| Description | Date | Identifier | |
| List of modifications and instructions for gearbox, servo, and related components. | 5th Oct 1937 | Box 6 \ 6 06-page343 | |
| List of specifications and modifications for various vehicle components including the servo motor, clutch, radiator and bonnet. | 1st Mar 1937 | Box 6 \ 6 06-page344 | |
| List of specifications for various vehicle components including bumpers, fan, exhaust, and wheel carrier. | 5th Oct 1937 | Box 6 \ 6 06-page345 | |
| List of modifications for engine components including the crankcase, crankshaft, and spring drive. | 5th Oct 1937 | Box 6 \ 6 06-page346 | |
| List of modifications and specifications for engine components, including connecting rods, pistons, cylinders, and valves. | 5th Oct 1937 | Box 6 \ 6 06-page347 | |
| List of modifications and part specifications for various engine components. | 5th Oct 1937 | Box 6 \ 6 06-page348 | |
| List of instructions and modifications for various engine drives and fittings. | 5th Oct 1937 | Box 6 \ 6 06-page349 | |
| List of modifications and parts for water and oil systems. | 5th Oct 1937 | Box 6 \ 6 06-page350 | |
| List of operations for fitting various vehicle components, including electrical systems. | 5th Oct 1937 | Box 6 \ 6 06-page351 | |
| List of 'LOP' references for various electrical components. | 6th Oct 1938 | Box 6 \ 6 06-page352 | |
| List of electrical components with their corresponding LOP (List of Parts) numbers. | 6th Oct 1937 | Box 6 \ 6 06-page353 | |
| List of specifications for a body lighting junction box, electrical petrol pumps, and a footswitch. | 5th Oct 1937 | Box 6 \ 6 06-page354 | |
| The modified position of the oil level indicator for the Wraith III and Bentley III models. | 1st Oct 1937 | Box 6 \ 6 06-page355 | |
| Programme of work and tests recently carried out on Wraith cars. | 11th Oct 1937 | Box 6 \ 6 06-page356 | |
| List of steering, starting, cooling, and engine mounting tests. | 27th Sep 1941 | Box 6 \ 6 06-page357 | |
| Work instruction list for modifications to a Wraith Car 24.G.V1. | 14th Oct 1937 | Box 6 \ 6 06-page358 | |
| Instructions regarding tracings for the revision of the Wraith III Chassis Oil Sump Indicator. | 14th Oct 1937 | Box 6 \ 6 06-page359 | |
| Rebuilding the first Wraith car and the wheel movement on the Phantom III model. | 14th Oct 1937 | Box 6 \ 6 06-page360 | |
| Alterations to Wraith induction pipes to allow for testing with a horizontal carburetter. | 15th Oct 1937 | Box 6 \ 6 06-page361 | |
| Repair work for car 25.G.Vl. including brake, steering and engine issues. | 18th Oct 1937 | Box 6 \ 6 06-page362 | |
| Instructions to dismantle an engine front to check slipper wheel poundage and investigate an over-run rattle. | 25th Oct 1937 | Box 6 \ 6 06-page363 | |
| Three jobs to be carried out on car 20.G.V1 in the Fitting Shop. | 26th Oct 1937 | Box 6 \ 6 06-page364 | |
| List of jobs to be performed on a Wraith car (24.G.VI) in the fitting shop. | 27th Oct 1937 | Box 6 \ 6 06-page365 | |
| List of tracings for the Wraith III Chassis Controls, sent for revision or addition of operations. | 29th Oct 1937 | Box 6 \ 6 06-page366 | |
| Instructing for the production of 6 sets to an L.O.P. | 29th Oct 1937 | Box 6 \ 6 06-page367 | |
| List of fitting shop jobs for a Wraith 25.G.VI regarding the clutch, rear springs and exhaust system. | 30th Oct 1937 | Box 6 \ 6 06-page368 | |
| Comparison of two Wraith models, 24.G.VI and 28.G.VI. | 2nd Nov 1937 | Box 6 \ 6 06-page369 | |
| Instructions for modifications to a Wraith 24.G.VI regarding exhaust rattle, engine mounting, and pedal linkage. | 4th Nov 1937 | Box 6 \ 6 06-page370 | |
| Issuance of an index sheet and blueprint for 6 sets of the Wraith III chassis. | 4th Nov 1937 | Box 6 \ 6 06-page371 | |
| Requesting the fitting of a dynamo to a Wraith car (27.G.V1) for night use and an adjustment to the rear axle gears. | 8th Nov 1937 | Box 6 \ 6 06-page372 | |
| Log book entry detailing a list of vehicle faults and observations from a test. | 16th Nov 1937 | Box 6 \ 6 06-page373 | |
| The accumulated mileage of Wraith cars as part of a development program. | 17th Nov 1937 | Box 6 \ 6 06-page374 | |
| Instruction to fit rear road springs and examine the change speed lever on a Wraith Car 25.G.VI. | 13th Nov 1937 | Box 6 \ 6 06-page375 | |
| Test results and required modifications for the Wraith III unit. | 19th Nov 1937 | Box 6 \ 6 06-page376 | |
