| Description | Date | Identifier | |
| Meeting notes discussing vehicle component development, experimental results, and design progress on the Wraith model. | 21th Dec 1934 | Box 30 \ 1 Scan087 | |
| Minutes of a meeting regarding modifications to the Bentley chassis, including axle control and brakes. | 2nd Jan 1935 | Box 30 \ 1 Scan088 | |
| Meeting notes from January 1935 regarding chassis development for the 'Spectre' model. | 15th Jan 1935 | Box 30 \ 1 Scan089 | |
| Meeting notes discussing the Spectre project and experimental Bentley car developments, including performance, engine, and radiator modifications. | 17th Jan 1935 | Box 30 \ 1 Scan090 | |
| Notes of a meeting discussing vehicle engineering topics including engines, tappets, lamps, and brakes. | 17th Jan 1935 | Box 30 \ 1 Scan091 | |
| Meeting notes discussing modifications and tests on swinging arms, brakes, dampers, and engine components for various car models. | 17th Jan 1935 | Box 30 \ 1 Scan092 | |
| Meeting notes discussing design work, component testing, and performance issues for Wraith, Spectre, and 20/25 models. | 17th Jan 1935 | Box 30 \ 1 Scan093 | |
| Notes of a meeting concerning a Dubonnet Suspension report and the fitting of a Wilson Gearbox. | 17th Jan 1935 | Box 30 \ 1 Scan094 | |
| Notes of a meeting held at Derby discussing the Spectre chassis and springing difficulties. | 17th Jan 1935 | Box 30 \ 1 Scan095 | |
| Notes of a meeting discussing the progress on the Spectre project and development work for Bentley experimental cars. | 17th Jan 1935 | Box 30 \ 1 Scan096 | |
| Meeting notes discussing potential improvements and issues for Graham and Bentley models. | 17th Jan 1935 | Box 30 \ 1 Scan097 | |
| Notes from a meeting discussing modifications to servos, brakes, Bentley car features, and 20/25 HP engine performance. | 17th Jan 1935 | Box 30 \ 1 Scan098 | |
| Notes from a meeting discussing development progress on axle casings, engines, and addressing issues with clutches, brakes, and steering. | 17th Jan 1935 | Box 30 \ 1 Scan099 | |
| Meeting notes discussing suspension, gearbox, and a lower axle ratio modification. | 17th Jan 1935 | Box 30 \ 1 Scan100 | |
| Secret memo arranging a conference to review progress on the Spectre Chassis and Wraith Engine. | 30th Jan 1935 | Box 30 \ 1 Scan101 | |
| Rescheduling a conference regarding the Spectre Chassis and Wraith Engine. | 30th Jan 1935 | Box 30 \ 1 Scan102 | |
| Notes from a conference on the Spectre project discussing outstanding design and experimental items. | 31th Jan 1935 | Box 30 \ 1 Scan103 | |
| Meeting notes discussing the progress and priority of the Spectre, Wraith, and Merlin projects. | 11th Feb 1935 | Box 30 \ 1 Scan104 | |
| Meeting notes from a conference discussing the 'Spectre' project and related design issues. | 31th Jan 1935 | Box 30 \ 1 Scan105 | |
| Meeting notes discussing production priorities and scheduling for the Spectre, Wraith, and Merlin projects. | 1st Jan 1935 | Box 30 \ 1 Scan106 | |
| Notes from a conference on the Spectre model, reviewing the status of six important development items. | 11th Feb 1935 | Box 30 \ 1 Scan107 | |
| Meeting minutes discussing independent front wheel suspension, engine performance, and bodywork for the Spectre and Phantom models. | 11th Feb 1935 | Box 30 \ 1 Scan108 | |
| The use of sound-deadening materials in American cars and a comparative test with a Bentley. | 11th Feb 1935 | Box 30 \ 1 Scan109 | |
| Meeting notes concerning the 'Spectre' chassis, its independent suspension difficulties, and the progress of experimental chassis. | 14th Feb 1935 | Box 30 \ 1 Scan110 | |
