| Description | Date | Identifier | |
| The despatch of a Bentley radiator cap and mascot. | 18th Jan 1937 | Box 87 \ 1 scan0202 | |
| Despatch of a Bentley radiator cap and mascot removed from chassis 5.B.IV. | 18th Jan 1937 | Box 87 \ 1 scan0203 | |
| The modification and testing of a Bentley radiator with dummy shutters. | 4th May 1937 | Box 87 \ 1 scan0204 | |
| Recommending the standardisation of the calorstat spring on Bentley cars to regulate water temperatures. | 4th Feb 1937 | Box 87 \ 1 scan0205 | |
| Tests on 3RIV for cooling water temperatures with and without calorstat spring fitted. | 4th Feb 1937 | Box 87 \ 1 scan0206 | |
| Loads required to operate shutters on various radiators at the calorstat spindle. | 4th Nov 1936 | Box 87 \ 1 scan0207 | |
| Graph of Calorstat effort versus water temperature for a standard Bentley radiator, showing shutter positions. | 4th Nov 1936 | Box 87 \ 1 scan0208 | |
| The loads required to operate shutters on various types of radiators, all measured at the Calorstat Spindle. | 16th Jan 1936 | Box 87 \ 1 scan0209 | |
| Letter to John Marston & Co. Ltd. concerning Bentley Radiator specifications and spot welding feasibility. | 11th Feb 1937 | Box 87 \ 1 scan0210 | |
| Page 2 of a letter arranging a meeting and listing attached prints. | 11th Feb 1937 | Box 87 \ 1 scan0211 | |
| Fixed shutters for a Bentley, their appearance, potential savings, and a plan to show them in London. | 11th Feb 1937 | Box 87 \ 1 scan0212 | |
| Proposal to standardise fixed slats and thermostatic by-pass control on Bentley cars instead of thermostatic shutters. | 12th Feb 1937 | Box 87 \ 1 scan0213 | |
| Benefits of a new Bentley grille by Marston's, which eliminates rattles and saves money. | 12th Feb 1937 | Box 87 \ 1 scan0214 | |
| From Sg. to Gry. regarding Bentley Shutters and arranging a car viewing in London. | 22th Feb 1937 | Box 87 \ 1 scan0215 | |
| Proposal to standardise fixed dummy shutters on Bentley cars and design a new thermostatic by-pass system. | 22th Feb 1937 | Box 87 \ 1 scan0216 | |
| Cooling tests for car 3.B.IV carried out at the Montlhery track. | 4th Mar 1937 | Box 87 \ 1 scan0217 | |
| Cooling system tests, comparing different radiator matrices and shutter grille designs for Bentley and Phantom III models. | 4th Mar 1937 | Box 87 \ 1 scan0218 | |
| Summary table of test results measuring various temperatures for different radiator and engine configurations. | 6th Mar 1937 | Box 87 \ 1 scan0219 | |
| Instructions for assembling two different Bentley radiator matrices for interchangeability tests at Brooklands. | 6th Mar 1937 | Box 87 \ 1 scan0220 | |
| Standardisation of a Calorstat spring for Bentley cars. | 4th Feb 1937 | Box 87 \ 1 scan0221 | |
| Note regarding extra tool costs and the production start for the 'L' series chassis. | 18th Mar 1937 | Box 87 \ 1 scan0222 | |
| Noticeable fault in the appearance of dummy shutters. | 18th Mar 1937 | Box 87 \ 1 scan0223 | |
| Instructions for the examination, rebuild, and further testing of a Bentley radiator unit. | 20th Apr 1937 | Box 87 \ 1 scan0224 | |
| Dispatch of a Bentley Mk.VI radiator unit to John Marston & Co. for the fitment of special shutters. | 28th Apr 1937 | Box 87 \ 1 scan0225 | |
| Cooling system tests for a Bentley B.56.BN car at Brooklands race track. | 5th May 1937 | Box 87 \ 1 scan0226 | |
