| Description | Date | Identifier | |
| Comparison and breakdown of car body weights for a Bentley saloon, referencing other models. | 1st Dec 1934 | Box 82 \ 3 scan0070 | |
| Letter to S. Smith & Sons regarding tests and fitting issues of Jackalls on a 5-B-IV model. | 1st Dec 1934 | Box 82 \ 3 scan0071 | |
| Letter concerning the preparation of modified brackets and arranging an inspection. | 1st Dec 1934 | Box 82 \ 3 scan0072 | |
| The order of two low-rating front springs. | 4th Dec 1934 | Box 82 \ 3 scan0073 | |
| Order and fitting of Firths 700+ type low rating front springs for car 5-B-IV. | 4th Dec 1934 | Box 82 \ 3 scan0074 | |
| To RHC regarding modifications to the front cross member and sheet metal floorboards for Mr. Fairey's Bentley S car. | 5th Dec 1934 | Box 82 \ 3 scan0075 | |
| Weight of Experimental Car 5-B-IV, comparing it to standard models and a maximum weight limit. | 12th Dec 1934 | Box 82 \ 3 scan0076 | |
| Requesting a car be returned to Park Wards to fix rattles before a 10,000-mile run in France. | 13th Dec 1934 | Box 82 \ 3 scan0077 | |
| Clutch failure at 2000 revs and a list of five other faults requiring investigation on a test car. | 13th Dec 1934 | Box 82 \ 3 scan0078 | |
| Severe clutch issue on car B-10, preventing testing of the front axle control. | 17th Dec 1934 | Box 82 \ 3 scan0079 | |
| Revised chassis specification list for a 10,000 mile Bentley 5-B-IV. | 20th Dec 1934 | Box 82 \ 3 scan0080 | |
| List of proposed vehicle and engine modifications, with handwritten amendments. | 20th Dec 1934 | Box 82 \ 3 scan0081 | |
| List of typed and handwritten modifications, additions, deletions, and queries for a specific vehicle build. | 20th Dec 1934 | Box 82 \ 3 scan0082 | |
| Component changes for the 10,000 Miles Bentley 5-B-IV. | 21th Dec 1934 | Box 82 \ 3 scan0083 | |
| Modifications to a Bentley Chassis to address 'Front Brake Thumps' and servo efficiency. | 1st Jan 1935 | Box 82 \ 3 scan0084 | |
| List of items to be tested on the servo of a Bentley Chassis. | 1st Jan 1935 | Box 82 \ 3 scan0085 | |
| Query about implementing a new scheme on the 5-B-IV Bentley chassis, referencing minutes from a meeting. | 1st Jan 1935 | Box 82 \ 3 scan0086 | |
| Improved scheme to waterproof the drums on a Bentley Chassis. | 1st Jan 1935 | Box 82 \ 3 scan0087 | |
| Clarifying a reference number about an axle control device for a Bentley Chassis and its testing. | 2nd Jan 1935 | Box 82 \ 3 scan0088 | |
| Replying that no design has yet been issued for a feature on the Bentley Chassis. | 2nd Jan 1935 | Box 82 \ 3 scan0089 | |
| From Sg. to Hs. regarding the standardisation of items from a 15,000-mile car test. | 1st Jan 1935 | Box 82 \ 3 scan0090 | |
| Issues with the Bentley Switchbox fouling the instrument board and a proposed solution. | 4th Jan 1935 | Box 82 \ 3 scan0091 | |
| Examination report detailing component failures on a front axle after high-speed braking tests. | 1st Jan 1935 | Box 82 \ 3 scan0092 | |
| Damage to the Front Anchorage, specifically bent radius rods and a broken eye bolt. | 1st Jan 1935 | Box 82 \ 3 scan0093 | |
| Blueprint illustrating distortion in a SB IV front axle. | 4th Jan 1935 | Box 82 \ 3 scan0094 | |
