| Description | Date | Identifier | |
| Index card concerning radiator steam valves for the W.III and Silver Wraith models. | 29th Jun 1938 | Box 9 \ 3 03-page114 | |
| Removing a radiator matrix unit and instructing the refitting of a steam escape pipe. | 7th Jul 1938 | Box 9 \ 3 03-page115 | |
| Modifications to the Wraith radiator steam escape pipe and valve to prevent water loss. | 18th Jul 1938 | Box 9 \ 3 03-page116 | |
| Proposal to modify the steam escape pipe on 'A' series Wraith radiators for potential cost savings, based on a successful scheme for the 'B' series. | 18th Jul 1938 | Box 9 \ 3 03-page117 | |
| Modification of a radiator matrix unit and the fitting of new mounting blocks. | 20th Jul 1938 | Box 9 \ 3 03-page118 | |
| Requesting the production of two sets of steam valve parts for testing on Wraith experimental cars. | 11th Aug 1938 | Box 9 \ 3 03-page119 | |
| The elimination of baffles from the Wraith III radiator to achieve a time saving. | 12th Aug 1938 | Box 9 \ 3 03-page120 | |
| The modification of the Wraith radiator top tank inlet nozzle and the omission of baffle EW.1170 for cost saving. | 12th Aug 1938 | Box 9 \ 3 03-page121 | |
| Minor alterations to the ventilating scheme for the 28.G.VI car. | 12th Aug 1938 | Box 9 \ 3 03-page122 | |
| Issues and proposed alterations for the Wraith Radiator Steam Valve on 'B' series cars and onward. | 14th Nov 1938 | Box 9 \ 3 03-page123 | |
| Modifications to a chassis by removing a plug, spring, and ball. | 14th Nov 1938 | Box 9 \ 3 03-page124 | |
| Material choice and procurement of steam valve balls for the Wraith radiator. | 22th Nov 1938 | Box 9 \ 3 03-page125 | |
| Note regarding a scheme for the Wraith radiator. | 11th Feb 1939 | Box 9 \ 3 03-page126 | |
| Request to detail a set of fixed radiator shutters for the Wraith model. | 17th Apr 1939 | Box 9 \ 3 03-page127 | |
| Radiator mounting data and dimensions for the Rippletto, Bentley 6, and Cresta models. | 6th Sep 1940 | Box 9 \ 3 03-page128 | |
| Design modifications and comparisons for the Wraith servo mechanism. | 20th Dec 1934 | Box 9 \ 4 04-page01 | |
| Revision to the Wraith II Servo design, comparing its specifications with other contemporary models. | 27th Aug 1936 | Box 9 \ 4 04-page02 | |
| Cost-reduction modifications for the Wraith II Servo, including material changes and component redesigns. | 12th Feb 1937 | Box 9 \ 4 04-page03 | |
| Fault with the Wraith servo and requesting further work to be done in the shop. | 4th Mar 1937 | Box 9 \ 4 04-page04 | |
| Modifications to the Wraith III servo system, including a new rubber stop and pin adjustments. | 12th Mar 1937 | Box 9 \ 4 04-page05 | |
| Investigation into poor braking on two Wraith chassis (24/25.G.VI), detailing servo tests and identifying a fault in the linkage. | 27th Apr 1937 | Box 9 \ 4 04-page06 | |
| Critique on the strength of servo pull-off springs and a related design modification for the Wraith III. | 29th Jul 1937 | Box 9 \ 4 04-page07 | |
| Secret memo regarding the alteration of Wraith servo cams to fix brake squeaks. | 29th Jul 1937 | Box 9 \ 4 04-page08 | |
| The change of bolts for the Wraith III servo balance lever. | 17th Aug 1937 | Box 9 \ 4 04-page09 | |
| Instruction to modify bolts for the Wraith Servo Motor Balance Lever. | 10th Sep 1937 | Box 9 \ 4 04-page10 | |
| Internal memorandum requesting the fitting of specific Wraith servo cams to compensate for different linings. | 15th Nov 1937 | Box 9 \ 4 04-page11 | |
| Order of rubber servo stops for the Wraith and Phantom III models. | 8th Nov 1937 | Box 9 \ 4 04-page12 | |
| The dispatch of six Neoprene rubber buffers for the servo on the first six Wraith cars. | 10th Dec 1937 | Box 9 \ 4 04-page13 | |
| Required modifications to the Wraith servo cams. | 1st Mar 1938 | Box 9 \ 4 04-page14 | |
| Investigation into the causes and prevention of Wraith servo juddering. | 3rd Mar 1938 | Box 9 \ 4 04-page15 | |
| Technical report on the causes and potential cures for mechanical servo brake judder, including experiments with different springs and brake linings. | 3rd Mar 1936 | Box 9 \ 4 04-page16 | |
| Tests conducted on the servo's star springs to eliminate judder, with a recommendation for a new steel clip design. | 3rd Mar 1938 | Box 9 \ 4 04-page17 | |
| Requesting the production of two cast iron servo drums for Wraith & B.III models to resolve issues with steel drums. | 16th Mar 1938 | Box 9 \ 4 04-page18 | |
