| Description | Date | Identifier | |
| Order for steering rollers and spring clips for experimental use on Wraith and Ph.III models. | 18th Dec 1936 | Box 153 \ 2 scan0216 | |
| Letter to Messrs Ransome & Marles Bearing Co. Ltd. requesting the manufacture of steering roller assemblies. | 18th Dec 1936 | Box 153 \ 2 scan0217 | |
| Official order for a steering roller from The Adamant Engineering Co. | 18th Dec 1936 | Box 153 \ 2 scan0218 | |
| Requesting to fit a roller follower, made by Messrs Ransome & Marles, to the rig steering box. | 18th Dec 1936 | Box 153 \ 2 scan0219 | |
| Letter from Ransome & Marles Bearing Co. regarding steering roller assemblies and associated drawings. | 22th Dec 1936 | Box 153 \ 2 scan0220 | |
| Requesting an order to be issued to the Adamant Engineering Co. for serrating a Drop Arm. | 24th Dec 1936 | Box 153 \ 2 scan0221 | |
| Letter to The Adamant Engineering Co. Ltd. regarding the cutting of splines on a pendulum lever and chasing an outstanding order for cams and rollers. | 26th Nov 1936 | Box 153 \ 2 scan0222 | |
| Request for a cost estimate on changing the finish of steering gear components to achieve savings. | 13th Jan 1937 | Box 153 \ 2 scan0223 | |
| Letter to the Adamant Engineering Co. Ltd. chasing the delivery of three replacement steering cams and one roller. | 13th Jan 1937 | Box 153 \ 2 scan0224 | |
| Alternative finishing costs for steering column tubes. | 13th Jan 1937 | Box 153 \ 2 scan0225 | |
| Request for a second cam roller to grind the track on four replace inners for steering cam roller assemblies. | 14th Jan 1937 | Box 153 \ 2 scan0226 | |
| Increase in quantity for an existing order of steering rollers and adding a new order for modified assemblies and a repair. | 14th Jan 1937 | Box 153 \ 2 scan0227 | |
| Steering roller follower assembly be sent for examination. | 16th Jan 1937 | Box 153 \ 2 scan0228 | |
| Letter from Adamant Engineering Company regarding a delay in completing an order for three replacement cams. | 14th Jan 1937 | Box 153 \ 2 scan0229 | |
| Letter to Messrs Ransome & Marles Bearing Co. Ltd. regarding experiments on steering rollers, their failures, and design improvements. | 18th Jan 1937 | Box 153 \ 2 scan0230 | |
| Letter discussing the failure of a roller during testing and arranging for the supply and repair of various roller assemblies. | 27th Jan 1937 | Box 153 \ 2 scan0231 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding a delivery delay and enclosed drawings for steering gear rollers. | 27th Jan 1937 | Box 153 \ 2 scan0232 | |
| Comparison document discussing the merits of Marles type versus worm and nut type steering gears. | 1st Feb 1937 | Box 153 \ 2 scan0233 | |
| Comparing Marles and Worm and Nut steering gears, including weights and production issues for P.III, Bentley and Wraith models. | 1st Feb 1937 | Box 153 \ 2 scan0234 | |
| Report comparing the maintenance requirements and costs of Marles and Worm & Nut gear systems. | 1st Feb 1937 | Box 153 \ 2 scan0235 | |
| Cost comparison of steering gear types, concluding with a recommendation for the Bentley III model. | 1st Feb 1937 | Box 153 \ 2 scan0236 | |
| Brief report on the condition of 39 rollers from supplier Ransome & Marles. | 10th Feb 1937 | Box 153 \ 2 scan0237 | |
| 'Marles' steering gear for all cars, including a customer's letter comparing it to previous steering systems. | 10th Feb 1937 | Box 153 \ 2 scan0238 | |
| Steering issue on a 25/30 HP car, comparing it to other steering systems and past investigations. | 12th Feb 1937 | Box 153 \ 2 scan0239 | |
| Letter to Ransome and Marles Bearing Co. Ltd. clarifying a dimension discrepancy on a drawing. | 13th Feb 1937 | Box 153 \ 2 scan0240 | |
