| Description | Date | Identifier | |
| Letter from S. Smith & Sons to W.A. Robotham regarding heaters and instruments. | 9th Jun 1939 | Box 148 \ 2 scan0193 | |
| Letter from S. Smith & Sons to W.A. Robotham regarding a proposal for a cheaper set of instruments. | 9th Jun 1939 | Box 148 \ 2 scan0194 | |
| Letter from S. Smith & Sons regarding their inability to manufacture a special type of heater due to existing commitments. | 9th Jun 1939 | Box 148 \ 2 scan0195 | |
| Letter from S. Smith & Sons regarding a patent for a Remote Control design. | 9th Jun 1939 | Box 148 \ 2 scan0196 | |
| Request for a list of drawing numbers for the B-V front suspension to collect parts for examination and photography. | 12th Jun 1939 | Box 148 \ 2 scan0197 | |
| Letter to Messrs. S. Smith & Sons (Motor Accessories) Ltd. regarding goodwill during difficult times. | 14th Jun 1939 | Box 148 \ 2 scan0198 | |
| Manufacturing cost comparison for the front suspension of the Bentley V and Wraith models. | 14th Jun 1939 | Box 148 \ 2 scan0199 | |
| Material cost of the B.V. front suspension and potential cost reductions. | 15th Jun 1939 | Box 148 \ 2 scan0200 | |
| List of proposed modifications to vehicle components and associated cost reductions. | 15th Jun 1939 | Box 148 \ 2 scan0201 | |
| Potential cost savings for the front suspension section through material analysis and design modifications. | 15th Jun 1939 | Box 148 \ 2 scan0202 | |
| Parts list for the Bentley V front suspension, detailing components with their respective part numbers and weights. | 15th Jun 1939 | Box 148 \ 2 scan0203 | |
| Parts list and weight breakdown for the Bentley V front suspension roll bar and fittings. | 1st Mar 1939 | Box 148 \ 2 scan0204 | |
| Photograph showing the disassembled components of a Bentley V front suspension system. | 1st Mar 1939 | Box 148 \ 2 scan0205 | |
| Parts list with weights for the Bentley V Front Suspension. | 1st Mar 1939 | Box 148 \ 2 scan0206 | |
| Parts list with weights for the Bentley V front suspension hub. | 1st Mar 1939 | Box 148 \ 2 scan0207 | |
| Parts and weights list for the Bentley V front suspension dampers. | 1st Mar 1939 | Box 148 \ 2 scan0208 | |
| Parts list with weights for the Bentley V front suspension. | 1st Mar 1939 | Box 148 \ 2 scan0209 | |
| Photograph showing the disassembled components of a Bentley V front suspension system, laid out and numbered. | 1st Mar 1939 | Box 148 \ 2 scan0210 | |
| Issuing a final list for rationalised chassis, names, and short specifications. | 15th Jun 1939 | Box 148 \ 2 scan0211 | |
| Letter to S. Smith & Sons regarding the graduation of gauges in litres. | 16th Jun 1939 | Box 148 \ 2 scan0212 | |
| Letter from Nichols about the special graduation of gauges in litres and associated extra costs. | 16th Jun 1939 | Box 148 \ 2 scan0213 | |
| Tax and insurance implications for projected engines, comparing a 4-cylinder unit with the Ripple engine. | 15th Jun 1939 | Box 148 \ 2 scan0214 | |
| Table of engine capacities, horsepower ratings, and corresponding tax calculations. | 14th Jun 1939 | Box 148 \ 2 scan0215 | |
| Specification table for various rationalised chassis and model names. | 17th Jun 1939 | Box 148 \ 2 scan0216 | |
| Cost analysis and estimations for a Merlin crankshaft with integral balance weights. | 17th Jun 1939 | Box 148 \ 2 scan0217 | |
| List of possible cost-saving measures for the manufacturing of different crankshafts, with a final cost for a standard V.C.M. Wraith crankshaft. | 17th Jun 1939 | Box 148 \ 2 scan0218 | |
| Schedule and specifications of cars being sent to France for testing. | 27th Jun 1939 | Box 148 \ 2 scan0219 | |
| Priority of sending either the Silver Ripple or Silver Phantom car to France for sales purposes. | 27th Jun 1939 | Box 148 \ 2 scan0220 | |
| Concerns over indefinite expenses for an experimental chassis and a proposal for a project development sheet. | 10th Jul 1939 | Box 148 \ 2 scan0221 | |
| Study of power loss with detonation, analyzing the effects of spark advance, spark plugs, fuel additives, and compression ratios on preignition. | 1st Apr 1939 | Box 148 \ 2 scan0222 | |
| Proposed semi-floating rear axle design for cost reduction. | 21th Jul 1939 | Box 148 \ 2 scan0223 | |
| Cost and reasons for experimental scrap parts due to chassis design changes. | 2nd Aug 1939 | Box 148 \ 2 scan0224 | |
| Purchase of new development equipment for the Experimental Department. | 1st Aug 1939 | Box 148 \ 2 scan0225 | |
| Cost breakdown for various test rigs. | 8th Aug 1939 | Box 148 \ 2 scan0226 | |
