| Description | Date | Identifier | |
| Letter from Accles & Pollock Ltd. regarding an order being held pending an exemption or license number. | 7th Mar 1940 | Box 144 \ 4 scan0041 | |
| Minutes of a conference discussing chassis design, cost reduction, wheelbases, and the Ripplet model. | 19th Mar 1940 | Box 144 \ 4 scan0042 | |
| Car body dimensions, construction materials, and the development of a left-hand drive model. | 19th Mar 1940 | Box 144 \ 4 scan0043 | |
| Gearbox and column control design, cost comparison, and development timelines. | 19th Mar 1940 | Box 144 \ 4 scan0044 | |
| The design, cost, and production specifications for the £800 car and the Rippletto model. | 19th Mar 1940 | Box 144 \ 4 scan0045 | |
| The desirable characteristics and engine options for a new small car. | 19th Mar 1940 | Box 144 \ 4 scan0046 | |
| Meeting discussing Mr. Giles' role, the completion of Bentley B.V. chassis using Corniche parts, and potential influential buyers for the B.V. cars. | 19th Mar 1940 | Box 144 \ 4 scan0047 | |
| Cost estimate for L.H. steering column gear change and L.H. side change-gearbox schemes. | 18th Mar 1940 | Box 144 \ 4 scan0048 | |
| Location and completion plan for B.V. and Corniche chassis. | 20th Mar 1940 | Box 144 \ 4 scan0049 | |
| Car production numbers, chassis, gear boxes, and bodies. | 20th Mar 1940 | Box 144 \ 4 scan0050 | |
| Notification for a Chassis Meeting with an agenda covering development and production progress. | 21th Mar 1940 | Box 144 \ 4 scan0051 | |
| Table showing the percentage of American production of 8-cylinder, 12-cylinder, and 16-cylinder cars from 1926 to 1939. | 27th Mar 1940 | Box 144 \ 4 scan0052 | |
| Request to purchase a secondhand blue-print machine for £28 10s to avoid delays with one-off blueprints. | 27th Mar 1940 | Box 144 \ 4 scan0053 | |
| Engine range for rationalised cars, considering post-war taxation and market strategy. | 28th Mar 1940 | Box 144 \ 4 scan0054 | |
| Recommendation to replace pre-war experimental aluminium engines with cost-effective High Power Cast Iron units. | 28th Mar 1940 | Box 144 \ 4 scan0055 | |
| Specification table for the Senior Rationalised Range of engines, grouped by cylinder count. | 28th Mar 1940 | Box 144 \ 4 scan0056 | |
| Proposing the use of drivers for scheduled service jobs to accustom owners to paying for maintenance. | 2nd Apr 1940 | Box 144 \ 4 scan0057 | |
| Role of Inspector Engineers and a proposal for post-war vehicle servicing. | 12th Apr 1940 | Box 144 \ 4 scan0058 | |
| George Eyston's stream-line run performance at Brooklands. | 8th Apr 1940 | Box 144 \ 4 scan0059 | |
| Completion of a Corniche Bentley body, personnel constraints, and war work priorities. | 12th Apr 1940 | Box 144 \ 4 scan0060 | |
| Confirming the employment details and salary of a new staff member. | 12th Apr 1940 | Box 144 \ 4 scan0061 | |
| Summary on Monocoque construction and the evaluation of Studebaker and Standard cars. | 12th Apr 1940 | Box 144 \ 4 scan0062 | |
| Monocoque versus sub-frame construction, focusing on insurance implications and repair costs. | 12th Apr 1940 | Box 144 \ 4 scan0063 | |
| Analysis of the advantages and disadvantages of using a detachable sub-frame on chassis-less cars. | 12th Apr 1940 | Box 144 \ 4 scan0064 | |
| Minutes of a chassis conference discussing vehicle performance, heaters, and other features. | 13th Apr 1940 | Box 144 \ 4 scan0065 | |
| The development of coupe bodies, desirable features, engine units, and chassis status. | 13th Apr 1940 | Box 144 \ 4 scan0066 | |
