| Description | Date | Identifier | |
| Return of two Phantom III radiator matrices to John Marston Ltd. for testing. | 8th Oct 1937 | Box 150 \ 3 scan0242 | |
| Dispatch request for a set of parts to make one cover for the starting handle bracket. | 13th Oct 1937 | Box 150 \ 3 scan0243 | |
| Requesting an official order for one Bentley radiator matrix to be sent to John Marston Ltd. | 13th Oct 1937 | Box 150 \ 3 scan0244 | |
| Letter to John Marston Ltd. cancelling an order for a matrix and discussing shutter assemblies. | 13th Oct 1937 | Box 150 \ 3 scan0245 | |
| Visit to John Marston Ltd. regarding the failure, conversion, and testing of oil coolers. | 19th Oct 1937 | Box 150 \ 3 scan0246 | |
| Cooler defects, proposed modifications by Messrs. Marstons, and testing procedures for matrices. | 19th Oct 1937 | Box 150 \ 3 scan0247 | |
| Examination and conclusion on the performance and issues of various radiator matrices, including flow tests and silting. | 19th Oct 1937 | Box 150 \ 3 scan0248 | |
| Heat dissipation test results for Mk VI matrices carried out at John Marstons' plant in Wolverhampton. | 19th Oct 1937 | Box 150 \ 3 scan0249 | |
| Diagram illustrating discrepancies in the fit between a tube end and a cooler casing plate. | 22th Oct 1937 | Box 150 \ 3 scan0250 | |
| Invoice from John Marston Ltd. for a Bentley Radiator. | 22th Oct 1937 | Box 150 \ 3 scan0251 | |
| The cost and feasibility of manufacturing a sample moulded plastic filler cap for an experimental radiator. | 28th Oct 1937 | Box 150 \ 3 scan0252 | |
| Letter from Ellison Insulations acknowledging an enquiry for Moulded Radiator Caps. | 29th Oct 1937 | Box 150 \ 3 scan0253 | |
| Letter from Ellison Insulations Ltd. regarding the production of Radiator Filler Caps in Moulded Tufnol. | 1st Nov 1937 | Box 150 \ 3 scan0254 | |
| Letter to Ellison Insulations Ltd. requesting a quotation for experimental filler caps and a special mould. | 3rd Nov 1937 | Box 150 \ 3 scan0255 | |
| Letter from Ormerods (Coventry) Ltd offering diecasting services for grilled radiator fronts and sides. | 8th Nov 1937 | Box 150 \ 3 scan0256 | |
| Letter to Ormerods Ltd. requesting specimen prices for die-cast radiator grilles for comparison with sheet metal ones. | 11th Nov 1937 | Box 150 \ 3 scan0257 | |
| Letter to John Marston Ltd. regarding a modified drawing and the status of Bentley dummy shutter sets. | 11th Nov 1937 | Box 150 \ 3 scan0258 | |
| Letter requesting information and following up on a defective Bentley matrix. | 27th Jul 1937 | Box 150 \ 3 scan0259 | |
| Letter to John Mardon Ltd. regarding an oversized radiator matrix and clarification of dimensional limits. | 12th Nov 1937 | Box 150 \ 3 scan0260 | |
| Letter requesting figures from matrices to update a drawing, with a reminder for figures for a Bentley matrix. | 12th Nov 1937 | Box 150 \ 3 scan0261 | |
| Quotation for the supply of Swan Brand Tufnol Moulded Radiator Caps. | 13th Nov 1937 | Box 150 \ 3 scan0262 | |
| Internal memorandum regarding the return of a 'Tufnol' moulded filler plug to a supplier. | 13th Nov 1937 | Box 150 \ 3 scan0263 | |
| Letter to Messrs. Ellison Insulations Ltd. regarding the return of a filler plug. | 13th Nov 1937 | Box 150 \ 3 scan0264 | |
| Letter from Ormerods (Coventry) Limited regarding a visit to show samples of Die Cast Radiator Grilles. | 15th Nov 1937 | Box 150 \ 3 scan0265 | |
| Order for 15 ft. of water connection hose from Leyland and Birmingham Rubber Co. | 18th Nov 1937 | Box 150 \ 3 scan0266 | |
