| Description | Date | Identifier | |
| Letter from Dunlop Rubber Co. Ltd. confirming a meeting arrangement with Mr. G.W. Hancock. | 26th Feb 1935 | Box 139 \ 2 scan0206 | |
| Letter from Dunlop Rubber Co. concerning the development of a new type of jack for Bentley cars. | 12th Mar 1935 | Box 139 \ 2 scan0207 | |
| Letter to The Dunlop Rubber Co. Ltd. regarding the production and testing of a sample Jack for a car. | 14th Mar 1935 | Box 139 \ 2 scan0208 | |
| Letter from Dunlop Rubber Co. explaining a delay in delivering a sample Jack due to production issues. | 15th Mar 1935 | Box 139 \ 2 scan0209 | |
| Letter to Jenks Bros. requesting details on their jacking system for potential use on a 3½ litre Bentley. | 21th Mar 1935 | Box 139 \ 2 scan0210 | |
| Letter from Jenks Brothers Ltd. regarding their Stevenson Jacking System for a 3½ litre Bentley Car. | 22th Mar 1935 | Box 139 \ 2 scan0211 | |
| New scheme for jacking up the rear axle, which is an improvement on a previous design. | 25th Feb 1935 | Box 139 \ 2 scan0212 | |
| Blueprint for a mechanical device named 'Auto-Jacker' showing open and closed positions. | 14th Feb 1935 | Box 139 \ 2 scan0213 | |
| Despatch of a Front Hydraulic Jack Bracket for replacement. | 26th Mar 1935 | Box 139 \ 2 scan0214 | |
| Letter to S. Smith & Sons regarding fractured Jack Brackets and arranging an urgent repair for vehicle 5-B-IV. | 27th Mar 1935 | Box 139 \ 2 scan0215 | |
| Telegram advising that a mechanic is coming to Derby and a letter will follow. | 28th Mar 1935 | Box 139 \ 2 scan0216 | |
| Letter to S. Smith & Sons regarding a delay in work on car 5-B-IV and instructing them to stop their mechanic from coming. | 28th Mar 1935 | Box 139 \ 2 scan0217 | |
| Letter from S. Smith & Sons regarding a report of a rear bracket fracture. | 28th Mar 1935 | Box 139 \ 2 scan0218 | |
| Letter to D. Sessions & Co. Ltd. regarding drawings for hydraulic jack pumps and modifications to front jacking systems. | 29th Mar 1935 | Box 139 \ 2 scan0219 | |
| Letter from S. Smith & Sons regarding the availability of a 5.B.LV Bentley for Jack adjustment. | 29th Mar 1935 | Box 139 \ 2 scan0220 | |
| Letter from Donald Sessions & Company Ltd. chasing up blueprints for a water pump counter-shaft drive and shaft speed information. | 29th Mar 1935 | Box 139 \ 2 scan0221 | |
| Letter from Donald Sessions & Co. Ltd. discussing blueprints for water pump drives, hydraulic jacks, and front fitting modifications. | 3rd Apr 1935 | Box 139 \ 2 scan0222 | |
| Blueprint for a front bracket for a 20/25 HP model. | 26th Nov 1934 | Box 139 \ 2 scan0223 | |
| Letter to S. Smith & Sons requesting drawings and operating pressure details for 2-stage Jacks. | 4th Apr 1935 | Box 139 \ 2 scan0224 | |
| Letter from Dunlop Rubber Co., Ltd. regarding a preliminary sample of a new type of Jack. | 4th Apr 1935 | Box 139 \ 2 scan0225 | |
| Letter to Donald Sessions & Co. Ltd. regarding blueprint modifications and a works visit. | 5th Apr 1935 | Box 139 \ 2 scan0226 | |
| The despatch of a Hydraulic Pump & Reservoir for repair. | 8th Apr 1935 | Box 139 \ 2 scan0227 | |
| Letter to Smith & Sons regarding a leaking hydraulic pump and reservoir unit from chassis 28-EX. | 8th Apr 1935 | Box 139 \ 2 scan0228 | |
| Test drive report detailing performance issues with a Phantom II - 28-EX vehicle. | 8th Apr 1935 | Box 139 \ 2 scan0229 | |
| Acquisition of Smith's Hydraulic 4-wheel Jacks for a 15,000-mile test in France. | 8th Apr 1935 | Box 139 \ 2 scan0230 | |
