| Description | Date | Identifier | |
| Telegram from Johnson requesting urgent test results for a fourteen-tooth axle compared to others at Brooklands. | 13th Sep 1922 | Box 29 \ 3 Scan106 | |
| Confirming a telephone message regarding petrol consumption tests at Brooklands, focusing on different axle and compression ratios. | 15th Sep 1922 | Box 29 \ 3 Scan107 | |
| Telephone message regarding Brooklands test results for petrol consumption with different axles and compression levels. | 15th Sep 1922 | Box 29 \ 3 Scan108 | |
| Fuel consumption tests for the 1.EX car, comparing different axle and compression configurations. | 16th Sep 1922 | Box 29 \ 3 Scan109 | |
| Table of comparative tests of petrol consumptions taken on Brooklands. | 18th Sep 1922 | Box 29 \ 3 Scan110 | |
| Engine power targets, carburetter improvements, and chassis testing for the Hawk Northcliffe project. | 18th Sep 1922 | Box 29 \ 3 Scan111 | |
| Telegram requesting the results of a fourteen-tooth axle test at Brooklands. | 22th Sep 1913 | Box 29 \ 3 Scan112 | |
| Maximum speed of the 20 HP car, the possibility of a sporting model, and a comparison to Bentley. | 9th Jan 1923 | Box 29 \ 3 Scan113 | |
| Speed test of the 4-Goshawk-11 at Brooklands, diagnosing and fixing a pre-ignition issue. | 1st Aug 1922 | Box 29 \ 3 Scan114 | |
| Performance summary from Brooklands for a 6-Goshawk-II, detailing speed work and hill climb results. | 22th Aug 1923 | Box 29 \ 3 Scan115 | |
| Radiator tests for a Goshawk-11 engine, comparing small and large radiator performance. | 23th Aug 1923 | Box 29 \ 3 Scan116 | |
| Secret memo chasing a response about potential new engine failure points and lamenting a decline in the experimental department's spirit. | 7th Jan 1924 | Box 29 \ 3 Scan117 | |
| Faults found during the road testing of the EAC-l engine. | 10th Jan 1924 | Box 29 \ 3 Scan118 | |
| Typed memo listing vehicle faults and defending the Experimental Department's critical testing procedures. | 10th Jan 1924 | Box 29 \ 3 Scan119 | |
| Page from a memorandum defending a critical approach during experimental testing. | 1st Feb 1924 | Box 29 \ 3 Scan120 | |
| Request to borrow a Hispano-Suiza 'Type Boulogne' car for performance and acceleration testing at Brooklands. | 1st Feb 1924 | Box 29 \ 3 Scan121 | |
| Suggesting the use of the Brooklands track for safer and more exact testing of car speed and acceleration. | 13th Feb 1924 | Box 29 \ 3 Scan122 | |
| Explaining the concept of critical atmospheric temperature for engine cooling system tests at Brooklands. | 29th Aug 1925 | Box 29 \ 3 Scan123 | |
| Tests conducted at Brooklands on a 98-NK Barker Open Touring 'V' Series car. | 1st Jul 1925 | Box 29 \ 3 Scan124 | |
| Performance test results table showing speed and lap times under different car configurations. | 1st Jul 1925 | Box 29 \ 3 Scan125 | |
| Dynamometer curve data for chassis 98-NK before the Brooklands test. | 25th Sep 1924 | Box 29 \ 3 Scan126 | |
| Car cooling tests conducted at Brooklands, focusing on ventilation and fan efficiency. | 25th Sep 1924 | Box 29 \ 3 Scan127 | |
| The effects of fan drive and radiator shutters on radiator temperature at high speeds. | 8th Jul 1925 | Box 29 \ 3 Scan128 | |
| Vehicle performance tests conducted at Brooklands, including temperature, hill starts, braking, and steering. | 8th Jul 1925 | Box 29 \ 3 Scan129 | |
| Clutch spinning and acceleration performance tests. | 1st Aug 1925 | Box 29 \ 3 Scan130 | |