| Meeting notes discussing the Spectre, Phantom, and Bentley models, including chassis orders and technical modifications. | 16th Feb 1935 | Box 30 \ 1 Scan111 | |
| Meeting notes discussing vehicle component development and testing, including ignition, supercharging, and brakes. | 16th Feb 1935 | Box 30 \ 1 Scan112 | |
| Meeting notes discussing vehicle component standardisation, trial results, and design issues on various car models. | 6th Feb 1935 | Box 30 \ 1 Scan113 | |
| Meeting notes discussing potential improvements to the clutch, engine performance, gearbox, and suspension. | 16th Feb 1935 | Box 30 \ 1 Scan114 | |
| Meeting notes discussing improvements to car fuses to prevent black-outs and future designs. | 16th Feb 1935 | Box 30 \ 1 Scan115 | |
| Notes from a conference regarding the Spectre project and modifications to the 20/25 carburettor. | 18th Feb 1935 | Box 30 \ 1 Scan116 | |
| Meeting notes discussing braking gear, independent front wheel suspension, and frames. | 18th Feb 1935 | Box 30 \ 1 Scan117 | |
| Meeting notes discussing comparative costs and technical issues for the Spectre and Phantom models. | 18th Feb 1935 | Box 30 \ 1 Scan118 | |
| Meeting notes on design improvements and production plans for various vehicle components. | 18th Feb 1935 | Box 30 \ 1 Scan119 | |
| Decentralisation of experimental units and the allocation of specialists. | 18th Feb 1935 | Box 30 \ 1 Scan120 | |
| Meeting notes from a conference on the Spectre project, discussing component modifications and status. | 18th Feb 1935 | Box 30 \ 1 Scan121 | |
| Meeting notes on braking gear, independent suspension, and frame production. | 18th Feb 1935 | Box 30 \ 1 Scan122 | |
| Meeting minutes discussing comparative costs and various engineering points for the Spectre, Phantom, and Cadillac models. | 18th Feb 1935 | Box 30 \ 1 Scan123 | |
| Meeting notes discussing improvements to steering wheel controls, drain cock, dynamo, oil system, and gears. | 16th Feb 1935 | Box 30 \ 1 Scan124 | |
| De-centralisation of experimental units and the involvement of specialists. | 18th Feb 1935 | Box 30 \ 1 Scan125 | |
| First-time fitting of centrally mounted wings and radiator to a Bentley. | 21th Feb 1935 | Box 30 \ 1 Scan126 | |
| Meeting notes concerning the Spectre and Merlin models, covering chassis, parts timelines, and comparative costs. | 25th Feb 1935 | Box 30 \ 1 Scan127 | |
| Technical report detailing progress on various automotive components such as tappets, dynamo, and oil system. | 27th Feb 1935 | Box 30 \ 1 Scan128 | |
| Notes of a conference on Merlin & Spectre engine development, focusing on construction methods. | 4th Mar 1935 | Box 30 \ 1 Scan129 | |
| Progress report on the Spectre model's chassis, suspension, ground clearance, carburettors, and gearbox. | 7th Mar 1935 | Box 30 \ 1 Scan130 | |
| Clutch issues, referencing Buick clutches and considering outsourcing to specialist firm Borg & Beck. | 7th Mar 1936 | Box 30 \ 1 Scan131 | |
| Listing topics and information requests regarding Bentley and other car models for an upcoming visit. | 9th Mar 1935 | Box 30 \ 1 Scan132 | |
| Lower axle ratio for the 20/25 model. | 9th Mar 1935 | Box 30 \ 1 Scan133 | |
| From a conference on car work, detailing progress on experimental car 5-B-IV and brake complaints. | 11th Mar 1935 | Box 30 \ 1 Scan134 | |
| The development and testing of new vehicle components including water excluders, gear levers, and axles. | 11th Mar 1935 | Box 30 \ 1 Scan135 | |
