| Description | Date | Identifier | |
| Letter to Messrs. Park Ward & Co. Ltd. about despatching a replacement dummy hub for chassis 6-B-IV. | 18th Jul 1935 | Box 83 \ 1 scan0018 | |
| Despatch request for a dummy hub to be sent to Messrs. Park Ward & Co.Ltd for chassis 6-B-IV. | 18th Jul 1935 | Box 83 \ 1 scan0019 | |
| Letter from coachbuilders Park Ward & Co. Ltd regarding the fitting of a dummy hub. | 16th Jul 1935 | Box 83 \ 1 scan0020 | |
| Preliminary specifications for the engine and chassis of car 6-B-IV. | 13th Aug 1935 | Box 83 \ 1 scan0021 | |
| Return of a Hardy Spicer propeller shaft to its makers for lightening. | 14th Aug 1935 | Box 83 \ 1 scan0022 | |
| Modification to rear axle tubes for the 6-B-IV model due to failures. | 19th Aug 1935 | Box 83 \ 1 scan0023 | |
| Requesting details of departures from standard production 'G' series, to be fitted to 6-B-IV for a 10,000-mile test in France. | 27th Aug 1935 | Box 83 \ 1 scan0024 | |
| List of chassis components. | 27th Aug 1935 | Box 83 \ 1 scan0025 | |
| List of engine components, likely a table of contents. | 29th Aug 1935 | Box 83 \ 1 scan0026 | |
| Requesting to fit Bijur junctions in Hot Brass Pressings instead of cast-iron for chassis lubrication. | 29th Aug 1935 | Box 83 \ 1 scan0027 | |
| Internal request to order Electrical Pump Units and Bakelite Valves from the S.U. Co. for chassis 6-B-IV. | 29th Aug 1935 | Box 83 \ 1 scan0028 | |
| Build specification document for a chassis intended for a 10,000-mile test in France. | 31th Aug 1935 | Box 83 \ 1 scan0029 | |
| Specification sheet detailing modifications to petrol tanks, pumps, pedals, dashbrackets, lubrication, and shock dampers. | 31th Aug 1935 | Box 83 \ 1 scan0030 | |
| Specifications for brake equalisers, propeller shaft, axles, and radiator fittings. | 31th Mar 1935 | Box 83 \ 1 scan0031 | |
| List of specifications and modifications for vehicle systems including exhaust, gearbox, and electrical. | 31th Aug 1935 | Box 83 \ 1 scan0032 | |
| Specification for a Large Bore Engine unit, detailing components and part numbers. | 31th Aug 1935 | Box 83 \ 1 scan0033 | |
| Specification sheet for cylinder head piece E2560 and related engine components. | 31th Aug 1935 | Box 83 \ 1 scan0034 | |
| Specification sheet listing various engine and chassis components with their part numbers. | 31th Aug 1935 | Box 83 \ 1 scan0035 | |
| Requesting an update on the readiness of a 'Large Bore Bentley' engine and its parts for shipment to France. | 3rd Sep 1935 | Box 83 \ 1 scan0036 | |
| Request to urgently manufacture an air intake for a new 3,500 Bore Bentley induction system. | 3rd Sep 1935 | Box 83 \ 1 scan0037 | |
| Request to trial a Stevenson's Jacking scheme on chassis 6-B-IV. | 11th Sep 1935 | Box 83 \ 1 scan0038 | |
| Request to fit a Bentley chassis with a noise insulation scheme for a 10,000-mile test in France. | 13th Sep 1935 | Box 83 \ 1 scan0039 | |
| Specification for a 6-B-IV exhaust system for a 10,000 miles test in France. | 13th Sep 1935 | Box 83 \ 1 scan0040 | |
| Internal instruction memo detailing a list of parts to be fitted to chassis 5-B-IV. | 18th Sep 1935 | Box 83 \ 1 scan0041 | |
| Requesting the weight of a lightened petrol tank to be fitted to 6-B-IV. | 20th Sep 1935 | Box 83 \ 1 scan0042 | |