| Tests conducted on a 'V' series car at the Brooklands track. | 1st Aug 1925 | Box 29 \ 3 Scan131 | |
| Car cooling tests conducted at Brooklands, focusing on ventilation and fan efficiency. | 8th Jul 1925 | Box 29 \ 3 Scan132 | |
| Fan drive and radiator shutter performance on the engine cooling system. | 1st Jul 1925 | Box 29 \ 3 Scan133 | |
| The performance of a Phantom car at Brooklands race track. | 12th Oct 1925 | Box 29 \ 3 Scan134 | |
| E.A.C. performance tests with associated graphs for a New Phantom. | 12th Oct 1925 | Box 29 \ 3 Scan135 | |
| Comparing the performance of a Phantom car against a Silver Ghost, focusing on carburation and windage. | 12th Oct 1925 | Box 29 \ 3 Scan136 | |
| Performance test results for a 6 G II Open Touring vehicle, showing acceleration, tractive resistance, and radiator efficiency. | 1st Aug 1923 | Box 29 \ 3 Scan137 | |
| The preliminary results of a Brooklands test on a high compression Phantom short chassis fitted with a Barker sports body. | 17th Nov 1925 | Box 29 \ 3 Scan138 | |
| Series of performance graphs comparing tractive resistance, acceleration, horsepower, and efficiency for two car models. | 26th Feb 1923 | Box 29 \ 3 Scan139 | |
| Performance report from Brooklands comparing different car configurations, with lap times and a brake horsepower vs engine RPM graph. | 1st Nov 1925 | Box 29 \ 3 Scan140 | |
| Performance test graph and data sheet from Brooklands comparing different car configurations and their lap speeds. | 1st Nov 1925 | Box 29 \ 3 Scan141 | |
| Stamped document back or cover sheet from Derby. | 24th Nov 1925 | Box 29 \ 3 Scan142 | |
| Factors affecting maximum vehicle speed, with results from tests at Brooklands. | 7th Nov 1925 | Box 29 \ 3 Scan143 | |
| Comparative car speeds on Brooklands and a proposal for a new test. | 24th Nov 1925 | Box 29 \ 3 Scan144 | |
| Difficulties with cooling system tests and proposing new methods for radiator comparisons. | 25th Nov 1924 | Box 29 \ 3 Scan145 | |
| Radiator cooling efficiency tests, referencing Newton's Laws of Cooling and Method 'B'. | 25th Nov 1924 | Box 29 \ 3 Scan146 | |
| Continued report page detailing the methodology for testing radiator efficiency under specific conditions. | 25th Nov 1924 | Box 29 \ 3 Scan147 | |
| Analysis of radiator water temperature and the critical atmospheric boiling point. | 25th Nov 1924 | Box 29 \ 3 Scan148 | |
| The performance of the 10-EX car on the Brooklands track. | 30th Nov 1925 | Box 29 \ 3 Scan149 | |
| Windage and acceleration tests of the New Phantom (10-EX car) at Brooklands. | 30th Nov 1925 | Box 29 \ 3 Scan150 | |
| Analyzing the performance of a sports car body, comparing HP curves and acceleration against a standard Phantom. | 30th Nov 1925 | Box 29 \ 3 Scan151 | |
| Car performance relating to axle ratios and engine compression. | 30th Nov 1925 | Box 29 \ 3 Scan152 | |
| The performance of the Phantom, focusing on HP curve and brake efficiency compared to other models. | 30th Nov 1925 | Box 29 \ 3 Scan153 | |
| Braking test data for a Phantom, used as a defence against a dangerous driving charge. | 12th May 1925 | Box 29 \ 3 Scan154 | |
| Interest in stopping distances following Mr. Minchin winning a legal case. | 10th Dec 1925 | Box 29 \ 3 Scan155 | |
| Arrangements for testing the 10-EX car at Brooklands and concealing its modified engine. | 26th Aug 1927 | Box 29 \ 3 Scan156 | |