| Request to manufacture two graphite bronze packing ring discs for a Wraith Servo. | 30th May 1938 | Box 9 \ 4 04-page19 | |
| Alteration to servo operating levers to use a stock of 160 incorrectly produced forgings. | 16th Jun 1936 | Box 9 \ 4 04-page20 | |
| Internal memorandum regarding the sourcing and modification of servo motor star springs for the Wraith model. | 24th Jun 1938 | Box 9 \ 4 04-page21 | |
| Alteration to the rubber stop on the servo reverse link for the Wraith III chassis. | 3rd Jun 1938 | Box 9 \ 4 04-page22 | |
| The substitution of reamed fitting bolts with 3.BA. bolts on the Wraith Servo. | 2nd Sep 1938 | Box 9 \ 4 04-page23 | |
| Groaning noises from the Wraith servo and a proposed change of material to RAD13 to resolve the issue. | 30th Nov 1938 | Box 9 \ 4 04-page24 | |
| Material change from 'Halo' to RAD.13 for the Wraith Servo on the 'C' series chassis. | 30th Nov 1938 | Box 9 \ 4 04-page25 | |
| Use of RAD13 material to resolve a 'servo groan' issue on the Wraith chassis. | 1st Dec 1938 | Box 9 \ 4 04-page26 | |
| Requesting an urgent order for RAD.13 parts for the Wraith Servo due to production issues with 'Halo' material. | 3rd Dec 1938 | Box 9 \ 4 04-page27 | |
| Supply and testing of Wraith servo parts produced in RAD.13 material. | 3rd Dec 1938 | Box 9 \ 4 04-page28 | |
| The delivery and fitting of new servo friction material GW.2148 for the Wraith model to avoid squeaks. | 17th Dec 1938 | Box 9 \ 4 04-page29 | |
| B.5 with Wraith gearbox, referencing another file. | 22th Dec 1938 | Box 9 \ 4 04-page30 | |
| The delivery schedule for liners and clarification on material specifications. | 7th Feb 1939 | Box 9 \ 4 04-page31 | |
| Requesting an order for 228 sets of friction lining for the 25/30-HP chassis servo motor and mechanism. | 6th Feb 1939 | Box 9 \ 4 04-page32 | |
| Request to fit a solid servo back plate to chassis 28.G.VI. | 27th Mar 1939 | Box 9 \ 4 04-page33 | |
| Request to make one set of Wraith servo cams with 30° for experimental work with VG.90 linings. | 7th Jun 1939 | Box 9 \ 4 04-page34 | |
| Instruction to replace a cork plug on the Wraith model's Servo Drive Shaft. | 28th Jun 1939 | Box 9 \ 4 04-page35 | |
| Suspensions and rear seating positions, comparing them with competitor vehicles like Ford and Cadillac. | 18th Oct 1935 | Box 9 \ 5 05-page001 | |
| Limousine seating comfort, engine positioning, and potential chassis design improvements. | 16th Oct 1935 | Box 9 \ 5 05-page002 | |
| Promotional document for the Ford V-8, annotated for a comparison with the Rolls-Royce Wraith. | 1st Mar 1935 | Box 9 \ 5 05-page003 | |
| The development and testing of anti-roll rods for the Phantom III, Wraith II, and 25 HP models. | 24th Mar 1936 | Box 9 \ 5 05-page004 | |
| Two parts relating to the Wraith II model. | 11th Jun 1936 | Box 9 \ 5 05-page005 | |
| The calculation of road springs, stresses, and geometry for the Wraith II front suspension. | 23th Jun 1936 | Box 9 \ 5 05-page006 | |
| Ordering of rear road springs for the Wraith II model, including a blueprint and a request for plate thickness. | 14th Jul 1936 | Box 9 \ 5 05-page007 | |
| Ordering various rear road springs with different poundages for the Wraith model. | 17th Jul 1936 | Box 9 \ 5 05-page008 | |
| Design and material for an oil filler and level indicator for the Wraith II front shock damper. | 18th Aug 1936 | Box 9 \ 5 05-page009 | |
| Proposed modifications for the rear road springs on the first Wraith II car. | 6th Oct 1936 | Box 9 \ 5 05-page010 | |
| Blueprint and ordering instructions for the rear road springs of the Wraith II first chassis. | 22th Oct 1936 | Box 9 \ 5 05-page011 | |
| Requesting recommendations for the poundage of rear road springs for the first Wraith II car. | 23th Oct 1936 | Box 9 \ 5 05-page012 | |
| Suggesting the modification of existing Wraith II rear road springs to a new drawing. | 26th Oct 1936 | Box 9 \ 5 05-page013 | |
| Inability to re-set cadmium-plated rear road springs for the Wraith II. | 27th Oct 1936 | Box 9 \ 5 05-page014 | |
| On Wraith road springs, detailing the dangers of re-heat treating plated springs due to metal penetration. | 29th Oct 1936 | Box 9 \ 5 05-page015 | |
| Simplified lubricating coil pipe for the Wraith II front suspension, comparing it to the Phantom III. | 22th Jan 1937 | Box 9 \ 5 05-page016 | |
| Design considerations and clearance issues for the Wraith II front suspension lower triangle. | 1st Feb 1937 | Box 9 \ 5 05-page017 | |