| Letter to Adamant Engineering Co.Ltd. requesting a delivery date for replacement cams. | 16th Feb 1937 | Box 153 \ 2 scan0241 | |
| Letter to a bearing company discussing the design of roller grooves and requesting revised prints and assemblies. | 17th Feb 1937 | Box 153 \ 2 scan0242 | |
| Letter concerning the standardization of a Roller Assembly and production delays for ordered parts. | 17th Feb 1937 | Box 153 \ 2 scan0243 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding steering cam rollers. | 16th Feb 1937 | Box 153 \ 2 scan0244 | |
| Forwarding a copy of a letter received from Messrs Ransome & Marles. | 19th Feb 1937 | Box 153 \ 2 scan0245 | |
| Letter from Ransome & Marles Bearing Co. regarding the dimensions and drawings for a steering cam roller assembly. | 18th Feb 1937 | Box 153 \ 2 scan0246 | |
| Letter to a supplier confirming a preference for narrow groove steering rollers and accepting an alternative to expedite delivery. | 19th Feb 1937 | Box 153 \ 2 scan0247 | |
| Letter from Adamant Engineering Company regarding delays and production issues with Cams. | 20th Feb 1937 | Box 153 \ 2 scan0248 | |
| Letter from Adamant Engineering Co. Ltd. discussing supply availability in Derby. | 20th Feb 1937 | Box 153 \ 2 scan0249 | |
| Request to examine a fractured 0.250 dia. ball from a 25/30 HP steering roller follower for material faults. | 23th Feb 1937 | Box 153 \ 2 scan0250 | |
| Letter to The Adamant Engineering Co., Ltd. regarding received cams and a missing Roller Follower. | 23th Feb 1937 | Box 153 \ 2 scan0251 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding a manufacturing misunderstanding on steering gear cam roller grooves. | 22th Feb 1937 | Box 153 \ 2 scan0252 | |
| Letter from Ransome & Marles Bearing Co. regarding a drawing, a misunderstanding, and a query on delivery and price. | 22th Feb 1937 | Box 153 \ 2 scan0253 | |
| Letter from Adamant Engineering Co. Ltd. regarding the return of Roller Part No. M.22168. | 24th Feb 1936 | Box 153 \ 2 scan0254 | |
| Micro-examination report on a steel ball from a Ransome & Marles bearing. | 25th Feb 1937 | Box 153 \ 2 scan0255 | |
| Photomicrograph showing the granular structure of a material surface at 150x magnification. | 1st Oct 1935 | Box 153 \ 2 scan0256 | |
| Letter from Adamant Engineering confirming the delivery date for two special Cams. | 26th Feb 1937 | Box 153 \ 2 scan0257 | |
| Letter to Ransome & Marles Bearing Co.Ltd regarding steering roller modifications and experimental rollers. | 27th Feb 1937 | Box 153 \ 2 scan0258 | |
| Letter from Adamant Engineering Company regarding the return and modification of a 3½ Litre Bentley Steering Gear. | 3rd Mar 1937 | Box 153 \ 2 scan0259 | |
| Correspondence from Adamant Engineering Company regarding the fitting of a new type of screw. | 3rd Mar 1937 | Box 153 \ 2 scan0260 | |
| Telegram received by telephone concerning the dispatch of Bentley gears to Derby. | 4th Mar 1937 | Box 153 \ 2 scan0261 | |
| Telegram received by telephone regarding the dispatch of experimental Bentley gears. | 4th Feb 1937 | Box 153 \ 2 scan0262 | |
| Telegram regarding the dispatch of an experimental Bentley gear. | 1st Mar 1937 | Box 153 \ 2 scan0263 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regretting their inability to supply a roller assembly due to being oversubscribed with armament programme orders. | 4th Mar 1937 | Box 153 \ 2 scan0264 | |
| To Mr. Hardy regarding an unpaid invoice from Ransome & Marles Bearing Co. Ltd for various parts. | 5th Mar 1937 | Box 153 \ 2 scan0265 | |