| Arrangements for testing a Packard straight-8 and an experimental car at Brooklands track. | 29th Aug 1927 | Box 29 \ 3 Scan157 | |
| Speedometer reading 6% slow on a trials car (46-PK) due to temperature error, recommending a duralumin cup. | 6th Sep 1927 | Box 29 \ 3 Scan158 | |
| The Brooklands performance tests of the 10-EX car, comparing it to a standard 40/50 touring car. | 1st Sep 1927 | Box 29 \ 3 Scan159 | |
| Vehicle performance tests, results, and proposed future modifications for further testing. | 1st Sep 1927 | Box 29 \ 3 Scan160 | |
| General remarks on the performance of the 10-EX car, focusing on track handling, steering, and the autovac system. | 1st Sep 1927 | Box 29 \ 3 Scan161 | |
| Performance comparison between a Sports Phantom 10-EX and a Standard Touring Phantom 46-PK. | 1st Sep 1927 | Box 29 \ 3 Scan162 | |
| Table outlining potential speed increases from various car alterations. | 27th Oct 1927 | Box 29 \ 3 Scan163 | |
| Very faint, almost entirely illegible document page marked with a red 'Limited Room, Derby' stamp. | 27th Oct 1927 | Box 29 \ 3 Scan164 | |
| Table of speed test results in m.p.h. for a car under various altered conditions compared to a standard configuration. | 7th Sep 1927 | Box 29 \ 3 Scan165 | |
| Bar chart detailing the gain or loss in lap speed under different aerodynamic and mechanical configurations for the 10 E.X. model. | 7th Sep 1927 | Box 29 \ 3 Scan166 | |
| Performance graph for a 10 EX aluminium engine with a 4.95-1 compression ratio, plotting BHP against RPM and MPH. | 7th Sep 1927 | Box 29 \ 3 Scan167 | |
| Chart showing the gain or loss in speed from altering a vehicle's standard configuration during Brooklands speed tests. | 8th Sep 1927 | Box 29 \ 3 Scan168 | |
| The reverse of a document showing a date stamp from the print room. | 13th Sep 1927 | Box 29 \ 3 Scan169 | |
| Temperature tests conducted at Brooklands to determine the effect of various car alterations on radiator, seat, and oil temperatures. | 12th Sep 1927 | Box 29 \ 3 Scan170 | |
| Report comparing the cooling performance of the 10-EX model against a standard car, with conclusions on bonnet ventilation. | 12th Sep 1927 | Box 29 \ 3 Scan171 | |
| Summary table of temperature tests conducted at Brooklands on the 10-EX car under various conditions. | 13th Sep 1927 | Box 29 \ 3 Scan172 | |
| Telegram requesting a horse power curve of an engine for a report. | 13th Sep 1927 | Box 29 \ 3 Scan173 | |
| Test report from Brooklands on axle and carburettor performance. | 13th Sep 1927 | Box 29 \ 3 Scan174 | |
| Test report page summarising issues with crankcase bolts, valve gear, and the performance of balloon tyres. | 13th Sep 1927 | Box 29 \ 3 Scan175 | |
| Analysis of vehicle modifications and their impact on maximum speed. | 8th Sep 1927 | Box 29 \ 3 Scan176 | |
| Brooklands test results showing mean lap speeds with various car alterations. | 8th Sep 1927 | Box 29 \ 3 Scan177 | |
| Querying temperature tests at Brooklands, bonnet shutter configuration, engine overheating, and driver cooling. | 14th Sep 1927 | Box 29 \ 3 Scan178 | |
| Methods for increasing high-speed performance, focusing on body modifications for the Phantom model. | 27th Oct 1927 | Box 29 \ 3 Scan179 | |
| Series of five performance graphs from Brooklands tests, detailing horsepower, braking, acceleration, and resistance for chassis 98 N.K. | 14th Oct 1925 | Box 29 \ 3 Scan180 | |