| Summary of cooling system specifications and standardisation for a Bentley car, including shutter openings and core types. | 5th May 1937 | Box 87 \ 1 scan0227 | |
| Results of cooling tests on a 4 1/4 Litre car at Brooklands. | 10th May 1937 | Box 87 \ 1 scan0228 | |
| Water temperature regulator and thermostat casing for Bentley water connections. | 10th May 1937 | Box 87 \ 1 scan0229 | |
| Standardisation proposal for the water connections between the engine and radiator on the 25/30 HP Bentley chassis. | 10th May 1937 | Box 87 \ 1 scan0230 | |
| Estimated cost for new tools required for production of the 'M' Series chassis. | 10th May 1937 | Box 87 \ 1 scan0231 | |
| Standardisation of all water joint washers to be made in 'Klingerite' material instead of Dermatine. | 10th May 1937 | Box 87 \ 1 scan0232 | |
| Production note regarding nil extra tool cost for introducing a part to the 'M' Series chassis. | 17th Jun 1937 | Box 87 \ 1 scan0233 | |
| Order and fitting instructions for a 58 MM. Mk.VI. Bentley radiator matrix. | 17th Jun 1937 | Box 87 \ 1 scan0234 | |
| Standardisation of dummy shutters and thermostat modifications for Bentley vehicles. | 23th Jun 1937 | Box 87 \ 1 scan0235 | |
| Development and testing of fixed radiator shutters for a Bentley. | 25th Jun 1937 | Box 87 \ 1 scan0236 | |
| Requesting for a Bentley with fixed radiator shutters to be sent for inspection. | 28th Jun 1937 | Box 87 \ 1 scan0237 | |
| Delay and the availability of a Bentley with Fixed Radiator Shutters for a test drive. | 2nd Jul 1937 | Box 87 \ 1 scan0238 | |
| Requesting a Bentley with fixed radiator shutters be sent to London for inspection. | 5th Jul 1937 | Box 87 \ 1 scan0239 | |
| Sending a Bentley car to London with a new thermometer for a Phantom III model. | 6th Jul 1937 | Box 87 \ 1 scan0240 | |
| Inspection of a Bentley with fixed radiator shutters and its future availability. | 7th Jul 1937 | Box 87 \ 1 scan0241 | |
| Confirming the approval of the Bentley radiator with fixed shutters and issuing a standardisation sheet for the M series. | 8th Jul 1937 | Box 87 \ 1 scan0242 | |
| Standardisation of a thermostat scheme for the Bentley M-series radiator. | 9th Jul 1937 | Box 87 \ 1 scan0243 | |
| Implementation of fixed radiator shutters for the Bentley 'M' Series chassis to save costs and eliminate rattling. | 16th Jul 1937 | Box 87 \ 1 scan0244 | |
| Letter from John Marston Limited requesting parts to complete a sample Bentley Radiator. | 20th Jul 1937 | Box 87 \ 1 scan0245 | |
| The dispatch of Bentley Radiator parts to John Marstons Ltd. | 23th Jul 1937 | Box 87 \ 1 scan0246 | |
| The introduction of Bentley Fixed Radiator Shutters on the 'M' Series chassis. | 6th Aug 1937 | Box 87 \ 1 scan0247 | |
| New drawings and parts for the Bentley Chassis, specifically concerning fixed radiator shutters and associated components. | 18th Aug 1937 | Box 87 \ 1 scan0248 | |
| List of parts and amendments for vehicle sections including water connections, fan, radiator, and shutters. | 18th Aug 1937 | Box 87 \ 1 scan0249 | |
| Standardisation of a new radiator matrix to save weight and cost. | 20th Aug 1937 | Box 87 \ 1 scan0250 | |
| Note on the nil extra tool cost for bringing a change into production on the 'M' Series chassis. | 27th May 1932 | Box 87 \ 1 scan0251 | |
