| Description | Date | Identifier | |
| Request for a Spectre Fuel Pump casting, and a Filter and Tap, for testing purposes. | 31th Oct 1934 | Box 149 \ 1 scan0071 | |
| Letter to The S.U. Company regarding a large capacity fuel pump casting for Bentley petrol piping. | 14th Nov 1934 | Box 149 \ 1 scan0072 | |
| Letter inquiring about the English agency for 'Romec' petrol pumps. | 19th Nov 1934 | Box 149 \ 1 scan0073 | |
| Modifications to the Spectre Fuel Pump to create a standard pump for multiple car models. | 28th Nov 1934 | Box 149 \ 1 scan0074 | |
| Letter to The S.U. Company Ltd. regarding issues with noisy fuel pumps. | 5th Dec 1934 | Box 149 \ 1 scan0075 | |
| The failure of a 3-B-IV Petrol Pump and the need for investigation. | 31th Dec 1934 | Box 149 \ 1 scan0076 | |
| Letter to Mr. Skinner of The S.U. Company Ltd. proposing a meeting to discuss Fuel Pumps. | 7th Jan 1935 | Box 149 \ 1 scan0077 | |
| Letter to The S.U. Co. Ltd. concerning failures and potential improvements for the Bentley petrol pump. | 8th Jan 1935 | Box 149 \ 1 scan0078 | |
| Page 2 of a letter regarding the responsibility for S.U. Products on a Bentley. | 8th Jan 1935 | Box 149 \ 1 scan0079 | |
| Letter from The S.U. Company regarding a delay in responding to correspondence about pumps. | 9th Jan 1935 | Box 149 \ 1 scan0080 | |
| Anti-corrosion treatment for S.U. fuel pump and carburettor parts. | 11th Jan 1935 | Box 149 \ 1 scan0081 | |
| Request to The S.U. Company Ltd. for new type diaphragms and Bakelite valves for fuel pump comparison. | 14th Jan 1935 | Box 149 \ 1 scan0082 | |
| Letter from The S.U. Company discussing the process and cost of manufacturing pumps. | 14th Jan 1935 | Box 149 \ 1 scan0083 | |
| Letter to The S.U. Company Ltd. regarding a Coil Housing and Armature, and tests on a noisy pump for a Bentley car. | 17th Jan 1935 | Box 149 \ 1 scan0084 | |
| Dispatch memo regarding a hydraulic pump arm being sent to Messrs. Smith & Sons Ltd. | 17th Jan 1935 | Box 149 \ 1 scan0085 | |
| Letter to S.U. Company Ltd. requesting prints and dimensions for fuel pump components for modification purposes. | 18th Jan 1935 | Box 149 \ 1 scan0086 | |
| Letter from The S.U. Company regarding the receipt of a letter and the dispatch of a coil housing and armature. | 16th Jan 1935 | Box 149 \ 1 scan0087 | |
| Letter from The S.U. Company regarding blueprints and pump body specifications. | 21th Jan 1935 | Box 149 \ 1 scan0088 | |
| Letter to The S.U. Company regarding a petrol pump diaphragm and carburettor flooding issues on the Bentley. | 22th Jan 1935 | Box 149 \ 1 scan0089 | |
| Letter from The S.U. Company regarding a leaking diaphragm and a new float chamber design. | 24th Jan 1935 | Box 149 \ 1 scan0090 | |
| Letter to The S.U. Company Ltd. regarding the supply of Diaphragms and Valves for an Aircraft Fuel Pump. | 26th Jan 1935 | Box 149 \ 1 scan0091 | |
| Letter to The S.U. Company Ltd. requesting two Bentley Pump Coils and two rough castings of the coil housing. | 29th Jan 1935 | Box 149 \ 1 scan0092 | |
| Request for drawings to be made for a new pressure pump electrical unit to improve efficiency. | 29th Jan 1935 | Box 149 \ 1 scan0093 | |
| Letter to The S.U. Company Ltd. concerning the receipt and modification of pump components and a Bentley float chamber. | 31th Jan 1935 | Box 149 \ 1 scan0094 | |
| Letter discussing a modification, offering to forward another print or to discuss the matter with Mr. Elliott. | 31th Jan 1935 | Box 149 \ 1 scan0095 | |