| Report discussing the worst features on Bentley cars, specifically fading brakes and increased weight. | 11th Mar 1935 | Box 30 \ 1 Scan136 | |
| Potential improvements for the 20/25 HP model, concerning the clutch, performance, and rear axle ratio. | 11th Mar 1935 | Box 30 \ 1 Scan137 | |
| Meeting notes from Derby regarding progress on the Spectre chassis, clutches, and comparative costs. | 14th Mar 1935 | Box 30 \ 1 Scan138 | |
| Meeting notes discussing various technical issues and progress on Phantom and Bentley models. | 15th Mar 1935 | Box 30 \ 1 Scan139 | |
| Meeting notes discussing various Bentley car issues including performance, brakes, and steering. | 15th Mar 1935 | Box 30 \ 1 Scan140 | |
| Notes of a meeting discussing modifications to gear ratios, engine performance, and gearboxes for various models. | 15th Mar 1935 | Box 30 \ 1 Scan141 | |
| Secret memo from 'Wor' to 'Hs' arranging a meeting to discuss the 'Spectre' memo. | 25th Mar 1935 | Box 30 \ 1 Scan142 | |
| Notes from a conference on the Spectre project, covering ground clearance, wheel sizes, suspension and engine design. | 25th Mar 1935 | Box 30 \ 1 Scan143 | |
| Meeting notes discussing Stromberg carburettors, Spectre frame design, endurance testing, and gearbox comparisons with Cadillac. | 27th May 1935 | Box 30 \ 1 Scan144 | |
| Improvements and developments for brakes, cooling systems, chassis weights, timing gear, and shock absorbers. | 27th Mar 1935 | Box 30 \ 1 Scan145 | |
| Notes of a conference on the Spectre model, discussing ground clearance, wheel sizes, suspension, and the engine unit. | 27th Mar 1935 | Box 30 \ 1 Scan146 | |
| The development of the Spectre model, including carburetter, frame sides, and gearbox design. | 27th Mar 1935 | Box 30 \ 1 Scan147 | |
| Improvements and observations related to brakes, cooling, chassis weight, timing chain, and shock absorbers. | 27th Mar 1935 | Box 30 \ 1 Scan148 | |
| Notes from a meeting held at Derby discussing the latest position on various car models and their features. | 14th Mar 1935 | Box 30 \ 1 Scan149 | |
| Progress report on the Spectre model, discussing design considerations for the exhaust and suspension systems. | 11th Apr 1935 | Box 30 \ 1 Scan150 | |
| Progress report on design features for the Spectre model, including the gearbox, steering, engine mounting, and carburation. | 11th Apr 1935 | Box 30 \ 1 Scan151 | |
| Progress report on engine and chassis component development, including camshafts, pistons, and brakes. | 11th Apr 1935 | Box 30 \ 1 Scan152 | |
| Progress report on experimental results for rear axle, tappets, power unit, frame, and dashboard components. | 11th Apr 1935 | Box 30 \ 1 Scan153 | |
| Providing updates on the Spectre, Phantom, and Bentley models, including noise insulation, fan tests, and supercharging. | 11th Apr 1935 | Box 30 \ 1 Scan154 | |
| Progress report on the testing and development of axle control, water excluders, brakes, and levers. | 11th Apr 1935 | Box 30 \ 1 Scan155 | |
| Performance modifications, weight reduction, and steering improvements for various car models. | 11th Apr 1935 | Box 30 \ 1 Scan156 | |
| Recommendations for the 20/25 HP Brakes, Steering, Back Axle, and Gearbox. | 12th Apr 1935 | Box 30 \ 1 Scan157 | |
| Proposed improvements for the 20/25 model, focusing on braking, steering, and the back axle. | 12th Apr 1935 | Box 30 \ 1 Scan158 | |
| Axle gearing options for the 25-HP chassis and a note on a gearbox anti-rattling device. | 12th Apr 1935 | Box 30 \ 1 Scan159 | |
| Arranging for 'Cx' to attend a chassis conference in Derby. | 15th Apr 1935 | Box 30 \ 1 Scan160 | |