| List of modification jobs for a Wraith car, 28.G.VI. | 20th Nov 1937 | Box 6 \ 6 06-page377 | |
| List of required modifications and work to be done on the Wraith Car 24.G.VI. | 22th Nov 1937 | Box 6 \ 6 06-page378 | |
| Objectionable axle whine in a Wraith car, requesting an examination of the rear axle gears. | 22th Nov 1937 | Box 6 \ 6 06-page379 | |
| Engine tie for the Wraith III, noting it is no longer required in its current form. | 23th Nov 1937 | Box 6 \ 6 06-page380 | |
| List of parts for a Gear Box modification on a Wraith III chassis, enabling diamond boring for motion shaft bearings. | 24th Nov 1937 | Box 6 \ 6 06-page381 | |
| Test drive report and feedback on the Wraith 27-G-6 Brown Saloon. | 25th Nov 1937 | Box 6 \ 6 06-page382 | |
| Requested alterations and observed issues on the Wraith III units. | 25th Nov 1937 | Box 6 \ 6 06-page383 | |
| Report on the failure of 25.G.VI on the Wirksworth Road. | 27th Nov 1937 | Box 6 \ 6 06-page384 | |
| Tests to diagnose an engine's failure to start, focusing on coil and ballast resistor performance. | 27th Nov 1937 | Box 6 \ 6 06-page385 | |
| Outlining a planned cold start test in the open air to check for effects not seen in the cold chamber. | 27th Nov 1937 | Box 6 \ 6 06-page386 | |
| Engine unit modifications for the Wraith III model. | 1st Dec 1937 | Box 6 \ 6 06-page387 | |
| List of additional workshop jobs for Wraith Car 24.G.VI. | 1st Dec 1937 | Box 6 \ 6 06-page388 | |
| List of jobs to be carried out on Wraith car 25.G.VI. | 6th Dec 1937 | Box 6 \ 6 06-page389 | |
| Modifications to be made to car 27.G.V1 while in the shop. | 7th Dec 1937 | Box 6 \ 6 06-page390 | |
| Requesting to fit a plate for the pedal shaft link on a Wraith Car 25.G.V1. | 8th Dec 1937 | Box 6 \ 6 06-page391 | |
| Modifications to Wraith III units concerning the spring drive friction washer and valve grummets. | 8th Dec 1937 | Box 6 \ 6 06-page392 | |
| Requesting the installation of a thermometer union to check the calorstat on a 27.G.VI car. | 9th Dec 1937 | Box 6 \ 6 06-page393 | |
| Requesting the fitting of parts to experimental Wraith cars to finalise the specification before work begins on the S.III. | 13th Dec 1937 | Box 6 \ 6 06-page394 | |
| List of parts required to update Wraith cars and the allocation of engine units. | 13th Dec 1937 | Box 6 \ 6 06-page395 | |
| List of parts with corresponding car models and quantities required. | 13th Dec 1937 | Box 6 \ 6 06-page396 | |
| List of engine part modifications and specifications with applicable car models and quantities. | 13th Dec 1937 | Box 6 \ 6 06-page397 | |
| Test report memorandum detailing nine points of feedback on a Wraith car. | 13th Dec 1937 | Box 6 \ 6 06-page398 | |
| Requesting the removal of an inertia ring from a Wraith car for fitting to another. | 14th Dec 1937 | Box 6 \ 6 06-page399 | |
| Issues found during a week of use of a Wraith car ending December 20th. | 20th Dec 1937 | Box 6 \ 6 06-page400 | |
| Test report detailing observations on a car's performance, including heater effectiveness, handling, and component feedback. | 20th Dec 1937 | Box 6 \ 6 06-page401 | |
| List of Wraith cars categorized by color and body style with associated codes. | 21th Dec 1937 | Box 6 \ 6 06-page402 | |
| Requesting oversight for mounting the bodies on the first six production Wraith cars. | 24th Dec 1937 | Box 6 \ 6 06-page403 | |
| Issues found with a car's chassis and coachwork after a road test over the Christmas holidays. | 29th Dec 1937 | Box 6 \ 6 06-page404 | |
| List of observations and complaints about a vehicle's features and performance, page 2. | 29th Dec 1937 | Box 6 \ 6 06-page405 | |
| Performance of the brakes and steering during a 450-mile road test on car 27.O.VI. | 29th Dec 1937 | Box 6 \ 6 06-page406 | |
| Faults found during a 450-mile road test over Christmas. | 29th Dec 1937 | Box 6 \ 6 06-page407 | |
| List of observations and faults found during a vehicle test, covering engine tick-over, heater, and wipers. | 29th Dec 1937 | Box 6 \ 6 06-page408 | |
| Proposal for moving the fuse box and reducing the number of fuses for the Wraith model. | 30th Dec 1937 | Box 6 \ 6 06-page409 | |
| Log book entry for a test run, detailing feedback on the suspension, engine, brakes, and noise levels of a car. | 3rd Jan 1938 | Box 6 \ 6 06-page410 | |
| Requesting a specification for the first 100 Wraith III chassis, detailing the release status of engine, electrical, and chassis sections. | 3rd Jan 1938 | Box 6 \ 6 06-page411 | |
