| Description | Date | Identifier | |
| The overhaul and despatch of a B.16 Bentley 4 1/4 Litre unit to the Paris Depôt. | 13th Dec 1937 | Box 83 \ 3 scan0071 | |
| The transfer and overhaul of two Bentley 4 1/4 Litre units. | 16th Dec 1937 | Box 83 \ 3 scan0072 | |
| Requesting an update to the engine specification due to an engine swap between two cars. | 31th Jan 1938 | Box 83 \ 3 scan0073 | |
| Issues found during a weekend test drive of a vehicle. | 14th Feb 1938 | Box 83 \ 3 scan0074 | |
| Quarter scale layout of the standard Bentley for comparison with the Bentley III. | 21th Feb 1938 | Box 83 \ 3 scan0075 | |
| List of technical points and work items relating to Bentley vehicles. | 26th Apr 1938 | Box 83 \ 3 scan0076 | |
| Sales prospects of the 'M' Series Bentley and its suspension. | 25th Jun 1938 | Box 83 \ 3 scan0077 | |
| Secret memo concerning the unavailability of an Overdrive Bentley for press reports and a proposal to use a chassis for demonstration. | 6th Sep 1938 | Box 83 \ 3 scan0078 | |
| Request for comparative technical information on the 4 1/4 litre Bentley with the new overdrive gearbox. | 6th Sep 1938 | Box 83 \ 3 scan0079 | |
| Request for product information to be used by retailers, salesmen, and the Export Department for the announcement of an overdrive model. | 6th Sep 1938 | Box 83 \ 3 scan0080 | |
| Comparison of performance and improvements for the Overdrive Bentley 'M' Series versus the 'L' Series. | 7th Sep 1938 | Box 83 \ 3 scan0081 | |
| Specifications for the steering and gearbox systems. | 7th Sep 1938 | Box 83 \ 3 scan0082 | |
| Car engine particulars, including weight, testing conditions, and material composition. | 23th Sep 1938 | Box 83 \ 3 scan0083 | |
| Weight specifications for the PH.III 12 cylinder engine and its components. | 23th Sep 1938 | Box 83 \ 3 scan0084 | |
| Specification sheet detailing the weights of a Bentley 6 Cylinder 3½ x 4½ engine and its components. | 11th Oct 1938 | Box 83 \ 3 scan0085 | |
| Query challenging a stated direct drive ratio for the 'M' Series Bentley and requesting the overdrive efficiency loss percentage. | 11th Oct 1938 | Box 83 \ 3 scan0086 | |
| Effects of axle gear and tyre size changes on gearing and transmission efficiency for the 'M' Series Bentley. | 12th Oct 1938 | Box 83 \ 3 scan0087 | |
| Specification sheet detailing the components and mileage of a vehicle. | 14th Oct 1938 | Box 83 \ 3 scan0088 | |
| Ride complaints on the 'M' Series Bentley, comparing it to the 'L' Series and noting tyre pressures. | 1st Nov 1938 | Box 83 \ 3 scan0089 | |
| Customer criticisms of the ride quality of the overdrive Bentley, focusing on issues with larger tyres and tyre pressure variation. | 25th Nov 1938 | Box 83 \ 3 scan0090 | |
| Page two of a document requesting suggestions to resolve an issue with pressure and heating in a car. | 25th Nov 1938 | Box 83 \ 3 scan0091 | |
| Request for the weight of an 'M' Series Bentley piston and connecting rod for designing a new duralumin rod. | 1st Dec 1938 | Box 83 \ 3 scan0092 | |
| Test report on a Bentley engine modified with special parts to replicate the 1936 Tourist Trophy race engine. | 15th Mar 1939 | Box 83 \ 3 scan0093 | |
| Polar diagram showing the big end loadings for a 4 1/4 Litre Bentley engine. | 7th May 1937 | Box 83 \ 3 scan0094 | |