| Wartime production issues, including gearbox delays, chassis machining hours, gear grinding, costs, and programme scheduling. | 18th Apr 1940 | Box 144 \ 4 scan0067 | |
| Information on 'Bodies' being too advanced for the present Body Division. | 15th Apr 1940 | Box 144 \ 4 scan0068 | |
| Investigation into a hot rear seat on the 4.B.50 model, recommending a heat shield for the exhaust system. | 15th Apr 1940 | Box 144 \ 4 scan0069 | |
| Short memo discussing the tool kit for model 4.B.50 and the placement of hand tools on the car. | 18th Apr 1940 | Box 144 \ 4 scan0070 | |
| Criticisms and the proposed design for a car tool kit, including a comparison to a Rover kit. | 18th Apr 1940 | Box 144 \ 4 scan0071 | |
| Comparative list of tools and their weights for Rover and Rolls Royce vehicles. | 10th Apr 1940 | Box 144 \ 4 scan0072 | |
| Photograph of a toolkit in a fitted, hinged wooden case. | 19th Apr 1940 | Box 144 \ 4 scan0073 | |
| Comparison of power characteristics for single-cylinder engine units, focusing on the Aspin valve. | 19th Apr 1940 | Box 144 \ 4 scan0074 | |
| Comparison of engine designs and an analysis of detonation control, specifically focusing on the Aspin valve. | 19th Apr 1940 | Box 144 \ 4 scan0075 | |
| Graph comparing B.M.E.P. versus Piston Speed for various engines, with tables for valve timings, compression ratios, fuel, and engine specifications. | 19th Apr 1940 | Box 144 \ 4 scan0076 | |
| Logistics of completing Corniche car bodies in France during wartime hostilities. | 19th Apr 1940 | Box 144 \ 4 scan0077 | |
| Purchase of a small car for investigation as a potential model for the 'Myth' project. | 25th Apr 1940 | Box 144 \ 4 scan0078 | |
| Comparing the performance, consumption, and build of a Lagonda car against potential Bentley models. | 25th Apr 1940 | Box 144 \ 4 scan0079 | |
| Comparison of interior body dimensions between a Lagonda, Cresta, and Bentley V. | 26th Apr 1940 | Box 144 \ 4 scan0080 | |
| Comparative table of vehicle body dimensions for Lagonda, B.V., and Cresta models. | 26th Apr 1940 | Box 144 \ 4 scan0081 | |
| Overtime payments for gardeners at Duffield Bank House due to increased workload. | 27th Apr 1940 | Box 144 \ 4 scan0082 | |
| Eight faults found on production B.V. models and the proposed modifications before delivery to customers. | 27th Apr 1940 | Box 144 \ 4 scan0083 | |
| Proposal for research into the Aspin rotary valve and its suitability for two-stroke engines. | 1st May 1950 | Box 144 \ 4 scan0084 | |
| Technical memorandum detailing the non-debatable advantages of the Aspin valve engine over single sleeve engines. | 1st May 1940 | Box 144 \ 4 scan0085 | |
| Technical analysis of the claimed advantages of the Aspin engine, including compression ratios and spark plug life. | 1st May 1940 | Box 144 \ 4 scan0086 | |
| Preliminary investigation into the disadvantages of the Aspin engine, covering breathing, installation, weight and reliability. | 1st May 1940 | Box 144 \ 4 scan0087 | |
| M.E.P. curves for the Aspin valve engine compared to other naturally aspirated engines. | 2nd May 1940 | Box 144 \ 4 scan0088 | |
| Note about repeating a fuel test to investigate its characteristics after it failed to detonate. | 15th May 1940 | Box 144 \ 4 scan0089 | |
| Post-war popularity of coupe bodies and efforts to improve their rigidity. | 15th May 1940 | Box 144 \ 4 scan0090 | |
