| Description | Date | Identifier | |
| List of modifications for a car chassis and exhaust system to gain experience with Hall's metal bearings. | 25th May 1936 | Box 83 \ 1 scan0118 | |
| List of specifications and modifications for various chassis and engine components. | 25th May 1936 | Box 83 \ 1 scan0119 | |
| Test report from a visit to Brooklands detailing car specifications and fuel consumption results. | 28th May 1936 | Box 83 \ 1 scan0120 | |
| Performance comparison of small versus large carburetters and induction pipes, detailing lap times and speeds. | 28th May 1936 | Box 83 \ 1 scan0121 | |
| The front hub specification for a 10,000-mile test in France. | 3rd Jun 1936 | Box 83 \ 1 scan0122 | |
| Cancelling the new axle control for the Bentley due to the priority of the Wraith, with instructions for the existing axle control on chassis 6-B-IV. | 8th Jun 1936 | Box 83 \ 1 scan0123 | |
| Exceptions for the radiator on car 6-B-IV. | 9th Jun 1936 | Box 83 \ 1 scan0124 | |
| Tests conducted on a Bentley induction system using a spark gap. | 11th Jun 1936 | Box 83 \ 1 scan0125 | |
| Table of spark gap measurements in m/m for 6 cylinders and a coil under various speed and load conditions. | 12th Jun 1936 | Box 83 \ 1 scan0126 | |
| Confirming a plan to run Hyco material on 6-B-IV and prepare levers for testing alternative pedal pressures. | 12th Jun 1936 | Box 83 \ 1 scan0127 | |
| Instruction to fit a modification to the outside petrol filler of a car, as per another specification. | 12th Jun 1936 | Box 83 \ 1 scan0128 | |
| The completion of a 15,000-mile test for a 6-B-1V model, highlighting potential delays with the crankshaft. | 1st Jun 1936 | Box 83 \ 1 scan0129 | |
| Suggesting using one of two pre-assembled sets of parts rather than building a new one to specification N.Sch.4798. | 13th Jun 1936 | Box 83 \ 1 scan0130 | |
| New clutch and operating lever for a chassis with flexible engine mounting and cantilever pedals. | 15th Jun 1936 | Box 83 \ 1 scan0131 | |
| Requesting comments on a schematic and asking for a follow-up on a part fitted to a car. | 16th Jun 1936 | Box 83 \ 1 scan0132 | |
| Change of clutch and pilot bearing specification following whirling tests. | 22th Jun 1936 | Box 83 \ 1 scan0133 | |
| Instruction to fit 'Perfect' Oil Seals to the servo countershaft of chassis N.Sch.4715. | 23th Jun 1936 | Box 83 \ 1 scan0134 | |
| Engine unit modifications for the 6-B-IV car destined for France. | 24th Jun 1936 | Box 83 \ 1 scan0135 | |
| Modification instructions for car 6-B-IV, including fitting an anti-judder axle and re-lining the brakes. | 25th Jun 1936 | Box 83 \ 1 scan0136 | |
| Testing of engine 6-B-IV with small and large carburettors to assess horsepower. | 1st Jul 1936 | Box 83 \ 1 scan0137 | |
| Note confirming reserved car accommodation on the night boat from Southampton to Le Havre. | 1st Jul 1936 | Box 83 \ 1 scan0138 | |
| Revised specification for a 6-B-IV exhaust system intended for a 15,000-mile test in France. | 2nd Jul 1936 | Box 83 \ 1 scan0139 | |
| The urgent procurement of parts for a new front axle control scheme. | 6th Jul 1936 | Box 83 \ 1 scan0140 | |
| Request to check the finger setting and plate thickness of a 6-B-IV 11' clutch before fitting. | 6th Jul 1936 | Box 83 \ 1 scan0141 | |
| Post-test modifications and fault rectifications for a B-22 unit. | 9th Jul 1936 | Box 83 \ 1 scan0142 | |
| Road test report detailing impressions of a Bentley vehicle's performance. | 1st Aug 1936 | Box 83 \ 1 scan0143 | |
| Report page detailing car performance regarding cornering and periodical shudders. | 11th Aug 1936 | Box 83 \ 1 scan0144 | |
| Request to send a list of parts to the Paris Depot for a 10,000 miles test car, 6.B.IV. | 11th Aug 1936 | Box 83 \ 1 scan0145 | |
| Instructions for fitting a new anti-judder scheme to the 10,000 miles test car, 6.B.IV. | 11th Aug 1936 | Box 83 \ 1 scan0146 | |
| Dispatch and fitting of a lightened Bentley fan for mileage testing. | 13th Aug 1936 | Box 83 \ 1 scan0147 | |
| Performance report on the 6-B-IV Bentley during a 3,284-mile trip in France. | 15th Aug 1936 | Box 83 \ 1 scan0148 | |
| Vehicle performance issues with fuel, brakes, stabiliser bar, and punctures during testing. | 15th Aug 1936 | Box 83 \ 1 scan0149 | |
| Vehicle performance covering punctures, steering effort, petrol system, and engine smoothness. | 17th Aug 1936 | Box 83 \ 1 scan0150 | |