| Requesting the machining of two Fuel Pump Coil Housing Castings. | 4th Feb 1935 | Box 149 \ 1 scan0096 | |
| Request to make and finish one Spectre fuel pump casting for test bed purposes with the Spectre engine. | 9th Feb 1935 | Box 149 \ 1 scan0097 | |
| The potential outsourcing of Spectre petrol pump components to S.U's. | 21th Feb 1935 | Box 149 \ 1 scan0098 | |
| The transfer of patterns for a Spectre Fuel Pump Casting to an external supplier. | 22th Feb 1935 | Box 149 \ 1 scan0099 | |
| Requesting an official order to the S.U. Co. for a fuel pump, minus the body casting. | 23th Feb 1935 | Box 149 \ 1 scan0100 | |
| Letter to The S.U. Company Ltd. requesting a price quote for fuel pumps. | 26th Feb 1935 | Box 149 \ 1 scan0101 | |
| Production of stainless steel unions and the difficulties the S.U. Co. have with the material. | 27th Feb 1935 | Box 149 \ 1 scan0102 | |
| Requesting an official order for the completion of a Fuel Pump Body sent to the S.U. Co. | 28th Feb 1935 | Box 149 \ 1 scan0103 | |
| Arranging the despatch of a fuel pump body to the S.U. Company in Birmingham for completion. | 28th Feb 1935 | Box 149 \ 1 scan0104 | |
| Letter to The S.U. Company Ltd. regarding a pump body, aircraft fuel pump pressure, and stainless steel unions. | 28th Feb 1935 | Box 149 \ 1 scan0105 | |
| The rubber mounting of a fuel pump and inclusion of a flexible pipe for the Spectre 3 car. | 8th Mar 1935 | Box 149 \ 1 scan0106 | |
| Isolating a fuel pump from the dashboard with a new rubber mounting for vehicle 5-B-IV. | 12th Mar 1936 | Box 149 \ 1 scan0107 | |
| Payment authorization for an invoice from the S.U. Company for a Dual Pressure Pump Body. | 12th Mar 1935 | Box 149 \ 1 scan0108 | |
| Letter to The S.U. Company Ltd. requesting the supply of two modified electrical pump units. | 14th Mar 1935 | Box 149 \ 1 scan0109 | |
| Authorising payment for an invoice from the S.U. Company for supplying parts for a Dual Pressure Pump Body. | 18th Mar 1935 | Box 149 \ 1 scan0110 | |
| Letter from The S.U. Company regarding supplying a Bentley pump to an agent in Monaco. | 18th Mar 1935 | Box 149 \ 1 scan0111 | |
| Sourcing Petroflex piping, considering a change of supplier from Power Flexible Co. to Gabriel Mfg. Co. for a 50% cost saving. | 18th Mar 1935 | Box 149 \ 1 scan0112 | |
| Letter to T.C. Skinner of The S.U. Company regarding the supply of an S.U. Pump for a Bentley. | 19th Mar 1935 | Box 149 \ 1 scan0113 | |
| Letter to The S.U. Company arranging a meeting in Derby to discuss a modified fuel pump. | 19th Mar 1935 | Box 149 \ 1 scan0114 | |
| Diagram and explanation of the operation of an AC fuel pump. | 20th Mar 1935 | Box 149 \ 1 scan0115 | |
| Letter from The S.U. Company about arranging a service pump for a Rolls-Bentley in Monaco. | 20th Mar 1935 | Box 149 \ 1 scan0116 | |
| Need for more experience with Petroflex piping before standardizing it on other cars. | 22th Mar 1935 | Box 149 \ 1 scan0117 | |
| Confirming the dispatch of a Fuel Pump Body to S.U.Co. in Birmingham for completion. | 2nd Apr 1935 | Box 149 \ 1 scan0118 | |
| Request to issue an official order to the S.U. Co. for the completion of a twin Fuel Pump Unit. | 2nd Apr 1935 | Box 149 \ 1 scan0119 | |
| Letter to The S.U. Company Ltd. concerning the despatch of a large capacity fuel pump body for completion. | 3rd Apr 1935 | Box 149 \ 1 scan0120 | |
| Confirming that all A.C. Petrol Pumps in stores have been scrapped. | 8th Apr 1935 | Box 149 \ 1 scan0121 | |