| Accompanying a photograph of a Lagonda from Devereux's for comparison with their own cars. | 13th May 1940 | Box 144 \ 4 scan0091 | |
| Photograph of a vintage saloon car parked on a rural road. | 13th May 1940 | Box 144 \ 4 scan0092 | |
| Black and white photograph showing the front of a saloon car, registration FYE 999, on a country road. | 13th May 1940 | Box 144 \ 4 scan0093 | |
| Photograph of a saloon car parked on a country road. | 17th May 1940 | Box 144 \ 4 scan0095 | |
| Arguing for the necessity of a canteen at the Clan Foundry for staff. | 17th May 1940 | Box 144 \ 4 scan0096 | |
| Showing the approximate comparative costs of canteens at Clan Foundry and Slack Lane. | 30th May 1940 | Box 144 \ 4 scan0097 | |
| Letter from Lord Beaverbrook's private secretary about handing over blueprints. | 30th May 1940 | Box 144 \ 4 scan0098 | |
| Confirming a telephone conversation and attaching a letter from the R.A.C. regarding a Corniche Body. | 11th Jun 1940 | Box 144 \ 4 scan0099 | |
| One-acre plot of land leased from Clan Foundry, now unusable due to being filled with air raid shelters. | 12th Jun 1940 | Box 144 \ 4 scan0100 | |
| Finding a suitable position for R.J.T. Hewitt, with a potential role in tank assembly. | 23th Jun 1940 | Box 144 \ 4 scan0101 | |
| Cover note from Rm. to Mr. Devereux regarding correspondence with John Howlett about criticisms of a bearing material. | 2nd Jul 1940 | Box 144 \ 4 scan0102 | |
| Letter addressing a business dispute and misunderstanding regarding a product called A.C.9. | 1st Jul 1940 | Box 144 \ 4 scan0103 | |
| Letter discussing the root cause of bearing failures, focusing on lubrication systems and installation over bearing material. | 1st Jul 1940 | Box 144 \ 4 scan0104 | |
| Letter to Leyland Motors regarding A.C.9. bearing material trouble due to oil shortage. | 10th Jun 1940 | Box 144 \ 4 scan0105 | |
| Letter from Henry Spurrier to Mr. Robotham clarifying a misunderstanding regarding conversations about the material A.C.9. | 14th Jun 1940 | Box 144 \ 4 scan0106 | |
| Letter from V.W. Pilkington to Robotham discussing a difficult situation regarding A.C.9. bearings. | 25th Jun 1940 | Box 144 \ 4 scan0107 | |
| Recommendation to take the B.V. model off the road due to poor performance compared to a reference model. | 14th Jul 1940 | Box 144 \ 4 scan0108 | |
| Clarifying a chassis reference, distinguishing it from a trials car, and returning reports. | 17th Jul 1940 | Box 144 \ 4 scan0109 | |
| Big end failures in the Merlin engine, detailing failure rates and proposed modifications to the lubrication system. | 23th Jul 1940 | Box 144 \ 4 scan0110 | |
| Developments in lubrication systems, engine performance, and a proposed modification for the Merlin engine. | 31th Jan 1938 | Box 144 \ 4 scan0111 | |
| Cars sent to Canada for storage and notes on their experimental condition. | 29th Jul 1940 | Box 144 \ 4 scan0112 | |
| Request to sanction the insurance for an employee's private car to be used on company business. | 6th Aug 1940 | Box 144 \ 4 scan0113 | |
| Request for an employee to use their own car for business relating to gun manufacturing supervision. | 13th Aug 1940 | Box 144 \ 4 scan0114 | |
| Notice to all Officials and Superintendents regarding a weekend works closure. | 21th Aug 1940 | Box 144 \ 4 scan0115 | |
| Confirming travel arrangements involving plane and train services between Glasgow and Hillingdon. | 25th Aug 1940 | Box 144 \ 4 scan0116 | |
