| Description | Date | Identifier | |
| Letter from the Brooklands Automobile Racing Club concerning the progress of track repairs and circuit availability. | 10th Dec 1932 | Box 155 \ 1 scan0053 | |
| Letter to the Clerk of the Course at Brooklands Motor Course regarding arranging a clear passage around the track. | 12th Dec 1932 | Box 155 \ 1 scan0054 | |
| Request from the Sales Department for acceleration tests to be performed on the Phantom II Continental chassis. | 26th Jan 1933 | Box 155 \ 1 scan0055 | |
| Letter to Mr. Percy Bradley at Brooklands Motor Track regarding track availability for car testing. | 30th Jan 1933 | Box 155 \ 1 scan0056 | |
| Letter from Brooklands Automobile Racing Club confirming the outside circuit is clear for use. | 31th Jan 1933 | Box 155 \ 1 scan0057 | |
| Performance test data from Brooklands Track for a Bensport Chassis F.B III, showing acceleration and speed tests. | 2nd Feb 1933 | Box 155 \ 1 scan0058 | |
| Results of a vehicle test on the Brooklands track. | 5th Feb 1933 | Box 155 \ 1 scan0059 | |
| Oil leaks from the clutch pit and a comparison of exhaust system losses with earlier tuning. | 6th Feb 1933 | Box 155 \ 1 scan0060 | |
| Steering characteristics and pivot inclination tests for a new axle. | 22th Sep 1926 | Box 155 \ 1 scan0061 | |
| Report page discussing steering tests on an altered standard axle, with an attached blueprint sketch of transversally raked pivots. | 22th Sep 1926 | Box 155 \ 1 scan0062 | |
| Tests on the effect of transverse rake and pivot inclination on steering effort for a 20 HP axle. | 22th Sep 1926 | Box 155 \ 1 scan0063 | |
| Comparing the effect of transverse pivot inclination on steering effort for different axle types. | 22th Sep 1926 | Box 155 \ 1 scan0064 | |
| Comparison of five different axle and pivot configurations, ordered by steering heaviness. | 28th Jan 1933 | Box 155 \ 1 scan0065 | |
| Performance curves for a Bensport J.I. Unit C.9 engine, testing various exhaust system modifications. | 28th Jan 1933 | Box 155 \ 1 scan0066 | |
| Performance graph showing BHP and BMEP against RPM for a specific engine configuration with two different timing settings. | 28th Jan 1933 | Box 155 \ 1 scan0067 | |
| High-speed performance testing of two Continental Phantom II cars at Brooklands track. | 3rd Mar 1933 | Box 155 \ 1 scan0068 | |
| The speed and acceleration trials for Chassis No. 20 MY at Brooklands. | 3rd Mar 1933 | Box 155 \ 1 scan0069 | |
| Arranging a car test at Brooklands to compare a 4-litre Delage or an Essex Terraplane with a Bentley. | 17th Mar 1933 | Box 155 \ 1 scan0070 | |
| Meeting at Brooklands to test competitor cars including Talbot, Bugatti, and Alfa Romeo. | 5th Apr 1933 | Box 155 \ 1 scan0071 | |
| Meeting at Brooklands to test cars, mentioning an Alfa Romeo and whether to show a Bentley to Mr. Lionel Martin. | 12th Apr 1933 | Box 155 \ 1 scan0072 | |
| Letter to Brooklands Track regarding two track tickets. | 12th Apr 1933 | Box 155 \ 1 scan0073 | |
| Meeting at Brooklands, the Monte Carlo Races, and the potential production of a 2.3 litre sports car similar to an Alfa Romeo. | 20th Apr 1933 | Box 155 \ 1 scan0074 | |
| Arranging a car meeting at Brooklands and expressing interest in a Speed 20 Alvis. | 21th Apr 1933 | Box 155 \ 1 scan0075 | |
| Car testing at Brooklands, detailing performance times and engine component failures due to oil shortage. | 27th Apr 1933 | Box 155 \ 1 scan0076 | |