| Price confirmation letter for Bentley and Rolls mascots and radiator grilles from Ormerods (Coventry) Ltd. | 20th Nov 1937 | Box 150 \ 3 scan0267 | |
| Letter confirming a visit to John Marston Ltd. to discuss various components, including shutter sets, oil coolers, and radiator matrices. | 24th Nov 1937 | Box 150 \ 3 scan0268 | |
| Request to remove top and bottom tanks from Chevrolet and Buick radiator units for examination. | 29th Nov 1937 | Box 150 \ 3 scan0269 | |
| Letter requesting quotations for experimental Bentley radiator matrices from John Marston Ltd. | 1st Dec 1937 | Box 150 \ 3 scan0270 | |
| Letter requesting a quotation for radiator parts and flow specifications for other models. | 1st Dec 1937 | Box 150 \ 3 scan0271 | |
| Quotation from John Marston Limited for radiator matrices for a new Bentley radiator. | 2nd Dec 1937 | Box 150 \ 3 scan0272 | |
| Letter to Messrs. John Marston Ltd. regarding a works visit, radiator costs, and enclosed prints for a car heater and Bentley shutter. | 6th Dec 1937 | Box 150 \ 3 scan0273 | |
| Letter to John Marston Ltd. regarding a scheme for a dummy shutter assembly on a Bentley III and heat dissipation test results for a Phantom III matrix. | 7th Dec 1937 | Box 150 \ 3 scan0274 | |
| Higher cost of rubber connections for M.Series Bentleys, weighing price against efficiency. | 10th Dec 1937 | Box 150 \ 3 scan0275 | |
| Proposed change to the radiator matrix testing procedure with Marston Ltd. to achieve cost savings. | 11th Dec 1937 | Box 150 \ 3 scan0276 | |
| Requesting an estimation of net savings by adopting a new procedure for handling matrices. | 13th Dec 1937 | Box 150 \ 3 scan0277 | |
| Letter of complaint to John Marston Ltd. regarding a defective Bently Dimmy shutter set. | 13th Dec 1937 | Box 150 \ 3 scan0278 | |
| Letter detailing a list of defects found on a supplied shutter set and returning it as unfit for purpose. | 15th Dec 1937 | Box 150 \ 3 scan0279 | |
| Letter discussing the design, manufacture, and costs of radiator stiffeners and shutter sets for a Bentley. | 15th Dec 1937 | Box 150 \ 3 scan0280 | |
| Letter requesting a cost analysis for a radiator compared to a competitor's, and the results of a dissipation test on a reconditioned matrix. | 15th Dec 1937 | Box 150 \ 3 scan0281 | |
| Letter to a supplier regarding alternative schemes for mounting a Bentley III radiator grille and a quotation for a Wraith petrol tank. | 21th Dec 1937 | Box 150 \ 3 scan0282 | |
| Page two of a letter regarding the grille mounting on a Bentley III radiator. | 24th Dec 1937 | Box 150 \ 3 scan0283 | |
| Letter to The Leyland & Birmingham Rubber Co. Ltd. requesting a quotation for moulded rubber hose water connections. | 24th Dec 1937 | Box 150 \ 3 scan0284 | |
| Letter to Goodrich Ltd requesting a quotation for a moulded rubber hose water connection. | 24th Dec 1937 | Box 150 \ 3 scan0285 | |
| Letter from British Tyre & Rubber Co. Ltd. acknowledging receipt of an enquiry. | 28th Dec 1937 | Box 150 \ 3 scan0286 | |
| The procurement of untested radiator matrices from supplier John Marstons. | 30th Dec 1937 | Box 150 \ 3 scan0287 | |
| Letter from John Marston Limited discussing a Phantom III radiator grille scheme and other components. | 30th Dec 1937 | Box 150 \ 3 scan0288 | |
| Cost savings on radiator matrices by dispensing with pressure testing. | 1st Jan 1938 | Box 150 \ 3 scan0289 | |
| Quotation letter from British Tyre & Rubber Co. Ltd. for two types of rubber hose water connections. | 4th Jan 1938 | Box 150 \ 3 scan0290 | |
| Follow-up letter to John Marston Ltd. regarding defects in a Bentley dummy shutter set. | 5th Jan 1938 | Box 150 \ 3 scan0291 | |