| Status of a Standardisation Sheet for Bentley Chassis fixed type radiator shutters. | 3rd Sep 1937 | Box 87 \ 1 scan0252 | |
| The issuance and costing of a Standardisation Sheet for Bentley fixed type shutters and thermostat. | 20th Sep 1937 | Box 87 \ 1 scan0253 | |
| Blank 'Print Issue Sheet' form for requesting prints. | 7th Jun 1945 | Box 87 \ 1 scan0254 | |
| Cooling system tests carried out at Brooklands on a car fitted with a Marston dummy shutter and thermostat. | 20th Sep 1937 | Box 87 \ 1 scan0255 | |
| Summary report on the cooling system being standardised for the Bentley M. series. | 20th Sep 1937 | Box 87 \ 1 scan0256 | |
| Test results for the 6.B.IV. cooling system on the road and at Brooklands track. | 30th Sep 1937 | Box 87 \ 1 scan0257 | |
| Faulty Bentley radiator from John Marston Ltd. requiring examination and repair. | 30th Sep 1937 | Box 87 \ 1 scan0258 | |
| Request to issue an official order to John Marston for work on fitting dummy shutters to a Bentley radiator. | 25th Oct 1937 | Box 87 \ 1 scan0259 | |
| Recalling a standardization sheet for a Bentley radiator and thermostat scheme due to failures with excessive water pressures. | 26th Oct 1937 | Box 87 \ 1 scan0260 | |
| Potential standardisation of the Bentley Fixed Shutter Radiator. | 1st Nov 1937 | Box 87 \ 1 scan0261 | |
| Brief summary of test results for four different thermostat schemes. | 1st Nov 1937 | Box 87 \ 1 scan0262 | |
| Summary comparing three different engineering schemes based on cost, availability, and water pressure. | 15th Nov 1937 | Box 87 \ 1 scan0263 | |
| Instruction to modify the upper valve bleed hole for the thermostat water temperature control on the Bentley k series. | 15th Nov 1937 | Box 87 \ 1 scan0264 | |
| Conditions to be observed by John Marston Ltd. when plating a Bentley radiator grille. | 29th Nov 1937 | Box 87 \ 1 scan0265 | |
| Return of an incorrect Bentley Dummy shutter set to the manufacturer, John Marston Ltd. | 15th Dec 1937 | Box 87 \ 1 scan0266 | |
| Letter to John Marston Ltd. detailing criticisms of a received Bently Dimmy shutter set. | 15th Dec 1937 | Box 87 \ 1 scan0267 | |
| Letter detailing multiple faults with a prototype shutter set, returning the item, and specifying requirements for production. | 15th Dec 1937 | Box 87 \ 1 scan0268 | |
| The design and manufacturing of radiator stiffeners and shutters for Bentley vehicles. | 15th Dec 1937 | Box 87 \ 1 scan0269 | |
| Letter requesting a cost analysis for a radiator compared to a competitor's, and the results of a dissipation test. | 15th Dec 1937 | Box 87 \ 1 scan0270 | |
| Request to forward a Bentley radiator to Messrs. John Marston for use as a passing off rig for dummy shutter sets. | 15th Jan 1938 | Box 87 \ 1 scan0271 | |
| Standard Bentley Radiator sent to Messrs. John Marston Ltd. for use as a passing off jig for dummy shutter sets. | 29th Jan 1938 | Box 87 \ 1 scan0272 | |
| Instruction to resolve a fitting issue with the Bentley II dummy shutter sets caused by a one-piece stiffener. | 8th Feb 1938 | Box 87 \ 1 scan0273 | |
| Standardisation and issues with B.II and B.III dummy shutter sets. | 4th Jul 1938 | Box 87 \ 1 scan0274 | |
| Modifying drill jigs for a stiffener to achieve a specific gap for an approximate cost of £8. | 4th Jul 1938 | Box 87 \ 1 scan0275 | |
| Design and required schemes for the front end of the Bentley 6. | 28th Sep 1940 | Box 87 \ 1 scan0276 | |