| Report on a 5-B-IV front axle failure and recommendations for design changes. | 7th Jan 1935 | Box 82 \ 3 scan0095 | |
| List of standardised items for the 4-B-IV 15,000 Miles Car. | 7th Jan 1935 | Box 82 \ 3 scan0096 | |
| Numbered list of modifications and components for chassis and engine units. | 7th Jan 1935 | Box 82 \ 3 scan0097 | |
| List of weight particulars, showing increases and decreases, for the 5-B-IV 10,000 Miles Car. | 10th Jan 1935 | Box 82 \ 3 scan0098 | |
| Increase in chassis weight. | 10th Jan 1935 | Box 82 \ 3 scan0099 | |
| Weight summary detailing the increase and decrease of non-standard parts for the Experimental Car 5-B-IV. | 10th Jan 1935 | Box 82 \ 3 scan0100 | |
| Detailed weight analysis of a car's coachwork, accessories, and components. | 10th Jan 1935 | Box 82 \ 3 scan0101 | |
| Request for a replacement red brake-stop lamp glass and a ventilator window for a Bentley B-23-AE. | 11th Jan 1935 | Box 82 \ 3 scan0102 | |
| Technical memo detailing the causes and solutions for noisy windscreen wipers on a 5-B-IV model. | 15th Jan 1935 | Box 82 \ 3 scan0103 | |
| Requesting the fitment of a correct length pendulum lever for the Peregrine steering on model 5-B-IV. | 21th Jan 1935 | Box 82 \ 3 scan0104 | |
| The incorrect pendulum lever length for the 5-B-IV steering system. | 21th Jan 1935 | Box 82 \ 3 scan0105 | |
| Urgent internal memo requesting the adaptation of a successful water excluder for a standard drum. | 22th Jan 1935 | Box 82 \ 3 scan0106 | |
| Steering tests, detailing initial handling, tyre pressure adjustments, and brake rope issues. | 8th Feb 1935 | Box 82 \ 3 scan0107 | |
| Requesting updates on various Bentley car developments for an upcoming visit, covering an experimental car, supercharging, and brake issues. | 8th Feb 1935 | Box 82 \ 3 scan0108 | |
| List of vehicle complaints and queries regarding modifications, features, and performance. | 8th Feb 1935 | Box 82 \ 3 scan0109 | |
| Technical update regarding the experimental Bentley car 5.B.IV, supercharging, adjustable tappets, and brake complaints. | 12th Feb 1935 | Box 82 \ 3 scan0110 | |
| Updates on modifications and issues like brake fading, clutch slip, and steering joggles on various car models. | 12th Feb 1935 | Box 82 \ 3 scan0111 | |
| Continued discussion on standardising the Wilson Gear Box, noting it could be increased in diameter. | 12th Feb 1935 | Box 82 \ 3 scan0112 | |
| Modifications and parts required for the front springing and steering system on test car 5-B-IV. | 13th Feb 1935 | Box 82 \ 3 scan0113 | |
| Instruction to fit Cotton Duck friction material to the servo balancer arm suspension on chassis 5-E-IV. | 14th Feb 1935 | Box 82 \ 3 scan0114 | |
| Engine and chassis modifications for the 10,000 Miles Bentley 5-B-IV. | 15th Feb 1935 | Box 82 \ 3 scan0115 | |
| List of modifications to be carried out on a vehicle, including exhaust, speed lever, and axle control. | 15th Feb 1935 | Box 82 \ 3 scan0116 | |
| Request to fit available parts to a 5-B-IV Servo. | 19th Feb 1935 | Box 82 \ 3 scan0117 | |
| The first-time fitting of centrally mounted wings and radiator to a Bentley, potentially affecting a delivery to France. | 21th Feb 1935 | Box 82 \ 3 scan0118 | |
| From Sg. to Hs/Rm. regarding fitting centrally mounted wings and a radiator to a Bentley. | 22th Feb 1935 | Box 82 \ 3 scan0119 | |