| Official order for Neoprene hose from British Goodrich. | 6th Jan 1938 | Box 150 \ 3 scan0292 | |
| Letter from John Marston Limited regarding the progress on a sample Bentley Shutter set. | 6th Jan 1938 | Box 150 \ 3 scan0293 | |
| Letter responding to critiques of a hand-made shutter assembly and discussing radiator construction and costs. | 16th Dec 1937 | Box 150 \ 3 scan0294 | |
| Page 2 of a letter concerning dissipation figures on a reconditioned matrix. | 16th Dec 1937 | Box 150 \ 3 scan0295 | |
| Letter to John Marston Ltd. regarding the supply and identification of Bentley radiator matrices and radiator shutter sets. | 11th Jan 1938 | Box 150 \ 3 scan0296 | |
| Letter to supplier John Marston Ltd. discussing radiator matrices and related components for various vehicle models. | 11th Jan 1938 | Box 150 \ 3 scan0297 | |
| List of outstanding items detailing part descriptions, reference numbers, and despatch dates. | 29th Nov 1937 | Box 150 \ 3 scan0298 | |
| Quotation from Leyland & Birmingham Rubber Co. for rubber hose connections. | 12th Jan 1938 | Box 150 \ 3 scan0299 | |
| Letter from John Marston Limited concerning the supply, modification, and cost of radiator matrices and related components for various car models. | 13th Jan 1938 | Box 150 \ 3 scan0300 | |
| Letter to The Leyland & Birmingham Rubber Co. Ltd. regarding a quotation for moulded rubber and canvas bends. | 13th Jan 1938 | Box 150 \ 3 scan0301 | |
| Letter to John Marston Ltd. regarding a Bentley III radiator matrix and the production of shutter vanes. | 14th Jan 1938 | Box 150 \ 3 scan0302 | |
| Letter from John Marston Limited enclosing drawing C.251 of Bentley Radiator Vanes. | 14th Jan 1938 | Box 150 \ 3 scan0303 | |
| Quotation from The Leyland & Birmingham Rubber Co. Ltd. for canvas hose connections. | 14th Jan 1938 | Box 150 \ 3 scan0304 | |
| Letter to John Marstons Ltd. concerning modifications to dummy shutters and radiator matrices. | 15th Jan 1937 | Box 150 \ 3 scan0305 | |
| Requesting a cost comparison for different bottom water connection configurations for Wraith production. | 18th Jan 1938 | Box 150 \ 3 scan0306 | |
| Letter to a rubber company inquiring about substituting a bent metal pipe with a moulded rubber bend for an engine. | 18th Jan 1938 | Box 150 \ 3 scan0307 | |
| Page 2 of a letter requesting a supply date and enclosing drawing EB.3661 for Bentley grille stiffeners. | 18th Jan 1938 | Box 150 \ 3 scan0308 | |
| Letter from John Marston Ltd. regarding modifications to Bentley shutter and radiator components. | 18th Jan 1938 | Box 150 \ 3 scan0309 | |
| Letter from John Marston Limited concerning a reconditioned Oil Cooler F.185 and Bentley components. | 21th Jan 1938 | Box 150 \ 3 scan0310 | |
| Letter to John Marston Ltd. confirming a works visit to discuss car heaters, a Wraith radiator matrix, and Bentley dummy shutter sets. | 24th Jan 1938 | Box 150 \ 3 scan0311 | |
| Letter to J. Marston Ltd. outlining points for discussion regarding Bentley II and III radiators and oil coolers. | 24th Jan 1938 | Box 150 \ 3 scan0312 | |
| Letter chasing a reply from The Leyland & Birmingham Rubber Co. regarding a delay to work. | 24th Jan 1938 | Box 150 \ 3 scan0313 | |
| Requesting an official order for a Wraith radiator matrix and associated work from Messrs John Marstons Ltd. | 25th Jan 1938 | Box 150 \ 3 scan0314 | |
| Letter to John Marston Ltd. regarding the cost and supply of oil coolers and car heaters. | 27th Jan 1938 | Box 150 \ 3 scan0315 | |
| Price list for various matrix and dummy shutter set configurations. | 27th Jan 1938 | Box 150 \ 3 scan0316 | |