| Notes of a meeting held at Derby discussing the Spectre model, chassis, and competition from American cars. | 16th Apr 1935 | Box 30 \ 1 Scan161 | |
| Meeting notes discussing car development, component testing, and issues with Bentley and Phantom models. | 18th Apr 1935 | Box 30 \ 1 Scan162 | |
| Notes of a meeting discussing potential modifications and issues with a Bentley model, covering engine boring, brakes, gearbox, and piston seizures. | 18th Apr 1935 | Box 30 \ 1 Scan163 | |
| Notes of a meeting discussing the worst features on Bentley cars, including brakes, steering, and performance. | 18th Apr 1935 | Box 30 \ 1 Scan164 | |
| Notes of a meeting discussing issues and improvements for various car models. | 8th Apr 1935 | Box 30 \ 1 Scan165 | |
| Requesting a correction to the minutes of a meeting. | 26th Apr 1935 | Box 30 \ 1 Scan166 | |
| Requesting details on various car models following a meeting held in Derby. | 16th May 1935 | Box 30 \ 1 Scan167 | |
| Minutes from a meeting held at Derby, listing queries on various engines and aircraft ahead of a forthcoming visit. | 16th May 1935 | Box 30 \ 1 Scan168 | |
| Meeting agenda or minutes discussing various engine projects and components. | 16th May 1935 | Box 30 \ 1 Scan169 | |
| The status, proposed modifications, and component failures for Spectre and Bentley cars. | 20th May 1935 | Box 30 \ 1 Scan170 | |
| Progress report on issues and developments with thick leaf springs, 14-inch drums, fan failures, dynamos, and Bentley engines. | 20th May 1935 | Box 30 \ 1 Scan171 | |
| The fitting of a Spectre-Marles Steering Box and addressing a Change Speed Lever Rattle on car 21-G-IV. | 20th May 1935 | Box 30 \ 1 Scan172 | |
| Meeting notes from Derby discussing the Spectre chassis, its testing in France, and technical issues. | 24th May 1935 | Box 30 \ 1 Scan173 | |
| Meeting memo discussing Spectre body stiffening, chassis production for the Motor Show, and comparative costs with the Phantom. | 24th May 1935 | Box 30 \ 1 Scan174 | |
| Meeting notes discussing test results and design modifications for various Bentley car components. | 24th May 1935 | Box 30 \ 1 Scan175 | |
| Meeting notes on technical updates and issues for Bentley and 20/25 HP models. | 24th May 1935 | Box 30 \ 1 Scan176 | |
| Summary of carburettor troubles and a proposed gearbox alteration for the 20/25 HP model. | 24th May 1935 | Box 30 \ 1 Scan177 | |
| Meeting notes discussing the specification for the first batch of 'Spectre' chassis. | 31th May 1935 | Box 30 \ 1 Scan178 | |
| List of design instructions and modifications for various engine components. | 31th May 1935 | Box 30 \ 1 Scan179 | |
| Design and modification instructions for various engine components, including gears, pumps, and connections. | 30th May 1935 | Box 30 \ 1 Scan180 | |
| List of instructions and status updates for various engine and chassis components. | 30th May 1935 | Box 30 \ 1 Scan181 | |
| List of design and production instructions for various car components. | 31th May 1935 | Box 30 \ 1 Scan182 | |
| Specification sheet detailing instructions for various vehicle components. | 1st May 1935 | Box 30 \ 1 Scan183 | |
| List of instructions and modifications for vehicle components under 'C' section. | 31th May 1935 | Box 30 \ 1 Scan184 | |
| List of instructions and design decisions for various vehicle components. | 31th May 1935 | Box 30 \ 1 Scan185 | |
| Specification sheet for various chassis and electrical components. | 1st May 1935 | Box 30 \ 1 Scan186 | |
| | | | |