| Investigation into the cause of 'chunking' in the drive transmission, with a comparison to Buick vehicles. | 22th Feb 1935 | Box 82 \ 3 scan0120 | |
| Chunking noise from the drive and hubs. | 22th Feb 1935 | Box 82 \ 3 scan0121 | |
| Parts and modifications to be fitted to a specific chassis before dispatch to France. | 27th Feb 1935 | Box 82 \ 3 scan0122 | |
| The progress of a Bentley car and a suggestion to test a new lubricating oil. | 27th Feb 1935 | Box 82 \ 3 scan0123 | |
| Delays on the Bentley Car 5-B-IV and the choice of oil for testing new connecting rods. | 26th Feb 1935 | Box 82 \ 3 scan0124 | |
| Tests conducted on a Park Ward Body - Bentley to identify and cure wind noises. | 28th Feb 1935 | Box 82 \ 3 scan0125 | |
| Tests conducted to reduce front door edge, gap, and hinge noise at speeds of 40 MPH and above. | 28th Feb 1935 | Box 82 \ 3 scan0126 | |
| Wind noise tests for front ventilating windows at speeds of 50 m.p.h. and upwards. | 28th Feb 1935 | Box 82 \ 3 scan0127 | |
| Tests taken for wind noises on a Park Ward Body Bentley. | 28th Feb 1935 | Box 82 \ 3 scan0128 | |
| Noise reduction tests on front door edges, gaps, and hinges. | 28th Feb 1935 | Box 82 \ 3 scan0129 | |
| Wind noise tests for front ventilating windows at speeds of 50 m.p.h. and upwards. | 28th Feb 1935 | Box 82 \ 3 scan0130 | |
| Requesting the fitting of four special wheel hub caps to vehicle 5-B-IV. | 1st Mar 1935 | Box 82 \ 3 scan0131 | |
| List of reported body noises and other faults found on a vehicle. | 2nd Mar 1935 | Box 82 \ 3 scan0132 | |
| Broken lightened front road spring and the plan to fit a standard replacement on vehicle 5-B-IV. | 7th Mar 1935 | Box 82 \ 3 scan0133 | |
| Wind noise tests for a Bentley Park Ward body, detailing sealing issues with the sliding roof and doors. | 7th Mar 1935 | Box 82 \ 3 scan0134 | |
| The design and potential noise issues of front ventilating windows for the Spectre 3 model. | 7th Mar 1935 | Box 82 \ 3 scan0135 | |
| Modification to the lamp bracket for a Bentley 5 B IV model. | 7th Mar 1935 | Box 82 \ 3 scan0136 | |
| The fitting of a lightened torque reaction damper to unit 5-B-IV. | 8th Mar 1935 | Box 82 \ 3 scan0137 | |
| Progress on experimental car work, including updates on a Bentley model, supercharging, and brake design. | 11th Mar 1935 | Box 82 \ 3 scan0138 | |
| Updates on water excluders, judders, isolated change gear levers, and lower geared back axles. | 11th Mar 1935 | Box 82 \ 3 scan0139 | |
| The worst features of Bentley cars, focusing on fading brakes and performance issues due to increased weight. | 11th Mar 1935 | Box 82 \ 3 scan0140 | |
| Improvements to the clutch, performance, and rear axle ratio for the 20/25 HP model. | 11th Mar 1935 | Box 82 \ 3 scan0141 | |
| List of experimental items fitted to Chassis 5-B-IV. | 11th Mar 1935 | Box 82 \ 3 scan0142 | |
| Need for a rubber mounting to isolate the fuel pump from the dashboard. | 12th Mar 1935 | Box 82 \ 3 scan0143 | |
| Responding to suggestions for curing wind noise on a Park Ward Bentley, highlighting the sun roof as a primary source. | 12th Mar 1935 | Box 82 \ 3 scan0144 | |
| Typed telegram regarding noise insulation parts for a Friday delivery. | 14th Mar 1935 | Box 82 \ 3 scan0145 | |