| Description of carburettor and intake alterations to manage depression and prevent detonation. | 15th Mar 1939 | Box 83 \ 3 scan0095 | |
| Performance graph for a 4 1/4 Litre Bentley engine showing B.M.E.P. and ignition timing against R.P.M. for the 'Paulin Car' unit. | 1st Mar 1939 | Box 83 \ 3 scan0096 | |
| Performance graph for a 4¼ Litre Bentley engine, unit B.19 (Series II) for the 'Paulin' car. | 1st Mar 1939 | Box 83 \ 3 scan0097 | |
| Requesting information on the Bentley type of Overdrive for a Motoring Correspondent. | 22th Aug 1939 | Box 83 \ 3 scan0098 | |
| Lack of literature for the Bentley overdrive gearbox in response to a query concerning Mr. Gibson Martin. | 23th Aug 1939 | Box 83 \ 3 scan0099 | |
| Speedometer reading and arrangements to leave a car at Clan Foundry. | 8th Oct 1940 | Box 83 \ 3 scan0100 | |
| Inquiry from Motor Sport magazine about the bearing materials used in chassis B-4-LS. | 20th Sep 1940 | Box 83 \ 3 scan0101 | |
| The high-mileage performance of Wellworthy's aluminium tin bearings and instructions for publishing a photograph. | 25th Sep 1940 | Box 83 \ 3 scan0102 | |
| Production versus experimental troubles for Bentley V models. | 1st Oct 1940 | Box 83 \ 3 scan0103 | |
| Brief memo confirming that updates will be provided on any parts removed from the B.V. chassis. | 4th Oct 1940 | Box 83 \ 3 scan0104 | |
| Delayed photograph of a secret 8-cylinder engine and the importance of not revealing it. | 7th Oct 1940 | Box 83 \ 3 scan0105 | |
| Outlining the standard procedure for measuring oil consumption in company cars. | 20th Oct 1940 | Box 83 \ 3 scan0106 | |
| Procedure for measuring oil drained from the crankcase. | 13th Nov 1940 | Box 83 \ 3 scan0107 | |
| The performance and issues of chassis B.22.AW after 20,000 miles. | 13th Nov 1940 | Box 83 \ 3 scan0108 | |
| Requesting to borrow a 3.5-litre Bentley for fuel economy tests. | 27th Nov 1940 | Box 83 \ 3 scan0109 | |
| 4 1/4-litre car, B-24-GA, previously owned by Raymond Mays, and its transfer to Derby. | 30th Nov 1940 | Box 83 \ 3 scan0110 | |
| The sale of Bentley V cars and an associated licence question. | 9th Dec 1940 | Box 83 \ 3 scan0111 | |
| To C. London confirming receipt of a car for testing. | 7th Dec 1940 | Box 83 \ 3 scan0112 | |
| Enquiry for a car and its availability for a potential purchaser. | 10th Dec 1940 | Box 83 \ 3 scan0113 | |
| The need for a car for three weeks and the difficulty in sourcing a 3.5 litre Saloon. | 16th Dec 1940 | Box 83 \ 3 scan0114 | |
| Price of car B-24-GA and a potential alternative Bentley. | 20th Dec 1940 | Box 83 \ 3 scan0115 | |
| The design and approval of an Induction Pipe for a Stromberg AA.25 Carburetter. | 21th Dec 1940 | Box 83 \ 3 scan0116 | |
| From Rm. to D.H. regarding the purchase of a Bentley, declining interest in car B-24-GA due to a better offer. | 27th Dec 1940 | Box 83 \ 3 scan0117 | |
| Loan of a car and an enquiry about the sale price of a Bentley B-24-GA and other 3.5-litre models. | 13th Dec 1940 | Box 83 \ 3 scan0118 | |
| The effect of a clutch disc on transmission rattle for chassis B.22.AW. | 30th Dec 1940 | Box 83 \ 3 scan0119 | |