| Provision of 14-inch brake drums for model 6-B-IV. | 20th Sep 1935 | Box 83 \ 1 scan0043 | |
| Instructing that a car model 6-B-IV destined for France should not have open venting holes in its brake drums, correcting a design mistake. | 23th Sep 1935 | Box 83 \ 1 scan0044 | |
| Changes to the petrol system for chassis 6-B-IV due to a delay in the original scheme. | 3rd Oct 1935 | Box 83 \ 1 scan0045 | |
| Requesting an alteration to the brake pedal stop on chassis 6-B-IV to address pitting of floating cams. | 7th Oct 1935 | Box 83 \ 1 scan0046 | |
| Request to fit a set of Hartford front shock absorbers and brackets, originally for car 5-B-IV, to car 6-B-IV. | 11th Oct 1935 | Box 83 \ 1 scan0047 | |
| Request to order a pair of Hartford shock absorbers, Type 306.M, for the front of chassis 6-B-IV. | 22th Oct 1935 | Box 83 \ 1 scan0048 | |
| The use of a single tie rod for the radiator on Chassis 6-B-IV. | 22th Oct 1935 | Box 83 \ 1 scan0049 | |
| Updated schemes for the 6-B-IV petrol system, including the addition of a new filter. | 4th Nov 1935 | Box 83 \ 1 scan0050 | |
| 15,000-mile comparative test of different valve types in a B-19 unit. | 5th Nov 1935 | Box 83 \ 1 scan0051 | |
| Specification for a large bore Bentley car, detailing engine and chassis components. | 6th Nov 1935 | Box 83 \ 1 scan0052 | |
| Numbered list of engineering modifications and component specifications, page 2. | 6th Nov 1935 | Box 83 \ 1 scan0053 | |
| Request to detail and manufacture two sets of modified Cadillac-type flexible fan blades and adaptors to fit Bentley and 20/25 fan hubs. | 6th Nov 1935 | Box 83 \ 1 scan0054 | |
| Querying the specifications of the final big bore engine, comparing production plans with previously tested components. | 7th Nov 1935 | Box 83 \ 1 scan0055 | |
| Fitting of 45° timing gears and new dynamo gears for various units. | 14th Nov 1935 | Box 83 \ 1 scan0056 | |
| Listing cars and jobs awaiting action in the workshop. | 14th Nov 1935 | Box 83 \ 1 scan0057 | |
| The positive performance of Bentley ratio timing gears fitted to a 25 HP engine before testing in France. | 16th Nov 1935 | Box 83 \ 1 scan0058 | |
| 'Sg' to 'Hs/Rm' asking when car 6-B-IV is likely to be sent to France. | 19th Nov 1935 | Box 83 \ 1 scan0059 | |
| A car held up for bearings, with an estimated departure for France. | 21th Nov 1935 | Box 83 \ 1 scan0060 | |
| Required road springs for car 21-G-IV, confirming a set is available in stores. | 26th Nov 1935 | Box 83 \ 1 scan0061 | |
| Order and fitting of a special bumper bar for chassis 6-B-IV. | 28th Nov 1935 | Box 83 \ 1 scan0062 | |
| Requesting the fitting of a carburetter air cleaner, silencer, and ignition control for Large Bore Bentley & 25 HP cars. | 3rd Dec 1935 | Box 83 \ 1 scan0063 | |
| Trial of torque reaction dampers on car 6-B-IV to improve alignment. | 3rd Dec 1935 | Box 83 \ 1 scan0064 | |
| Request to fit schemes for raising the exhaust tail pipe and for high tension wiring on a Bentley Car. | 5th Dec 1935 | Box 83 \ 1 scan0065 | |
| Request for a plain bonnet with flip-flap shutters to be fitted to a Bentley, requiring a new design for a smaller front bonnet shutter. | 6th Dec 1935 | Box 83 \ 1 scan0066 | |