| Investigation and resolution of wind noise from a sun roof on a Spectre II body. | 16th Mar 1935 | Box 82 \ 3 scan0146 | |
| Instruction of Park Wards on carrying out noise insulation work for experimental cars. | 16th Mar 1935 | Box 82 \ 3 scan0147 | |
| Letter to Park Ward & Co. regarding modifications to a Bentley 5 B IV, including fitting taper pins to lamp brackets and a rubber seal to the sunshine roof. | 18th Mar 1935 | Box 82 \ 3 scan0148 | |
| Request to urgently despatch two Bentley wing stays for side spare wheels to Messrs. Park Ward & Co. Ltd. | 21th Mar 1935 | Box 82 \ 3 scan0149 | |
| Short typed message, likely a telegram, arranging a collection at St. Pancras station. | 21th Mar 1935 | Box 82 \ 3 scan0150 | |
| Request to fit a modified LeC.3662 Cylinder Head to a B.10 Unit (54B-IV Chassis) before a 10,000 miles test. | 22th Mar 1935 | Box 82 \ 3 scan0151 | |
| Requirements and modifications for a car's exhaust system. | 25th Mar 1935 | Box 82 \ 3 scan0152 | |
| New 122A springs for the Bentley V, clarifying they are new and avoid the need for plate changes. | 25th Mar 1935 | Box 82 \ 3 scan0153 | |
| Requesting the fitting of new lightened front road springs and associated alterations to a Bentley V car. | 25th Mar 1935 | Box 82 \ 3 scan0154 | |
| List of four additional instructions for a chassis, concerning the brakes, clutch, propeller shaft, and gearbox. | 25th Mar 1935 | Box 82 \ 3 scan0155 | |
| Requesting the fitment of three 'Corru-Joint' exhaust manifold washers to the 10,000 Miles Car. | 25th Mar 1935 | Box 82 \ 3 scan0156 | |
| Requesting the lightening of a Bentley fan using aluminium blades. | 25th Mar 1935 | Box 82 \ 3 scan0157 | |
| Letter to S. Smith & Sons regarding fractured 'Jackall' brackets on vehicle 5-B-IV and arranging for repairs. | 27th Mar 1935 | Box 82 \ 3 scan0158 | |
| Letter to S. Smith & Sons regarding a delay in fitting work and cancelling a mechanic's visit. | 26th Mar 1935 | Box 82 \ 3 scan0159 | |
| Request for a set of intermediate lightness springs for car 5-B-IV going to France. | 28th Mar 1935 | Box 82 \ 3 scan0160 | |
| Dynamometer test report for a low-geared Bentley rear axle with 10/43 gears. | 29th Mar 1935 | Box 82 \ 3 scan0161 | |
| Weight savings and modifications to the 5-B-IV petrol system. | 29th Mar 1935 | Box 82 \ 3 scan0162 | |
| Update on the readiness of a car for dispatch to France. | 1st Apr 1935 | Box 82 \ 3 scan0163 | |
| Final specification list for a 10,000 miles Bentley 5-B-IV. | 2nd Apr 1935 | Box 82 \ 3 scan0164 | |
| List of specifications and modifications for a vehicle's chassis and engine. | 2nd Apr 1935 | Box 82 \ 3 scan0165 | |
| List of engine component modifications and improvements. | 2nd Apr 1935 | Box 82 \ 3 scan0166 | |
| Weight saving efforts and modifications on the Bentley Chassis. | 2nd Apr 1935 | Box 82 \ 3 scan0167 | |
| Status report on the design and weight-saving progress of various vehicle components. | 2nd Apr 1935 | Box 82 \ 3 scan0168 | |
| Design modifications and weight considerations for the flywheel, clutch, propellor shaft, brakes, and jacking system. | 2nd Apr 1935 | Box 82 \ 3 scan0169 | |
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