| Troubleshooting of hydraulic jacks on car model 28-EX, noting a failure due to a rough valve facing. | 9th Apr 1935 | Box 139 \ 2 scan0231 | |
| Transferring Smith's hydraulic 4-wheel jacks from an old car to another. | 10th Apr 1935 | Box 139 \ 2 scan0232 | |
| Letter from S. Smith & Sons regarding the repair and return of an interior-fitting distributor box from chassis 28EX. | 10th Apr 1935 | Box 139 \ 2 scan0233 | |
| Sending jacks with chassis GZU-24 to Derby for the sales department's attention. | 10th Apr 1935 | Box 139 \ 2 scan0234 | |
| Comparison of a Buick Jack against a similar type by Dunlop. | 11th Apr 1935 | Box 139 \ 2 scan0235 | |
| Letter from British Tool & Engineering Co. Ltd. regarding a delay in designing an experimental system for a Bentley car due to a material shortage. | 11th Apr 1935 | Box 139 \ 2 scan0236 | |
| Two 'foreign' brackets presumed to be part of the Jack equipment for chassis GZU-24. | 12th Apr 1935 | Box 139 \ 2 scan0237 | |
| Sending a sample portable jack and handle to Messrs. Lake & Elliot Ltd. for modifications. | 16th Apr 1935 | Box 139 \ 2 scan0238 | |
| The weight required to overcome spring tension in single and double lift hydraulic jacks. | 7th May 1935 | Box 139 \ 2 scan0239 | |
| Letter chasing progress on a jacking scheme for a Bentley chassis from The British Tool & Engineering Co. | 8th May 1935 | Box 139 \ 2 scan0240 | |
| Update on the status of hydraulic jacks. | 1st May 1935 | Box 139 \ 2 scan0241 | |
| Letter from a supplier regarding a delay in fitting an experimental Jacking System to a Bentley Chassis. | 9th May 1935 | Box 139 \ 2 scan0242 | |
| Letter to The Dunlop Rubber Co. Ltd. chasing up a modified Dunlop Jack. | 10th May 1935 | Box 139 \ 2 scan0243 | |
| Follow-up request for a reply concerning a lightened Dunlop jack for the Bentley tool kit. | 10th May 1935 | Box 139 \ 2 scan0244 | |
| Failure of a lightened Bentley Jack submitted by Dunlop. | 13th May 1935 | Box 139 \ 2 scan0245 | |
| The performance and issues with hydraulic jacks, pumps, and pipe lines fitted to various test cars. | 14th May 1935 | Box 139 \ 2 scan0246 | |
| The performance and issues with a hydraulic pump, jacks, and brackets after 10,000 miles of testing. | 14th May 1935 | Box 139 \ 2 scan0247 | |
| Letter from Dunlop Rubber Co. regarding a new type of Jack for Bentley Chasses. | 14th May 1935 | Box 139 \ 2 scan0248 | |
| Letter from Dunlop Rubber Co. Ltd. concluding a discussion about the testing of a jack. | 1st Jan 1934 | Box 139 \ 2 scan0249 | |
| Letter to The British Tool & Engineering Co. Ltd. regarding the installation of a Stevenson's Jacking System. | 15th May 1935 | Box 139 \ 2 scan0250 | |
| The load figures required to operate a single stage rear hydraulic jack removed from a 28-EX. | 15th May 1935 | Box 139 \ 2 scan0251 | |
| Request to issue an official order for one tin of Hydraulic Jack Fluid. | 15th May 1935 | Box 139 \ 2 scan0252 | |
| Despatch of two hydraulic rams for repair. | 15th May 1935 | Box 139 \ 2 scan0253 | |
| Letter to S. Smith & Sons regarding the return and inspection of faulty 'Jackalls' from chassis 28-EX. | 15th May 1935 | Box 139 \ 2 scan0254 | |
| Letter from S. Smith & Sons regarding the dismantling and return of two jacks from a chassis. | 17th May 1935 | Box 139 \ 2 scan0255 | |
| Letter to S. Smith & Sons acknowledging receipt of jacks and 'Jackall' fluid, awaiting their report. | 23th May 1935 | Box 139 \ 2 scan0256 | |
