| Description | Date | Identifier | |
| List of engineering decisions and modifications for various engine and chassis components. | 28th Sep 1933 | Box 3 \ 6 06-page047 | |
| Series of recommendations regarding modifications to exhaust fittings, radiator, bonnet, flywheel and other components. | 28th Sep 1933 | Box 3 \ 6 06-page048 | |
| List of recommendations and decisions for various vehicle components based on 10,000 mile car tests. | 28th Sep 1933 | Box 3 \ 6 06-page049 | |
| Recommendations for modifications to the clutch pedal shaft, propeller shaft universal joints, and a water pipe to the carburetter jackets. | 28th Sep 1933 | Box 3 \ 6 06-page050 | |
| Results of modifications and retests on 14 Bentley cars for demonstration and show purposes. | 29th Sep 1933 | Box 3 \ 6 06-page051 | |
| List of vehicle issues and suggested improvements for various components. | 29th Sep 1933 | Box 3 \ 6 06-page052 | |
| List of vehicle faults and observations, including issues with the engine, bodywork, and tyres. | 29th Sep 1933 | Box 3 \ 6 06-page053 | |
| Letter from Ricardo & Co. confirming a meeting with Mr. Robotham and Mr. Hives. | 29th Sep 1933 | Box 3 \ 6 06-page054 | |
| Letter to O. Thornycroft of Ricardo & Co. arranging a visit from the chief designer. | 2nd Oct 1933 | Box 3 \ 6 06-page055 | |
| Decisions on components for the 3½ Litre Bentley Chassis. | 4th Oct 1933 | Box 3 \ 6 06-page056 | |
| List of decisions and actions on various vehicle components, continued from a previous page. | 11th Oct 1933 | Box 3 \ 6 06-page057 | |
| Alternative designs for the Bentley mascot. | 11th Oct 1933 | Box 3 \ 6 06-page058 | |
| The design and chromium plating of a Bentley mascot intended to represent the 'All-seeing Eye'. | 10th Oct 1933 | Box 3 \ 6 06-page059 | |
| Short memo regarding an article by Malcolm Campbell on the Bentley in the 'Field' magazine. | 13th Oct 1933 | Box 3 \ 6 06-page060 | |
| Design and reception of the new Bentley Mascot, including the artist's description. | 16th Oct 1933 | Box 3 \ 6 06-page061 | |
| Request for Bentley chassis drawings or photographs for an announcement in 'La Vie Automobile' magazine. | 24th Oct 1933 | Box 3 \ 6 06-page062 | |
| Decisions on parts for the Bentley chassis. | 27th Oct 1933 | Box 3 \ 6 06-page063 | |
| Production instructions and release status for various car components. | 27th Oct 1933 | Box 3 \ 6 06-page064 | |
| Updates and decisions on various vehicle components including pumps, lamps, clutches, and carburetters. | 27th Oct 1933 | Box 3 \ 6 06-page065 | |
| Letter responding to a request for photographs and drawings of a Bentley chassis. | 31th Oct 1933 | Box 3 \ 6 06-page066 | |
| Accompanying a Bentley chassis print. | 1st Nov 1933 | Box 3 \ 6 06-page067 | |
| Recommendations for pattern modifications and production decisions on the 3.5 litre Bentley Chassis. | 1st Nov 1933 | Box 3 \ 6 06-page068 | |
| List of recommendations for the production and sourcing of various vehicle components. | 1st Nov 1933 | Box 3 \ 6 06-page069 | |
| Recommendations and production decisions for various car components. | 1st Nov 1933 | Box 3 \ 6 06-page070 | |
| Recommendation to incorporate a bronze bush in the distributor tower bearing on Bentley engines. | 12th Nov 1933 | Box 3 \ 6 06-page071 | |
| Production quantities and part standardisation for the 3½ Litre Bentley Chassis. | 12th Nov 1933 | Box 3 \ 6 06-page072 | |
