| Description | Date | Identifier | |
| Accident involving car 35-PK in Vignoux-sur-Barangeon, France. | 13th Aug 1924 | Box 72 \ 3 scan0084 | |
| Bringing an EAC.11 car for testing, detailing modifications made, and reporting on progress of a new EAC.111 chassis. | 19th Aug 1924 | Box 72 \ 3 scan0085 | |
| Cover note for a report on the torsion of deflection of standard front road springs. | 19th Aug 1924 | Box 72 \ 3 scan0086 | |
| Torsion and oscillation tests conducted on front road springs. | 19th Aug 1924 | Box 72 \ 3 scan0087 | |
| Test report detailing the specifications of different front road springs used for torsional deflection tests. | 19th Aug 1924 | Box 72 \ 3 scan0088 | |
| Data table showing pull and torque values for different degrees of spring twist. | 19th Aug 1924 | Box 72 \ 3 scan0089 | |
| Graph showing the twist (angular deflection) of different front springs under braking torque. | 23th Aug 1924 | Box 72 \ 3 scan0090 | |
| Tests conducted in France on 12½% springs for a 40/50 HP Landaulet. | 23th Aug 1924 | Box 72 \ 3 scan0091 | |
| Testing of Woodhead and Firths springs for cars destined for France. | 25th Aug 1924 | Box 72 \ 3 scan0092 | |
| Confirming a conversation about meeting arrangements, spring testing results, and planning for hot weather car trials. | 25th Aug 1924 | Box 72 \ 3 scan0093 | |
| Production of stronger front springs for the 40/50 HP chassis fitted with four-wheel brakes. | 27th Aug 1924 | Box 72 \ 3 scan0094 | |
| Design and improvement of road springs. | 29th Aug 1924 | Box 72 \ 3 scan0095 | |
| Responding to a previous communication regarding departmental responsibility for the failure of Woodhead springs. | 1st Sep 1924 | Box 72 \ 3 scan0096 | |
| Continued memo strongly resenting an inference about the Experimental Department's capability. | 1st Sep 1924 | Box 72 \ 3 scan0097 | |
| Hand-drawn sketch and notes specifying minimum clearances for the sheath over front springs. | 1st Sep 1924 | Box 72 \ 3 scan0098 | |
| Letter from a supplier regarding spring failures during road trials and the subsequent manufacturing of parts. | 30th Aug 1924 | Box 72 \ 3 scan0099 | |
| Letter from Jonas Woodhead & Sons confirming specifications for front springs on a 40/50 HP chassis. | 30th Aug 1924 | Box 72 \ 3 scan0100 | |
| Meeting with Firths of Sheffield regarding a failure of front axle springs and the potential to source them from Woodheads instead. | 1st Sep 1924 | Box 72 \ 3 scan0101 | |
| Negotiations with suppliers over the manufacture of front springs. | 1st Sep 1924 | Box 72 \ 3 scan0102 | |
| Discussion about a proposed 12-month agreement for the supply of clips and clip plates for front axle springs. | 1st Sep 1924 | Box 72 \ 3 scan0103 | |
| Conference about an accident and the subsequent sourcing and testing of car springs from different suppliers. | 1st Sep 1924 | Box 72 \ 3 scan0104 | |
| Two front springs arriving from France be sent to the Experimental Department. | 2nd Sep 1924 | Box 72 \ 3 scan0105 | |
| Query to the Paris office about the average life of front springs on the standard 40/50 HP car. | 1st Sep 1924 | Box 72 \ 3 scan0106 | |
| Issues with experimental cars, specifically regarding non-standard springs used in trials. | 1st Sep 1924 | Box 72 \ 3 scan0107 | |
| Testing of stiffer springs to prevent top plate failures on cars with front wheel brakes. | 1st Sep 1924 | Box 72 \ 3 scan0108 | |
| The design and testing of front road springs. | 5th Sep 1924 | Box 72 \ 3 scan0109 | |
| Refuting claims of wasted time and money regarding tests on car springing and 4-wheel brakes. | 5th Sep 1924 | Box 72 \ 3 scan0110 | |
| Car spring specifications, comparing stronger springs for speed models against flexible springs for comfort. | 1st Sep 1924 | Box 72 \ 3 scan0111 | |
| Road spring failures during tests in France on 4-wheel brake cars. | 1st Sep 1924 | Box 72 \ 3 scan0112 | |
| Road spring failures and life testing. | 1st Sep 1924 | Box 72 \ 3 scan0113 | |
| Stock and supply issues of front axle springs from different manufacturers. | 8th Sep 1924 | Box 72 \ 3 scan0114 | |
| Outlining two alternative suppliers, Woodheads or Firths, for front springs to avoid a production halt on the 40/50 HP chassis. | 8th Sep 1924 | Box 72 \ 3 scan0115 | |