| Required modifications to the oil feed system for rocker shafts and an issue with a water drain tap. | 27th Apr 1933 | Box 155 \ 1 scan0077 | |
| Correspondence regarding the postponement of a trial at Brooklands due to practice for the International Trophy Race. | 1st May 1933 | Box 155 \ 1 scan0078 | |
| Confirming a meeting for Friday the 12th at 11 a.m. on the track and returning an attached letter. | 2nd May 1933 | Box 155 \ 1 scan0079 | |
| Arranging a meeting to inspect various competitor cars including Alfa, Bugatti, Talbot, and Alvis. | 4th May 1933 | Box 155 \ 1 scan0080 | |
| Short typed memo confirming a rendezvous time and date. | 5th May 1933 | Box 155 \ 1 scan0081 | |
| Brooklands test results comparing two Bentley cars against a Talbot and an Alvis for speed and acceleration. | 16th May 1933 | Box 155 \ 1 scan0082 | |
| Speed tests for Chassis 2.B.IV on the Brooklands track with various engine and body configurations. | 17th May 1933 | Box 155 \ 1 scan0083 | |
| Acceleration tests comparing single and double hot spot feeds to address 'flat spot' issues, with notes on air silencer and wing design. | 17th May 1933 | Box 155 \ 1 scan0084 | |
| Test report detailing engine oil loss, cooling, steering performance, and petrol consumption tests. | 17th May 1933 | Box 155 \ 1 scan0085 | |
| Performance test results for Bentley Chassis 2.B.IV at Brooklands track, including speed, acceleration, and notes on wing design and an oil leak. | 18th May 1933 | Box 155 \ 1 scan0086 | |
| Test report on clutch ventilation, cooling, steering, engine performance, and fuel consumption. | 18th May 1933 | Box 155 \ 1 scan0087 | |
| Brooklands test results comparing J.3. and S.U. carburettors, and water versus air oil coolers. | 23th May 1933 | Box 155 \ 1 scan0088 | |
| Performance comparison notes from two acceleration tests between cars. | 1st Jun 1933 | Box 155 \ 1 scan0089 | |
| Lap speed and time test results from Brooklands with different equipment setups. | 1st Jun 1933 | Box 155 \ 1 scan0090 | |
| Performance test results for three Bentley cars at Brooklands track. | 3rd Jun 1933 | Box 155 \ 1 scan0091 | |
| Testing of a new cut-out and petrol pump performance. | 5th Jun 1935 | Box 155 \ 1 scan0092 | |
| To the Accounts Department regarding unpaid petrol bills for work done at Brooklands track. | 13th Jun 1933 | Box 155 \ 1 scan0093 | |
| Arranging for axle ratio testing of two Bentley cars at the Brooklands track. | 19th Jun 1933 | Box 155 \ 1 scan0094 | |
| Letter to the Clerk of the Course at Brooklands Track regarding a track ticket. | 21th Jun 1933 | Box 155 \ 1 scan0095 | |
| Test report on Bentley cars at Brooklands track, investigating the effects of axle ratios, wings, and exhaust systems on performance. | 23th Jun 1933 | Box 155 \ 1 scan0096 | |
| Summary of comparative tests on car components and their effect on performance, with no mechanical troubles experienced. | 23th Jun 1933 | Box 155 \ 1 scan0097 | |
| Performance graph plotting BHP at the road wheels against engine RPM for a Bentley chassis, including component and timing specifications. | 23th Jun 1933 | Box 155 \ 1 scan0098 | |
| Blueprint detailing an engine performance graph and specifications for a Bentley 4-B IV chassis. | 24th Jun 1933 | Box 155 \ 1 scan0099 | |
| Performance graph and specification sheet for Bentley Chassis 2-B.N. | 26th Jun 1933 | Box 155 \ 1 scan0100 | |
| Arranging a meeting and bypass road tests for a Bentley at Brooklands. | 28th Jun 1933 | Box 155 \ 1 scan0101 | |
