| Description | Date | Identifier | |
| Letter to Messrs. S. Smith & Sons (M.A.) Ltd. confirming the wish to keep a jack and requesting to be charged for it. | 24th Mar 1936 | Box 139 \ 1 scan0102 | |
| Letter from Donald Sessions & Co Ltd regarding the despatch of tubing connections and flexible hose. | 26th Mar 1936 | Box 139 \ 1 scan0103 | |
| Letter to Dunlop Rubber Co. requesting a drawing for a modified three-stage Bentley Jack. | 30th Mar 1936 | Box 139 \ 1 scan0104 | |
| Letter to Messrs. Donald Sessions & Co. Ltd. requesting one set of Ph.III Rams. | 30th Mar 1936 | Box 139 \ 1 scan0105 | |
| Letter from Donald Sessions & Company Ltd. regarding the supply of connections and requesting a sketch for clarification. | 30th Mar 1936 | Box 139 \ 1 scan0106 | |
| Parts list detailing the weight of individual components and the total combined weight. | 31th Mar 1936 | Box 139 \ 1 scan0107 | |
| Letter to a supplier clarifying requirements for junctions and a flex pipe for a hand pump outlay. | 31th Mar 1936 | Box 139 \ 1 scan0108 | |
| Letter from Donald Sessions & Co. Ltd. regarding blueprints and specifications for D.W.S. Hand Operated Hydraulic Jacks for the Phantom III car. | 31th Mar 1936 | Box 139 \ 1 scan0109 | |
| Letter from Donald Sessions & Company regarding a further set of Phantom III Jack Rams. | 31th Mar 1936 | Box 139 \ 1 scan0110 | |
| Necessary modifications to a lifting ring for a jack trap door. | 1st Apr 1936 | Box 139 \ 1 scan0111 | |
| Letter from Dunlop Rubber Co. to Rolls Royce concerning the head size of a new type of triple lift jack. | 4th Apr 1936 | Box 139 \ 1 scan0112 | |
| Letter from Dunlop Rubber Co., Ltd. concerning the drawing for a New Type Triple Lift Jack. | 31th Mar 1936 | Box 139 \ 1 scan0113 | |
| Invoice from S. Smith & Sons for parts ordered without an official purchase order. | 7th Apr 1936 | Box 139 \ 1 scan0114 | |
| Letter to Dunlop Rubber Co. Ltd. requesting figures and specifications for two types of jacks. | 7th Apr 1936 | Box 139 \ 1 scan0115 | |
| Requesting an official order be placed with S. Smith & Sons Ltd. for a Jack, Sleeves, and Pipe Nuts after they were tested. | 8th Apr 1936 | Box 139 \ 1 scan0116 | |
| Letter from Dunlop Rubber Co. Ltd. discussing a new type of jack design and seeking an opinion on an enclosed blueprint. | 22th Apr 1936 | Box 139 \ 1 scan0117 | |
| Cross-section drawing of a Top Bevel T.L. Jack with lift measurements. | 21th Apr 1936 | Box 139 \ 1 scan0118 | |
| Issues and proposed improvements for the Ph.III hydraulic jack system. | 22th Apr 1936 | Box 139 \ 1 scan0119 | |
| Letter to a customer in France requesting feedback on the Easy Jacking System for chassis B-56-BN. | 23th Apr 1936 | Box 139 \ 1 scan0120 | |
| Letter to Dunlop Rubber Co. Ltd. regarding the unsuitability of a supplied jack. | 24th Apr 1936 | Box 139 \ 1 scan0121 | |
| Letter regarding a discrepancy in the design of hand hydraulic jacks for the Phantom III chassis. | 24th Apr 1936 | Box 139 \ 1 scan0122 | |
| The substitution of hydraulic fluid for Ph.III Sessions Hydraulic Jacks. | 24th Apr 1936 | Box 139 \ 1 scan0123 | |
| Issues and potential modifications for the Phantom III hydraulic jacks. | 25th Apr 1936 | Box 139 \ 1 scan0124 | |
| Issues and solutions for the Phantom III hydraulic jacking system. | 25th Apr 1936 | Box 139 \ 1 scan0125 | |
| Anticipated problems with the Phantom III hydraulic jacking system, proposing a mechanical alternative. | 28th Apr 1936 | Box 139 \ 1 scan0126 | |
| Outlining a procedure to find oil leaks in the Phantom III hydraulic jacks. | 30th Apr 1936 | Box 139 \ 1 scan0127 | |