| Assembly of a Wraith II Front Roll Rod and proposing a modified design based on an American version. | 2nd Feb 1937 | Box 9 \ 5 05-page018 | |
| Use and positioning of a rear anti-roll bar on a Wraith II with a Phantom III rear axle. | 2nd Feb 1937 | Box 9 \ 5 05-page019 | |
| Letter to Samuel Fox & Co. Ltd. clarifying the weight of a spring and providing a print for a centre bolt. | 3rd Feb 1937 | Box 9 \ 5 05-page020 | |
| Letter to Messrs. Thos. Firth & John Brown Ltd. regarding the return of a print. | 3rd Feb 1937 | Box 9 \ 5 05-page021 | |
| Need to redesign and lighten the upper triangle levers for the Wraith II and Phantom III independent front wheel suspension. | 6th Feb 1937 | Box 9 \ 5 05-page022 | |
| Modifications for the Wraith II Independent Front Suspension to resolve issues found on the first car. | 8th Feb 1937 | Box 9 \ 5 05-page023 | |
| Design changes and solutions for yoke piece clamping bolts, an oil pipe, and a lower bearing. | 8th Feb 1937 | Box 9 \ 5 05-page024 | |
| Modification to the Wraith II front suspension main forging fixing bolts. | 9th Feb 1937 | Box 9 \ 5 05-page025 | |
| Use of plain bearings instead of rubber bushes for the Wraith II rear road springs. | 20th Feb 1937 | Box 9 \ 5 05-page026 | |
| Preliminary schemes for a new independent front wheel suspension for the Wraith III. | 27th Feb 1937 | Box 9 \ 5 05-page027 | |
| Design changes and providing blueprints for a vehicle mock-up. | 4th Sep 1936 | Box 9 \ 5 05-page028 | |
| Modifications to the Wraith II front hub, stub axle, and pivot. | 4th Sep 1936 | Box 9 \ 5 05-page029 | |
| Request to refit rubber shackles to the road springs of car 24.G.6. | 10th Mar 1937 | Box 9 \ 5 05-page030 | |
| Wraith III Independent Front Wheel Suspension with exposed road springs and separate dampers. | 12th Mar 1937 | Box 9 \ 5 05-page031 | |
| Urgent internal memo to order 4 needle bearings from Hoffmans. | 15th Mar 1937 | Box 9 \ 5 05-page032 | |
| Confirming the handover of schemes for a mock-up of the new front suspension for the Wraith III. | 17th Mar 1937 | Box 9 \ 5 05-page033 | |
| Listing design scheme prints for the Wraith III new suspension, delivered for costing purposes. | 17th Mar 1937 | Box 9 \ 5 05-page034 | |
| Letter from English Steel Corporation regarding two coil springs for print N.Sch 5071, detailing dimensions and delivery arrangements. | 18th Mar 1937 | Box 9 \ 5 05-page035 | |
| Modified and simplified rear spring pad for the Wraith model, superseding a previous design. | 18th Mar 1937 | Box 9 \ 5 05-page036 | |
| Design and issues of the Wraith independent suspension system. | 22th Mar 1937 | Box 9 \ 5 05-page037 | |
| Buick design scheme, a Derby proposal, and the successful use of rubber bushings by Cadillac. | 24th Mar 1937 | Box 9 \ 5 05-page038 | |
| Micro-examination report on a Wraith front suspension coil spring that failed a bumper test. | 24th Mar 1937 | Box 9 \ 5 05-page039 | |
| The design schemes for the Wraith III open coil spring front suspension. | 31th Mar 1937 | Box 9 \ 5 05-page040 | |
| Secret memo confirming the handover of blueprints related to the Wraith III open spring front suspension. | 31th Mar 1937 | Box 9 \ 5 05-page041 | |
| Micro-examination report detailing cracks found on a front suspension lever after a bumper test. | 5th Apr 1937 | Box 9 \ 5 05-page042 | |
| Photomicrograph showing a cross-section of a material with a surface crack. | 1st Oct 1935 | Box 9 \ 5 05-page043 | |
| Cover sheet with two handwritten reference numbers. | 1st Oct 1935 | Box 9 \ 5 05-page044 | |
| Photomicrograph showing a crack in a material's microstructure. | 1st Oct 1935 | Box 9 \ 5 05-page045 | |
| Cover or separator page with handwritten reference numbers. | 8th Apr 1937 | Box 9 \ 5 05-page046 | |
| Secret memo detailing weight-saving modifications for the Wraith III front suspension main forging. | 8th Apr 1937 | Box 9 \ 5 05-page047 | |
| List of five design and manufacturing modifications made to a component. | 8th Apr 1937 | Box 9 \ 5 05-page048 | |
| Inadequate bending stiffness of the Wraith III front suspension front pan and proposed modifications. | 8th Apr 1937 | Box 9 \ 5 05-page049 | |
| Modifications to a lever bearing housing, radiator attachment forgings, and a stiffened pan. | 12th Apr 1937 | Box 9 \ 5 05-page050 | |
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