| Description | Date | Identifier | |
| Four-wheel brakes, detailing faults found during testing in France. | 16th Jun 1924 | Box 73 \ 3 scan0078 | |
| Page 2 of an experimental report detailing modifications to brake drums and noting issues with water boiling and steering wobble. | 16th Jun 1924 | Box 73 \ 3 scan0079 | |
| The performance, wear, and issues with four-wheel brake systems. | 16th Jun 1924 | Box 73 \ 3 scan0080 | |
| Decision to turn flanges off front brake drums and the subsequent balancing procedure for the 40/50 HP chassis. | 17th Jun 1924 | Box 73 \ 3 scan0081 | |
| Introduction of four-wheel brakes, including the creation of an instruction leaflet, driver warnings, and training recommendations. | 17th Jun 1924 | Box 73 \ 3 scan0082 | |
| Complaint of grease leaking from front hubs onto the four-wheel brakes. | 18th Jun 1924 | Box 73 \ 3 scan0083 | |
| Instruction on the correct method for greasing front hubs on cars fitted with four-wheel brakes. | 8th Jun 1924 | Box 73 \ 3 scan0084 | |
| Recommendation against producing certain four-wheel brake levers in large numbers until more experience is gained. | 18th Jun 1924 | Box 73 \ 3 scan0085 | |
| Centre of twisting of the axle during a test with a torsional friction damper and four-wheel brakes. | 18th Jun 1924 | Box 73 \ 3 scan0086 | |
| Loan of an experimental car to Mr. Southern for brake testing. | 19th Jun 1924 | Box 73 \ 3 scan0087 | |
| Noise issues from servo gears within the four-wheel brake system. | 19th Jun 1924 | Box 73 \ 3 scan0088 | |
| Issues with brake pedal pressure and reduction ratios. | 19th Jun 1924 | Box 73 \ 3 scan0089 | |
| Explaining the operation and safety characteristics of the four-wheel braking system. | 9th Jun 1924 | Box 73 \ 3 scan0090 | |
| Continuation of a document providing advice on proper braking techniques when cornering. | 21th Jun 1924 | Box 73 \ 3 scan0091 | |
| Secret memorandum enquiring about testing an oil catcher for four-wheel brakes. | 21th Jun 1924 | Box 73 \ 3 scan0092 | |
| The omission of an oil catcher for the four-wheel brake system and a related instruction about hub grease. | 24th Jun 1924 | Box 73 \ 3 scan0093 | |
| Instruction to experimentally heat-treat front brake drums on E.A.C. II & E.A.C. III cars to a specific Brinell hardness. | 23th Jun 1924 | Box 73 \ 3 scan0094 | |
| Simplification of an adopted brake scheme by removing a trip from the countershaft. | 24th Jun 1924 | Box 73 \ 3 scan0095 | |
| Front wheel brake drums be made with a higher Brinell hardness. | 25th Jun 1924 | Box 73 \ 3 scan0096 | |
| Secret memo regarding an overlooked oil catcher scheme for front hubs to be fitted to all cars to resolve brake troubles. | 25th Jun 1924 | Box 73 \ 3 scan0097 | |
| Brake and steering tests conducted in France on two vehicles. | 26th Jun 1924 | Box 73 \ 3 scan0098 | |
| 4-wheel brake instructions, servo output adjustments, and steering wobble issues. | 26th Jun 1924 | Box 73 \ 3 scan0099 | |
| Secret memo detailing modifications to the front brake drums and front equaliser lever. | 27th Jun 1924 | Box 73 \ 3 scan0100 | |
| Secret memo discussing issues with brake rope stretching in four-wheel brake systems and a recommendation to pre-stretch them. | 30th Jun 1924 | Box 73 \ 3 scan0101 | |
| From R. to H.S. discussing the successful development of quiet gears for the servo drive. | 30th Jun 1924 | Box 73 \ 3 scan0102 | |
| Ideal braking distribution for 4-wheel brakes. | 30th Jun 1924 | Box 73 \ 3 scan0103 | |
| Adoption of new leather covers for rear brake adjustments. | 1st Jul 1924 | Box 73 \ 3 scan0104 | |
| Secret memo concerning attached information on a four-wheel brake system. | 9th Jul 1924 | Box 73 \ 3 scan0105 | |
| The advantages of the four-wheel semi-servo brake system. | 1st Jul 1924 | Box 73 \ 3 scan0106 | |
| Typed memorandum discussing the 'lag' in servo braking systems and the advantage of bidirectional operation. | 8th Jul 1924 | Box 73 \ 3 scan0107 | |
| Continued description of the car's braking system, its proportions, and the plate-type servo mechanism. | 1st Jul 1924 | Box 73 \ 3 scan0108 | |
| Adjustment instructions for the four-wheel braking system. | 8th Jul 1924 | Box 73 \ 3 scan0109 | |
| Instructions for the adjustment of servo-operated front brakes, including clearance values and testing procedures. | 1st Jul 1924 | Box 73 \ 3 scan0110 | |