| Confirming instructions to investigate the manufacture of jack couplings at Donald Sessions' Works, Smiths, and Dunlops. | 5th May 1936 | Box 139 \ 1 scan0128 | |
| Request to improve the clarity of directional arrows on the hydraulic jack controls for the Phantom III. | 5th May 1936 | Box 139 \ 1 scan0129 | |
| Telegram concerning the delivery promise for Bentley high lift jacks. | 6th May 1936 | Box 139 \ 1 scan0130 | |
| Querying an invoice for hydraulic jacking systems supplied for experimental cars prior to standardization. | 6th May 1936 | Box 139 \ 1 scan0131 | |
| Letter to Donald Sessions & Co. Ltd. regarding leaking rams on a jacking system, a proposed new rubber gland design, and tests on the Phantom III chassis. | 6th May 1936 | Box 139 \ 1 scan0132 | |
| Letter (sheet 2) requesting a visit to Shelleys to observe the manufacturing process of rams. | 6th May 1936 | Box 139 \ 1 scan0133 | |
| Letter from Dunlop Rubber Co. Ltd. detailing production delays for new type jacks due to manufacturing difficulties. | 6th May 1936 | Box 139 \ 1 scan0134 | |
| Improving the visibility of directional arrows on the hand pump unit for Phantom III Hydraulic Jacks. | 7th May 1936 | Box 139 \ 1 scan0135 | |
| Letter to a supplier requesting design changes for indicating discs on a hand-operated pump. | 7th May 1936 | Box 139 \ 1 scan0136 | |
| Order be placed for D.W.S. Hand Hydraulic Jacking Systems. | 8th May 1936 | Box 139 \ 1 scan0137 | |
| Letter from Borg & Beck Company regarding a conversation about a dummy chassis fitted with hydraulic jacks. | 8th May 1936 | Box 139 \ 1 scan0138 | |
| Letter from Automotive Products Company regarding a delay in completing work on Lockheed Jacks and arranging a meeting about Lockheed Brakes. | 11th May 1936 | Box 139 \ 1 scan0139 | |
| Responding to an instruction about hydraulic jacks, specifically to cover arrow tails with black enamel. | 12th May 1936 | Box 139 \ 1 scan0140 | |
| Letter to Donald Sessions & Co. Ltd. regarding faults with the hand hydraulic jacks on the Phantom III chassis. | 12th May 1936 | Box 139 \ 1 scan0141 | |
| Letter discussing modifications to pump control knobs and the operating instruction pamphlet. | 12th May 1936 | Box 139 \ 1 scan0142 | |
| Letter to a supplier regarding defective hydraulic jacks for the Phantom III chassis. | 18th May 1936 | Box 139 \ 1 scan0143 | |
| Letter to Messrs. Donald Sessions & Co.Ld. inquiring about the cause of leaks in rubber on metal tubes. | 18th May 1936 | Box 139 \ 1 scan0144 | |
| Fitting of new Sessions Hydraulic Jacks to chassis 36-EX. | 19th May 1936 | Box 139 \ 1 scan0145 | |
| Letter to Donald Sessions & Co. Ltd. regarding the design of hand hydraulic jacks for the Phantom III. | 19th May 1936 | Box 139 \ 1 scan0146 | |
| Letter from R. T. Shelley Limited confirming the dispatch of experimental rubber rams and an engine driven annular pump. | 20th May 1936 | Box 139 \ 1 scan0147 | |
| Production difficulties and high scrap rates for D.W.S. jacks for the Phantom III chassis. | 23th May 1936 | Box 139 \ 1 scan0148 | |
| Letter from a supplier regarding delays and technical issues with hydraulic jacks for the Phantom III car. | 25th May 1936 | Box 139 \ 1 scan0149 | |
| Letter from a supplier discussing production issues and solutions for moulded rubber components. | 25th May 1936 | Box 139 \ 1 scan0150 | |
| Letter from solicitors Wragge & Co regarding 'Sessions Jacks'. | 25th May 1936 | Box 139 \ 1 scan0151 | |
| Letter from Lake & Elliot Ltd. regarding the rescheduling of a meeting to discuss special jacks. | 28th May 1936 | Box 139 \ 1 scan0152 | |