| Letter from Ransome & Marles Bearing Co. regarding an invoice for reconditioning 26 Cam Rollers. | 1st Mar 1937 | Box 153 \ 2 scan0266 | |
| Letter from a bearing manufacturer regarding the production of steering cam rollers and specific design features. | 5th Mar 1937 | Box 153 \ 2 scan0267 | |
| Confirming instructions were given to Roy to send a covering order for parts, referencing previous memos. | 6th Mar 1937 | Box 153 \ 2 scan0268 | |
| Letter to Ransome & Marles Bearing Co. Ltd. regarding the supply of steering rollers and drawing F.61355. | 15th Mar 1937 | Box 153 \ 2 scan0269 | |
| Follow-up on an enquiry to Messrs. Ransome & Marles for Outer Race and Rollers for R2 series steering. | 15th Mar 1937 | Box 153 \ 2 scan0270 | |
| Letter from Ransome & Marles Bearing Co., Ltd. regarding production capacity and order fulfillment. | 24th Mar 1937 | Box 153 \ 2 scan0271 | |
| Page 2 of a letter from Ransome & Marles Bearing Co. Ltd. regarding parts supply, obligations, and recent enquiries. | 24th Mar 1937 | Box 153 \ 2 scan0272 | |
| Letter confirming a telephone conversation and an arranged appointment with Ransome & Marles Bearing Co. Ltd. | 22th Mar 1937 | Box 153 \ 2 scan0273 | |
| Letter to The Hoffman Manufacturing Co. Ltd. confirming a visit arrangement. | 1st Apr 1937 | Box 153 \ 2 scan0274 | |
| Letter to The Hoffman Manufacturing Co. Ltd. confirming specifications for Roller Follower Assemblies. | 5th Apr 1937 | Box 153 \ 2 scan0275 | |
| Letter discussing production specifications, timelines, and orders for assemblies and distance pieces. | 6th Apr 1937 | Box 153 \ 2 scan0276 | |
| Sourcing of Marles steering roller followers from Hoffmanns after Ransome & Marles were unable to fulfil orders. | 6th Apr 1937 | Box 153 \ 2 scan0277 | |
| Requesting new drawings for the 25/30.HP. Roller components due to confusion with the current versions. | 6th Apr 1937 | Box 153 \ 2 scan0278 | |
| Visit to Ransome & Marles regarding the production and grinding of steering rollers. | 3rd Apr 1937 | Box 153 \ 2 scan0279 | |
| Letter chasing an overdue order for experimental steering rollers from a supplier. | 12th Apr 1937 | Box 153 \ 2 scan0280 | |
| Letter from Adamant Engineering regarding the failure of a '410' type Steering Gear and recommending a Needle type Roller. | 12th Apr 1937 | Box 153 \ 2 scan0281 | |
| Letter from Adamant Engineering regarding the substitution of a ball type roller for a needle type roller in a steering gear. | 12th Apr 1937 | Box 153 \ 2 scan0282 | |
| Driver's seat visibility tests on various car models and steering types. | 13th Apr 1937 | Box 153 \ 2 scan0283 | |
| Letter discussing vehicle dimensions, pillar visibility, and correspondence with the S.M.M.T. | 15th Apr 1937 | Box 153 \ 2 scan0284 | |
| Blueprint detailing the driver's visibility for a 32 Ex Park Ward Saloon 'E' Type. | 15th Apr 1937 | Box 153 \ 2 scan0285 | |
| Blueprint diagram for a Thrupp & Maberly Limousine with 'C' type steering, showing angles from the driver's position. | 15th Apr 1937 | Box 153 \ 2 scan0286 | |
| Blueprint diagram showing measurements from the driver's position for a 5.B.4 Bentley Saloon by Park Ward. | 16th Apr 1937 | Box 153 \ 2 scan0287 | |
| Blueprint for the 'E' type steering on a 37 EX Sedanca de Ville by Park Ward. | 16th Apr 1931 | Box 153 \ 2 scan0288 | |
| Letter from a bearing manufacturer explaining delays and providing a revised delivery schedule for experimental rollers. | 13th Apr 1937 | Box 153 \ 2 scan0289 | |
| Order for steering roller assemblies to be sent to The Hoffmann Manufacturing Co. | 15th Apr 1937 | Box 153 \ 2 scan0290 | |
