| Description | Date | Identifier | |
| Chassis and body torsion test results for a Wraith 24 G.VI 7 Passenger Limousine with a 0.128 inch thick frame with large holes. | 27th May 1937 | Box 8 \ 10 10-page113 | |
| Chassis and body torsion test results for a Wraith 24 G VI 7-passenger limousine. | 27th May 1937 | Box 8 \ 10 10-page114 | |
| Data table for chassis and body torsion tests on a Wraith 24. G. VI. model. | 29th May 1937 | Box 8 \ 10 10-page115 | |
| Chassis and body torsion test results for a Wraith 24 G. VI model with front wings and bonnet. | 29th May 1937 | Box 8 \ 10 10-page116 | |
| Data table showing the results of chassis and body torsion tests for a Wraith 'Bumper' chassis. | 10th Jun 1937 | Box 8 \ 10 10-page117 | |
| Torsion test results for the Wraith 'Bumper' chassis and body. | 10th Jun 1937 | Box 8 \ 10 10-page118 | |
| Table of results for chassis and body torsion tests on a Wraith Chassis 26 G.VI. | 17th Jun 1937 | Box 8 \ 10 10-page119 | |
| Chassis and body torsion test results for a Wraith Chassis 26 GVI with front cross channel. | 17th Jun 1937 | Box 8 \ 10 10-page120 | |
| Chassis and body torsion test results for a Wraith Chassis 26 G.VI without the front cross channel. | 17th Jun 1937 | Box 8 \ 10 10-page121 | |
| Chassis and body torsion test results for an Oldsmobile Saloon with a Fisher Body. | 15th Jun 1937 | Box 8 \ 10 10-page122 | |
| Chassis and body torsion test results for an Oldsmobile Saloon with a Fisher Body. | 15th Jun 1937 | Box 8 \ 10 10-page123 | |
| Torsion test results for a Packard Saloon with an all-steel body. | 3rd Jun 1937 | Box 8 \ 10 10-page124 | |
| Torsion test results for a Packard Saloon with an all-steel body. | 3rd Jun 1937 | Box 8 \ 10 10-page125 | |
| Chassis and body torsion test results for a Packard chassis with front wings, including hysteresis. | 8th Jun 1937 | Box 8 \ 10 10-page126 | |
| Chassis and body torsion test results for a Packard chassis with front wings, without hysteresis. | 8th Jun 1937 | Box 8 \ 10 10-page127 | |
| Blueprint graph of chassis and body torsion tests for a Wraith 25 G VI Continental Touring Saloon. | 25th May 1937 | Box 8 \ 10 10-page128 | |
| Graph detailing chassis and body torsion test results for a Wraith Continental Touring Saloon. | 25th May 1937 | Box 8 \ 10 10-page129 | |
| Graph showing chassis and body torsion test results for a Wraith 24 G VI 7 Passenger Limousine. | 27th May 1937 | Box 8 \ 10 10-page130 | |
| Graph of chassis and body torsion tests for a Wraith 24 G VI 7 Passenger Limousine. | 27th May 1937 | Box 8 \ 10 10-page131 | |
| Graph showing the results of torsion tests on a Wraith 24 6 VI chassis and body. | 29th May 1937 | Box 8 \ 10 10-page132 | |
| Graph showing the results of chassis and body torsion tests for a Wraith 24 G VI. | 29th May 1937 | Box 8 \ 10 10-page133 | |
| Graph showing the results of chassis and body torsion tests for the Wraith 'Bumper' chassis. | 10th Jun 1937 | Box 8 \ 10 10-page134 | |
| Graph of chassis and body torsion tests for the Wraith 'Bumper' chassis. | 10th Jun 1937 | Box 8 \ 10 10-page135 | |
| Graph showing the results of chassis and body torsion tests for a Wraith chassis. | 7th Jun 1937 | Box 8 \ 10 10-page136 | |
| Graph showing the results of chassis and body torsion tests for a Wraith chassis. | 17th Jun 1937 | Box 8 \ 10 10-page137 | |
