| Description | Date | Identifier | |
| Despatch of new Lockheed flexes for hydraulic jacks. | 5th Jun 1935 | Box 82 \ 3 scan0370 | |
| Chassis and body defects, arranging for Park Ward to investigate. | 7th Jun 1935 | Box 82 \ 3 scan0371 | |
| Results and findings of coachwork tests conducted in France on various vehicles. | 7th Jun 1935 | Box 82 \ 3 scan0372 | |
| 15,000-mile Bentley test in France, detailing issues with a standardised saloon coachwork. | 7th Jun 1935 | Box 82 \ 3 scan0373 | |
| Vehicle trial results, focusing on bodywork fatigue, chassis performance, and coachbuilder comparisons. | 7th Jun 1935 | Box 82 \ 3 scan0374 | |
| The failures of a Bentley Saloon and a 5-B-IV chassis, focusing on crankshaft bearing issues due to lubrication problems. | 7th Jun 1935 | Box 82 \ 3 scan0375 | |
| Engine roughness solutions and testing of stellited exhaust valves. | 7th Jun 1935 | Box 82 \ 3 scan0376 | |
| Letter from coachbuilders Park Ward & Co. Ltd regarding repairs to Experimental Car 5-B-IV, which was received without its engine. | 1st Jul 1935 | Box 82 \ 3 scan0377 | |
| Fractured jack brackets and Spectre chassis lubrication. | 1st Jul 1935 | Box 82 \ 3 scan0378 | |
| Letter from Park Ward about the delivery of Experimental Car, 5-B-IV. | 6th Jul 1935 | Box 82 \ 3 scan0379 | |
| Letter from coachbuilder Park Ward & Co. Ltd. to Bentley Motors regarding re-panelling the body of an experimental car. | 5th Jul 1935 | Box 82 \ 3 scan0380 | |
| The Spectre Radiator matrix and progress on the Large Bore 20/25 Bentley development. | 24th Jul 1935 | Box 82 \ 3 scan0381 | |
| Inquiry to Park Ward & Co. Ltd. regarding the expected return of a 5-B-IV Bentley car. | 7th Aug 1935 | Box 82 \ 3 scan0382 | |
| Letter to Messrs. Park, Ward & Co. Ltd. regarding the delivery of 5-B-IV. | 26th Aug 1935 | Box 82 \ 3 scan0383 | |
| Request for permission for a Leyland Lorry to collect '5-B-IV' from Messrs. Park Wards. | 28th Aug 1935 | Box 82 \ 3 scan0384 | |
| Internal request to remove the gears from a rear axle (5-B-IV) for testing purposes. | 24th Sep 1935 | Box 82 \ 3 scan0385 | |
| Acknowledgement of receipt for an old steering column from chassis 3-B-IV, to be fitted to scrap chassis 5-B-IV. | 5th Oct 1935 | Box 82 \ 3 scan0386 | |
| Park Ward's invoice for the re-construction of a Saloon body and the required internal accounting adjustment. | 1st Nov 1935 | Box 82 \ 3 scan0387 | |
| Cost of repairs for car 5-B-IV after a 10,000 miles test and cost sharing with Park Wards. | 8th Nov 1935 | Box 82 \ 3 scan0388 | |
| Proposed modifications to stiffen a Big Bore Bentley chassis. | 9th Nov 1935 | Box 82 \ 3 scan0389 | |
| To MHC listing a backlog of cars and jobs waiting for the shop. | 14th Nov 1935 | Box 82 \ 3 scan0390 | |
| Proposing modifications for a flexible engine mounting and cantilever pedal scheme for model 5-B-IV. | 22th Apr 1936 | Box 82 \ 3 scan0391 | |
| Remaining drawing and design work required to complete a car, following successful frame tests. | 5th May 1936 | Box 82 \ 3 scan0392 | |
| List of specifications for the chassis, gearbox, and engine components of a vehicle. | 5th May 1936 | Box 82 \ 3 scan0393 | |
| Listing six required improvements and checks relating to vehicle controls, steering and chassis. | 29th Sep 1936 | Box 82 \ 3 scan0394 | |