| Letter to Hoffmann Manufacturing Co. Ltd. regarding new drawings, orders, and component specifications for steering rollers. | 15th Apr 1937 | Box 153 \ 2 scan0291 | |
| Page 2 of a letter to The Hoffmann Mfg. Co. requesting a quotation for smaller rollers. | 15th Apr 1937 | Box 153 \ 2 scan0292 | |
| Driver visibility, proposals to the S.M.M.T., and reducing the radiator cap height on the Phantom III model. | 15th Apr 1937 | Box 153 \ 2 scan0293 | |
| Letter to The Society of Motor Manufacturers & Traders Ltd. regarding amended proposals for visibility from the driver's seat. | 15th Apr 1937 | Box 153 \ 2 scan0294 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. discussing bearing assembly specifications and limits. | 20th Apr 1937 | Box 153 \ 2 scan0295 | |
| Blueprint of a component showing a cross-section with proposed dimensional limits. | 19th Apr 1937 | Box 153 \ 2 scan0296 | |
| Letter from Hoffmann Manufacturing to correct a previously misquoted drawing number. | 26th Apr 1937 | Box 153 \ 2 scan0297 | |
| Letter to Hoffmann Manufacturing Co. Ltd. regarding drawing alterations and print modifications. | 27th Apr 1937 | Box 153 \ 2 scan0298 | |
| Letter from Hoffmann Manufacturing Co. Ltd. acknowledging an enquiry. | 28th Apr 1937 | Box 153 \ 2 scan0299 | |
| Letter to The Hoffmann Manufacturing Co., Ltd. regarding alterations to drawings and assembly widths. | 1st May 1937 | Box 153 \ 2 scan0300 | |
| Letter from Hoffmann Manufacturing regarding the supply of retaining rings for a steering cam roller assembly. | 4th May 1937 | Box 153 \ 2 scan0301 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. acknowledging a previous letter and awaiting revised prints. | 6th May 1937 | Box 153 \ 2 scan0302 | |
| Letter to Hoffmann Manufacturing Co. Ltd. regarding alterations to steering rollers. | 10th May 1937 | Box 153 \ 2 scan0303 | |
| Letter to The Hoffmann Manufacturing Co. Ltd. regarding the supply of retaining rings for steering rollers. | 10th May 1937 | Box 153 \ 2 scan0304 | |
| Acknowledgement of an enquiry from The Hoffmann Manufacturing Co. Ltd. | 11th May 1937 | Box 153 \ 2 scan0305 | |
| Request to place a retrospective order for a Bentley Chassis gear and an order for Wraith spring clips from Adamant Engineering Co. | 15th Apr 1937 | Box 153 \ 2 scan0306 | |
| Letter from The Hoffmann Manufacturing Co. Ltd. regarding a satisfactory review of drawings, with a suggested deletion of the limit on the inner race. | 5th May 1937 | Box 153 \ 2 scan0307 | |
| Letter from a supplier enclosing a drawing for a bearing, specifying limits and confirming proceeding with experimental sets. | 18th May 1937 | Box 153 \ 2 scan0308 | |
| Letter to The Hoffmann Manufacturing Co. Ltd. enclosing a revised print of F.61469. | 26th May 1937 | Box 153 \ 2 scan0309 | |
| Letter to The Hoffmann Manufacturing Co. Ltd. regarding the alteration and enclosure of revised prints. | 26th May 1937 | Box 153 \ 2 scan0310 | |
| Acknowledgment of enquiry from The Hoffmann Manufacturing Co. Ltd. to Rolls Royce Ltd. | 27th May 1937 | Box 153 \ 2 scan0311 | |
| Letter from Hoffmann Manufacturing Co. Ltd. acknowledging receipt of a drawing. | 28th May 1937 | Box 153 \ 2 scan0312 | |
| Letter from Hoffmann Manufacturing concerning revised prints and the supply of initial sets with specific axial interference. | 28th May 1937 | Box 153 \ 2 scan0313 | |
| With sketches for a new die-cast Steering Column Control Quadrant insert and assembly design. | 29th May 1937 | Box 153 \ 2 scan0314 | |
| Invoice from Ferodo Ltd. for moulded discs, requesting a covering order for payment. | 5th Jun 1937 | Box 153 \ 2 scan0315 | |
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