| Schematic diagram of a rig for conducting torsional rate tests on clutch discs. | 2nd Dec 1940 | Box 83 \ 3 scan0120 | |
| Graph plotting torsional deflection against torque for a 10' clutch disc. | 7th Jan 1940 | Box 83 \ 3 scan0121 | |
| Graph showing the results of a torsional deflection test on a 10 inch clutch disc. | 11th Dec 1940 | Box 83 \ 3 scan0122 | |
| Graph showing the results of a torsional deflection test on a 10 inch clutch disc. | 28th Dec 1940 | Box 83 \ 3 scan0123 | |
| Graph showing the results of a torsional deflection test on a 10 inch clutch disc. | 7th Dec 1940 | Box 83 \ 3 scan0124 | |
| Graph showing the results of a torsional deflection test on a 10' clutch disc. | 24th Nov 1940 | Box 83 \ 3 scan0125 | |
| From a testers' conference detailing observations from a car's road test. | 3rd Jan 1941 | Box 83 \ 3 scan0126 | |
| Records of experimental features fitted to various cars, detailing parts, mileage, and fitment dates. | 7th Jan 1941 | Box 83 \ 3 scan0127 | |
| Cylinder block trials, exhaust system modifications, oiling fixes, and clutch types for Bentley and Wraith models. | 16th Jan 1939 | Box 83 \ 3 scan0128 | |
| Fitting of special Thermoid brake linings to a Wraith to cure squeaks. | 9th Aug 1939 | Box 83 \ 3 scan0129 | |
| Letter regarding an alteration to a car's clutch pedal setting for an experiment. | 7th Jan 1941 | Box 83 \ 3 scan0130 | |
| Cancelling the transport of trials car B-20-AW to Derby due to poor road conditions. | 7th Jan 1941 | Box 83 \ 3 scan0131 | |
| Private letter addressing an accusation of obstructionism concerning a performance test of a Bentley car for Mr. Pomeroy. | 8th Jan 1941 | Box 83 \ 3 scan0132 | |
| List of new parts fitted to restore a 10-B-V car after an accident. | 9th Jan 1941 | Box 83 \ 3 scan0133 | |
| Letter explaining the impracticality of providing an experimental car due to reliability and service capacity constraints. | 13th Jan 1941 | Box 83 \ 3 scan0134 | |
| Confirming cylinder bore readings will be taken for chassis numbers B.44-LS, B.86-LS, B.140-HK & B.70-GA. | 15th Jan 1941 | Box 83 \ 3 scan0135 | |
| Gearbox modifications and associated blueprints for the Silver Dawn 80 model. | 7th Sep 1939 | Box 83 \ 3 scan0136 | |
| Revised specifications for Engine Unit Bentley 60 No.3 on a Bentley V Chassis 9-B-V. | 23th Jan 1941 | Box 83 \ 3 scan0137 | |
| List of parts removed and fitted for the Camshaft, Oil Pump, and Wheelcase. | 24th Jan 1941 | Box 83 \ 3 scan0138 | |
| Specification of revised work and replacement parts fitted to a Bentley Chassis 10-B-V after an accident. | 24th Jan 1941 | Box 83 \ 3 scan0139 | |
| List of replacement parts fitted for the front axle, cross steering tube, and radiator. | 10th Jan 1941 | Box 83 \ 3 scan0140 | |
| Notification regarding required repairs to the big end bearings discovered during accident repair work on chassis No. 25-G-V1. | 10th Jan 1941 | Box 83 \ 3 scan0141 | |
| Letter to British Filters, Ltd. about an incorrect installation drawing for a filter on a Bentley Chassis. | 10th Feb 1941 | Box 83 \ 3 scan0142 | |
| Quotation for the cost of a rebore and other engine work for a Bentley chassis with an unknown number. | 31th Jan 1941 | Box 83 \ 3 scan0143 | |
| Holding material in reserve for Chassis No.B.214-GA. | 8th Feb 1941 | Box 83 \ 3 scan0144 | |