| Replacement options for a damaged copper pipe and issues with a rear shock damper lever. | 17th Aug 1936 | Box 83 \ 1 scan0151 | |
| Letter to G.W. Hancock in France concerning steering issues on a Bentley trials car and proposed solutions. | 18th Aug 1936 | Box 83 \ 1 scan0152 | |
| Receiving two incorrect copper pipes for a damper governor unit connection, requiring a correct union for fitting. | 19th Aug 1936 | Box 83 \ 1 scan0153 | |
| Customer complaints and engineering solutions for pumps and other vehicle components. | 20th Aug 1936 | Box 83 \ 1 scan0154 | |
| The replacement of a steering mechanism for chassis 22-G-V and avoiding double customs duty. | 20th Aug 1936 | Box 83 \ 1 scan0155 | |
| Requesting the mileage of India Tyres on vehicle 6.B.IV before being taken to the Continent. | 20th Aug 1936 | Box 83 \ 1 scan0156 | |
| Work carried out and tested on a Bentley 6.B.IV vehicle. | 20th Aug 1936 | Box 83 \ 1 scan0157 | |
| To G.W. Hancock regarding the dispatch of a new over-riding control unit. | 21th Aug 1936 | Box 83 \ 1 scan0158 | |
| Confirming the despatch of an Over-riding Control Valve to France. | 21th Aug 1936 | Box 83 \ 1 scan0159 | |
| Instruction to expedite the fitting of anti-jagger brake bits due to a rush to production. | 22th Aug 1936 | Box 83 \ 1 scan0160 | |
| Mileage and fitting of India tyres on car 6-B-IV. | 24th Aug 1936 | Box 83 \ 1 scan0161 | |
| Testing and development progress on the Phantom III, Bentley, and 20/25 models. | 24th Aug 1936 | Box 83 \ 1 scan0162 | |
| Bearing tests, wandering steering issues, and the effect of tyres on handling for trial cars. | 24th Aug 1936 | Box 83 \ 1 scan0163 | |
| To G.W. Hancock regarding vehicle trials, component failures, and upcoming tests for the Phantom III. | 26th Aug 1936 | Box 83 \ 1 scan0164 | |
| Letter concerning new lead weights and studs for a Bentley Bumper Bar to prevent deforming and breakage. | 26th Aug 1936 | Box 83 \ 1 scan0165 | |
| Bentley coming to Paris to have front anti-jagger units fitted. | 27th Aug 1936 | Box 83 \ 1 scan0166 | |
| Steering modifications, tyre pressures, and work on a Bentley's front axle and brake system. | 27th Aug 1936 | Box 83 \ 1 scan0167 | |
| Clarifying the need for a specific union to suit an olive joint on a damper unit control pipe. | 27th Aug 1936 | Box 83 \ 1 scan0168 | |
| The fitment of a propeller shaft damper in conjunction with an 11-inch clutch plate with special liners. | 27th Aug 1936 | Box 83 \ 1 scan0169 | |
| Clarifying the requirement for a specific union to suit an olive joint for the damper unit control pipe. | 27th Aug 1936 | Box 83 \ 1 scan0170 | |
| Query to C.W. Hancock in France seeking confirmation on the function of part 6-B-IV. | 29th Aug 1936 | Box 83 \ 1 scan0171 | |
| Replacement over-riding control unit and new axle control parts for a Bentley. | 31th Aug 1936 | Box 83 \ 1 scan0172 | |
| Short memo about a link fitted between the engine and the front cross member. | 1st Sep 1936 | Box 83 \ 1 scan0173 | |
| Revised specification for a chassis undergoing 15,000-mile tests in France. | 2nd Sep 1936 | Box 83 \ 1 scan0174 | |
| List of proposed or experimental chassis modifications. | 2nd Sep 1936 | Box 83 \ 1 scan0175 | |
| Instructions to check oil supply to the rear axle pinion bearing on car 6-B-IV. | 4th Sep 1936 | Box 83 \ 1 scan0176 | |
| Query about the lack of a locking mechanism for new weights and studs for a bumper bar. | 4th Sep 1936 | Box 83 \ 1 scan0177 | |
| Instructions for fitting a new clutch driven plate and stronger clutch springs to resolve transmission rattles. | 4th Sep 1936 | Box 83 \ 1 scan0178 | |
| The despatch of clutch parts for testing on Chassis 6-B-IV in France. | 4th Sep 1936 | Box 83 \ 1 scan0179 | |
| Reporting on the oil supply in the differential pinion housing after a test. | 8th Sep 1936 | Box 83 \ 1 scan0180 | |
| Technical memo discussing the fitting and testing of a damper unit, pipe line, and new axle controls. | 8th Sep 1936 | Box 83 \ 1 scan0181 | |
| Enclosing a print showing the arrangement of weights and stud on a Bentley bumper bar. | 8th Sep 1936 | Box 83 \ 1 scan0182 | |
| Mileage covered by various parts fitted to a car in France, which was discontinued due to bearing trouble. | 9th Sep 1936 | Box 83 \ 1 scan0183 | |
| Field report detailing a big-end failure and subsequent engine inspection. | 9th Sep 1936 | Box 83 \ 1 scan0184 | |