| Short typed memo arranging a meeting at Brooklands with Bentley cars. | 29th Jun 1933 | Box 155 \ 1 scan0102 | |
| Maximum speed tests of 3.5 Litre Bentley cars at Brooklands Track. | 4th Jul 1933 | Box 155 \ 1 scan0103 | |
| Maximum speed tests and speedometer accuracy checks for several cars. | 4th Jul 1933 | Box 155 \ 1 scan0104 | |
| Test report on a Bentley petrol feed system conducted at Brooklands. | 16th Sep 1933 | Box 155 \ 1 scan0105 | |
| The Brooklands track test of a 3½ Litre Bentley, chassis B-15-AE. | 29th Sep 1933 | Box 155 \ 1 scan0106 | |
| Letter from the Experimental Department to the Clerk of the Course at Brooklands Track regarding testing availability. | 20th Oct 1933 | Box 155 \ 1 scan0107 | |
| Confirming the specification of a B.6 unit for a Brooklands test car, 1.B.IV. | 21th Oct 1933 | Box 155 \ 1 scan0108 | |
| Letter from Brooklands Automobile Racing Club confirming the track will remain open until November 4th. | 21th Oct 1933 | Box 155 \ 1 scan0109 | |
| Car's performance test, including mileage, consumption, and lap speeds. | 24th Oct 1933 | Box 155 \ 1 scan0110 | |
| Vehicle road test, detailing issues with valve clearance, engine performance data, oil temperatures and a leak from the rocker cover joint. | 25th Oct 1933 | Box 155 \ 1 scan0111 | |
| Dispatch of short and long reach spark plugs for testing and enclosing track tickets. | 25th Oct 1933 | Box 155 \ 1 scan0112 | |
| Despatch of sparking plugs and carburetter needles for testing at Brooklands Track. | 25th Oct 1933 | Box 155 \ 1 scan0113 | |
| Letter to Brooklands Motor Course requesting to run endurance tests on the track. | 26th Oct 1933 | Box 155 \ 1 scan0114 | |
| Reproduced piston failure on a 3 1/2 Litre Bentley during testing at Brooklands. | 26th Oct 1933 | Box 155 \ 1 scan0115 | |
| Letter from Brooklands Automobile Racing Club regarding track availability for testing. | 27th Oct 1933 | Box 155 \ 1 scan0116 | |
| Cause of piston failures in a 3 1/2 Litre Bentley engine, attributing it to an exhaust valve. | 28th Oct 1933 | Box 155 \ 1 scan0117 | |
| Car's performance test, detailing consumption figures, engine smoothness and future test plans. | 30th Oct 1933 | Box 155 \ 1 scan0118 | |
| Letter from Brooklands Automobile Racing Club regarding an employee's membership application. | 31th Oct 1933 | Box 155 \ 1 scan0119 | |
| The particulars of membership for the Brooklands Automobile Racing Club. | 1st Mar 1933 | Box 155 \ 1 scan0120 | |
| Typed report on vehicle mileage and performance testing on both road and track. | 31th Oct 1933 | Box 155 \ 1 scan0121 | |
| Vehicle's road and track test, detailing performance, mechanical failures, and observations. | 1st Nov 1933 | Box 155 \ 1 scan0122 | |
| Speed test results for a streamlined car at Brooklands and on the Towcester Road. | 4th Nov 1933 | Box 155 \ 1 scan0123 | |
| Performance review of a 100 M.P.H. streamlined Bentley car after road and track testing. | 6th Nov 1933 | Box 155 \ 1 scan0124 | |
| Positive results from wind tunnel tests on a streamlined Bentley car. | 7th Nov 1933 | Box 155 \ 1 scan0125 | |
| Performance results of the 100 m.p.h. Bentley Streamline Car and potential body improvements. | 7th Nov 1933 | Box 155 \ 1 scan0126 | |
| Letter to the Clerk of the Course at Brooklands Track inquiring about the availability of the outside circuit for tests. | 9th Mar 1934 | Box 155 \ 1 scan0127 | |