| Appearance of the 10-EX sports car, noting its front-heavy look and the effect of the louvred bonnet. | 4th Nov 1927 | Box 29 \ 3 Scan181 | |
| Performance comparison report on the 'Continental' Phantom against the standard car model. | 23th Feb 1928 | Box 29 \ 3 Scan182 | |
| Report discussing sports car performance, customer appeal, and comparison with competitor vehicles. | 23th Feb 1928 | Box 29 \ 3 Scan183 | |
| Performance comparison of the Continental Phantom against competitors and a discussion on its design. | 23th Feb 1928 | Box 29 \ 3 Scan184 | |
| Advantages of a new rear-end design for fast cars, with specific reference to the Continental Phantom. | 23th Feb 1928 | Box 29 \ 3 Scan185 | |
| Graph comparing the performance characteristics (BHP and BMEP) of Standard and Sports Phantom engines. | 23th Feb 1928 | Box 29 \ 3 Scan186 | |
| Blank document page marked with a receiving date stamp from the Derby office. | 23th Feb 1928 | Box 29 \ 3 Scan187 | |
| Graph comparing car speed against time for different vehicle models and gears. | 23th Feb 1928 | Box 29 \ 3 Scan188 | |
| Graph comparing the acceleration of the Standard and Continental Phantom models. | 23th Feb 1928 | Box 29 \ 3 Scan189 | |
| With a purple date stamp; the main text is illegible. | 23th Feb 1928 | Box 29 \ 3 Scan190 | |
| Performance curves from tests conducted on the 10-EX car at Brooklands. | 12th Mar 1929 | Box 29 \ 3 Scan191 | |
| The Phantom II's performance at Brooklands, discussing potential gearing changes and ride quality. | 11th Oct 1929 | Box 29 \ 3 Scan192 | |
| Querying an arrangement with Brooklands management for lower-cost track usage for high-speed car testing. | 23th May 1930 | Box 29 \ 3 Scan193 | |
| Lack of special arrangements or terms for using the Brooklands track. | 2nd Jun 1930 | Box 29 \ 3 Scan194 | |
| Test conditions and notes for a vehicle at Brooklands, covering carburettor, fuel, steering, and spark plug configurations. | 2nd Jun 1930 | Box 29 \ 3 Scan195 | |
| Temperature tests at Brooklands detailing insufficient radiator cooling and petrol supply issues. | 11th Jun 1930 | Box 29 \ 3 Scan196 | |
| Acceleration test results comparing a standard carburettor with an air silencer carburettor. | 4th Jun 1930 | Box 29 \ 3 Scan197 | |
| Steering test results from Brooklands comparing different tyre types and pressures. | 4th Jun 1930 | Box 29 \ 3 Scan198 | |
| Test report on the performance of Dunlop Silent Tyres at various pressures. | 25th Jun 1930 | Box 29 \ 3 Scan199 | |
| Cooling system tests conducted at Brooklands on the 19-EX, 18-EX, and Phantom II cars. | 25th Jun 1930 | Box 29 \ 3 Scan200 | |
| Engine cooling tests, comparing different ventilation methods and shutter configurations on a Phantom II. | 25th Jun 1930 | Box 29 \ 3 Scan201 | |
| Engine cooling tests, focusing on ventilated bonnets, radiator performance, and car comparisons for hot climates. | 25th Jun 1930 | Box 29 \ 3 Scan202 | |
| Test report page detailing temperature, ignition, and fuel supply issues, along with maximum lap speeds for experimental cars. | 25th Jun 1930 | Box 29 \ 3 Scan203 | |
| The inferior performance of the 18-EX car, detailing causes and test results against the 19-EX model. | 25th Jun 1930 | Box 29 \ 3 Scan204 | |
| Report page discussing engine cooling tests, including fan belt tension, water circulation, and the American Phantom II. | 25th Jun 1930 | Box 29 \ 3 Scan205 | |
| | | | |
