| Description | Date | Identifier | |
| Field report detailing performance and issues with a Phantom III test car in France. | 22th Mar 1937 | Box 91 \ 1 scan0494 | |
| Hand-drawn diagram of an N.S.R. Lockheed Hydraulic Jack with an oil leak annotation. | 22th Mar 1937 | Box 91 \ 1 scan0495 | |
| Sending designs for the Wraith III Engine, specifically for the relief valves, external oil fittings, and wheelcase. | 22th Mar 1937 | Box 91 \ 1 scan0496 | |
| EP Test report on the Phantom III Experimental Car 37-EX, detailing performance, improvements, and faults. | 1st Apr 1937 | Box 91 \ 1 scan0497 | |
| List of faults and performance issues observed in a vehicle, numbered (a) through (g). | 1st Apr 1937 | Box 91 \ 1 scan0498 | |
| Brake performance issues, such as squeaking and shuddering, and the resulting effect on steering. | 14th Dec 1937 | Box 91 \ 1 scan0499 | |
| Comparison table of specific engine capacities for Bentley, 25/30, and Phantom III models. | 3rd May 1937 | Box 91 \ 1 scan0500 | |
| Table listing the weights of various parts for 1937 Buick models. | 24th Mar 1937 | Box 91 \ 1 scan0501 | |
| Big end loadings for the Ph.III engine. | 15th May 1937 | Box 91 \ 1 scan0502 | |
| Polar diagram illustrating the inertia loadings on a PH III engine's big end bearing at 4500 RPM. | 16th May 1937 | Box 91 \ 1 scan0503 | |
| Comparative table of engine specifications for various car manufacturers. | 19th May 1937 | Box 91 \ 1 scan0504 | |
| Note comparing the weight of a Square engine to a Phoenix engine. | 19th May 1937 | Box 91 \ 1 scan0505 | |
| Comparison table of engine specifications for various American car models. | 19th May 1937 | Box 91 \ 1 scan0506 | |
| Log book entry detailing vehicle faults and performance issues. | 19th May 1937 | Box 91 \ 1 scan0507 | |
| Chart detailing the weekly Phantom III chassis output programme from the erecting bay to the test department for the latter half of 1937. | 10th Jun 1937 | Box 91 \ 1 scan0508 | |
| Work instructions for car 37-EX, including radiator, gearbox, and brake maintenance. | 16th Jun 1937 | Box 91 \ 1 scan0509 | |
| Test report memo for the 33-EX model detailing various performance issues observed over a weekend. | 21th Jun 1937 | Box 91 \ 1 scan0510 | |
| List of twelve modification and repair jobs to be carried out on car 37-EX. | 21th Jun 1937 | Box 91 \ 1 scan0511 | |
| Short memo confirming that over 300 Phantom III cars have been delivered to customers. | 30th Jun 1937 | Box 91 \ 1 scan0512 | |
| Works chart detailing the weekly chassis output programme for the Phantom III model for the latter half of 1937. | 15th Jul 1937 | Box 91 \ 1 scan0513 | |
| Works chart showing the planned weekly chassis output for the Phantom III model from August to December 1937. | 9th Aug 1937 | Box 91 \ 1 scan0514 | |
| Design considerations for the P.III. Series II model, comparing it with the Wraith and Bentley III. | 20th Aug 1937 | Box 91 \ 1 scan0515 | |
| Numbered list of technical considerations and proposed modifications for various vehicle components. | 20th Aug 1937 | Box 91 \ 1 scan0516 | |
| List of technical considerations and proposed changes for future vehicle models, including the Wraith and Phantom. | 20th Aug 1937 | Box 91 \ 1 scan0517 | |
| Standardisation of a steady bracket for the ignition control tube on the Phantom III. | 18th Jun 1937 | Box 91 \ 1 scan0518 | |
| Cost estimation and approval sheet for the standardisation of an ignition control tube for the Phantom III model. | 16th Aug 1937 | Box 91 \ 1 scan0519 | |
| Dynamo drive bush seizure and a proposal for a trial with alternative materials. | 30th Aug 1937 | Box 91 \ 1 scan0520 | |
| Instructions for re-assembling a PH.III No.6 unit with a new crankshaft and bearings following an endurance run failure. | 7th Sep 1937 | Box 91 \ 1 scan0521 | |
| Updates and testing on Phantom III valve gear and big end bearings. | 13th Sep 1937 | Box 91 \ 1 scan0522 | |
| Cost-reduction modifications to the Phantom III Oil Level Indicator float arm. | 15th Sep 1937 | Box 91 \ 1 scan0523 | |
| Status update on the completion of six jobs related to the Phantom engine. | 1st Oct 1937 | Box 91 \ 1 scan0524 | |
| Cost-cutting measures for the Phantom III experimental program and the disposal of several test vehicles. | 20th Oct 1937 | Box 91 \ 1 scan0525 | |
| Outlining required design work for the Ph.III model based on French testing results. | 29th Sep 1937 | Box 91 \ 1 scan0526 | |