| Priced list of various test rigs, motors, and measuring equipment. | 8th Aug 1939 | Box 148 \ 2 scan0227 | |
| Confidential memo discussing the introduction of new chassis types, including an 8-cylinder Bentley and the Silver Phantom. | 8th Aug 1939 | Box 148 \ 2 scan0228 | |
| Request for costing on two prints related to inlet and outlet water connections. | 15th Aug 1939 | Box 148 \ 2 scan0229 | |
| 'Junior Rationalised Programme' and an analysis of competitor vehicles. | 16th Aug 1939 | Box 148 \ 2 scan0230 | |
| Comparison of Jaguar and Vauxhall performance to inform specifications for a proposed 1.78 litre car, codenamed 'Myth'. | 16th Aug 1939 | Box 148 \ 2 scan0231 | |
| Scheduling a conference to discuss advance estimates and routines for the Rationalised Chassis Programme. | 17th Aug 1939 | Box 148 \ 2 scan0232 | |
| Choice of fittings for Bentley V shock damper pipes, recommending 'Olives' over conical unions. | 21th Aug 1939 | Box 148 \ 2 scan0233 | |
| The cost of 'Ripple' material, with recommendations for incorporating cost-saving features. | 24th Aug 1939 | Box 148 \ 2 scan0234 | |
| Technical note on the cost-effectiveness of an aluminium bonnet, and the reliability of specific valves and an L.5 crankcase. | 24th Aug 1939 | Box 148 \ 2 scan0235 | |
| Design philosophy for the Junior Rationalised Programme, focusing on lightweight design and manoeuvrability. | 24th Aug 1939 | Box 148 \ 2 scan0236 | |
| Attached times for a Semi-Floating Axle, Gearbox, and Wraith Radiator components. | 1st Sep 1939 | Box 148 \ 2 scan0237 | |
| List of parts with quantities and time allocations in hours and minutes. | 1st Sep 1939 | Box 148 \ 2 scan0238 | |
| List of operations for Radiator & Fittings and Bonnet, detailing piece numbers, quantities and time. | 1st Sep 1939 | Box 148 \ 2 scan0239 | |
| List of Operations for Gearbox components, detailing parts, quantities, and labor times. | 1st Sep 1939 | Box 148 \ 2 scan0240 | |
| Continued list of gearbox parts with piece numbers, quantities, and estimated times. | 1st Sep 1939 | Box 148 \ 2 scan0241 | |
| Continued list of parts for a gearbox, detailing piece numbers, descriptions, quantities, and time estimates. | 1st Sep 1939 | Box 148 \ 2 scan0242 | |
| Parts list and bonus times schedule for a semi-floating axle assembly. | 1st Sep 1939 | Box 148 \ 2 scan0243 | |
| Parts list for a rear axle assembly, including quantities and machine tooling details. | 1st Sep 1939 | Box 148 \ 2 scan0244 | |
| Parts list for Section 1.A. Rear Axle, detailing present and special tooling costs. | 18th Sep 1939 | Box 148 \ 2 scan0245 | |
| Post-war projects and future engine production forecasts. | 18th Sep 1939 | Box 148 \ 2 scan0246 | |
| Strategic memorandum outlining challenges and plans for post-war production and business diversification. | 18th Sep 1939 | Box 148 \ 2 scan0247 | |
| Suggestions for new projects, including a rationalised car range, a commercial lorry, and manufacturing tractors under license. | 18th Sep 1939 | Box 148 \ 2 scan0248 | |
| Proposal for the development of a small quantity production car and marine units, considering pre-war progress and post-war production strategies. | 18th Sep 1939 | Box 148 \ 2 scan0249 | |
| Development of diesel engines, commercial aviation engines, and auxiliary power plants for aircraft. | 18th Sep 1939 | Box 148 \ 2 scan0250 | |
| Potential wartime and post-war applications for an 8-cylinder engine. | 26th Sep 1939 | Box 148 \ 2 scan0251 | |
| Proprietary engines in lorries and potential post-war use in boats. | 26th Sep 1939 | Box 148 \ 2 scan0252 | |
| Secret memo regarding the rationalized chassis program, model wheelbases, and development of senior and junior range cars. | 6th Oct 1939 | Box 148 \ 2 scan0253 | |
| Chassis programme table detailing specifications for the senior range of cars, including wheelbase, engine details, and coachwork options. | 1st Sep 1939 | Box 148 \ 2 scan0254 | |
| Chassis programme specification table for the Junior Range of 'Myth' model cars. | 1st Sep 1939 | Box 148 \ 2 scan0255 | |
| Specification table for the final rationalised chassis range of various car models. | 25th Oct 1939 | Box 148 \ 2 scan0256 | |
| Secret internal memorandum outlining a war-time programme for car work and model completion. | 25th Oct 1939 | Box 148 \ 2 scan0257 | |
| Car development plans for a 4-cylinder 'Rippletto', coachwork, and a junior semi-monocoque model 'Myth'. | 25th Oct 1939 | Box 148 \ 2 scan0258 | |
