| Description | Date | Identifier | |
| Letter to John Marston Ltd. regarding the elimination of a flange on a car heater and a list of alteration prints for a B.38 radiator. | 16th Mar 1939 | Box 150 \ 2 scan0220 | |
| Letter to John Marston Ltd. confirming a telephone conversation about a radiator modification and engine parts. | 24th Mar 1939 | Box 150 \ 2 scan0221 | |
| From 'Rm' to 'Hs' proposing the sale of an old experimental Phantom III engine unit to Marstons. | 27th Mar 1939 | Box 150 \ 2 scan0222 | |
| Various parts sent to Messrs. John Marston Ltd. in Wolverhampton. | 29th May 1939 | Box 150 \ 2 scan0223 | |
| The electrical components for a Ph.III unit switchboard sent for despatch to Marstons. | 30th Mar 1939 | Box 150 \ 2 scan0224 | |
| Dispatch request for 23 unfinished shutter blades to be sent to Messrs. John Marston Ltd. | 6th Apr 1939 | Box 150 \ 2 scan0225 | |
| Dispute over the invoicing of electrical fitments for a Phantom III engine sent to Marstons. | 6th Apr 1939 | Box 150 \ 2 scan0226 | |
| Letter to John Marston Ltd. regarding a visit to instruct on a new Wraith 80 radiator. | 24th Apr 1939 | Box 150 \ 2 scan0227 | |
| Proposal to simplify the radiator manufacturing process with supplier John Marston Ltd. | 26th Apr 1939 | Box 150 \ 2 scan0228 | |
| Letter to John Marston Ltd. instructing them to proceed with the Wraith radiator. | 26th Apr 1939 | Box 150 \ 2 scan0229 | |
| Official order be placed for one Wraith radiator. | 27th Apr 1939 | Box 150 \ 2 scan0230 | |
| Letter from John Marston Ltd. seeking clarification on whether to update an existing Wraith 80 radiator or build a new one. | 27th Apr 1939 | Box 150 \ 2 scan0231 | |
| Letter to Birmingham Electric Furnaces Ltd. inquiring about their furnace capacity for copper brazing radiator matrix units. | 2nd May 1939 | Box 150 \ 2 scan0232 | |
| Letter from Birmingham Electric Furnaces Ltd discussing furnace capabilities for brazing radiator cores. | 4th May 1939 | Box 150 \ 2 scan0233 | |
| Letter from John Marston Limited chasing missing engine supporting brackets, exhaust pipe flanges, and spherical washers for a Phantom III Engine. | 5th May 1939 | Box 150 \ 2 scan0234 | |
| Request to despatch two front engine feet to Marstons of Wolverhampton for a Phantom III engine. | 8th May 1939 | Box 150 \ 2 scan0235 | |
| Requesting an official order be passed to John Marstons Ltd for Ripple and Cresta radiators. | 17th May 1939 | Box 150 \ 2 scan0236 | |
| Telegram received by telephone detailing a list of required Wraith car parts and castings. | 2nd Jun 1939 | Box 150 \ 2 scan0237 | |
| Telegram received by telephone listing various automotive parts and numbers. | 2nd Jun 1939 | Box 150 \ 2 scan0238 | |
| The rationalisation programme for radiator bottom tanks to make them suitable for both aluminium and cast iron engines. | 2nd Jun 1939 | Box 150 \ 2 scan0239 | |
| Letter from the Experimental Department to John Marston Ltd. concerning the repair of radiators. | 2nd Jun 1939 | Box 150 \ 2 scan0240 | |
| Letter to John Marstons Ltd. regarding the dispatch of substitute wing stay brackets and collection of a matrix. | 5th Jun 1939 | Box 150 \ 2 scan0241 | |
| Requesting an official order for radiator hose from Spot Rubber Co. Derby. | 6th Jun 1939 | Box 150 \ 2 scan0242 | |
| The principle points of the Bentley 'Cornich' Radiator construction. | 17th Jun 1939 | Box 150 \ 2 scan0243 | |
| Request to make 18 manometer tubes. | 20th Jun 1939 | Box 150 \ 2 scan0244 | |
