| Description | Date | Identifier | |
| The design specifics of the Bensport Radiator, including the matrix height. | 11th Oct 1932 | Box 87 \ 1 scan0002 | |
| Sending a drawing for a Bensport radiator matrix and the consideration of alternative designs. | 12th Oct 1932 | Box 87 \ 1 scan0003 | |
| Attaching a blueprint and details for the Bensport Chassis radiator matrix. | 14th Oct 1932 | Box 87 \ 1 scan0004 | |
| Bensport radiator, discussing drawing N.Sch.3565 and various Harrison Matrix forms. | 12th Oct 1932 | Box 87 \ 1 scan0005 | |
| Design and specifications for the 'Bensport' radiator and shutters, including models, materials, and associated components. | 21th Oct 1932 | Box 87 \ 1 scan0006 | |
| Standard 3-litre Bentley badge and its required chromium and black enamel finish. | 4th Nov 1932 | Box 87 \ 1 scan0007 | |
| Confirming revised dimensions for Bensport Radiator Blocks after a phone call with Messrs. John Marston. | 4th Nov 1932 | Box 87 \ 1 scan0008 | |
| Modified radiator for the Bensport J.1 model to suit an existing engine unit. | 8th Nov 1932 | Box 87 \ 1 scan0009 | |
| Final design of the B.3 radiator bottom tank and suspension for the mock-up chassis. | 2nd Nov 1932 | Box 87 \ 1 scan0010 | |
| Modifications to a Bensport radiator and brake lever to improve clearance. | 16th Nov 1932 | Box 87 \ 1 scan0011 | |
| Modification of front axle brake levers to prevent them fouling the Bensport radiator. | 8th Nov 1932 | Box 87 \ 1 scan0012 | |
| Blueprint LeC.3289 for the Experimental Bensport J.1. | 26th Nov 1932 | Box 87 \ 1 scan0013 | |
| Provision of drawing LeC.3402 for stiffened radiator shutters on a Bensport Series 1. | 10th Mar 1933 | Box 87 \ 1 scan0014 | |
| Design and construction of a detachable radiator grill and apron for the Bensport model. | 16th Mar 1933 | Box 87 \ 1 scan0015 | |
| Test radiator grill for a B.4. model, detailing its construction and potential modifications. | 20th Mar 1933 | Box 87 \ 1 scan0016 | |
| Decision to fit a stone guard and remove the shutters from the Bensport radiator. | 20th Mar 1933 | Box 87 \ 1 scan0017 | |
| Clarifying a point from the minutes of a conference regarding circlip strength and requesting tests on a Bensport engine. | 20th Mar 1933 | Box 87 \ 1 scan0018 | |
| Modification scheme for a Bensport radiator, involving the deletion of shutters and the fitting of a thermostat and stone guard. | 23th Mar 1933 | Box 87 \ 1 scan0019 | |
| Bensport radiator, advocating for a thermostatic control instead of shutters. | 23th Mar 1933 | Box 87 \ 1 scan0020 | |
| Overheating Peregrine engine oil, suggesting improvements by referencing American car cooling systems. | 17th Mar 1933 | Box 87 \ 1 scan0021 | |
| Production instructions for the Bensport Series 1 radiator and bonnet, including material and design specifications. | 27th Mar 1933 | Box 87 \ 1 scan0022 | |
| Radiator shutters and piston issues on the Bensport car. | 27th Mar 1933 | Box 87 \ 1 scan0023 | |
| Bensport radiator scheme, piston failures, and testing plans for the Bensport car. | 28th Mar 1933 | Box 87 \ 1 scan0024 | |
| Bonnet material and production proportions for open versus closed body types for the Bensport Series 1 chassis. | 6th Apr 1933 | Box 87 \ 1 scan0025 | |
| The removal of tie bars from the Bensport radiator bottom tank. | 13th Apr 1933 | Box 87 \ 1 scan0026 | |
| Modifications to a radiator bottom tank for simplification. | 20th Apr 1933 | Box 87 \ 1 scan0027 | |
| Order for rubbers and Ferobestos parts for a Bensport radiator mounting. | 24th Apr 1933 | Box 87 \ 1 scan0028 | |
| Schemes for altering the Bensport radiator mounting on Bentley cars. | 26th Apr 1933 | Box 87 \ 1 scan0029 | |
| Torque reaction dampers, chassis suitability, and modifications for engine mounting. | 26th Apr 1933 | Box 87 \ 1 scan0030 | |
| Request to make an experimental set for mounting the Bensport radiator directly onto the engine, referencing blueprint LeC.3467. | 28th Apr 1933 | Box 87 \ 1 scan0031 | |
| Modifications to the Bensport radiator mounting. | 1st May 1933 | Box 87 \ 1 scan0032 | |
| Clarifying decisions made about the first 15 chassis of the 3.5 litre Bentley. | 26th May 1933 | Box 87 \ 1 scan0033 | |
| New Bentley radiator grille design featuring vertical, chromium-plated slats. | 27th May 1933 | Box 87 \ 1 scan0034 | |
| Design alterations for the new shape Bentley radiator. | 30th May 1933 | Box 87 \ 1 scan0035 | |