| Letter to T.C. Skinner of The S.U. Company regarding a large capacity pump body and developments on a new float chamber. | 10th Apr 1935 | Box 149 \ 1 scan0122 | |
| Letter from The S.U. Company apologising for a delayed reply and discussing pump bodies, non-inductively wound coils and float chambers. | 15th Apr 1935 | Box 149 \ 1 scan0123 | |
| Letter to The S.U. Company regarding modifications to a float chamber and fuel pump coils. | 16th Apr 1935 | Box 149 \ 1 scan0124 | |
| Letter from The S.U. Company providing details on the winding and resistance of their coils. | 25th Apr 1935 | Box 149 \ 1 scan0125 | |
| Requesting an alteration to the dashboard bracket to accommodate a fuel pump rubber mounting. | 25th Apr 1935 | Box 149 \ 1 scan0126 | |
| Letter acknowledging receipt of two pump coils for testing and requesting a non-inductively wound coil. | 30th Apr 1935 | Box 149 \ 1 scan0127 | |
| Customer complaints about the petrol feed system on Bentley cars compared to the Autovac system. | 1st May 1935 | Box 149 \ 1 scan0128 | |
| Fitting a new rubber fuel pump mounting with a specific hardness to a list of cars. | 7th May 1935 | Box 149 \ 1 scan0129 | |
| Official order for German Material Diaphragms for Bentley Fuel Pumps. | 9th May 1935 | Box 149 \ 1 scan0130 | |
| Alternative materials for Bentley fuel pump diaphragms and valves, comparing 'German Material' and Bakelite to the standard Horse Gut and brass. | 13th May 1935 | Box 149 \ 1 scan0131 | |
| Petrol feed systems, the incompatibility of the Autovac with certain carburetters, and a new float chamber design. | 13th May 1935 | Box 149 \ 1 scan0132 | |
| Flexible disc for Bentley fuel pumps, requesting a standardisation sheet. | 14th May 1935 | Box 149 \ 1 scan0133 | |
| Letter to the S.U. Company Ltd. regarding carburetter float chambers and other component developments. | 15th May 1935 | Box 149 \ 1 scan0134 | |
| Carburetter flooding issues and the evaluation of alternative petrol feed systems for Spectre and Bentley models. | 15th May 1935 | Box 149 \ 1 scan0135 | |
| Letter from The S.U. Company concerning a delay in dispatching eight remaining diaphragms related to an order. | 25th May 1935 | Box 149 \ 1 scan0136 | |
| Letter from S.U. Company inquiring about a new experimental petrol pipe material to address ongoing issues. | 27th May 1935 | Box 149 \ 1 scan0137 | |
| Letter from The S.U. Company regarding corrosion issues found with a diaphragm material under testing. | 27th May 1935 | Box 149 \ 1 scan0138 | |
| Fitting a rubber mounting to a Spectre Fuel Pump, requiring extra drilling. | 29th May 1935 | Box 149 \ 1 scan0139 | |
| Arranging for samples of flexible petrol piping to be sent for inspection. | 29th May 1935 | Box 149 \ 1 scan0140 | |
| Internal request to order flexible petrol piping for a Bentley and 20/25 HP chassis for testing. | 30th May 1935 | Box 149 \ 1 scan0141 | |
| Letter to The S.U. Company Ltd. regarding a standardisation sheet for G.M. diaphragms. | 3rd Jun 1935 | Box 149 \ 1 scan0142 | |
| Letter to The S.U. Company Limited regarding the production of large capacity pump castings. | 4th Jun 1935 | Box 149 \ 1 scan0143 | |
| Request to fit a fuel pump rubber mounting and a flexible pipe fitting to car Ex.18062. | 5th Jun 1935 | Box 149 \ 1 scan0144 | |
| List of modifications for the Spectre Type Fuel Pump to align with changes made by the S.U. Co. | 7th Jun 1935 | Box 149 \ 1 scan0145 | |
| Letter to The S.U. Company Ltd. regarding German material diaphragms for fuel pumps. | 12th Jun 1935 | Box 149 \ 1 scan0146 | |