| Experimental engine programme and the rationalisation of production tools. | 25th Oct 1939 | Box 148 \ 2 scan0259 | |
| Outlining a list of fitting, assembly, and development work required in the immediate future. | 6th Nov 1939 | Box 148 \ 2 scan0260 | |
| List of engine development and test bed work tasks. | 6th Nov 1939 | Box 148 \ 2 scan0261 | |
| Proposal to devise a nomenclature system for chassis units as part of the rationalised car programme. | 6th Dec 1939 | Box 148 \ 2 scan0262 | |
| Classified list of standardised engines, gearboxes, and axles for the Rationalised Programme. | 6th Dec 1939 | Box 148 \ 2 scan0263 | |
| Specification sheet detailing dimensions and types of various components for Senior and Junior car models. | 6th Dec 1939 | Box 148 \ 2 scan0264 | |
| Specification list comparing 'Senior' and 'Junior' model components for wheels, brakes, prop-shafts, pedals and springs. | 6th Dec 1939 | Box 148 \ 2 scan0265 | |
| Proposal for a standardized naming system for car components under the 'Rationalised Car Programme'. | 8th Dec 1939 | Box 148 \ 2 scan0266 | |
| Proposal for a standardised nomenclature and numbering system for specifying different units and their modifications. | 8th Dec 1939 | Box 148 \ 2 scan0267 | |
| Minutes of a conference discussing body quantity production and costs for the Senior Range. | 22th Dec 1939 | Box 148 \ 2 scan0268 | |
| Cost analysis note detailing material, labour, and tooling costs for car body shells and wings. | 22th Dec 1939 | Box 148 \ 2 scan0269 | |
| Cost analysis document detailing potential savings on various car components. | 22th Dec 1939 | Box 148 \ 2 scan0270 | |
| Cost analysis and breakdown for car body production, including a comparison with competitors. | 22th Dec 1939 | Box 148 \ 2 scan0271 | |
| Meeting notes detailing future procedures and agreements for car body production, supply, and specifications. | 22th Dec 1939 | Box 148 \ 2 scan0272 | |
| Typed document outlining agreements on production methods, components, output rates, and costs. | 22th Dec 1939 | Box 148 \ 2 scan0273 | |
| Potential cost savings and design changes for the B.60 Rocker cover. | 27th Nov 1939 | Box 148 \ 2 scan0274 | |
| Comparative cost estimate for two change gear schemes. | 10th Jan 1940 | Box 148 \ 2 scan0275 | |
| Requesting comparative costs for two different left-hand gearchange schemes. | 10th Jan 1940 | Box 148 \ 2 scan0276 | |
| To JRD regarding a request for cost estimates from McLoughlin for current designs. | 11th Jan 1940 | Box 148 \ 2 scan0277 | |
| To Mr. Vickers at the Foundry regarding drawings for the B.40 3.500 bore cylinder crankcase and cylinders (RE.112). | 11th Jan 1940 | Box 148 \ 2 scan0278 | |
| Re-organisation of personnel responsibilities for experimental chassis work. | 22th Jan 1940 | Box 148 \ 2 scan0279 | |
| Need for more capacity and negotiations to acquire space for a chassis assembly department. | 24th Jan 1940 | Box 148 \ 2 scan0280 | |
| Cost comparison for two different types of valve springs. | 24th Jan 1940 | Box 148 \ 2 scan0281 | |
| Cost analysis for PL.97. | 24th Jan 1940 | Box 148 \ 2 scan0282 | |
| Arranging a meeting to discuss proposals for the location of the Experimental Chassis Division during the War. | 25th Jan 1940 | Box 148 \ 2 scan0283 | |
| Clarifying the supervisory control over cooling systems during wartime. | 3rd Feb 1940 | Box 148 \ 2 scan0284 | |
| Letter from Park Ward & Co. Ltd. regarding a potential information leak about a future 10 HP car programme. | 7th Feb 1941 | Box 148 \ 2 scan0285 | |
| Quotation from Salisbury Axle Company to Rolls-Royce for 500 Model 23-1 rear axles. | 1st Mar 1940 | Box 148 \ 2 scan0286 | |
| Cost file note detailing the specifications and price for a Sunbeam car. | 7th Mar 1940 | Box 148 \ 2 scan0287 | |
| From 'Rm.' to 'HPS.' establishing a reasonable price for an engine unit for Rotols. | 7th Mar 1940 | Box 148 \ 2 scan0288 | |
| Confirming the transfer and sale of a 25/30 HP slave engine, B.II No.4, to Rotol. | 13th Mar 1940 | Box 148 \ 2 scan0289 | |
| Updated prints for the Rationalised Chassis Programme. | 19th Mar 1940 | Box 148 \ 2 scan0290 | |
| Urgent memo regarding parts for the chassis programme, including 6-cylinder engines and new gearboxes. | 27th Mar 1940 | Box 148 \ 2 scan0291 | |
| Status update document for various chassis components, detailing part numbers and their corresponding project references and dates. | 27th Mar 1940 | Box 148 \ 2 scan0292 | |
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