| Outlining the Phantom III experimental programme, focusing on cost reduction and reviewing the status of various tests and chassis. | 9th Nov 1937 | Box 91 \ 1 scan0527 | |
| Test bed running issues, component failures, and design decisions for various car models. | 9th Nov 1937 | Box 91 \ 1 scan0528 | |
| Urging the Bentley 50 project gearbox as an alternative to the existing Wraith box for multiple models. | 9th Nov 1937 | Box 91 \ 1 scan0529 | |
| Potential cost reductions and reliability improvements for the Phantom III model. | 10th Nov 1937 | Box 91 \ 1 scan0530 | |
| List of proposed improvements to make a car more desirable from the customer's point of view. | 10th Nov 1937 | Box 91 \ 1 scan0531 | |
| Phantom III dynamo failures and comparing them to Bentley vehicles which use the same components. | 26th Jan 1938 | Box 91 \ 1 scan0532 | |
| Dynamo failures on the Phantom III, potential causes, and a proposed modification. | 26th Jan 1938 | Box 91 \ 1 scan0533 | |
| Investigating engine roughness in Phantom III experimental cars related to its dual ignition system. | 22th Feb 1938 | Box 91 \ 1 scan0534 | |
| Change to a common ignition timing setting for the Phantom III engine. | 24th Mar 1938 | Box 91 \ 1 scan0535 | |
| Blueprints and modifications for the Phantom III, including a cost request. | 31th May 1938 | Box 91 \ 1 scan0536 | |
| List of proposed modifications for the Phantom III car to reduce production costs. | 10th Jun 1938 | Box 91 \ 1 scan0537 | |
| Modifications and outstanding work for the Wraith and Bentley programmes. | 10th Jun 1938 | Box 91 \ 1 scan0538 | |
| Comparative data table of performance metrics for various car models. | 15th Aug 1938 | Box 91 \ 1 scan0539 | |
| Deletion of hand ignition controls for the Phantom III experimental engine. | 20th Jun 1938 | Box 91 \ 1 scan0540 | |
| Car engine particulars including flywheel/clutch weight, horsepower ratings, and material composition. | 23th Sep 1938 | Box 91 \ 1 scan0541 | |
| Weight and power specifications for the Phantom III 12-cylinder 7300cc engine. | 23th Sep 1938 | Box 91 \ 1 scan0542 | |
| Specification sheet detailing the weights of components for a Bentley 6 Cyl. 3½ x 4½ engine. | 30th Sep 1938 | Box 91 \ 1 scan0543 | |
| Deciding to stop all Design and Experimental work on P.III. | 30th Sep 1938 | Box 91 \ 1 scan0544 | |
| Alteration to stronger front engine support studs for the Phantom 111. | 10th Oct 1938 | Box 91 \ 1 scan0545 | |
| Improved, larger capacity engine oil filler for the Phantom III model. | 29th Nov 1938 | Box 91 \ 1 scan0546 | |
| The replacement of the Oil Filler for the Phantom III chassis, part E.89407 replacing E.88943. | 2nd Dec 1938 | Box 91 \ 1 scan0547 | |
| Feature list comparing design options for the next Phantom III engine's flywheel and clutch. | 5th Dec 1938 | Box 91 \ 1 scan0548 | |
| List of proposed design alterations for the Phantom III engine for a 15,000 miles test car. | 23th May 1936 | Box 91 \ 1 scan0549 | |
| Table of design modifications listing the design number, parts affected, and remarks for each change. | 23th May 1938 | Box 91 \ 1 scan0550 | |
| List of design alterations affecting various engine and chassis components. | 23th May 1938 | Box 91 \ 1 scan0551 | |
| Sale and overhaul of Experimental Phantom III No. 12 unit for radiator development tests. | 14th Feb 1939 | Box 91 \ 1 scan0552 | |
| Car 32-EX, requesting the fitting of a specially balanced propeller shaft and damper. | 15th Apr 1937 | Box 91 \ 2 scan0001 | |
| Specifying essential parts to be fitted to car 32-EX before it goes to France. | 30th Apr 1937 | Box 91 \ 2 scan0002 | |
| Specification sheet detailing 18 points of modification or assembly for a chassis. | 30th Apr 1937 | Box 91 \ 2 scan0003 | |
| List of specifications and modifications for vehicle suspension, steering, and braking systems. | 30th Apr 1937 | Box 91 \ 2 scan0004 | |
| List of vehicle modifications and checks, categorized into general, engine, and electrical systems. | 30th Apr 1937 | Box 91 \ 2 scan0005 | |
| List of modifications and parts to be fitted, including switches, ignition components, and plugs. | 30th Apr 1937 | Box 91 \ 2 scan0006 | |
| Potential supplier delays for cushion springs for a clutch destined for France. | 30th Apr 1937 | Box 91 \ 2 scan0007 | |
| Requesting modifications to spring housing studs and the replacement of front suspension bearings. | 4th May 1937 | Box 91 \ 2 scan0008 | |