| Checklist of vehicle components under the categories of Engine, Electrical, and Chassis, with handwritten annotations and sign-off. | 3rd Jan 1938 | Box 6 \ 6 06-page412 | |
| List of comments and issues with a vehicle's chassis and coachwork following a week-end test run. | 3rd Jan 1938 | Box 6 \ 6 06-page413 | |
| List of notes detailing adjustments and modifications to various interior components. | 3rd Jan 1936 | Box 6 \ 6 06-page414 | |
| Modifications to the Wraith III Spring Drive units, specifically the drilling of holes in the friction disc for lubrication. | 7th Jan 1938 | Box 6 \ 6 06-page415 | |
| Conference notes discussing the release status of various Wraith engine components. | 7th Jan 1938 | Box 6 \ 6 06-page416 | |
| Status of various electrical and chassis components, indicating holds and release conditions. | 7th Jan 1938 | Box 6 \ 6 06-page417 | |
| Log book entry from a test drive noting positive feedback on the brakes, but issues with the engine idling, carburettor, ammeter, and suspension. | 8th Jan 1938 | Box 6 \ 6 06-page418 | |
| Agreeing to a car specification with a request to fit the latest tec-control steering column. | 13th Jan 1937 | Box 6 \ 6 06-page419 | |
| Vibration troubles with existing 1/4 inch push rods, requesting a new set of 5/16 inch diameter rods be made for the Wraith III. | 13th Jan 1938 | Box 6 \ 6 06-page420 | |
| Requesting assistance for the compilation of a Shop Manual for the Wraith. | 15th Jan 1938 | Box 6 \ 6 06-page421 | |
| Test drive, noting vibration, rattles, and the performance of dampers, oil retainers, and brakes. | 17th Jan 1938 | Box 6 \ 6 06-page422 | |
| Delay in the completion of drawings for tools for the Wraith Chassis. | 21th Jan 1938 | Box 6 \ 6 06-page423 | |
| Trial for a new slipper wheel damper on a Wraith engine. | 24th Jan 1938 | Box 6 \ 6 06-page424 | |
| The pipes and wiring for the Wraith III, specifically about a coiled oil pipe from the frame to the governor control. | 27th Jan 1938 | Box 6 \ 6 06-page425 | |
| Potential ineffectiveness of the Wraith III cam balancer and requesting a new scheme with it deleted for experimental trials. | 27th Jan 1938 | Box 6 \ 6 06-page426 | |
| Parts to be fitted and performance data to be recorded for a 15,000-mile vehicle test. | 29th Jan 1938 | Box 6 \ 6 06-page427 | |
| Obtaining bottles for rig tests and returning a 'Cuber Finer' filter for investigation. | 29th Jan 1938 | Box 6 \ 6 06-page428 | |
| Request for the centre of gravity and moment of inertia of the Wraith engine unit for a questionnaire. | 3rd May 1938 | Box 6 \ 6 06-page429 | |
| Requesting information on a Wraith engine unit and offering to supply one from the test bed. | 4th May 1938 | Box 6 \ 6 06-page430 | |
| Recommending a car be used for a Continental tour to accumulate mileage on specific parts. | 16th Jul 1938 | Box 6 \ 6 06-page431 | |
| Breakages in the 20 HP exhaust system due to expansion and proposing a new sliding joint design. | 11th Mar 1925 | Box 6 \ 7 07-page001 | |
| Standardisation report for a lock plate on the exhaust pipe nut to prevent it from working loose. | 8th Oct 1925 | Box 6 \ 7 07-page002 | |
| Modifications to the 20 HP induction and exhaust pipes with a strengthened flange. | 2nd Mar 1926 | Box 6 \ 7 07-page003 | |
| Approval to proceed with an aluminium induction pipe for the 30 HP engine. | 24th Mar 1926 | Box 6 \ 7 07-page004 | |
| Confirming Mr. Royce's instruction to proceed with work on 20 HP induction and exhaust pipes. | 25th Mar 1926 | Box 6 \ 7 07-page005 | |
| Recurring breakages of the exhaust downtake bracket on the 20HP chassis and proposed solutions. | 30th Mar 1926 | Box 6 \ 7 07-page006 | |
| Experiments with compression ratio and the exhaust system on a 20 HP engine. | 1st May 1926 | Box 6 \ 7 07-page007 | |
| Engine performance tests, comparing different compression ratios and analysing power output, frictional losses and detonation. | 1st May 1926 | Box 6 \ 7 07-page008 | |
| Tests of a piston with a deep concave head to reduce engine detonation. | 1st May 1926 | Box 6 \ 7 07-page009 | |
| Tests conducted to determine and reduce power loss caused by various parts of the exhaust system. | 1st May 1926 | Box 6 \ 7 07-page010 | |
| Report page detailing experiments on engine exhaust manifolds, silencers and back pressure. | 1st May 1926 | Box 6 \ 7 07-page011 | |
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