| Instructions for checking and adjusting brake and servo components. | 1st Jul 1924 | Box 73 \ 3 scan0111 | |
| Instructions for checking and adjusting brake pedal and servo clearances. | 1st Jul 1924 | Box 73 \ 3 scan0112 | |
| Instructions for setting up and adjusting the four-wheel brake system. | 8th Jul 1924 | Box 73 \ 3 scan0113 | |
| Instructions for brake adjustment, bedding, and clearance checks. | 1st Jul 1924 | Box 73 \ 3 scan0114 | |
| Instructions for setting up and adjusting brake operating levers, pull ropes, and related components. | 1st Jul 1924 | Box 73 \ 3 scan0115 | |
| Instructions for setting up rear brakes, pull ropes, and servo mechanisms, with specific clearances. | 8th Jul 1924 | Box 73 \ 3 scan0116 | |
| Instructions on the function and adjustment of a servo mechanism, its components, and lubrication. | 8th Jul 1924 | Box 73 \ 3 scan0117 | |
| Instructions for adjusting brake and servo systems, including clearances, pedal movement, and lever settings. | 1st Jul 1924 | Box 73 \ 3 scan0118 | |
| Confidential report on the dynamics and potential variations of the four-wheel braking system, focusing on effort distribution and the effects of maximum braking on the front axle. | 1st Jul 1924 | Box 73 \ 3 scan0119 | |
| The characteristics and operation of the semi-servo braking system. | 1st Jul 1924 | Box 73 \ 3 scan0120 | |
| Page of instructions and observations regarding brake servo efficiency and fault diagnosis. | 1st Jul 1924 | Box 73 \ 3 scan0121 | |
| Technical note on troubleshooting brake pulling, front axle fitting, and the principles of front braking. | 3rd Jul 1924 | Box 73 \ 3 scan0122 | |
| Description of the four-wheel braking system. | 9th Jul 1924 | Box 73 \ 3 scan0123 | |
| The operation of an improved semi-servo four-wheel braking system. | 9th Jul 1924 | Box 73 \ 3 scan0124 | |
| Detailed explanation of a servo-assisted braking system's operation, equalization, and adjustment. | 9th Jul 1924 | Box 73 \ 3 scan0125 | |
| The procedure and apparatus for testing servo efficiency. | 9th Jul 1924 | Box 73 \ 3 scan0126 | |
| Continued instructions on testing servo efficiency, including warnings about correct procedure. | 9th Jul 1924 | Box 73 \ 3 scan0127 | |
| Instructions for drivers on the correct use of the new four-wheel brake system. | 1st Jul 1924 | Box 73 \ 3 scan0128 | |
| The principles of braking, front wheel skids, and safe driving techniques. | 1st Jul 1924 | Box 73 \ 3 scan0129 | |
| Instructions on braking techniques for cars with four-wheel brakes, including driving in snow and ice. | 8th Jul 1924 | Box 73 \ 3 scan0130 | |
| Confidential document discussing the dynamics and variations of a four-wheel braking system. | 1st Jul 1924 | Box 73 \ 3 scan0131 | |
| Explanation of the semi-servo braking system's characteristics and handling implications for drivers. | 1st Jul 1924 | Box 73 \ 3 scan0132 | |
| Page discussing brake servo operation, fault diagnosis, and variations in pedal pressure. | 1st Jul 1924 | Box 73 \ 3 scan0133 | |
| Guide for diagnosing and correcting steering pull caused by imbalanced braking and issues with front axle components. | 1st Jul 1924 | Box 73 \ 3 scan0134 | |
| Notes on the advantages of the semi-servo four-wheel brake system over other known systems. | 1st Jul 1924 | Box 73 \ 3 scan0135 | |
| Servo braking lag and its effectiveness and safety in both forward and reverse directions. | 1st Jul 1924 | Box 73 \ 3 scan0136 | |
| The characteristics and performance of the braking and servo system. | 8th Jul 1924 | Box 73 \ 3 scan0137 | |
| Instructions for the adjustment of the four-wheel braking system. | 8th Jul 1924 | Box 73 \ 3 scan0138 | |
| Instructions for the adjustment of servo-operated front brakes. | 8th Jul 1924 | Box 73 \ 3 scan0139 | |
| Instructions for checking and adjusting brake system clearances and the servo unit. | 8th Jul 1924 | Box 73 \ 3 scan0140 | |
| Instructions for checking and adjusting brake pedal, servo, and cam clearances. | 8th Jul 1924 | Box 73 \ 3 scan0141 | |
| Guide on the adjustment procedure for the four-wheel braking system. | 8th Jul 1924 | Box 73 \ 3 scan0142 | |
| Instructions for adjusting and checking servo-operated front brakes. | 1st Jul 1924 | Box 73 \ 3 scan0143 | |
| Instructions for checking brake lever movements and adjusting the servo. | 8th Jul 1924 | Box 73 \ 3 scan0144 | |
| Instructions on checking and adjusting clearances for serrations, cams, servo, and the pedal return mechanism. | 1st Jul 1924 | Box 73 \ 3 scan0145 | |