| Ordering of specific rubber pads for the radiator suspension on the 3 1/2 Litre Bentley. | 31th May 1933 | Box 87 \ 1 scan0036 | |
| Requesting a test on a modified Water Temperature Regulator design for a Bentley vehicle. | 20th Jul 1933 | Box 87 \ 1 scan0037 | |
| Blueprint detailing a modification to a Bensport water temperature regulator. | 20th Jul 1933 | Box 87 \ 1 scan0038 | |
| On testing and improvements for the Bentley centre radiator mounting to resolve bonnet knocks. | 27th Jun 1933 | Box 87 \ 1 scan0039 | |
| Confirming a modified Bentley radiator shell is ready for production. | 24th Jul 1933 | Box 87 \ 1 scan0040 | |
| Improved form of radiator jacket for the Bentley Chassis. | 24th Jul 1933 | Box 87 \ 1 scan0041 | |
| Design and production of radiator badges for Bentley cars. | 1st Aug 1933 | Box 87 \ 1 scan0042 | |
| Photograph of a Bentley 'B' winged radiator badge. | 31th Jul 1933 | Box 87 \ 1 scan0043 | |
| Design drawing for the Bentley Radiator Badge with detailed annotations. | 31th Jul 1933 | Box 87 \ 1 scan0044 | |
| Modifications to the Bentley radiator shell to accommodate shutters. | 31th Aug 1933 | Box 87 \ 1 scan0045 | |
| Improvements to the Bentley radiator shutters and shell. | 2nd Sep 1933 | Box 87 \ 1 scan0046 | |
| Confirming design changes for thermostatically operated shutters on a Bentley. | 5th Sep 1933 | Box 87 \ 1 scan0047 | |
| Drawing for a Bentley Thermostat modification. | 9th Sep 1933 | Box 87 \ 1 scan0048 | |
| Alteration request for the 3 1/2 Litre Bentley radiator side steady brackets to prevent wear. | 21th Sep 1933 | Box 87 \ 1 scan0049 | |
| Design revision for the Bentley centre radiator mounting to increase movement and prevent stud failure. | 25th Sep 1933 | Box 87 \ 1 scan0050 | |
| New design for an experimental Bentley radiator with a reduced depth to save weight. | 10th Oct 1933 | Box 87 \ 1 scan0051 | |
| Request to manufacture two Bentley radiators with a new 70mm matrix specification. | 27th Oct 1933 | Box 87 \ 1 scan0052 | |
| Requesting an increase in thread size for a Bentley radiator tie rod due to a failure. | 20th Dec 1933 | Box 87 \ 1 scan0053 | |
| Disadvantages of radiator shutters and considering chromium-plated grids as an aesthetic alternative. | 2nd Jan 1934 | Box 87 \ 1 scan0054 | |
| Decision not to fit new levers to the Bentley radiator thermostat. | 23th Jan 1934 | Box 87 \ 1 scan0055 | |
| Modified fixing for the Ferodo strip on a Bentley radiator to prevent damage to bonnet panels. | 23th Jan 1934 | Box 87 \ 1 scan0056 | |
| Modifications for fitting a Ferodo strip on the Bentley radiator. | 31th Jan 1934 | Box 87 \ 1 scan0057 | |
| Introduction of a starting handle tunnel with cover for Bentley radiator shutters. | 9th Mar 1934 | Box 87 \ 1 scan0058 | |
| Request to experimentally produce a radiator grille for a Bentley, to replace the existing shutters. | 6th Apr 1934 | Box 87 \ 1 scan0059 | |
| Fitting of a radiator grille and thermostat to a Bentley. | 28th Apr 1934 | Box 87 \ 1 scan0060 | |
| Modifications to a Bentley Radiator Grille, including fitting stiffeners and a starting handle tunnel. | 7th Jul 1934 | Box 87 \ 1 scan0061 | |
| The testing of a new Bentley radiator grille. | 10th May 1934 | Box 87 \ 1 scan0062 | |
| Test report on a Bentley radiator grille's cooling efficiency at Brooklands Track. | 16th May 1934 | Box 87 \ 1 scan0063 | |
| Graph charting the effect of a radiator grille on engine cooling for a Bentley at different speeds. | 15th May 1934 | Box 87 \ 1 scan0064 | |
| Effect of a radiator grille on bonnet air temperature. | 17th May 1934 | Box 87 \ 1 scan0065 | |
| Graph of radiator tests at Brooklands Track, recording under-bonnet air temperatures with and without a grille fitted at various speeds. | 15th May 1934 | Box 87 \ 1 scan0066 | |
| Graph plotting the results of radiator tests, showing under-bonnet air temperatures at different speeds with and without a grille. | 16th Jan 1934 | Box 87 \ 1 scan0067 | |
| Instructions for radiator modifications on car B23AE for Brooklands tests. | 17th May 1934 | Box 87 \ 1 scan0068 | |
| Letter from a supplier regarding a delivery delay for a Harrison Vee bonded matrix radiator. | 17th May 1934 | Box 87 \ 1 scan0069 | |
| Instructions for fitting and modifying radiators on a Bentley car for Brooklands tests. | 23th May 1934 | Box 87 \ 1 scan0070 | |