| Official order for various radiators to be placed with John Marston Ltd. | 20th Jun 1939 | Box 150 \ 2 scan0245 | |
| Letter to John Marston Ltd. regarding the production scheme for Silver Dawn, Wraith 80, and Continental radiators. | 20th Jun 1939 | Box 150 \ 2 scan0246 | |
| Letter discussing the urgency of radiators versus the completion of the Cresta model. | 20th Jun 1939 | Box 150 \ 2 scan0247 | |
| Letter to Messrs. John Marston Ltd. confirming the order of priority for various car radiators. | 22th Jun 1939 | Box 150 \ 2 scan0248 | |
| Letter to J. Marston Ltd. regarding production of Bentley V radiators and shutters. | 22th Jun 1939 | Box 150 \ 2 scan0249 | |
| Order for Ripple dummy shutters to be placed with John Marstons Ltd. | 22th Jun 1939 | Box 150 \ 2 scan0250 | |
| Modifications to the Front Apron & Starting Handle Bracket for the Silver Dawn and Silver Wraith models. | 26th Jun 1939 | Box 150 \ 2 scan0251 | |
| Letter from John Marston Ltd. regarding the production of shutters for Bentley V. Radiators. | 27th Jun 1939 | Box 150 \ 2 scan0252 | |
| Letter to John Marston Ltd. regarding a drawing error for a B.V. bottom tank and the dispatch of related parts. | 27th Jun 1939 | Box 150 \ 2 scan0253 | |
| Delays in supplying radiators for Cresta, Ripple, and Corniche chassis due to parts shortages. | 28th Jun 1939 | Box 150 \ 2 scan0254 | |
| Requesting an official order for B.V. shutters to be placed with John Marston Ltd. | 29th Jun 1939 | Box 150 \ 2 scan0255 | |
| Material change for the B.V. filler ring from steel to brass for simplification. | 29th Jun 1939 | Box 150 \ 2 scan0256 | |
| Letter to John Marston Ltd. regarding modifications for 'Corniche' and 'Ripple' radiators and a material change for a filler ring. | 29th Jun 1939 | Box 150 \ 2 scan0257 | |
| Typed memo confirming a meeting change with Steadman of Sunbeam, Wolverhampton. | 3rd Jul 1939 | Box 150 \ 2 scan0258 | |
| Arranging for a Mr. Steadman to collect parts for a Ripple Radiator. | 10th Jul 1939 | Box 150 \ 2 scan0259 | |
| The urgent dispatch of Ripple Radiator Parts to a supplier. | 10th Jul 1939 | Box 150 \ 2 scan0260 | |
| Development and testing of a pressure cooling system, including various components. | 11th Jul 1939 | Box 150 \ 2 scan0261 | |
| Covering order to John Marston Ltd. for a Ripplet radiator. | 13th Jul 1939 | Box 150 \ 2 scan0262 | |
| Letter to John Marstons Ltd. detailing modifications to radiator mountings for the Silver Dawn and Silver Wraith, and a new 'Ripplet' radiator design. | 13th Jul 1939 | Box 150 \ 2 scan0263 | |
| Page 2 of a letter confirming that an official order will be sent. | 13th Jul 1939 | Box 150 \ 2 scan0264 | |
| Letter to John Marston Ltd. modifying a radiator order to prioritise the Wraith 80 for chassis 33.G.7. | 9th Aug 1939 | Box 150 \ 2 scan0265 | |
| Letter from John Marston Limited confirming a visit and listing required parts for an A.T. Radiator. | 15th Aug 1939 | Box 150 \ 2 scan0266 | |
| Correspondence to John Marston Ltd. regarding production car heaters, radiators and a drawing office mistake. | 16th Aug 1939 | Box 150 \ 2 scan0267 | |
| Tests on a Mark III versus a Mark V heater matrix, recommending the adoption of the Mark III. | 16th Aug 1939 | Box 150 \ 2 scan0268 | |
| Request to The Leyland & Birmingham Rubber Co. Ltd. for sample hoses for radiator connections due to failures in pressure cooling experiments. | 19th Aug 1939 | Box 150 \ 2 scan0269 | |