| Failures of Phantom III hydraulic jacks during overload tests and a request for modification to allow further pressure testing. | 30th May 1936 | Box 139 \ 1 scan0153 | |
| Letter from Dunlop Rubber Co., Ltd. regarding the availability of new types of jacks for submission. | 30th May 1936 | Box 139 \ 1 scan0154 | |
| Letter to Donald Sessions & Co. Ltd. regarding oil leaks and pressure specifications for Hand Hydraulic Jacks on the Phantom III. | 30th May 1936 | Box 139 \ 1 scan0155 | |
| Letter instructing the production department on car testing procedures to avoid pressure leaks in rams. | 30th May 1936 | Box 139 \ 1 scan0156 | |
| Oil leaks in the D.W.S. jacking system on the Phantom III and the proposed solution. | 30th May 1936 | Box 139 \ 1 scan0157 | |
| Letter to Messrs. Lake & Elliot Ltd. regarding a meeting to discuss mechanical jacks. | 3rd Jun 1936 | Box 139 \ 1 scan0158 | |
| Letter from S. Smith & Sons regarding the testing and cost of a JACKALL system fitted to a Phantom III chassis. | 5th Jun 1936 | Box 139 \ 1 scan0159 | |
| Letter from Dunlop Rubber Co. Ltd. regarding the despatch of new sample jacks for testing. | 6th Jun 1936 | Box 139 \ 1 scan0160 | |
| Correspondence from Lake & Elliot Ltd regarding a postponed meeting to deliver a sample jack. | 10th Jun 1936 | Box 139 \ 1 scan0161 | |
| Letter concerning test results and pressure issues with hydraulic jacks for the Phantom III chassis. | 12th Jun 1936 | Box 139 \ 1 scan0162 | |
| Continued letter regarding tests on port type pumps, relief valves, and pressure capabilities. | 12th Jun 1936 | Box 139 \ 1 scan0163 | |
| Continuation of a letter to Messrs. Donald Sessions & Co. Ltd. suggesting a change from malleable iron to a steel forging for a cap. | 12th Jun 1936 | Box 139 \ 1 scan0164 | |
| Letter to Donald Sessions & Co. Ltd. regarding the failure of two jacks and the return of a hand pump. | 15th Jun 1936 | Box 139 \ 1 scan0165 | |
| Phantom III hydraulic jack pump leakage, comparing pump types and recommending modifications. | 15th Jun 1936 | Box 139 \ 1 scan0166 | |
| Delays in the Bentley jacking system and considering alternative systems from other car manufacturers. | 15th Jun 1936 | Box 139 \ 1 scan0167 | |
| Letter from R. T. Shelley Ltd. regarding the dispatch of two experimental pumps for a D.W.S. Hydraulic Jacking system. | 16th Jun 1936 | Box 139 \ 1 scan0168 | |
| Continuation sheet of a letter discussing a plunger that develops 3000 lbs and its delivery to Derby. | 16th Jun 1936 | Box 139 \ 1 scan0169 | |
| Letter from Donald Sessions & Company Ltd. confirming a previous conversation and letter. | 16th Jun 1936 | Box 139 \ 1 scan0170 | |
| Issues with the Bentley jacking system and proposed improvements. | 17th Jun 1936 | Box 139 \ 1 scan0171 | |
| Page discussing the evaluation of a jacking system on an S.S. Jaguar. | 17th Jun 1936 | Box 139 \ 1 scan0172 | |
| Timeline of key events and dates for the Bentley easy jacking system. | 17th Jun 1936 | Box 139 \ 1 scan0173 | |
| Letter from R.T. Shelley Ltd. regarding the despatch of two experimental pumps for a D.W.S. Hydraulic Jacking System. | 18th Jun 1936 | Box 139 \ 1 scan0174 | |
| Letter from S. Smith & Sons expressing disappointment about the choice of hydraulic jacking system for the Phantom III chassis. | 19th Jun 1936 | Box 139 \ 1 scan0175 | |
| Letter from S. Smith & Sons' Sales Director expressing disappointment about losing a contract despite their system's superior design. | 23th Jun 1936 | Box 139 \ 1 scan0176 | |