| Letter from Brooklands Automobile Racing Club confirming the availability of the outside circuit for testing. | 10th Mar 1934 | Box 155 \ 1 scan0128 | |
| Carburetter performance tests comparing speed, acceleration, and consumption at Brooklands. | 13th Mar 1934 | Box 155 \ 1 scan0129 | |
| Request to borrow lantern slides or photographs of the 'R' type engine for a presentation on the 'Blue-Bird'. | 20th Mar 1934 | Box 155 \ 1 scan0130 | |
| Letter to Reid Railton regarding twelve lantern slides of the 'R' engine used in the 'Bluebird'. | 21th Mar 1934 | Box 155 \ 1 scan0131 | |
| Index sheet providing descriptions for a series of slides related to engine testing rigs and development. | 18th May 1934 | Box 155 \ 1 scan0132 | |
| Radiator test results for a streamlined Bentley car B23AE at Brooklands. | 18th May 1934 | Box 155 \ 1 scan0133 | |
| Modifications and preparations for radiator tests on the Vulture car at Brooklands. | 4th Jun 1934 | Box 155 \ 1 scan0134 | |
| Requesting a radiator grille be made interchangeable with standard shutters for testing at Brooklands. | 13th Jun 1934 | Box 155 \ 1 scan0135 | |
| Short memo confirming the assumed availability of the Weybridge track for tests. | 25th Jun 1934 | Box 155 \ 1 scan0136 | |
| Telegram received by telephone regarding Whitney Straight's potential kilometre record attempt. | 25th Jun 1932 | Box 155 \ 1 scan0137 | |
| Tests carried out on fans and a Vulture radiator at Brooklands. | 3rd Jul 1934 | Box 155 \ 1 scan0138 | |
| Radiator performance test results at various speeds and throttle settings with louvres open and closed. | 3rd Jul 1934 | Box 155 \ 1 scan0139 | |
| Test results comparing different cooling fans based on maintained water and bonnet air temperatures. | 3rd Jul 1934 | Box 155 \ 1 scan0140 | |
| Conclusions from radiator tests comparing the performance of radiators for the Vulture and Spectre cars. | 3rd Jul 1934 | Box 155 \ 1 scan0141 | |
| Comparison of cooling efficiency and noise levels between different fan designs. | 3rd Jul 1934 | Box 155 \ 1 scan0142 | |
| Graph showing the results of Vulture radiator tests at Brooklands Track. | 26th Jun 1934 | Box 155 \ 1 scan0143 | |
| Graph comparing the performance of different Phantom engine cooling fans at Brooklands track. | 28th Jun 1934 | Box 155 \ 1 scan0144 | |
| Performance test results for vehicle B-35-AE at Brooklands, detailing lap speeds and acceleration times. | 6th Jul 1934 | Box 155 \ 1 scan0145 | |
| Press clipping featuring articles on a streamlined Bentley and a Lagonda drop-head coupe. | 11th Jul 1934 | Box 155 \ 1 scan0146 | |
| The track performance testing of E.R. Hall's car, model B-35-AE, comparing it to a streamlined saloon. | 11th Jul 1934 | Box 155 \ 1 scan0147 | |
| Aerodynamics, acceleration, and wind tunnel tests for improving Bentley competition cars. | 11th Jul 1934 | Box 155 \ 1 scan0148 | |
| Photographic comparison of lap speeds between a Standard Saloon and a streamlined B.23.AE model. | 11th Jul 1934 | Box 155 \ 1 scan0149 | |
| Photograph of E.R. Hall's car with a handwritten note about its lap speed. | 11th Jul 1934 | Box 155 \ 1 scan0150 | |
| Photograph of E.R. Hall's racing car with a handwritten caption. | 28th Jul 1934 | Box 155 \ 1 scan0151 | |
| Letter detailing the results and calculations from wind tunnel tests on a car body. | 28th Jul 1934 | Box 155 \ 1 scan0152 | |
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