| Graph of chassis and body torsion tests for a Wraith 26 G VI chassis. | 17th Jun 1937 | Box 8 \ 10 10-page138 | |
| Chassis and body torsion test results for an Oldsmobile Saloon with a Fisher Body. | 15th Jun 1937 | Box 8 \ 10 10-page139 | |
| Graph of chassis and body torsion tests for an Oldsmobile Saloon with a Fisher Body. | 15th Jun 1937 | Box 8 \ 10 10-page140 | |
| Graph showing chassis and body torsion tests with hysteresis for a Packard Saloon all-steel body. | 3rd Jun 1937 | Box 8 \ 10 10-page141 | |
| Graph detailing chassis and body torsion tests for a Packard Saloon all-steel body. | 3rd Jun 1937 | Box 8 \ 10 10-page142 | |
| Graph of chassis and body torsion tests conducted on a Packard chassis with front wings, showing hysteresis. | 8th Jun 1937 | Box 8 \ 10 10-page143 | |
| Graph detailing chassis and body torsion tests for a Packard chassis. | 8th Jun 1937 | Box 8 \ 10 10-page144 | |
| Forwarding blueprints for Wraith III Chassis engine mounting parts. | 28th Aug 1937 | Box 8 \ 10 10-page145 | |
| Scheme for a modified fixing for the frame end bracket on the Wraith III model. | 9th Sep 1937 | Box 8 \ 10 10-page146 | |
| Issuance of the List of Parts (L.O.P.) for the Wraith III Chassis frame and fittings. | 13th Oct 1937 | Box 8 \ 10 10-page147 | |
| Requesting an order for six sets of parts for the Wraith III chassis frame and fittings. | 15th Oct 1937 | Box 8 \ 10 10-page148 | |
| Parts required for 6 sets of the Wraith III Chassis Frame & Fittings. | 16th Oct 1937 | Box 8 \ 10 10-page149 | |
| Modification to the Wraith III front frame extension. | 20th Oct 1937 | Box 8 \ 10 10-page150 | |
| List of parts to be ordered for 6 sets of Wraith III Chassis frames supplied by Rubery Owens. | 23th Oct 1937 | Box 8 \ 10 10-page151 | |
| Listing various parts and detailing the issue of their associated drawings and prints to suppliers. | 23th Oct 1937 | Box 8 \ 10 10-page152 | |
| Parts list detailing bolts, nuts, washers and rivets for various frame and support components. | 23th Oct 1937 | Box 8 \ 10 10-page153 | |
| Order for six sets of parts for the Wraith III chassis frame and fittings. | 25th Oct 1937 | Box 8 \ 10 10-page154 | |
| List of parts including nuts, washers, studs, rivets, and a bolt, with a request to issue blueprints. | 23th Oct 1937 | Box 8 \ 10 10-page155 | |
| Compilation and issuance of List of Parts (L.O.P.) sheets for the Wraith III Chassis frame and fittings. | 30th Oct 1937 | Box 8 \ 10 10-page156 | |
| The supply and assembly of the Wraith III chassis frame by Rubery Owens. | 30th Oct 1937 | Box 8 \ 10 10-page157 | |
| The dispatch of blueprints for various parts to Rubery Owens and RHC/S.S. | 30th Oct 1937 | Box 8 \ 10 10-page158 | |
| Creation of alternative undershields for the Wraith model. | 9th Nov 1937 | Box 8 \ 10 10-page159 | |
| Modifications to the Wraith III chassis frame and fittings, specifically the position of hand holes for piping. | 10th Nov 1937 | Box 8 \ 10 10-page160 | |
| Visit to Messrs Rubery Owen Ltd. regarding additional costs and delays for Wraith frames and dies. | 29th Nov 1937 | Box 8 \ 10 10-page161 | |
| Delivery delays for frames from supplier Rubery Owen due to a change in material specification. | 1st Dec 1937 | Box 8 \ 10 10-page162 | |