| Standardization of sparking plugs for the Bentley Car, comparing proposals from K.L.G and Lodge. | 1st Nov 1933 | Box 3 \ 6 06-page073 | |
| Testing and standardization of a 3.5 Litre Bentley following a piston failure. | 3rd Dec 1933 | Box 3 \ 6 06-page074 | |
| Of thanks for confidential memoranda concerning Bentley. | 3rd Nov 1933 | Box 3 \ 6 06-page075 | |
| Test report on the performance of a 100 M.P.H. streamlined Bentley car. | 6th Nov 1933 | Box 3 \ 6 06-page076 | |
| Performance graph showing Brake Horsepower (BHP) vs Revolutions Per Minute (RPM) for a Bentley 3.8 unit. | 16th Nov 1933 | Box 3 \ 6 06-page077 | |
| Cover note forwarding correspondence about Lord Howe's Bentley Touring Car B-1-AE, asking for comments. | 11th Nov 1933 | Box 3 \ 6 06-page078 | |
| Cover letter discussing feedback received from Lord Howe concerning a two-day trip in a Bentley Open Touring car. | 9th Nov 1933 | Box 3 \ 6 06-page079 | |
| Letter of thanks and feedback following a 312-mile test drive of a new Bentley. | 6th Nov 1935 | Box 3 \ 6 06-page080 | |
| Page 2 of a road test report detailing a car's performance, handling, and suspension characteristics at high speed. | 6th Nov 1935 | Box 3 \ 6 06-page081 | |
| Page from a vehicle test report comparing steering, gearbox, and braking performance against Mercedes and Alfa models. | 6th Nov 1935 | Box 3 \ 6 06-page082 | |
| Providing feedback on a vehicle's features, including the dash layout, steering wheel, controls, and spark plugs. | 6th Nov 1935 | Box 3 \ 6 06-page083 | |
| Engine performance, ignition, and a comparison of India vs. Dunlop tyres on an S.S. Mercedes. | 6th Nov 1935 | Box 3 \ 6 06-page084 | |
| Page 6 of a letter giving performance feedback, a race suggestion, and criticism of a body component. | 11th Nov 1933 | Box 3 \ 6 06-page085 | |
| List of proposed modifications for a Bentley 10,000 miles test in France. | 11th Nov 1933 | Box 3 \ 6 06-page086 | |
| Responding to Lord Howe's report on a Bentley's performance, discussing springing, steering, and braking. | 13th Nov 1933 | Box 3 \ 6 06-page087 | |
| Feedback on a Bentley's steering wheel, controls, tyres, weight, and performance potential. | 13th Nov 1933 | Box 3 \ 6 06-page088 | |
| List of criticisms and suggestions regarding various Bentley car details. | 15th Nov 1933 | Box 3 \ 6 06-page089 | |
| Various points of criticism and suggestions for car improvements, including the jack, cut-out, suspension, and tyres. | 15th Nov 1933 | Box 3 \ 6 06-page090 | |
| 10,000-mile test on a 3 1/2 Litre Bentley to prove a strengthened piston and new petrol pump. | 20th Nov 1933 | Box 3 \ 6 06-page091 | |
| Letter of appreciation and feedback from A. Pérouse following a test drive of a new Bentley Rolls Royce in Paris. | 2nd Dec 1933 | Box 3 \ 6 06-page092 | |
| Selection of spark plugs for Bentley cars, comparing Lodge and K.L.G. brands. | 4th Dec 1933 | Box 3 \ 6 06-page093 | |
| Standardisation of K.L.G. sparking plugs for the Bentley Car. | 4th Dec 1933 | Box 3 \ 6 06-page094 | |
| Standardization of sparking plugs for Bentley cars. | 5th Dec 1933 | Box 3 \ 6 06-page095 | |
| Bentley production, specifically exhaust valve failures due to leaded fuels and the subsequent modifications. | 6th Dec 1933 | Box 3 \ 6 06-page096 | |