| 1/16 scale design of the Bentley 6 car and related drawing plans. | 1st Apr 1930 | Box 87 \ 1 scan0277 | |
| Blueprints and the fitting of an A.C. Steam Valve to a B.V. Radiator. | 9th Dec 1940 | Box 87 \ 1 scan0278 | |
| To Roy requesting an order for two sets of pistons. | 2nd Jan 1935 | Box 87 \ 2 scan0001 | |
| Letter to The Light Production Co. Ltd. regarding promising results from an endurance test on RR.53 pistons. | 2nd Jan 1935 | Box 87 \ 2 scan0002 | |
| Letter from The Light Production Co. Ltd. regarding endurance tests and delivery of RR.53 pistons. | 7th Jan 1935 | Box 87 \ 2 scan0003 | |
| Letter to The Light Production Co. Ltd. regarding the testing of two sets of pistons and arranging a follow-up meeting. | 8th Jan 1935 | Box 87 \ 2 scan0004 | |
| Wear of anodic coatings on R.R. 53 pistons and suggesting improvements. | 3rd Jan 1935 | Box 87 \ 2 scan0005 | |
| Suggesting three tests to be carried out on engine pistons, including anodical oxidisation and etching. | 18th Jan 1935 | Box 87 \ 2 scan0006 | |
| Anodic oxidation of RR.53 pistons and the durability of American anodic coatings. | 18th Jan 1935 | Box 87 \ 2 scan0007 | |
| Requesting confirmation on the satisfactory testing of experimental Aerolite pistons for Bentley chassis. | 18th Jan 1935 | Box 87 \ 2 scan0008 | |
| Arranging the despatch of six Aerolite Pistons to Light Production Co. Ltd. for investigation and replacement. | 21th Jan 1935 | Box 87 \ 2 scan0009 | |
| Request to order one set of Aerolite Pistons in RR.53 alloy for a Bentley. | 22th Jan 1935 | Box 87 \ 2 scan0010 | |
| Letter to C.H. Brooks of The Light Production Co. Ltd. regarding lightened Bentley and Specialloid pistons. | 6th Feb 1935 | Box 87 \ 2 scan0011 | |
| The production of Aerolite pistons and the associated cylinder bore limits. | 18th Feb 1935 | Box 87 \ 2 scan0012 | |
| Letter to The Light Production Co. Ltd. requesting a delivery date for lightened type Bentley pistons. | 25th Feb 1935 | Box 87 \ 2 scan0013 | |
| Confirming a conversation about reducing the clearance limit on Aerolite pistons. | 25th Feb 1935 | Box 87 \ 2 scan0014 | |
| Letter from The Light Production Co. Ltd. regarding the reduction in weight of a Bentley Piston. | 27th Feb 1935 | Box 87 \ 2 scan0015 | |
| Letter to The Light Production Co. Ltd. regarding the late arrival of pistons. | 28th Feb 1935 | Box 87 \ 2 scan0016 | |
| Letter concerning the supply and specifications of light-weight Bentley Pistons and Gudgeon Pins. | 4th Mar 1935 | Box 87 \ 2 scan0017 | |
| Order for four sets of six lightened type Aerolite Pistons for a Bentley. | 14th Mar 1935 | Box 87 \ 2 scan0018 | |
| Letter requesting the grinding of experimental semi-split pistons to a specific cam form. | 14th Mar 1935 | Box 87 \ 2 scan0019 | |
| Letter to The Light Production Co. Ltd. requesting the grinding of experimental semi-split type pistons. | 14th Mar 1935 | Box 87 \ 2 scan0020 | |
| Chassis numbers for Bentley piston failures to investigate a link to the absence of an oil baffle. | 15th Mar 1935 | Box 87 \ 2 scan0021 | |
| Standardisation of parts document for Aerolite pistons in RR.53 alloy. | 19th Jan 1935 | Box 87 \ 2 scan0022 | |
| Completion of a standard cost sheet and its production implementation. | 24th Oct 1935 | Box 87 \ 2 scan0023 | |
| | | | |