| Sketches and report on the condition of a failed No. 6 Big End bearing made from Hall's Metal. | 8th Sep 1936 | Box 83 \ 1 scan0185 | |
| Telex message to Waller in France about despatching and fitting new connecting rods. | 10th Sep 1936 | Box 83 \ 1 scan0186 | |
| Sending a set of Bentley Connecting Rods to France for re-testing on chassis 6-B-IV. | 10th Sep 1936 | Box 83 \ 1 scan0187 | |
| To I.M. Waller in France concerning the fitting of new connecting rods and a new clutch. | 10th Sep 1936 | Box 83 \ 1 scan0188 | |
| Confirming receipt of a telegram and the despatch of six connecting rods to Derby. | 10th Sep 1936 | Box 83 \ 1 scan0189 | |
| Repeated failure of a big end bearing in a Bentley engine despite previous modifications. | 11th Sep 1936 | Box 83 \ 1 scan0190 | |
| Request to I.M. Waller to examine the condition of servo fabrics and cams on two specific cars. | 11th Sep 1936 | Box 83 \ 1 scan0191 | |
| Fitting of a new clutch plate and springs, considering existing bearing wear and slip issues. | 11th Sep 1936 | Box 83 \ 1 scan0192 | |
| Engine dismantling report detailing the condition of pistons, cylinders, and valves. | 14th Sep 1936 | Box 83 \ 1 scan0193 | |
| Inspection report on issues found with inlet pipes, oil pump, and various filters. | 14th Sep 1936 | Box 83 \ 1 scan0194 | |
| Telex message containing car repair instructions for Waller in Chateauroux, France. | 14th Sep 1936 | Box 83 \ 1 scan0195 | |
| The inspection and replacement of a clutch plate due to oil contamination and weak springs. | 14th Sep 1936 | Box 83 \ 1 scan0196 | |
| The condition of servos 22.G.V. and 6.B.IV, detailing mileage and wear. | 14th Sep 1936 | Box 83 \ 1 scan0197 | |
| Drawing illustrating the driven and driving fabric components of servo discs. | 13th Sep 1936 | Box 83 \ 1 scan0198 | |
| Message to Waller in France questioning the lack of oil temperature data in Bentley daily reports. | 17th Sep 1936 | Box 83 \ 1 scan0199 | |
| Telegram received by telephone concerning non-standard Rotatham oil pipes and provision for thermometers. | 18th Sep 1936 | Box 83 \ 1 scan0200 | |
| Letter discussing engine bearing wear, oil pressure issues, and flywheel balance on a Bentley. | 19th Sep 1936 | Box 83 \ 1 scan0201 | |
| Letter about sending a petrol pump for testing and feedback on its performance. | 21th Sep 1936 | Box 83 \ 1 scan0202 | |
| Telegram from Robotham to Waller regarding brake drums and bearing failure. | 21th Sep 1936 | Box 83 \ 1 scan0203 | |
| Telegram reporting a failed silencer and worn front brake linings on a Bentley. | 21th Sep 1936 | Box 83 \ 1 scan0204 | |
| Telegram reporting a Bentley intermediate silencer failure and worn out brake linings. | 21th Sep 1936 | Box 83 \ 1 scan0205 | |
| Engine oil temperatures, bearing leakage, and flywheel balance tests. | 21th Sep 1936 | Box 83 \ 1 scan0206 | |
| Car mileage and component wear during testing in France. | 21th Sep 1936 | Box 83 \ 1 scan0207 | |
| Confirming a maximum engine speed of 3,500 r.p.m. following a telegram about possible bearing failure. | 21th Sep 1936 | Box 83 \ 1 scan0208 | |
| Telegram received by telephone detailing a temporary repair to a Hancock Bentley's silencer and brake drum. | 21th Sep 1936 | Box 83 \ 1 scan0209 | |
| Telegram received by telephone from Chateauroux regarding levers. | 22th Sep 1936 | Box 83 \ 1 scan0210 | |
| Telegram received by telephone form. | 22th Sep 1936 | Box 83 \ 1 scan0211 | |
| Telegram requesting the length of wire for Bentley front equaliser side levers. | 22th Sep 1936 | Box 83 \ 1 scan0212 | |
| To I.M. Waller regarding the fitting of a new exhaust manifold and downtake pipe, requesting feedback on exhaust noise. | 22th Sep 1936 | Box 83 \ 1 scan0213 | |
| Request to send replacement brake drums and rivets to testers in Chateauroux, France, due to wear and damage. | 22th Sep 1936 | Box 83 \ 1 scan0214 | |
| Letter to a customer in France regarding the replacement and adjustment of front brakes. | 23th Sep 1936 | Box 83 \ 1 scan0215 | |
| 15,000-mile Bentley programme, concerns over main bearings and a decision to return the car for modifications. | 23th Sep 1936 | Box 83 \ 1 scan0216 | |
| Telex to Hancock in France with instructions for a comparison of small and large bore induction pipes. | 24th Sep 1936 | Box 83 \ 1 scan0217 | |
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