| Visit to John Marston Ltd. regarding quotations for Bentley II dummy shutter set prices. | 27th Jan 1938 | Box 150 \ 3 scan0317 | |
| Cost analysis and quotation for Wraith and Bentley radiator matrices. | 27th Jan 1938 | Box 150 \ 3 scan0318 | |
| Costs, modifications, and orders for radiator matrices and oil coolers with supplier Messrs. Marstons. | 27th Jan 1938 | Box 150 \ 3 scan0319 | |
| Chassis costs, car heater samples, Bentley shutter sets, and a complaint regarding oil coolers. | 27th Jan 1938 | Box 150 \ 3 scan0320 | |
| Dip soldering of a Wraith bottom tank to a radiator matrix. | 28th Jan 1938 | Box 150 \ 3 scan0321 | |
| Altering radiator matrix side plates to match the matrix width for specific chassis types. | 28th Jan 1938 | Box 150 \ 3 scan0322 | |
| Correcting a pricing error in a report about a visit to John Marston Ltd. | 31th Jan 1938 | Box 150 \ 3 scan0323 | |
| Requesting the provision of two fillers (EXS.349) and one cap (EXS.348). | 1st Feb 1938 | Box 150 \ 3 scan0324 | |
| Letter to The Stainless Spinning Works requesting a quotation for supplying spinnings. | 1st Feb 1938 | Box 150 \ 3 scan0325 | |
| Letter to The Leyland & Birmingham Rubber Co. Ltd. regarding hose connections and placing an order. | 1st Feb 1938 | Box 150 \ 3 scan0326 | |
| Inquiry regarding the supply of transparent distributor caps and other plastic mouldings. | 28th Feb 1938 | Box 150 \ 3 scan0327 | |
| Letter to The Pulp Industries Ltd. requesting particulars of plastics they are marketing. | 2nd Feb 1938 | Box 150 \ 3 scan0328 | |
| Quotation from The Stainless Spinning Works for the supply of brass inserts. | 2nd Feb 1938 | Box 150 \ 3 scan0329 | |
| Letter from Transparent Ignition Distributors Ltd. confirming they only manufacture transparent distributor caps. | 3rd Feb 1938 | Box 150 \ 3 scan0330 | |
| Letter to Transparent Ignition Distributors Ltd. inquiring about the plastic material and suppliers for their transparent distributor caps. | 4th Feb 1938 | Box 150 \ 3 scan0331 | |
| Letter from The Leyland & Birmingham Rubber Co. Ltd. regarding the production of a sample hose connection. | 4th Feb 1938 | Box 150 \ 3 scan0332 | |
| Letter to John Marston Ltd. about soldering issues with Phantom III and Wraith matrices, and requesting a quotation for a Bentley III radiator. | 5th Feb 1938 | Box 150 \ 3 scan0333 | |
| Letter to J. Marston Ltd. regarding car heater tests, parts for Bentley and Phantom models, and shutter vanes. | 5th Feb 1938 | Box 150 \ 3 scan0334 | |
| Letter from John Marston Ltd regarding a fitting issue with the Phantom IV Radiator Shutter's Centre Stiffener. | 5th Feb 1938 | Box 150 \ 3 scan0335 | |
| Letter from Transparent Ignition Distributors Ltd. in response to an enquiry, directing to the 'Plastics' publication. | 7th Feb 1938 | Box 150 \ 3 scan0336 | |
| Changing the rubber hose specification from red to a dark grey outer coating. | 7th Feb 1938 | Box 150 \ 3 scan0337 | |
| Letter from Pulp Industries Limited regarding a sample of a Motor Car Pocket moulding. | 7th Feb 1938 | Box 150 \ 3 scan0338 | |
| Letter to Pulp Industries Ltd. requesting samples and a quotation for a filler cap. | 8th Feb 1938 | Box 150 \ 3 scan0339 | |
| Letter to Messrs. Birkbys Ltd. requesting material samples for filler caps as per blueprint Exs.348. | 8th Feb 1938 | Box 150 \ 3 scan0340 | |
| Letter to John Marston Ltd. regarding quotations and design discussions for radiator and cooler components. | 9th Feb 1938 | Box 150 \ 3 scan0341 | |
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