| Telegram received by telephone requesting the weights of two front springs for an E.A.C. car. | 9th Sep 1924 | Box 72 \ 3 scan0116 | |
| Design and performance of front springs for experimental cars in France. | 9th Sep 1924 | Box 72 \ 3 scan0117 | |
| Improvements and considerations for the vehicle's spring and suspension system. | 10th Sep 1924 | Box 72 \ 3 scan0118 | |
| Meeting with Firths about defective springs and placing an order for replacements. | 10th Sep 1924 | Box 72 \ 3 scan0119 | |
| Bump testing Woodheads 12.5% road springs, detailing failure rates and comparisons. | 11th Sep 1924 | Box 72 \ 3 scan0120 | |
| Communicating the content of two telegrams regarding specifications for front axle springs. | 11th Sep 1924 | Box 72 \ 3 scan0121 | |
| Faults in springs made by Firths and recommending new spring specifications. | 11th Sep 1924 | Box 72 \ 3 scan0122 | |
| Further experiments on road springs, focusing on side load deflection and its impact on spring life. | 12th Sep 1924 | Box 72 \ 3 scan0123 | |
| Standardization and testing of new, stiffer car springs. | 12th Sep 1924 | Box 72 \ 3 scan0124 | |
| From CJ to R concerning a supplier's (Firth's) financial inability to produce sample springs. | 12th Sep 1924 | Box 72 \ 3 scan0125 | |
| Schedule of spring tests comparing different types based on road and bump test failure rates. | 12th Sep 1924 | Box 72 \ 3 scan0126 | |
| Compromise on front spring design, stiffness, and testing. | 13th Sep 1924 | Box 72 \ 3 scan0127 | |
| Investigation into the effect of stress range and plate thickness on the durability of road springs. | 5th Sep 1924 | Box 72 \ 3 scan0128 | |
| Specifications, dimensions, and stress tolerances for front springs. | 16th Sep 1924 | Box 72 \ 3 scan0129 | |
| Clarifying the use of temporary front springs on 'U' series 40/50 HP chassis and outlining required alterations. | 17th Sep 1924 | Box 72 \ 3 scan0130 | |
| New layout for front springs with negative camber and thicker rubber buffers. | 17th Sep 1924 | Box 72 \ 3 scan0131 | |
| Secret memo regarding a conference on the importance of getting cars with six brakes ready for the Olympia Exhibition. | 18th Sep 1924 | Box 72 \ 3 scan0132 | |
| Instruction to order 12.5% stronger front springs with .285' top plates and Woodhead clips. | 18th Sep 1924 | Box 72 \ 3 scan0133 | |
| Urgent requirement for various road springs for experimental and 'Olympia' trials cars. | 9th Sep 1924 | Box 72 \ 3 scan0134 | |
| Bump tests conducted on road springs, detailing fractures. | 1st Sep 1931 | Box 72 \ 3 scan0135 | |
| Comparing the hardness and life of Woodhead and Firth spring leaves. | 12th Jul 1923 | Box 72 \ 3 scan0136 | |
| Analysis of the chemical composition and operational life of six Woodhead front springs under various loads. | 23th Sep 1924 | Box 72 \ 3 scan0137 | |
| Outlining the preparation of car 98-NK for a 10,000-mile test in France, pending the arrival of correct springs. | 23th Sep 1924 | Box 72 \ 3 scan0138 | |
| Collection of springs for chassis 18-NK from Cricklewood. | 26th Sep 1924 | Box 72 \ 3 scan0139 | |
| Tests on Firths 12t springs and brakes, with a summary on induction and oil pipe breakages. | 26th Sep 1924 | Box 72 \ 3 scan0140 | |
| The results of a 10,000-mile test on vehicle 9-PK, focusing on fuel consumption, brake performance, and the exhaust system. | 26th Sep 1924 | Box 72 \ 3 scan0141 | |
| The performance of the exhaust, steering, and engine systems. | 26th Sep 1924 | Box 72 \ 3 scan0142 | |
| Various mechanical failures including oil and induction pipes, piston knock, and suspension issues. | 26th Sep 1924 | Box 72 \ 3 scan0143 | |
| Six specific matters requiring modification. | 26th Sep 1924 | Box 72 \ 3 scan0144 | |
| Urgent need for clips, sheaths, and gaiters to test new Woodhead springs for a Press Demonstration car. | 29th Sep 1924 | Box 72 \ 3 scan0145 | |
| Secret memo suggesting two alternative solutions for exhaust joints that are burning out during tests. | 29th Sep 1924 | Box 72 \ 3 scan0146 | |
| Secret memo regarding the testing of latest type springs and demonstration of 4-wheel brakes on car 48-PK. | 30th Sep 1924 | Box 72 \ 3 scan0147 | |