| Letter from a rubber manufacturer regarding the failure of radiator hose connections during testing. | 21th Aug 1939 | Box 150 \ 2 scan0270 | |
| Letter to John Marston Ltd. regarding a stiff car heater fan spindle and an enquiry about manufacturing a pressure cooling radiator. | 21th Aug 1939 | Box 150 \ 2 scan0271 | |
| Requesting the dispatch of a water hose to Messrs. Leyland & Birmingham Rubber Co. Ltd. for examination. | 22th Aug 1939 | Box 150 \ 2 scan0272 | |
| Letter from the Experimental Department to The Leyland & Birmingham Rubber Co. Ltd. about a failed hose. | 22th Aug 1939 | Box 150 \ 2 scan0273 | |
| Letter concerning a failed sample hose connection and the preparation of new approval samples. | 23th Aug 1939 | Box 150 \ 2 scan0274 | |
| Letter to The Leyland & Birmingham Rubber Co. Ltd. requesting the production of two sets of three different hoses. | 25th Aug 1939 | Box 150 \ 2 scan0275 | |
| Official order for radiators and hose connections from various suppliers. | 25th Aug 1939 | Box 150 \ 2 scan0276 | |
| Letter from John Marston Ltd requesting an official order for modification work on a Bentley V radiator. | 25th Aug 1939 | Box 150 \ 2 scan0277 | |
| Visit to John Marstons discussing corrosion issues and potential solutions for the Phantom III engine. | 25th Aug 1939 | Box 150 \ 2 scan0278 | |
| The development and modification of car components including radiators, heaters, corrosion inhibitors, and a yoke. | 25th Aug 1939 | Box 150 \ 2 scan0279 | |
| Construction of SCD.1179 by Marstons. | 25th Aug 1939 | Box 150 \ 2 scan0280 | |
| Letter from The Leyland & Birmingham Rubber Co Ltd regarding sample hose connections. | 29th Aug 1939 | Box 150 \ 2 scan0281 | |
| Letter from The Leyland & Birmingham Rubber Co Ltd confirming the dispatch of straight hose samples for testing. | 30th Aug 1939 | Box 150 \ 2 scan0282 | |
| Letter from a supplier inquiring about an inspection report for hose samples and tests on part number E.B.3748. | 18th Sep 1939 | Box 150 \ 2 scan0283 | |
| Letter to Messrs. John Marston Ltd. responding to queries about the Silver Dawn radiator. | 29th Sep 1939 | Box 150 \ 2 scan0284 | |
| Letter to John Marston Ltd. clarifying details on radiator straps and the Ripplet radiator. | 29th Sep 1939 | Box 150 \ 2 scan0285 | |
| Letter to John Marston Ltd. regarding the progress of chassis radiator orders and potential modifications. | 18th Oct 1939 | Box 150 \ 2 scan0286 | |
| The delivery status of experimental Ripplet and Silver Dawn radiators. | 26th Oct 1939 | Box 150 \ 2 scan0287 | |
| Letter to John Marston Ltd. requesting a list of their standard radiator matrix thicknesses. | 1st Nov 1939 | Box 150 \ 2 scan0288 | |
| The despatch of two sets of radiator parts to Messrs. John Marston Ltd. | 1st Nov 1939 | Box 150 \ 2 scan0289 | |
| Visit to Hucknall discussing modifications and developments for aero engine radiators. | 12th Jan 1940 | Box 150 \ 2 scan0290 | |
| Cabin heating and wind tunnel testing procedures. | 12th Jan 1940 | Box 150 \ 2 scan0291 | |
| Visit to supplier John Marston regarding the status of experimental radiators and car heaters. | 8th Jan 1940 | Box 150 \ 2 scan0292 | |
| Heater fans, radiator performance, and corrosion issues in cooling systems. | 15th Jan 1940 | Box 150 \ 2 scan0293 | |
| Engine cooling system issues including corrosion, cost analysis, and a test plant. | 15th Jan 1940 | Box 150 \ 2 scan0294 | |