| Brief specification sheet detailing features of major vehicle components. | 24th Sep 1936 | Box 82 \ 3 scan0395 | |
| List of required modifications and fixes for a Bentley car, model 5-B-IV. | 14th Oct 1936 | Box 82 \ 3 scan0396 | |
| Outlining the experimental features and known issues of a test car being sent to London. | 15th Dec 1936 | Box 82 \ 3 scan0397 | |
| From Sg to Rm discussing impressions of a car and arranging for its return. | 6th Jan 1937 | Box 82 \ 3 scan0398 | |
| Request to fit a large capacity helical gear oil pump for oil pressure tests after braking. | 18th Jan 1937 | Box 82 \ 3 scan0399 | |
| Request to manufacture one lightened Bentley petrol tank for 5.B.1V with a modified side filler, including component specifications. | 22th Jan 1937 | Box 82 \ 3 scan0400 | |
| Invoice from Park. Ward & Co. Ltd. for repairs to a 3 ½ Litre Bentley chassis. | 27th Jan 1937 | Box 82 \ 3 scan0401 | |
| Letter from coachbuilders Park Ward & Co. regarding an invoice and lack of official order for chassis No. 5.B.IV. | 25th Jan 1937 | Box 82 \ 3 scan0402 | |
| Dynamometer running instructions for testing a 5.B.IV gearbox and axle. | 8th Jun 1938 | Box 82 \ 3 scan0403 | |
| Request to send an official order to Messrs Park Ward for the sum of 15 shillings for repairs. | 1st Feb 1937 | Box 82 \ 3 scan0404 | |
| Request to fabricate a bent exhaust pipe to direct exhaust heat onto the rear universal joint of the 5.B.IV Dyno Chassis for an experiment. | 15th Nov 1938 | Box 82 \ 3 scan0405 | |
| Failure of a Wraith first motion shaft and the fitting of a new gearbox and axle. | 18th Nov 1938 | Box 82 \ 3 scan0406 | |
| Listing five required jobs and requested checks for 'Lp's Car'. | 6th Nov 1934 | Box 82 \ 4 scan0001 | |
| The chassis and body weights for various 3 1/2 Litre Bentley models, including a comparison with a Pontiac body. | 8th Nov 1934 | Box 82 \ 4 scan0002 | |
| Lack of clarity regarding control of the Bentley Service Station and how to handle service complaints. | 8th Nov 1934 | Box 82 \ 4 scan0003 | |
| Effectiveness of the Bentley quarterly complaints list and suggesting improvements. | 8th Nov 1934 | Box 82 \ 4 scan0004 | |
| 33 complaints of irregular slow running in Bentley cars and the necessary servicing standards. | 8th Nov 1934 | Box 82 \ 4 scan0005 | |
| Request to prepare another set of Hartford shock absorbers for car LEC.3955. | 9th Nov 1934 | Box 82 \ 4 scan0006 | |
| Bentley ground clearance issues caused by the exhaust system. | 12th Nov 1934 | Box 82 \ 4 scan0007 | |
| Request to manufacture three sets of lightened front cross member parts, with one set urgently required for a customer's car. | 12th Nov 1934 | Box 82 \ 4 scan0008 | |
| Confirming the booking of the Lucas Cold Room for a Bentley cold starting test. | 12th Nov 1934 | Box 82 \ 4 scan0009 | |
| Structuring the service relationship for Bentley cars between the Kingsbury and Derby locations. | 14th Nov 1934 | Box 82 \ 4 scan0010 | |
| Arranging a visit for the chief of the Repair Department to improve liaison between Derby and Kingsbury, particularly regarding Bentley cars. | 14th Nov 1934 | Box 82 \ 4 scan0011 | |
| Short memo confirming a visit to improve liaison between the Depot and the Works. | 15th Nov 1934 | Box 82 \ 4 scan0012 | |
| Modifications for the Bentley 1st and 2nd Moves, including the radiator assembly, thermostat casing, and dashboard. | 15th Nov 1934 | Box 82 \ 4 scan0013 | |