| Letter to Dunlop concerning specifications for modified Bentley jacks. | 23th May 1935 | Box 139 \ 2 scan0257 | |
| Request for a pair of strengthened front brackets for the 'Jackall' system following a failure during testing in France. | 24th May 1935 | Box 139 \ 2 scan0258 | |
| Letter from S. Smith & Sons regarding the receipt of repaired jacks, fluid, and a pending report. | 24th May 1935 | Box 139 \ 2 scan0259 | |
| Letter from S. Smith & Sons regarding a fractured front axle Jackall bracket on a Bentley and the dispatch of a strengthened replacement pair. | 25th May 1935 | Box 139 \ 2 scan0260 | |
| Letter from S. Smith & Sons regarding Jackall bracket fractures and leaking Ram replacements for a chassis. | 25th May 1935 | Box 139 \ 2 scan0261 | |
| Letter from S. Smith & Sons regarding the provision of replacement jacks. | 25th May 1935 | Box 139 \ 2 scan0262 | |
| The dispatch of a hydraulic ram for repair. | 25th May 1935 | Box 139 \ 2 scan0263 | |
| Letter to S. Smith & Sons regarding a faulty 'Jackall' jack from chassis 28-EX returned for investigation. | 25th May 1935 | Box 139 \ 2 scan0264 | |
| Strengthened front brackets for a 'Jackalls' jacking system test. | 27th May 1935 | Box 139 \ 2 scan0265 | |
| Arranging the despatch of two front brackets for a jacking system to France. | 27th May 1935 | Box 139 \ 2 scan0266 | |
| Letter to S. Smith & Sons regarding the testing and fitting of 'Jackalls' jacking systems on chassis 28-EX. | 27th May 1935 | Box 139 \ 2 scan0267 | |
| Letter from S. Smith & Sons regarding front brackets for chassis 5B-1V, a distributor box, and the return of a tested jack. | 29th May 1935 | Box 139 \ 2 scan0268 | |
| Letter requesting a pair of front flexes to replace a broken Lockheed flex on a test vehicle. | 3rd Jun 1935 | Box 139 \ 2 scan0269 | |
| Letter to S. Smith & Sons regarding receipt of their letter and a jack, mentioning a Distributor Box. | 3rd Jun 1935 | Box 139 \ 2 scan0270 | |
| Letter from a supplier chasing an official order for fluid. | 4th Jun 1935 | Box 139 \ 2 scan0271 | |
| Letter from S. Smith & Sons regarding the despatch and return of motor accessories. | 4th Jun 1935 | Box 139 \ 2 scan0272 | |
| Letter from S. Smith & Sons regarding the supply of replacement Lockheed Flex parts and a distributor box. | 4th Jun 1935 | Box 139 \ 2 scan0273 | |
| Despatching new Lockheed flexes for broken hydraulic jacks. | 5th Jun 1935 | Box 139 \ 2 scan0274 | |
| Letter to the British Tool & Engineering Co. Ltd. regarding a delay in fitting a Stevenson Jack system to a Bentley. | 5th Jun 1935 | Box 139 \ 2 scan0275 | |
| Letter to S. Smith & Sons regarding a Bracket, Flex, and 'Jackall' fluid. | 5th Jun 1935 | Box 139 \ 2 scan0276 | |
| Letter from S. Smith & Sons regarding a duplicated order dispatch for fluid. | 6th Jun 1935 | Box 139 \ 2 scan0277 | |
| Letter from Dunlop Rubber Co. Ltd. regarding a revised sample of a new type of jack for Bentley Chasses. | 6th Jun 1935 | Box 139 \ 2 scan0278 | |
| Letter from Dunlop Rubber Co. Ltd. regarding a revised sample and awaiting further instructions. | 1st Jan 1935 | Box 139 \ 2 scan0279 | |
| Letter to Messrs. S. Smith & Sons regarding tracing a tin of 'Jackall' fluid and issuing an official order. | 12th Jun 1935 | Box 139 \ 2 scan0280 | |
| Duplicated order for 'Jackall' Hydraulic Fluid and requesting a new order to cover the extra item received. | 12th Jun 1935 | Box 139 \ 2 scan0281 | |