| Failures and modifications to a silencer's sliding joint and intermediate expansion box. | 6th Dec 1933 | Box 3 \ 6 06-page097 | |
| Unresolved issues with the 3.5 Litre Bentley Production Chassis, including drive groan and oil leaks. | 7th Dec 1933 | Box 3 \ 6 06-page098 | |
| Report page detailing persistent issues with gearbox rattle, horn button functionality, and gear lever vibration. | 7th Dec 1933 | Box 3 \ 6 06-page099 | |
| Testing a higher compression larger inlet valve cylinder head for Bentley performance. | 13th Dec 1933 | Box 3 \ 6 06-page100 | |
| Power output graph for a 3 1/2 Litre Bentley engine. | 12th Feb 1933 | Box 3 \ 6 06-page101 | |
| Report on a higher compression cylinder head, pointing out a typo and suggesting a conference for the next Bentley batch. | 14th Dec 1933 | Box 3 \ 6 06-page102 | |
| Correcting a typing error in mileage figures concerning Bentley engine performance. | 18th Dec 1933 | Box 3 \ 6 06-page103 | |
| Recommending an order for 50 sets of stellited K.L.G. 765A spark plugs for a Bentley car. | 22th Dec 1933 | Box 3 \ 6 06-page104 | |
| Test drive report and feedback on a demonstration Bentley car, No. B-154e, over a 450-mile journey. | 28th Dec 1933 | Box 3 \ 6 06-page105 | |
| Cover note for a chart showing the relative B.HP developed at the road wheels on dynamometer for models 2-B-IV and B-23-AE. | 1st Jan 1934 | Box 3 \ 6 06-page106 | |
| The allocation and potential modifications for the first 15 Bentley cars. | 10th Jan 1934 | Box 3 \ 6 06-page107 | |
| 22-gallon petrol tank and rear axle for Bentley chassis No. B-35-AE. | 12th Jan 1934 | Box 3 \ 6 06-page108 | |
| Confirmation memo regarding the repair of a Bentley B-4-A unit and its specific components. | 2nd Jan 1934 | Box 3 \ 6 06-page109 | |
| Fitment of a larger petrol tank to Bentley Chassis No. B-35-AY. | 13th Jan 1934 | Box 3 \ 6 06-page110 | |
| List of suggested modifications for the first 15 Bentley cars based on servicing experience. | 12th Jan 1934 | Box 3 \ 6 06-page111 | |
| Modifications to Bentley cars to align them with production models, including an urgent request for a customer vehicle. | 18th Jan 1934 | Box 3 \ 6 06-page112 | |
| Offer and acceptance of a chassis delivery to Mr. C.W. Nichols of Smith & Sons. | 20th Jan 1934 | Box 3 \ 6 06-page113 | |
| Response deferring a decision to 'Wor.' due to the implications on material supplies from production. | 12th Jan 1934 | Box 3 \ 6 06-page114 | |
| Investigation into the cause of a 'boom' noise on a Bentley 3-B-IV at 3250 engine revs. | 23th Jan 1934 | Box 3 \ 6 06-page115 | |
| Fitting a higher geared axle and modified instruments to Bentley Chassis B-171-AE. | 23th Jan 1934 | Box 3 \ 6 06-page116 | |
| Covering note forwarding a copy of a memo for review. | 26th Jan 1934 | Box 3 \ 6 06-page117 | |
| Test drive report on the first production Bentley B.65, noting an issue with wing rigidity. | 25th Jan 1934 | Box 3 \ 6 06-page118 | |
| Criticism of the difficulty starting a Bentley from cold, with a comparison to a Hillman Minx. | 26th Jan 1934 | Box 3 \ 6 06-page119 | |
| Issues with Bentley starter motors and the development of an improved version. | 27th Jan 1934 | Box 3 \ 6 06-page120 | |
| The investigation and reduction of engine 'boom' on a Bentley 3-B-IV. | 23th Jan 1934 | Box 3 \ 6 06-page121 | |
| Design considerations for connecting rods and pistons for the 3 1/2 litre Bentley engine. | 26th Jan 1934 | Box 3 \ 6 06-page122 | |