| Short typed memo confirming a meeting in Derby. | 16th Nov 1934 | Box 82 \ 4 scan0014 | |
| Request for a car to be sent to the station for a train arrival. | 19th Nov 1934 | Box 82 \ 4 scan0015 | |
| Short typed memo arranging a meeting in Derby and a visit to Kingsbury. | 17th Nov 1934 | Box 82 \ 4 scan0016 | |
| Failure of bolts on Bentley front wing stays. | 19th Nov 1934 | Box 82 \ 4 scan0017 | |
| List of outstanding jobs for Spectre, Bentley, and 20/25 HP models. | 20th Nov 1934 | Box 82 \ 4 scan0018 | |
| Cold weather starting issues for Bentley and 20/25 cars, recommending thinner winter oils and a geared starter motor. | 20th Nov 1934 | Box 82 \ 4 scan0019 | |
| Headlamp and wing movement on the Bentley, and the potential standardization of a bumper bar. | 20th Nov 1934 | Box 82 \ 4 scan0020 | |
| Tests on Bentley headlamp and wing movement, and methods for reduction. | 20th Nov 1934 | Box 82 \ 4 scan0021 | |
| Graph plotting headlamp movement against different vehicle chassis and wing configurations. | 20th Nov 1934 | Box 82 \ 4 scan0022 | |
| Diagrammatic sketch of a measuring apparatus for vehicle frame and headlamps. | 23th Nov 1934 | Box 82 \ 4 scan0023 | |
| The sourcing and ordering process for standard bumper bars for Bentley cars from Messrs. Wilmot-Breeden. | 23th Nov 1934 | Box 82 \ 4 scan0024 | |
| Bonnet stripping and wing attachment for the Bentley 1st and 2nd Moves, referencing schedule N. Sch.4271. | 23th Nov 1934 | Box 82 \ 4 scan0025 | |
| Brief typed memo from Bn. to Hs. confirming a trip to Derby. | 26th Nov 1934 | Box 82 \ 4 scan0026 | |
| Visit to the Bentley Service Depot at Kingsbury, discussing issues with petrol pipes, clutches, and brake thumps. | 26th Nov 1934 | Box 82 \ 4 scan0027 | |
| Issues with fierce brakes, brake squeaks, and front axle control on Bentley vehicles. | 26th Nov 1934 | Box 82 \ 4 scan0028 | |
| Contact piece adjustment difficulties and fractures of petrol pipe union nuts. | 26th Nov 1934 | Box 82 \ 4 scan0029 | |
| The Bentley Electrical System, referencing reports on run-down batteries and arranging a visit to investigate 'blacking out' trouble. | 26th Nov 1934 | Box 82 \ 4 scan0030 | |
| Experimental department report regarding the Bentley dynamo to battery charge relation following customer complaints. | 26th Nov 1934 | Box 82 \ 4 scan0031 | |
| Examination of the Bentley dynamo to battery charge relation following customer complaints of discharged batteries. | 26th Nov 1934 | Box 82 \ 4 scan0032 | |
| Conclusions and test procedures for a dynamo-battery circuit. | 26th Nov 1934 | Box 82 \ 4 scan0033 | |
| Dynamo and battery system performance with recommendations for improvements. | 26th Nov 1934 | Box 82 \ 4 scan0034 | |
| Necessary improvements to the dynamo and battery regulator, including requirements for vehicles fitted with a radio set. | 26th Nov 1934 | Box 82 \ 4 scan0035 | |
| Internal memorandum concerning modifications and testing of a bumper bar fitted to Mr. Fairey's car. | 26th Nov 1934 | Box 82 \ 4 scan0036 | |
| Instructions and notes regarding the fitting of a Wilmot Breeden stabilising bumper to existing Bentley cars. | 27th Nov 1933 | Box 82 \ 4 scan0037 | |
| Blueprint of a stabilising bumper for a Bentley. | 28th Nov 1934 | Box 82 \ 4 scan0038 | |
| Technical drawing of two different bush designs and an associated washer. | 27th Nov 1934 | Box 82 \ 4 scan0039 | |