| Request to fit a clutch pedal spring to car Rm.26, in conjunction with the oilite cage in the trunnion bearing. | 6th Dec 1935 | Box 83 \ 1 scan0067 | |
| Instructing the fitting of an aluminium packing between the carburetter and induction pipe. | 9th Dec 1935 | Box 83 \ 1 scan0068 | |
| Letter to Messrs. Park Ward & Co. Ltd. regarding the fitting of a silent bloc mounting to an experimental Bentley. | 11th Dec 1935 | Box 83 \ 1 scan0069 | |
| Clarifying the testing status and development issues with the Big Bore Bentley and model 6-B-IV, specifically regarding bearing and piston failures. | 14th Dec 1935 | Box 83 \ 1 scan0070 | |
| List of modifications for the engine unit and chassis. | 14th Dec 1935 | Box 83 \ 1 scan0071 | |
| List of vehicle modifications and a status update on the big bore Bentley engine. | 14th Dec 1935 | Box 83 \ 1 scan0072 | |
| List of modifications to an existing specification, divided into engine and chassis units. | 17th Dec 1935 | Box 83 \ 1 scan0073 | |
| List of vehicle modifications and their progress status. | 17th Dec 1935 | Box 83 \ 1 scan0074 | |
| Requesting the fitting of a bumper bar to car 6-B-IV. | 18th Dec 1935 | Box 83 \ 1 scan0075 | |
| Tests on a stabilizing bumper bar for the Bentley. | 21th Dec 1935 | Box 83 \ 1 scan0076 | |
| Analysis of vibration response curves for a bumper on a Bentley 6-B-IV vehicle. | 21th Dec 1935 | Box 83 \ 1 scan0077 | |
| Response curves showing horizontal transverse amplitude and steering wheel vibration for different vehicle and bumper configurations. | 6th Jan 1936 | Box 83 \ 1 scan0078 | |
| Instruction to ensure the correct operating lever is used with the stiffened clutch pedal scheme. | 6th Jan 1936 | Box 83 \ 1 scan0079 | |
| Order for an alternative, larger radiator matrix for the 6-B-IV model. | 9th Jan 1936 | Box 83 \ 1 scan0080 | |
| Confirming a conversation and requesting the fitting of a spring to the calorstat for various models. | 14th Jan 1936 | Box 83 \ 1 scan0081 | |
| Instructions to fit a set of 4 engine tie-links in cable form to a Bentley 6-B-IV car. | 14th Jan 1936 | Box 83 \ 1 scan0082 | |
| Agreeing to a standard spring shackling method due to fitting constraints with a bumper bar and shock absorbers. | 16th Jan 1936 | Box 83 \ 1 scan0083 | |
| Instructions for fitting a new rubber-mounted petrol pump to a Bentley car. | 16th Jan 1936 | Box 83 \ 1 scan0084 | |
| Notice regarding a filter change in the petrol system. | 21th Jan 1936 | Box 83 \ 1 scan0085 | |
| Correcting the mounting for spring-loaded anti-rattle shutters for the 6-B-IV model. | 21th Jan 1936 | Box 83 \ 1 scan0086 | |
| Final complete specification sheet for model 6-B-IV, detailing frame, fittings, and springs. | 23th Jan 1936 | Box 83 \ 1 scan0087 | |
| List of specifications and modifications for various vehicle components. | 23th Jan 1936 | Box 83 \ 1 scan0088 | |
| Specification sheet for lubrication, dampers, and brake equaliser mechanisms. | 23th Jan 1936 | Box 83 \ 1 scan0089 | |
| Specification sheet for various chassis components including brakes, axles, and steering. | 23th Jan 1936 | Box 83 \ 1 scan0090 | |
| Specifications for radiator, exhaust fittings, and bonnet components. | 23th Jan 1936 | Box 83 \ 1 scan0091 | |