| Letter to coachbuilder Park Ward & Co. Ltd. outlining specifications for a new Continental Touring Limousine body. | 1st Dec 1937 | Box 8 \ 10 10-page163 | |
| Letter discussing the painting of wheels and the fitting of interior covers and squabs to a car body. | 3rd Dec 1937 | Box 8 \ 10 10-page164 | |
| Technical memorandum regarding frame and fitting parts for the Wraith III chassis, supplied by Rubery Owens. | 3rd Dec 1937 | Box 8 \ 10 10-page165 | |
| Requesting prints for a washer part be forwarded to Rubery Owens. | 3rd Dec 1937 | Box 8 \ 10 10-page166 | |
| Instruction to hold work on a list of engine mounting parts for six Wraith III chassis. | 7th Dec 1937 | Box 8 \ 10 10-page167 | |
| Engine mounting and frame bracket changes for six Wraith III chassis. | 14th Dec 1937 | Box 8 \ 10 10-page168 | |
| Modification notice for Wraith III chassis cruciform plates to increase clearance for the exhaust system. | 18th Dec 1937 | Box 8 \ 10 10-page169 | |
| Production delays and cost increases for Wraith frames from supplier Rubery Owens. | 9th Apr 1939 | Box 8 \ 10 10-page170 | |
| Secret memo regarding the increasing price of Wraith frames from supplier Rubery Owen. | 11th Apr 1938 | Box 8 \ 10 10-page171 | |
| The use of 'Superflexit' flexible piping for the Wraith III riding control pipes. | 27th Apr 1938 | Box 8 \ 10 10-page172 | |
| Instructions for a modified triangular high front engine mounting for the Wraith model. | 4th Jul 1938 | Box 8 \ 10 10-page173 | |
| Brief acknowledgement memo concerning the scuttle attachment to a Wraith III frame. | 9th Jul 1938 | Box 8 \ 10 10-page174 | |
| Proposed schemes for the Wraith III's simplified body bottom side and hand brake lever. | 8th Mar 1938 | Box 8 \ 10 10-page175 | |
| The urgent order of a Wraith Frame Cruciform member from Rubery Owen. | 10th Nov 1938 | Box 8 \ 10 10-page176 | |
| Modification to remove weakening gashes from the Wraith frame cross member. | 31th Jan 1939 | Box 8 \ 10 10-page177 | |
| The Wraith gearbox, discussing associated drawings, servo drive comparisons, and high ratio gears for Bentley. | 5th Sep 1934 | Box 8 \ 11 11-page001 | |
| Design differences between the Wraith and Spectre gearboxes, referencing specific schematics. | 20th Sep 1934 | Box 8 \ 11 11-page002 | |
| Design and specifications of the Wraith Gearbox. | 27th Aug 1934 | Box 8 \ 11 11-page003 | |
| Requesting to alter instructions for the Wraith Gearbox special bearings. | 18th Oct 1934 | Box 8 \ 11 11-page004 | |
| Modifications to the Wraith Gearbox regarding spline grinding clearance. | 1st Oct 1934 | Box 8 \ 11 11-page005 | |
| Lightening holes and anti-rattle features for the Wraith Gearbox, noting its use on the Bentley. | 4th Oct 1934 | Box 8 \ 11 11-page006 | |
| Proposal to modify the Wraith Gearbox by rotating cam pins to prevent interference between slots and spring plungers. | 5th Oct 1934 | Box 8 \ 11 11-page007 | |
| The specifications of the 1st speed pinion for the Wraith Gearbox. | 12th Oct 1934 | Box 8 \ 11 11-page008 | |
| Modification to the Wraith Gearbox selector lock housing. | 25th Oct 1934 | Box 8 \ 11 11-page009 | |
| The interchangeability of a gearbox part for the Wraith model with one from the Spectre. | 25th Oct 1934 | Box 8 \ 11 11-page010 | |