| Suggested method for mounting a stabilising bumper on existing Bentley cars. | 27th Nov 1934 | Box 82 \ 4 scan0040 | |
| Bentley test drive, noting improvements to reduce wing and headlamp movement and performance issues with a 25 HP model. | 30th Nov 1934 | Box 82 \ 4 scan0041 | |
| Confirming a request to modify a car's axle control for testing the effects of high speed brake tramp. | 30th Nov 1934 | Box 82 \ 4 scan0042 | |
| Headlamp and wing movement on the Bentley, concluding that a special bumper design is not required. | 30th Nov 1934 | Box 82 \ 4 scan0043 | |
| Observed distortion and damage to a GB. 873 Front Axle and its related components. | 30th Nov 1934 | Box 82 \ 4 scan0044 | |
| Diagram illustrating the distortion measurements on a 3.B.IV front axle. | 30th Nov 1934 | Box 82 \ 4 scan0045 | |
| Headlamp and wing movement on a Bentley following the fitting of a Wilmot-Breeden bumper. | 30th Nov 1934 | Box 82 \ 4 scan0046 | |
| Cover sheet for performance curves of a Bentley engine fitted with a centrifugal blower. | 1st Dec 1934 | Box 82 \ 4 scan0047 | |
| Graph showing the estimated effect of varying compression ratio on a Bentley engine's performance. | 23th Nov 1934 | Box 82 \ 4 scan0048 | |
| Graph showing the estimated effect of varying boost on a Bentley engine. | 27th Nov 1934 | Box 82 \ 4 scan0049 | |
| Graph showing the estimated performance with boost for a Bentley engine against various ratios. | 28th Nov 1934 | Box 82 \ 4 scan0050 | |
| Performance graph for a B.7 Unit engine, showing BHP and BMEP against RPM for different valve timings and cylinder bore dimensions. | 15th Sep 1934 | Box 82 \ 4 scan0051 | |
| Graph comparing the performance of a standard cylinder head against a high compression cylinder head. | 31th Aug 1934 | Box 82 \ 4 scan0052 | |
| Issues and proposed solutions for headlamp and wing movement on Bentley cars. | 1st Dec 1934 | Box 82 \ 4 scan0053 | |
| Continuation of a memo on a Bentley car complaint, detailing a planned modification to centrally mount the wings, radiator, and lamps. | 1st Dec 1934 | Box 82 \ 4 scan0054 | |
| To the Repair Department detailing work to be carried out on car 1-B-IV. | 3rd Dec 1934 | Box 82 \ 4 scan0055 | |
| Arranging a visit to the Kingsbury Depot to discuss issues with a Bentley. | 5th Dec 1934 | Box 82 \ 4 scan0056 | |
| Headlamp and wing movement on Bentley cars, including supplier issues and safety concerns regarding bumper mounting. | 5th Dec 1934 | Box 82 \ 4 scan0057 | |
| Serious nature of brake shudders and body troubles, and their potential causes. | 5th Dec 1934 | Box 82 \ 4 scan0058 | |
| Material and plating issues for a Bentley oil filler tube. | 12th Dec 1934 | Box 82 \ 4 scan0059 | |
| Summary of major differences in brake mechanisms for the Bentley 3.5 Litre Production Chassis. | 14th Dec 1934 | Box 82 \ 4 scan0060 | |
| List of modifications to front brake and steering components, including dimensions and materials. | 14th Dec 1934 | Box 82 \ 4 scan0061 | |
| Summary of major differences in brake mechanisms for the Bentley 3.5 Litre Production Chassis. | 14th Dec 1934 | Box 82 \ 4 scan0062 | |
| List of alterations and specifications for front brakes, brake shoes, and steering components. | 14th Dec 1934 | Box 82 \ 4 scan0063 | |
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