| Specification list for various vehicle components and systems. | 23th Jan 1936 | Box 83 \ 1 scan0092 | |
| Specification sheet for engine unit 6-B-IV - B-19, detailing components and part numbers. | 23th Jan 1936 | Box 83 \ 1 scan0093 | |
| Specification sheet detailing modifications and parts for engine components like valves, camshaft, and various drive gears. | 23th Jan 1936 | Box 83 \ 1 scan0094 | |
| List of engine components with their associated part or drawing numbers. | 1st Jan 1936 | Box 83 \ 1 scan0095 | |
| List of specifications for various automotive components including fan, clutch, and gearbox. | 23th Jan 1936 | Box 83 \ 1 scan0096 | |
| Specifications for a Servo Drive and Electric Petrol Pump. | 23th Jan 1936 | Box 83 \ 1 scan0097 | |
| Electrical specification for the 6-B-IV - B-19 unit. | 23th Jan 1936 | Box 83 \ 1 scan0098 | |
| Electrical specification sheet listing various components and their requirements. | 23th Jan 1936 | Box 83 \ 1 scan0099 | |
| Electrical specification sheet detailing the ignition coil, horns, windscreen wiper, and fog lamp. | 23th Jan 1936 | Box 83 \ 1 scan0100 | |
| Proposing the rebuild of car 5-B-IV using a new boxed-in frame. | 30th Jan 1936 | Box 83 \ 1 scan0101 | |
| List of alterations required to rebuild chassis 5-B-IV into a motor using a Bentley stiffened frame. | 30th Jan 1936 | Box 83 \ 1 scan0102 | |
| The order of a 58 m.m. Mark VI Marston Matrix for a 6-B-IV model. | 31th Jan 1936 | Box 83 \ 1 scan0103 | |
| Issues with a flimsy aluminium radiator shutter support plate and a recommendation for a stiffer steel replacement. | 6th Feb 1936 | Box 83 \ 1 scan0104 | |
| The lack of a proper detail drawing for clutch operating cross shaft modifications and proposing a new scheme. | 10th Feb 1936 | Box 83 \ 1 scan0105 | |
| Instruction to fit a 'Superflexit' flexible petrol pipe to chassis 6-B-IV. | 10th Feb 1936 | Box 83 \ 1 scan0106 | |
| Nine faults found on a car during various runs. | 4th Mar 1936 | Box 83 \ 1 scan0107 | |
| Road test report on car 6-B-IV detailing handling issues and suggesting improvements. | 17th Mar 1936 | Box 83 \ 1 scan0108 | |
| Request to produce a duplicate set of front roll rod parts for car 6-B-IV. | 18th Mar 1936 | Box 83 \ 1 scan0109 | |
| Performance test results for 6-B-IV and 3-B-IV engines at Brooklands. | 2nd Apr 1936 | Box 83 \ 1 scan0110 | |
| List of experiments on engine 6-B-IV to test for engine roughness at up to 4500 r.p.m. | 28th Apr 1936 | Box 83 \ 1 scan0111 | |
| Request to manufacture one Mirror Holder for experiments on a 6-B-IV. | 30th Apr 1936 | Box 83 \ 1 scan0112 | |
| Requesting the modification of an isolated change gear lever for a Bentley. | 18th May 1936 | Box 83 \ 1 scan0113 | |
| Requesting the fitting of a sample bellows to the outside petrol filler system on 6-B-IV. | 18th May 1936 | Box 83 \ 1 scan0114 | |
| Outlining proposed engine and chassis modifications for the next 15,000 miles test. | 22th May 1936 | Box 83 \ 1 scan0115 | |
| Numbered list of vehicle component modifications and experimental updates. | 22th May 1936 | Box 83 \ 1 scan0116 | |
| Specifications for an exhaust system for a 6-B-IV model undergoing a 15,000 miles test. | 22th May 1936 | Box 83 \ 1 scan0117 | |
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