| Alternative design for the Wraith Gearbox 2nd speed synchromesh. | 1st Nov 1934 | Box 8 \ 11 11-page011 | |
| Scheme for plain spherically mounted bearings on the second speed selector shaft for the Wraith Gearbox. | 21th Nov 1934 | Box 8 \ 11 11-page012 | |
| Modifications to the servo and speedometer drive for the Wraith Gearbox. | 21th Nov 1934 | Box 8 \ 11 11-page013 | |
| Modifications to the Wraith gearbox casing to accommodate a larger servo. | 19th Dec 1934 | Box 8 \ 11 11-page014 | |
| Cost-reduction modifications for the Wraith Gearbox rocking shaft. | 8th May 1935 | Box 8 \ 11 11-page015 | |
| Secret memo detailing modifications to the Wraith gearbox based on schematics 4488 and 4494. | 17th May 1935 | Box 8 \ 11 11-page016 | |
| Requesting the modification of a servo drive shaft for a Wraith Gearbox to reduce weight. | 22th May 1935 | Box 8 \ 11 11-page017 | |
| Revision of the Wraith Gearbox design for cost savings and the synchromesh mechanism. | 24th Feb 1936 | Box 8 \ 11 11-page018 | |
| Suggesting a cost reduction for the Wraith gearbox by abolishing the grinding of gears and instead using a lapping finishing process. | 27th Feb 1936 | Box 8 \ 11 11-page019 | |
| Production methods and potential issues for the Wraith Gear Box. | 23th Mar 1936 | Box 8 \ 11 11-page020 | |
| Use of ball bearings with spring rings for the Wraith Gearbox to reduce machining costs. | 23th Apr 1936 | Box 8 \ 11 11-page021 | |
| Continuation sheet of a document regarding a price enquiry. | 22th Apr 1936 | Box 8 \ 11 11-page022 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. confirming their willingness to supply bearings. | 3rd Apr 1936 | Box 8 \ 11 11-page023 | |
| Letter from a supplier discussing the standardization and cost of bearings with recessed outer races. | 27th Mar 1936 | Box 8 \ 11 11-page024 | |
| Letter from Ransome & Marles Bearing Co. Ltd. discussing the supply and specifications of bearings with spring rings. | 27th Mar 1936 | Box 8 \ 11 11-page025 | |
| The concluding page of a letter from Ransome & Marles Bearing Co. Ltd. | 8th May 1936 | Box 8 \ 11 11-page026 | |
| Proposed modification to the Wraith gearbox gear lever, suggesting a trial on a Bentley. | 8th May 1936 | Box 8 \ 11 11-page027 | |
| The actuation gear, servo, and speedometer drive for the Wraith II gearbox, comparing it to Phantom models and specifying ratios. | 29th Jun 1936 | Box 8 \ 11 11-page028 | |
| Design proposals and specifications for the Wraith II gearbox. | 26th Jun 1936 | Box 8 \ 11 11-page029 | |
| Specifications and comparisons for gearbox components, particularly in relation to the Phantom III. | 8th Jul 1936 | Box 8 \ 11 11-page030 | |
| Schedule N.Sch.4849, detailing the lightening holes in the Wraith II gearbox's top and third speed sliding piece. | 8th Jul 1936 | Box 8 \ 11 11-page031 | |
| Drawing H.Sch.4848, showing lightening holes in the top and third speed sliding piece for the Wraith II Gearbox. | 8th Jul 1936 | Box 8 \ 11 11-page032 | |
| Drawings for the Wraith II gearbox casing and actuating mechanism. | 13th Jul 1936 | Box 8 \ 11 11-page033 | |
| Drawings for the Wraith II gearbox casing. | 13th Jul 1936 | Box 8 \ 11 11-page034 | |
| Design and dismantling procedure for the Wraith II gearbox. | 17th Jul 1936 | Box 8 \ 11 11-page035 | |
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