| Secret memo regarding the temporary fitment of D.W.S. screw jacks to the Spectre model rear axle, pending a hydraulic jacking system. | 14th Jun 1935 | Box 139 \ 2 scan0282 | |
| The modifications required to fit a 'long range' D.W.S. screw jack to the front of the Spectre car. | 14th Jun 1935 | Box 139 \ 2 scan0283 | |
| Request for further information regarding a lightened Dunlop jack for a Bentley. | 14th Jun 1935 | Box 139 \ 2 scan0284 | |
| Approval of a lightened Dunlop jack for Bentley vehicles to be produced by Dunlops. | 14th Jun 1935 | Box 139 \ 2 scan0285 | |
| Secret and confidential memo discussing the development of a jacking system for the 'Spectre' programme. | 14th Jun 1935 | Box 139 \ 2 scan0286 | |
| The design considerations for the Spectre model's permanent, built-in jacking systems. | 14th Jun 1935 | Box 139 \ 2 scan0287 | |
| Design considerations for hydraulic jacking systems, comparing the 'Jackall' system to a new confidential 'D.W.S.' system. | 18th Jun 1935 | Box 139 \ 2 scan0288 | |
| Pros and cons of different jacking systems for the Spectre model. | 18th Jun 1935 | Box 139 \ 2 scan0289 | |
| Letter from Dunlop Rubber Co. Ltd. concerning the failure of a sample Jack for Bentley Chasses. | 20th Jun 1935 | Box 139 \ 2 scan0290 | |
| Letter to Dunlop Rubber Co. Ltd. regarding the failure of a new type of jack for a Bentley Chassis. | 21th Jun 1935 | Box 139 \ 2 scan0291 | |
| Secret memo discussing the jacking system for the Spectre, comparing D.W.S. screw jacks with a future hydraulic system. | 22th Jun 1935 | Box 139 \ 2 scan0292 | |
| Letter from Dunlop Rubber Co. regarding the design and cost of a new type of jack for Bentley chasses. | 24th Jun 1935 | Box 139 \ 2 scan0293 | |
| Letter from Dunlop Rubber Co. Ltd. concerning added production costs and a previously sent sample. | 20th Jun 1935 | Box 139 \ 2 scan0294 | |
| Letter to The Dunlop Rubber Co. Ltd. requesting the construction of two prototype jacks for a Bentley Chassis. | 27th Jun 1935 | Box 139 \ 2 scan0295 | |
| Letter from S. Smith & Sons to Rolls-Royce chasing the return of flexes and brackets for their annual stock-taking. | 28th Jun 1935 | Box 139 \ 2 scan0296 | |
| Letter to The British Tool & Engineering Co. Ltd. discussing arrangements for fitting a Stevenson Jacking System for a Bentley. | 4th Jul 1935 | Box 139 \ 2 scan0297 | |
| Letter from S. Smith & Sons confirming a phone conversation about modifying a 25 HP car with the latest Jackall system. | 5th Jul 1935 | Box 139 \ 2 scan0298 | |
| Letter from British Tool & Engineering Co. Ltd. regarding the Stevenson Jacking System for a Bentley Car. | 5th Jul 1935 | Box 139 \ 2 scan0299 | |
| Letter to S. Smith & Sons regarding a delay in communication and the return of a defective Jack Bracket. | 6th Jul 1935 | Box 139 \ 2 scan0300 | |
| Failed aluminium jack bracket to be returned to Smith & Sons for inspection. | 8th Jul 1935 | Box 139 \ 2 scan0301 | |
| Telex message confirming the arrival time of a twenty-five horsepower car. | 9th Jul 1935 | Box 139 \ 2 scan0302 | |
| Request to S. Smith & Son for a mechanic to inspect a faulty Jackall system on vehicle 21-G-IV. | 15th Jul 1935 | Box 139 \ 2 scan0303 | |
| Letter from S. Smith & Sons concerning the installation of 'Jackalls' and a new control box on a 25 HP car. | 15th Jul 1935 | Box 139 \ 2 scan0304 | |
| Letter from S. Smith & Sons discussing the materials, weight, and cost for jack feet and Bentley brackets. | 15th Jul 1935 | Box 139 \ 2 scan0305 | |
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