and modifications for various vehicle components. | 20th Jul 1936 | Box 101 \ 2 scan0047 | |
| Findings on frame, fittings, and petrol tank issues after mileage testing. | 20th Jul 1936 | Box 101 \ 2 scan0048 | |
| Fuel gauge, front axle, and steering column performance and maintenance. | 20th Jul 1936 | Box 101 \ 2 scan0049 | |
| The performance of pedals, dash brackets, hydraulic dampers, and springs. | 20th Jul 1936 | Box 101 \ 2 scan0050 | |
| Issues and modifications related to the chassis lubrication system and the front and rear brakes. | 20th Jul 1936 | Box 101 \ 2 scan0051 | |
| Inspection report detailing findings on a rear axle, propellor shaft, and starter motor. | 20th Jul 1936 | Box 101 \ 2 scan0052 | |
| Performance and modification report on various vehicle components including the dynamo, ignition system, windscreen wiper, and horns. | 20th Jul 1936 | Box 101 \ 2 scan0053 | |
| Faults found with the tail lamp, battery, and bodywork by Thrupp & Maberly. | 29th Jul 1936 | Box 101 \ 2 scan0054 | |
| To I.M. Waller requesting the return of a distributor to be fitted to vehicle 21-G-IV. | 29th Jul 1936 | Box 101 \ 2 scan0055 | |
| Short memo regarding a late report due to holidays. | 5th Aug 1936 | Box 101 \ 2 scan0056 | |
| Requesting the construction of a new malleable iron steering gear for model 22-C-V to standardise on the 25/30 HP. | 5th Aug 1936 | Box 101 \ 2 scan0057 | |
| Sending two sets of Delco Remy Distributor arms and contacts to G.W. Hancock in France. | 13th Aug 1936 | Box 101 \ 2 scan0058 | |
| Dispatch of two sets of British made Delco Remy distributor arms. | 13th Aug 1936 | Box 101 \ 2 scan0059 | |
| Request for a new exhaust manifold, Marles steering, and Dunlop tyres for vehicle 22.G.V. | 15th Aug 1936 | Box 101 \ 2 scan0060 | |
| Clarifying which distributors are fitted to the Bentley and 30 HP cars. | 16th Aug 1936 | Box 101 \ 2 scan0061 | |
| Engine inspection report detailing issues with bearings, pistons, valves, and a contracted exhaust manifold. | 16th Aug 1936 | Box 101 \ 2 scan0062 | |
| Engine and steering work on a car, including a new cylinder block and pistons. | 17th Aug 1936 | Box 101 \ 2 scan0063 | |
| Progress report on the build and testing of car 22. G.V. | 17th Aug 1936 | Box 101 \ 2 scan0064 | |
| Request to send a new exhaust manifold complete with two sets of washers to Hancock. | 17th Aug 1936 | Box 101 \ 2 scan0065 | |
| Requesting an order for six Dunlop silent tread tyres to be sent directly to Chateauroux. | 17th Aug 1936 | Box 101 \ 2 scan0066 | |
| S.O.S. from a customer about steering and carburation issues, with a request for assistance. | 18th Aug 1936 | Box 101 \ 2 scan0067 | |
| Fault report detailing numerous issues found on the Paris Trials Car. | 16th Aug 1936 | Box 101 \ 2 scan0068 | |
| Cracked manifold on car 22-G-V and the potential cause related to increased expansion in the new 20/25 model. | 18th Aug 1936 | Box 101 \ 2 scan0069 | |
| On the running status of car 22.G.V., detailing steering issues and plans for further testing. | 18th Aug 1936 | Box 101 \ 2 scan0070 | |
| The urgent dispatch of a steering column and thrust washers for car 22-G-V, and the associated customs duty. | 20th Aug 1936 | Box 101 \ 2 scan0071 | |
| Observations on piston ring wear for the 22 G.V. model. | 20th Aug 1936 | Box 101 \ 2 scan0072 | |