| Requesting a list of modifications made to Wilmot Breedon's Bentley V car. | 9th Feb 1941 | Box 83 \ 3 scan0145 | |
| To Mr. Breedon regarding a car and its licence. | 11th Feb 1941 | Box 83 \ 3 scan0146 | |
| Gearbox availability, specific car repairs, and arrangements for a trials car for H.R.H. The Duke of Kent. | 14th Feb 1941 | Box 83 \ 3 scan0147 | |
| Issues identified in a trials car, focusing on the sliding roof, seat backs, and draughts. | 11th Feb 1941 | Box 83 \ 3 scan0148 | |
| Availability and modifications of B-V chassis, gearboxes, and specific cars. | 11th Feb 1941 | Box 83 \ 3 scan0149 | |
| Page 2 of a communication regarding a car being ready for a customer. | 11th Feb 1941 | Box 83 \ 3 scan0150 | |
| Potential car for H.R.H. The Duke of Kent and associated issues. | 11th Feb 1941 | Box 83 \ 3 scan0151 | |
| Confirming the dispatch of parts for chassis B.214-GA, referencing a stock shortage of shackle pins. | 26th Feb 1941 | Box 83 \ 3 scan0152 | |
| Report of crankshaft wear measurements. | 19th Feb 1941 | Box 83 \ 3 scan0153 | |
| Technical memorandum discussing the refinement and improvement of high-power engine idling performance. | 1st Mar 1941 | Box 83 \ 3 scan0154 | |
| Requesting a summary of work on the 'idling question' to avoid repeating work. | 4th Mar 1941 | Box 83 \ 3 scan0155 | |
| Cost breakdown for modifications and parts for Chassis No. B.214-GA. | 12th Feb 1941 | Box 83 \ 3 scan0156 | |
| Specification for the aluminium B.60 8-cylinder engine, outlining design changes required. | 16th Mar 1941 | Box 83 \ 3 scan0157 | |
| List of desired features for inclusion in a new specification, continued from a previous page. | 18th Mar 1941 | Box 83 \ 3 scan0158 | |
| Confirming five action points from a discussion on engine components. | 18th Mar 1941 | Box 83 \ 3 scan0159 | |
| Various mechanical issues and observations for Chassis No. B.22. AW after 30,000 miles. | 4th Mar 1941 | Box 83 \ 3 scan0160 | |
| Production and fitting of new servo drive components for the Bentley V Chassis. | 21th Mar 1941 | Box 83 \ 3 scan0161 | |
| Front axle tramping on Chassis No. B.22 A.W. and seeking advice on repair. | 24th Mar 1941 | Box 83 \ 3 scan0162 | |
| The process for authorising the manufacture of chassis pieces. | 24th Mar 1941 | Box 83 \ 3 scan0163 | |
| Troubleshooting B.V. shock absorbers, attributing the issue to dirt under valves or worn front tyres. | 26th Mar 1941 | Box 83 \ 3 scan0164 | |
| Test drive report and feedback on Chassis B.214.GA, detailing performance and issues. | 27th Mar 1941 | Box 83 \ 3 scan0165 | |
| Modifications and instructions for customer B.V cars, covering brakes and front springs. | 28th Mar 1941 | Box 83 \ 3 scan0166 | |
| List of required modifications and settings for vehicle components including springs, clutch, and body. | 28th Mar 1941 | Box 83 \ 3 scan0167 | |
| Table detailing modifications made to specific customer B-V cars. | 28th Mar 1941 | Box 83 \ 3 scan0168 | |
| Incorrectly fitted change speed mechanism on a chassis. | 16th Mar 1941 | Box 83 \ 3 scan0169 | |
| Gear lever issue on a trials car, subsequent repairs, and related correspondence. | 19th Mar 1941 | Box 83 \ 3 scan0170 | |
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