| Modification to a sample Dunlop jack for the Bentley Jacking System. | 20th Jun 1936 | Box 139 \ 1 scan0177 | |
| Modifications to the Bentley Jacking System pads. | 23th Jun 1936 | Box 139 \ 1 scan0178 | |
| Tests of various hand pumps for Phantom III hydraulic jacks. | 24th Jun 1936 | Box 139 \ 1 scan0179 | |
| Cover letter to Messrs. R.T. Shelley Ltd. enclosing a copy of another letter addressed to Messrs. Donald Sessions and Co. Ltd. | 24th Jun 1936 | Box 139 \ 1 scan0180 | |
| Letter to a supplier providing feedback and criticism on experimental hand pumps, specifically regarding machining accuracy and piston clearance. | 24th Jun 1936 | Box 139 \ 1 scan0181 | |
| Short typed telegram message arranging a visit to discuss problems. | 25th Jun 1936 | Box 139 \ 1 scan0182 | |
| Returning experimental Ph.III Sessions Hydraulic Jack Pumps for modification. | 25th Jun 1936 | Box 139 \ 1 scan0183 | |
| Letter to S. Smith & Sons regarding the decision not to standardise their Jackall Jacks on the Phantom III. | 26th Jun 1936 | Box 139 \ 1 scan0184 | |
| Letter from Dunlop confirming delivery and manufacturing details for a new type of Double Lift Jack. | 26th Jun 1936 | Box 139 \ 1 scan0185 | |
| Letter from S. Smith & Sons regarding the Jackall system and competitor products for the Phantom III chassis. | 29th Jun 1936 | Box 139 \ 1 scan0186 | |
| Letter from S. Smith & Sons regarding the merits of the Jackall jacking system. | 29th Jun 1936 | Box 139 \ 1 scan0187 | |
| Modifying the Phantom III front jack for use on the Wraith II to address clearance issues. | 30th Jun 1936 | Box 139 \ 1 scan0188 | |
| Notice regarding the identification marking for modified pumps on D.W.S. permanent hydraulic jacks for the Phantom III chassis. | 30th Jun 1936 | Box 139 \ 1 scan0189 | |
| Correspondence to Automotive Products Co. Ltd. about a drawing for the Phantom III chassis and the testing of jacks. | 30th Jun 1936 | Box 139 \ 1 scan0190 | |
| Letter from Automotive Products Company Ltd regarding drawings and components for hydraulic jacks. | 30th Jun 1936 | Box 139 \ 1 scan0191 | |
| Letter from Automotive Products Company Limited listing the weights of various parts. | 30th Jun 1936 | Box 139 \ 1 scan0192 | |
| Letter from R. T. Shelley Limited regarding samples of sleeve nuts with a modified chamfer. | 1st Jul 1936 | Box 139 \ 1 scan0193 | |
| Letter to R.T. Shelley Ltd. asking for clarification on the purpose of recently delivered sleeve nuts. | 2nd Jul 1936 | Box 139 \ 1 scan0194 | |
| Letter from Automotive Products Company Ltd regarding Jack Pump fixings, tank fixings, and the despatch of jacks. | 2nd Jul 1936 | Box 139 \ 1 scan0195 | |
| Letter from R. T. Shelley Limited confirming a meeting with Mr. Grylls. | 3rd Jul 1936 | Box 139 \ 1 scan0196 | |
| Letter to Automotive Products Co. Ltd. concerning the filter and piping for Lockheed Jacks. | 6th Jul 1936 | Box 139 \ 1 scan0197 | |
| Letter from S. Smith & Sons regarding the differing ram diameters on Phantom III jacks and requesting drawings for the jack brackets. | 7th Jul 1936 | Box 139 \ 1 scan0198 | |
| Letter from Automotive Products Company Ltd. regarding the fitting of Lockheed Jacks to an experimental car. | 9th Jul 1936 | Box 139 \ 1 scan0199 | |
| Telegram to Autoducts, Leamington Spa, enquiring about the delivery of a further set of jacks and brackets. | 10th Jul 1936 | Box 139 \ 1 scan0200 | |
| Letter from Automotive Products Company detailing the weights of various parts for a jacking system. | 10th Jul 1936 | Box 139 \ 1 scan0201 | |
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