| Instructions for setting up and adjusting the four-wheel brake system. | 8th Jul 1924 | Box 73 \ 3 scan0146 | |
| Instructions for serrated adjustment, toggles, and bedding of brakes and levers. | 8th Jul 1924 | Box 73 \ 3 scan0147 | |
| Instructions for the setup and adjustment of brake operating levers and pull ropes. | 8th Jul 1924 | Box 73 \ 3 scan0148 | |
| Instructions for the setup and adjustment of rear brakes and the servo system. | 8th Jul 1924 | Box 73 \ 3 scan0149 | |
| Instructions for the operation, lubrication, and adjustment of a servo mechanism, including details on stops and friction linings. | 8th Jul 1924 | Box 73 \ 3 scan0150 | |
| Instructions for adjusting brake system components, including clearances, pedal movement, and lever positions. | 8th Jul 1924 | Box 73 \ 3 scan0151 | |
| The advantages of the four-wheel semi-servo brake system over other systems. | 8th Jul 1924 | Box 73 \ 3 scan0152 | |
| The operation of the servo braking system, its 'lag', and the advantages of its bidirectional functionality. | 8th Jul 1924 | Box 73 \ 3 scan0153 | |
| Description of the servo-assisted braking system, detailing its proportional operation and the advantages of the plate-type servo. | 8th Jul 1924 | Box 73 \ 3 scan0154 | |
| Instructions for drivers on the proper use of the four-wheel brake system. | 8th Jul 1924 | Box 73 \ 3 scan0155 | |
| The dynamics of braking, front-wheel skids, and vehicle control, especially when cornering. | 8th Jul 1924 | Box 73 \ 3 scan0156 | |
| Instructions on braking techniques for cars with four-wheel brakes, including driving in snow and fitting chains. | 8th Jul 1924 | Box 73 \ 3 scan0157 | |
| Description of the four-wheel braking system. | 9th Jul 1924 | Box 73 \ 3 scan0158 | |
| Page 2 of a description of an improved semi-servo four-wheel braking system and its operation. | 9th Jul 1924 | Box 73 \ 3 scan0159 | |
| Description of the operation and adjustment of a servo-assisted braking system. | 9th Jul 1924 | Box 73 \ 3 scan0160 | |
| Description of the four-wheel braking system, including the servo mechanism. | 9th Jul 1924 | Box 73 \ 3 scan0161 | |
| Technical description of the operation of the four-wheel semi-servo brake system. | 9th Jul 1924 | Box 73 \ 3 scan0162 | |
| Description of the operation of a vehicle's braking system, including the servo and equaliser mechanisms. | 9th Jul 1924 | Box 73 \ 3 scan0163 | |
| The dispatch of blueprints for the four-wheel brake system. | 10th Jul 1924 | Box 73 \ 3 scan0164 | |
| Telephone message requesting to test a car with modified front braking and springs. | 11th Jul 1924 | Box 73 \ 3 scan0165 | |
| Attachment of 6 blueprints to notes on 'POSSIBLE VARIATION' for 4-wheel brakes. | 14th Jul 1924 | Box 73 \ 3 scan0166 | |
| Preliminary test and inspection findings for the 40/50 model's front wheel brakes. | 15th Jul 1924 | Box 73 \ 3 scan0167 | |
| List of queries and issues regarding vehicle components including magneto wiring, suspension, speedometer, brakes, and steering. | 15th Jul 1924 | Box 73 \ 3 scan0168 | |
| Confidential memo introducing notes on the adopted four-wheel brake system. | 16th Jul 1924 | Box 73 \ 3 scan0169 | |
| Experiments and implications related to fitting four-wheel brakes, focusing on spring specifications and production. | 7th Jul 1924 | Box 73 \ 3 scan0170 | |
| Trade-offs between adopting front-wheel brakes and maintaining the car's suspension comfort. | 1st Jul 1924 | Box 73 \ 3 scan0171 | |
| Secret memo from CJ to R concerning the adoption of front wheel brakes and the necessity of advancing radius rod control. | 17th Jul 1924 | Box 73 \ 3 scan0172 | |
| Faults and recommendations for the 40/50 HP front wheel brakes and associated components. | 17th Jul 1924 | Box 73 \ 3 scan0173 | |
| List of suggested modifications and concerns regarding brake lubrication, petrol pipe support, and wiring placement. | 7th Jul 1924 | Box 73 \ 3 scan0174 | |
| Testing 12% stiffer springs and the methodology of comparing car axles for ride quality. | 8th Jul 1924 | Box 73 \ 3 scan0175 | |
| 10,000 miles test in France on an adopted scheme of brakes. | 18th Jul 1924 | Box 73 \ 3 scan0176 | |
| Front spring failures, brake performance, and steering issues on the 40/50 HP car. | 20th Mar 1924 | Box 73 \ 3 scan0177 | |
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