| Request to confirm the location and condition of a tool drawer removed from car 32-EX. | 5th May 1937 | Box 91 \ 2 scan0009 | |
| Request to change the propellor shaft specification to a Hardy Spicer shaft and a 25/30 HP damper. | 7th May 1937 | Box 91 \ 2 scan0010 | |
| Requesting to swap the long travel hand brake from vehicle 35.EX to 32.EX. | 7th May 1937 | Box 91 \ 2 scan0011 | |
| Request to fit an additional external petrol pipe on chassis 32-EX. | 11th May 1937 | Box 91 \ 2 scan0012 | |
| Request to examine and fit new diaphragms to the petrol pumps from vehicle 32-EX for the 10,000 miles test. | 13th May 1937 | Box 91 \ 2 scan0013 | |
| Instructions for modifications to cross steering tubes to address low speed wobble issues. | 15th May 1937 | Box 91 \ 2 scan0014 | |
| Proposed specification list for the 32-EX car's 15,000-mile test, including handwritten additions. | 15th May 1937 | Box 91 \ 2 scan0015 | |
| With instructions regarding a petrol filter for vehicle 32-EX and suspension pipes for vehicle 35-EX. | 24th May 1937 | Box 91 \ 2 scan0016 | |
| Instruction to fit a scheme for preventing bonnet side hinge rods from working out on 32-EX bonnets for a 15,000-mile test. | 24th May 1937 | Box 91 \ 2 scan0017 | |
| Request to change the rear axle pinion adjustment washer material for car 32-EX before it goes to France. | 26th May 1937 | Box 91 \ 2 scan0018 | |
| Request to get further mileage on an engine coupling and refit it to car 32-EX after a crack test. | 31th May 1937 | Box 91 \ 2 scan0019 | |
| Requesting to fit cross steering tube joints from chassis 35-EX to 32-EX, which should then be rebuilt. | 1st Jun 1937 | Box 91 \ 2 scan0020 | |
| Sg to Rm asking for an update on the status of the 32-EX car's 15,000-mile test. | 3rd Jun 1937 | Box 91 \ 2 scan0021 | |
| Request to arrange for a 3/8 inch diameter petrol pipe to be made and fitted to car 32-EX. | 4th Jun 1937 | Box 91 \ 2 scan0022 | |
| Planned gearbox modification and further testing for the 32-EX car during its 15,000-mile test. | 4th Jun 1937 | Box 91 \ 2 scan0023 | |
| Work order detailing mechanical and electrical repairs for Phantom III, chassis 32-EX. | 4th Jun 1937 | Box 91 \ 2 scan0024 | |
| RS.500 valve spring failures in a Phantom III Engine Unit No.13. | 7th Jun 1937 | Box 91 \ 2 scan0025 | |
| Request to Mr. Whitehead to examine two failed valve springs from a 32-EX engine. | 8th Jun 1937 | Box 91 \ 2 scan0026 | |
| RS.500 valve spring failures in a Phantom III Engine Unit No. 13. | 7th Jun 1937 | Box 91 \ 2 scan0027 | |
| The movements of Phantom III chassis 32-EX for traffic testing. | 9th Jun 1937 | Box 91 \ 2 scan0028 | |
| Modifications to a car's cylinder heads and valve gear following a test. | 10th Jun 1937 | Box 91 \ 2 scan0029 | |
| Broken exhaust valve spring on car 32 EX during a run from Birmingham to London. | 9th Jun 1937 | Box 91 \ 2 scan0030 | |
| Broken cylinder exhaust valve spring on car 32 EX during a road test. | 9th Jun 1937 | Box 91 \ 2 scan0031 | |
| Correcting a previous note to clarify that parts were for chassis 32-EX, not 35-EX. | 12th Jun 1937 | Box 91 \ 2 scan0032 | |
| Suggestion to test car 32-EX for overheating and clutch performance by driving in heavy traffic at Ascot. | 14th Jun 1937 | Box 91 \ 2 scan0033 | |
| List of chassis modifications and checks for car 32-EX. | 15th Jun 1937 | Box 91 \ 2 scan0034 | |
| Fitting and retention of valve springs for unit 32-EX (No.13), and other requested modifications. | 15th Jun 1937 | Box 91 \ 2 scan0035 | |
| Brake faults, specifically 'clonks' and rolling back, due to initial stretch in new brake ropes. | 16th Jun 1937 | Box 91 \ 2 scan0036 | |
| Instruction to fit a standardized radiator outlet elbow and drain cock with a gauze filter to a 32-EX radiator. | 16th Jun 1937 | Box 91 \ 2 scan0037 | |
| Request to replace brass pads on the cross steering tubes due to increased friction and signs of picking up. | 16th Jun 1937 | Box 91 \ 2 scan0038 | |
| Brake faults during London running, specifically investigating clunks and roll-back issues. | 16th Jun 1937 | Box 91 \ 2 scan0039 | |
| Instruction to fit a thermometer to car 32-EX, including modifying the ignition wire tube. | 17th Jun 1937 | Box 91 \ 2 scan0040 | |
| Squeaking Phantom III fan bearings due to low melting point grease, with instructions to repack them. | 17th Jun 1937 | Box 91 \ 2 scan0041 | |
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