| Steering wander, tyre pressure adjustments, and consumption test results for vehicle 22.G.V. | 20th Aug 1936 | Box 101 \ 2 scan0073 | |
| Fault found in a Marles Steering Box. | 20th Aug 1936 | Box 101 \ 2 scan0074 | |
| Piston ring wear patterns and questioning if this is seen on test bed running. | 20th Aug 1936 | Box 101 \ 2 scan0075 | |
| Road test to Paris evaluating steering modifications and performance characteristics. | 22th Aug 1936 | Box 101 \ 2 scan0076 | |
| Urging the installation of a new steering gear on chassis 22-G-V for mileage testing. | 24th Aug 1936 | Box 101 \ 2 scan0077 | |
| Development and testing of the Ph.III, 20/25, and Bentley models. | 24th Aug 1936 | Box 101 \ 2 scan0078 | |
| Bearing tests, steering issues, geometry, and the effect of tyres on vehicle stability. | 24th Aug 1936 | Box 101 \ 2 scan0079 | |
| Dispatch note to G.W. Hancock in France regarding Dunlop wire wheels and tyres for trial. | 25th Aug 1936 | Box 101 \ 2 scan0080 | |
| Despatch note for two 7 x 18 Dunlop Wire Wheels with tyres to G.W. Hancock in France. | 25th Aug 1936 | Box 101 \ 2 scan0081 | |
| Letter addressing a customer's complaint about steering wander on a 25 HP chassis. | 25th Aug 1936 | Box 101 \ 2 scan0082 | |
| Modification of steering components for model 22-G-V due to supplier delays. | 26th Aug 1936 | Box 101 \ 2 scan0083 | |
| Steering tests for a 30 HP car and modifications to a Bentley's front axle and brake mechanism. | 27th Aug 1936 | Box 101 \ 2 scan0084 | |
| Attaching a copy of a document concerning the steering of vehicle 22-G-V in France. | 29th Aug 1936 | Box 101 \ 2 scan0085 | |
| Steering stability tests related to pivot lubrication, tyre sizes, and tyre pressures. | 27th Aug 1936 | Box 101 \ 2 scan0086 | |
| Progress of the 22-G-V chassis and the imperative need for testing at Derby. | 30th Jan 1936 | Box 101 \ 2 scan0087 | |
| Carburation fault on a 25/30 model and confirming the size of the metering jet used to resolve it. | 31th Aug 1936 | Box 101 \ 2 scan0088 | |
| Comparative test report on standard versus deturbulated cylinder heads. | 2nd Sep 1936 | Box 101 \ 2 scan0089 | |
| Partial petrol pump failure experienced in hot weather. | 2nd Sep 1936 | Box 101 \ 2 scan0090 | |
| Graph of top gear acceleration curves comparing standard and deturbulate cylinder heads with a modified ignition governor. | 29th Aug 1936 | Box 101 \ 2 scan0091 | |
| Arrangements to despatch a replacement steering column for Chassis 22 G-V undergoing trials in France. | 3rd Sep 1936 | Box 101 \ 2 scan0092 | |
| To I.M. Waller regarding the failure of a Petrol Pump on car 22-G-V. | 4th Sep 1936 | Box 101 \ 2 scan0093 | |
| Request to examine the condition of servo fabrics and cams on two specific cars for standardization. | 11th Sep 1936 | Box 101 \ 2 scan0094 | |
| Dispatch of an anti-roll rod and the requirement for extra low rating front springs for car 22-G-V. | 16th Sep 1936 | Box 101 \ 2 scan0095 | |
| Letter to I.M. Waller in France regarding engine bearing failure, oil pressure, and flywheel balance issues. | 19th Sep 1936 | Box 101 \ 2 scan0096 | |
| Confirming the dispatch of an aluminised front expansion box and intermediate pipe for fitting to vehicle 22-G-V. | 21th Sep 1936 | Box 101 \ 2 scan0097 | |
| Despatch of front roll rod parts and front springs to Paris for car 22-C-V. | 21th Sep 1936 | Box 101 \ 2 scan0098 | |
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