| Requesting standard Bentley radiator parts be sent to John Marston Ltd. for fitting to a Harrison Vee bonded matrix radiator. | 18th May 1934 | Box 87 \ 1 scan0071 | |
| Request to test a 58mm Harrison Vee bonded matrix radiator on a Bentley car for 10,000 miles. | 18th May 1934 | Box 87 \ 1 scan0072 | |
| Letter to Messrs. John Marston Ltd. regarding the assembly of parts for a Bentley car radiator. | 18th May 1934 | Box 87 \ 1 scan0073 | |
| Instruction to modify and re-test a Bentley radiator grille for temperature drop at Brooklands. | 1st Jun 1934 | Box 87 \ 1 scan0074 | |
| Requesting the addition of metal strips to a Bentley radiator grille to improve airflow. | 5th Jun 1934 | Box 87 \ 1 scan0075 | |
| Standardisation of unbalanced shutters on a Bentley chassis. | 2nd Jul 1934 | Box 87 \ 1 scan0076 | |
| Production of tools for unbalanced shutters on the Bentley Chassis. | 4th Jul 1934 | Box 87 \ 1 scan0077 | |
| The weights of various Bentley radiators. | 5th Oct 1934 | Box 87 \ 1 scan0078 | |
| List comparing the empty and full weights of four different Bentley radiator configurations. | 1st May 1934 | Box 87 \ 1 scan0079 | |
| Comparison of weights for different Bentley radiator models, both empty and full of water. | 1st May 1934 | Box 87 \ 1 scan0080 | |
| Improved manufacturing methods and additional tinning charges for Marston Radiator Matrices. | 1st Jul 1934 | Box 87 \ 1 scan0081 | |
| Request for the return of a 58mm Bentley Harrison Vee bonded matrix for comparison testing. | 14th Sep 1934 | Box 87 \ 1 scan0082 | |
| Bentley radiator tests comparing Harrison type and standard matrix constructions. | 14th Sep 1934 | Box 87 \ 1 scan0083 | |
| Fan options for different climates, radiator specifications, and the effect of air intake shutters on carburation. | 14th Sep 1934 | Box 87 \ 1 scan0084 | |
| Tests of various Bentley radiators, fans, and radiator grilles at Brooklands. | 14th Sep 1934 | Box 87 \ 1 scan0085 | |
| Conclusions from tests on different radiator matrix types, grilles, shutters, and fans for a Bentley. | 14th Sep 1934 | Box 87 \ 1 scan0086 | |
| Effect of different cooling fans on a vehicle's maximum speed and lap time. | 14th Sep 1934 | Box 87 \ 1 scan0087 | |
| Graph comparing the performance of different Bentley radiator matrices tested at Brooklands. | 7th Sep 1934 | Box 87 \ 1 scan0088 | |
| Line graph comparing the cooling efficiencies of a Marston Mark III radiator matrix with and without shutters and a grille, tested on a Bentley 3B IV. | 8th Sep 1934 | Box 87 \ 1 scan0089 | |
| Graph showing the rise of air intake temperature with the rise of water temperature during tests on a Bentley 3 B.T.V. | 8th Sep 1934 | Box 87 \ 1 scan0090 | |
| Graph comparing the performance of different Bentley radiator matrices. | 11th Aug 1934 | Box 87 \ 1 scan0091 | |
| Graph comparing the performance of different Bentley radiator matrices, with and without fans, during a hill climb test in France. | 11th Aug 1934 | Box 87 \ 1 scan0092 | |
| Graph comparing bonnet air temperatures for a thermostatically controlled shutter system versus a bypass system at different speeds. | 19th Sep 1934 | Box 87 \ 1 scan0093 | |
| Comparative test document detailing engine and air temperatures for vehicles fitted with a grille versus radiator shutters. | 19th Sep 1934 | Box 87 \ 1 scan0094 | |
| Analysis with calculations for the effect of altitude on a standard radiator's 'air temp to boil' figure. | 24th Sep 1934 | Box 87 \ 1 scan0095 | |
| Page from a report with formulas for calculating boiling points at different altitudes. | 24th Sep 1934 | Box 87 \ 1 scan0096 | |
| Graph showing the variation of the boiling point of water, air temperature, and relative air density with altitude. | 24th Sep 1934 | Box 87 \ 1 scan0097 | |
| Graph showing the sea level air temperatures required for boiling to occur at various altitudes. | 24th Sep 1934 | Box 87 \ 1 scan0098 | |
| Graph showing the variation of air temperature required to boil radiator fluid against altitude. | 26th Sep 1934 | Box 87 \ 1 scan0099 | |
| The water capacities of cooling systems for the Phantom II, 20/25 HP, and Standard Bentley models. | 26th Sep 1934 | Box 87 \ 1 scan0100 | |
| Weight comparison between a Standard Bentley Marston Mark III Matrix and a Marston Mark V Matrix. | 5th Oct 1934 | Box 87 \ 1 scan0101 | |
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