| Letter to The S.U. Company Ltd. regarding modifications to large capacity fuel pumps. | 12th Jun 1935 | Box 149 \ 1 scan0147 | |
| Letter from The S.U. Company regarding fuel pump markings and the finish for the Bentley pump. | 13th Jun 1935 | Box 149 \ 1 scan0148 | |
| Requesting an official order for the S.U. Co. to complete a large capacity fuel pump casting. | 18th Jun 1935 | Box 149 \ 1 scan0149 | |
| Letter from The S.U. Company requesting parts for new type pressure pumps as per drawing D.74509.Z. | 18th Jun 1935 | Box 149 \ 1 scan0150 | |
| Letter to The S.U. Company Ltd. regarding parts for a Large Capacity Pump. | 20th Jun 1935 | Box 149 \ 1 scan0151 | |
| Letter from The S.U. Company regarding alterations to a new pump casting, part D.74508. | 25th Jun 1935 | Box 149 \ 1 scan0152 | |
| Requesting the dispatch of parts for the Spectre Fuel Pump to the S.U. Co. | 27th Jun 1935 | Box 149 \ 1 scan0153 | |
| Standardisation sheet for fuel pumps, calling for new diaphragms, non-inductively wound coils, and Bakelite valves. | 27th Jun 1936 | Box 149 \ 1 scan0154 | |
| Failed attempt to fix vapour lock on the Spectre by insulating the filter, leading to the conclusion that the petrol pumps must be moved. | 27th Jun 1935 | Box 149 \ 1 scan0155 | |
| Request to make three flexible petrol pipes for a 20/25 HP model, complete with modified parts. | 27th Aug 1935 | Box 149 \ 1 scan0156 | |
| Letter to The S.U. Company Ltd. concerning missing drawings and measurements for a Large Capacity Pump. | 26th Jun 1935 | Box 149 \ 1 scan0157 | |
| Letter from The S.U. Company regarding drawing alterations for pumps. | 29th Jun 1935 | Box 149 \ 1 scan0158 | |
| Request to issue an official order to the S.U. Co. for the completion of a large capacity fuel pump. | 1st Jul 1935 | Box 149 \ 1 scan0159 | |
| Proposal to simplify manufacturing of Bentley fuel pump unions and plugs by using aluminum washers instead of cork. | 3rd Jul 1935 | Box 149 \ 1 scan0160 | |
| Complaint about filth in flexible petrol tubing from The Power Flexible Co. | 4th Jul 1935 | Box 149 \ 1 scan0161 | |
| Standardisation of new Bentley petrol pump diaphragms and bakelite valves to improve reliability. | 13th May 1935 | Box 149 \ 1 scan0162 | |
| The standardisation of Bentley parts, detailing costs and production implementation. | 9th May 1935 | Box 149 \ 1 scan0163 | |
| Instruction to modify the 2-S-1 fuel pump on 'Spectre II' with a new rubber mounting and flexible piping. | 5th Jul 1935 | Box 149 \ 1 scan0164 | |
| To Roy detailing the work required for the S.U. Co. to complete a Fuel Pump. | 5th Jul 1935 | Box 149 \ 1 scan0165 | |
| Letter to The S.U. Company Ltd. regarding the standardisation and production of Bentley Fuel Pumps. | 11th Jul 1935 | Box 149 \ 1 scan0166 | |
| Request to measure and create a more suitable length of flexible petrol piping for the Spectre chassis. | 16th Jul 1935 | Box 149 \ 1 scan0167 | |
| Letter discussing petrol supply issues at high altitude and a proposed 'bye-pass' system solution. | 19th Jul 1935 | Box 149 \ 1 scan0168 | |
| Petrol supply failures at high altitude and proposing a solution for a customer complaint. | 29th Jul 1935 | Box 149 \ 1 scan0169 | |
| Customer feedback on the efficiency of electric pumps and suggesting an investigation into competitor pumps used by Fiat, Alpha, and Citroen. | 1st Aug 1935 | Box 149 \ 1 scan0170 | |
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