| Preliminary report from John Marston Limited on oil cooler tests carried out on a test plant. | 1st Dec 1939 | Box 150 \ 2 scan0295 | |
| Experimental range of results from tests conducted on an R.A.E. oil cooler for the 'Hercules III' engine. | 1st Dec 1939 | Box 150 \ 2 scan0296 | |
| Guide on the care and servicing of car radiator systems. | 1st Dec 1939 | Box 150 \ 2 scan0297 | |
| Radiator cleaning procedures, the use of non-freezing solutions, and water pump packing maintenance. | 23th Jan 1940 | Box 150 \ 2 scan0298 | |
| Official order request to John Marston for a car heater, radiator shell, and shutters. | 23th Jan 1940 | Box 150 \ 2 scan0299 | |
| Letter to John Marston Ltd. regarding the modification of radiators due to war conditions. | 25th Jan 1940 | Box 150 \ 2 scan0300 | |
| Letter to Morris Motors' Radiator Division regarding the construction and testing of a new radiator matrix on a Bentley motor car. | 25th Jan 1940 | Box 150 \ 2 scan0301 | |
| Letter to John Marston Ltd. regarding a Wraith 80 inner radiator unit for a Silver Phantom and repairs to a Bentley V radiator. | 25th Jan 1940 | Box 150 \ 2 scan0302 | |
| Letter to Searle Radiator Ltd. proposing to test Aero Division radiator matrices on a Bentley motor car. | 26th Jan 1940 | Box 150 \ 2 scan0303 | |
| Letter from The Searle Radiator Company Ltd. arranging a meeting to discuss an enquiry. | 29th Jan 1940 | Box 150 \ 2 scan0304 | |
| Letter from Morris Motors Radiators Branch discussing the manufacturing and development of fin and tube radiators for motor cars versus aircraft. | 30th Jan 1940 | Box 150 \ 2 scan0305 | |
| Continuation letter from Morris Motors regarding the study of blueprints for a suitable Radiator Core. | 30th Jan 1940 | Box 150 \ 2 scan0306 | |
| Request from The Searle Radiator Company for a copy of a misplaced letter they received from Rolls-Royce. | 30th Jan 1940 | Box 150 \ 2 scan0307 | |
| Letter to The Searle Radiator Co. Ltd. arranging a visit for Mr. C. Searle. | 1st Feb 1940 | Box 150 \ 2 scan0308 | |
| Letter to Messrs. Morris Motors Ltd. regarding an arrangement for Mr. Edwards to visit. | 2nd Feb 1940 | Box 150 \ 2 scan0309 | |
| Requesting an official order for two Bentley V inner radiator units from Searle Radiator Co. Ltd. | 6th Feb 1940 | Box 150 \ 2 scan0310 | |
| Letter from Morris Motors regarding a meeting arrangement for Mr. Edwards. | 7th Feb 1940 | Box 150 \ 2 scan0311 | |
| Letter from S. Smith & Sons concerning a delay in dispatching a Thermostatic Pressure Release Valve. | 7th Feb 1940 | Box 150 \ 2 scan0312 | |
| Short typed message regarding a cancelled appointment for Edwards due to illness. | 9th Feb 1940 | Box 150 \ 2 scan0313 | |
| Requesting the despatch of radiator and valve parts to The Searle Radiator Co. Ltd. | 20th Feb 1940 | Box 150 \ 2 scan0314 | |
| Letter to The Searle Radiator Co. Ltd. regarding parts for experimental radiators. | 10th Feb 1940 | Box 150 \ 2 scan0315 | |
| Letter from John Marston Ltd. regarding the modification of a Silver Dawn radiator into a Wraith 80. | 14th Feb 1940 | Box 150 \ 2 scan0316 | |
| Letter to Morris Motors Ltd. apologising for a missed appointment and rescheduling. | 14th Feb 1940 | Box 150 \ 2 scan0317 | |
| Confirming a request for prints of experimental BV radiators for the Searle Radiator Co. | 27th Feb 1940 | Box 150 \ 2 scan0318 | |
| Letter to John Marston Ltd. enclosing prints for the Ripple Radiator shell. | 27th Feb 1940 | Box 150 \ 2 scan0319 | |
| | | | |