| Circular instructing employees on the correct procedure for receiving and ordering goods to avoid payment issues. | 2nd Sep 1940 | Box 144 \ 4 scan0117 | |
| Internal memorandum instructing managers that employees cannot hold full-time positions in civil defence organisations. | 4th Sep 1940 | Box 144 \ 4 scan0118 | |
| Confirming the works will be closed from Saturday mid-day until the Sunday night shift commences. | 6th Sep 1940 | Box 144 \ 4 scan0119 | |
| Confirming the cancellation of a Sunday night-shift for the weekend. | 7th Sep 1940 | Box 144 \ 4 scan0120 | |
| Establishing the Crewe Material Office and its responsibilities for raw material supply. | 9th Sep 1940 | Box 144 \ 4 scan0121 | |
| Outlining a trial for alternate weekend rest periods and detailing revised working hours. | 9th Sep 1940 | Box 144 \ 4 scan0122 | |
| To Superintendents and Foremen regarding the enforcement of factory starting and stopping times. | 9th Sep 1940 | Box 144 \ 4 scan0123 | |
| 53,000-mile endurance test of car model 30.G.VII, detailing performance and component failures. | 11th Sep 1940 | Box 144 \ 4 scan0124 | |
| Mechanical failures and maintenance on a vehicle, including gearbox issues and routine service requirements. | 11th Sep 1940 | Box 144 \ 4 scan0125 | |
| Cost analysis and reliability report for a car that has run over 50,000 miles. | 11th Sep 1940 | Box 144 \ 4 scan0126 | |
| Outlining payment and clocking procedures for factory employees during air raid warnings. | 17th Sep 1940 | Box 144 \ 4 scan0127 | |
| Confirming the disposal of a Buick and acquisition of two small cars to gather design information for the 'Myth' project. | 26th Sep 1940 | Box 144 \ 4 scan0128 | |
| Recommending augmenting staff for the Transport Section at Derby due to maintenance issues with experimental cars. | 27th Sep 1940 | Box 144 \ 4 scan0129 | |
| Recommending staff augmentation for the shorthanded Transport Section in Derby to ensure proper vehicle maintenance. | 27th Sep 1940 | Box 144 \ 4 scan0130 | |
| Recommendation to increase staff in the Transport Section at Derby due to inadequate vehicle maintenance. | 27th Sep 1940 | Box 144 \ 4 scan0131 | |
| Departmental rotation and transfer of an engineering apprentice, P.L. Watson. | 4th Oct 1940 | Box 144 \ 4 scan0132 | |
| Publicity concerning W.O. Bentley, Lagondas, and pre-Rolls Royce Bentleys. | 9th Oct 1940 | Box 144 \ 4 scan0133 | |
| Notice to officials and superintendents regarding the fortnightly weekend closure of the Derby works. | 14th Oct 1940 | Box 144 \ 4 scan0134 | |
| From Rm to Hs regarding particulars of tool drawings sent to America. | 19th Oct 1940 | Box 144 \ 4 scan0135 | |
| Typed memo regarding the arrangement of a visit to the Leyland Directors. | 21th Oct 1940 | Box 144 \ 4 scan0136 | |
| Contractual policy and development strategy for the 40mm cannon gun. | 23th Oct 1940 | Box 144 \ 4 scan0137 | |
| Proposing ways to increase publicity for the Rolls-Bentley's Tourist Trophy achievements to counteract propaganda from 3-litre Bentley supporters. | 27th Oct 1940 | Box 144 \ 4 scan0138 | |
| Letter to 'The Autocar' regarding the performance of a 3 1/2-litre Rolls-Bentley in the Tourist Trophy races. | 27th Oct 1940 | Box 144 \ 4 scan0139 | |
| Letter to 'The Autocar' comparing the performance of 4.5-litre and 8-litre Bentley models in races. | 27th Oct 1940 | Box 144 \ 4 scan0140 | |
| Two letters to 'The Autocar' discussing the racing performance of Bentley cars. | 27th Oct 1940 | Box 144 \ 4 scan0141 | |
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