| Confirming a drawing will be issued for a piston pin size modification. | 26th Jan 1934 | Box 3 \ 6 06-page123 | |
| Development of the 3½ litre Bentley power unit, proposing an experiment related to the crankshaft bearings. | 29th Jan 1934 | Box 3 \ 6 06-page124 | |
| The testing of production Bentley cars, noting issues with front wing flapping and bonnet movement. | 5th Feb 1934 | Box 3 \ 6 06-page125 | |
| Vehicle performance issues including clutch shudder, rattles, boom period, and floorboard vibrations. | 5th Feb 1934 | Box 3 \ 6 06-page126 | |
| List of reported vehicle faults and suggested actions, continued from a previous page. | 2nd Feb 1934 | Box 3 \ 6 06-page127 | |
| Report from the U.S.A. on a Bentley valve spring failure, S.A.E. papers on 'Knee Action', and Chrysler suspension. | 8th Feb 1934 | Box 3 \ 6 06-page128 | |
| Report from the U.S.A. on running issues found in a Bentley, covering ground clearance, valve springs, and axle problems. | 22th Jan 1934 | Box 3 \ 6 06-page129 | |
| Brake and suspension performance, noting issues with body rattles and draughts, specifically for American conditions. | 5th Feb 1934 | Box 3 \ 6 06-page130 | |
| Requesting an update on the development and testing timeline for the 3 1/2-Litre Bentley power unit. | 25th Feb 1934 | Box 3 \ 6 06-page131 | |
| Questioning a change to the radiator mounting on production Bentley cars, deeming it the opposite of an improvement. | 6th Feb 1934 | Box 3 \ 6 06-page132 | |
| Roughness effect of running a 3 1/2 litre Bentley engine with four bearings and requesting a report on 8-in-line engines. | 6th Feb 1934 | Box 3 \ 6 06-page133 | |
| Customer complaints regarding Bentley Chassis B.65-AE, including bonnet knock, vibration, and damper issues. | 7th Feb 1934 | Box 3 \ 6 06-page134 | |
| Findings on various vehicle systems including exhaust, suspension, clutch, and carburettors. | 1st Feb 1934 | Box 3 \ 6 06-page135 | |
| The training and placement of Mr. Dershow and its impact on Bentley car demonstrations. | 1st Feb 1934 | Box 3 \ 6 06-page136 | |
| Supply of spare parts for Bentley cars for private owners. | 7th Feb 1934 | Box 3 \ 6 06-page137 | |
| Use of a driver for a 10,000-mile Bentley endurance test and a potential replacement. | 8th Feb 1934 | Box 3 \ 6 06-page138 | |
| Follow-up telephone conversation regarding a dangerous braking complaint for a Bentley, chassis B-39-AE. | 13th Feb 1934 | Box 3 \ 6 06-page139 | |
| Replacement of clutch components on the Open Trials Car B.1.AE. | 14th Aug 1934 | Box 3 \ 6 06-page140 | |
| Replacing the clutch Friction Plate and Ferodos on an Open Trials Car B.1.AE. | 14th Feb 1934 | Box 3 \ 6 06-page141 | |
| Dispatch of chassis 2-B-IV to Messrs. Park Wards for the fitting of lamps and horns. | 17th Feb 1934 | Box 3 \ 6 06-page142 | |
| Wing and radiator movement on a Bentley, detailing tests to reduce it. | 27th Feb 1934 | Box 3 \ 6 06-page143 | |
| List of modifications and components to be fitted to a car. | 2nd Mar 1934 | Box 3 \ 6 06-page144 | |
| Requesting a Bentley Saloon, chassis B.47.AE, be made ready for collection. | 26th Feb 1934 | Box 3 \ 6 06-page145 | |
| From Sg. to Hs. regarding a Bentley, requesting an answer to points raised in an earlier communication. | 5th Mar 1934 | Box 3 \ 6 06-page146 | |
| | | | |