| Telegram from Basil Johnson regarding the fitting of 'twelve per cent' springs and the fear of a negative press impression. | 1st Oct 1924 | Box 72 \ 3 scan0148 | |
| Telegram received by telephone regarding the fitting of stronger springs for a demonstration. | 1st Oct 1924 | Box 72 \ 3 scan0149 | |
| Urgent need to commence a 10,000-mile spring test in France, pending Mr. Royce's approval. | 1st Oct 1924 | Box 72 \ 3 scan0150 | |
| Secret memo regarding arrangements for testing new car springs in France. | 2nd Oct 1924 | Box 72 \ 3 scan0151 | |
| Testing, approval, and standardization of car springs for specific vehicle models. | 10th Oct 1924 | Box 72 \ 3 scan0152 | |
| Coachwork repairs, modifications, and delivery arrangements for car 48-PK. | 10th Oct 1924 | Box 72 \ 3 scan0153 | |
| Secret and urgent memo discussing spring strength testing for cars intended for touring in France. | 3rd Oct 1924 | Box 72 \ 3 scan0154 | |
| Standardisation of 40/50 HP road springs and fittings. | 10th Oct 1924 | Box 72 \ 3 scan0155 | |
| Criticisms on the springing of a cabriolet, attributing roughness at low speeds to its front and rear springs. | 6th Oct 1924 | Box 72 \ 3 scan0156 | |
| Standardization and stiffness of front springs for the 40/50 HP chassis. | 6th Oct 1924 | Box 72 \ 3 scan0157 | |
| Querying the correct buffer clearance specification for different spring types. | 6th Oct 1924 | Box 72 \ 3 scan0158 | |
| Secret memo regarding the testing of different stiffness car springs in France. | 6th Oct 1924 | Box 72 \ 3 scan0159 | |
| Seeking instructions on the type of springs to be fitted to two cars undergoing testing in France. | 6th Oct 1924 | Box 72 \ 3 scan0160 | |
| Internal memorandum discussing the design and modification of thinleaf type front springs. | 6th Oct 1924 | Box 72 \ 3 scan0161 | |
| Harshness of 25% stiffer road springs fitted to the 40/50 HP model to suit front wheel brakes. | 7th Oct 1924 | Box 72 \ 3 scan0162 | |
| Confirming the decision to use a 20% stiffer spring and referencing issued instructions. | 7th Oct 1924 | Box 72 \ 3 scan0163 | |
| Use of car 48-PK for testing stronger springs on closed cars. | 7th Oct 1924 | Box 72 \ 3 scan0164 | |
| Need to test 12½% and 20% springs under French road conditions before fitting them to cars. | 1st Oct 1924 | Box 72 \ 3 scan0165 | |
| Spring stiffness for press demonstration cars and the experimental car 48-PK. | 10th Oct 1924 | Box 72 \ 3 scan0166 | |
| Road spring tests in France, comparing different makes and stiffnesses. | 1st Oct 1924 | Box 72 \ 3 scan0167 | |
| Bump tests on road springs and proposing a new continuous bending test apparatus. | 10th Oct 1924 | Box 72 \ 3 scan0168 | |
| The comparative testing of Firths and Woodheads road springs in France. | 13th Oct 1924 | Box 72 \ 3 scan0169 | |
| Comparative testing of Firth and Woodhead front springs. | 16th Oct 1924 | Box 72 \ 3 scan0170 | |
| Telegram received by telephone inquiring about the status of front springs being tested. | 17th Oct 1924 | Box 72 \ 3 scan0171 | |
| Telegram received by telephone from Johnson enquiring about production, supply to customers, and vehicle body specifications. | 23th May 1923 | Box 72 \ 3 scan0172 | |
| Request for a status update regarding the testing of front springs. | 17th Oct 1924 | Box 72 \ 3 scan0173 | |
| From BJ to Hs concerning the urgent need for results from front spring testing to prevent further costs and delivery delays. | 17th Oct 1924 | Box 72 \ 3 scan0174 | |
| Telegram from Johnson to Hives inquiring about the status of front spring testing. | 10th May 1935 | Box 72 \ 3 scan0175 | |
| Secret memorandum discussing the testing and procurement of springs for four-wheel brake cars. | 17th Oct 1924 | Box 72 \ 3 scan0176 | |
| Delivery, testing, and fitting of Firths and Woodheads car springs. | 20th Oct 1924 | Box 72 \ 3 scan0177 | |
| Telegram received by telephone enquiring about the strength of an order for Woodhead and Trittons springs. | 20th Oct 1924 | Box 72 \ 3 scan0178 | |
| Telegram concerning the testing of springs with standard tyres and not balloon tyres, and travel instructions. | 23th May 1923 | Box 72 \ 3 scan0179 | |
| Telegram asking for clarification on the strength of springs on order, and instructions for testing and travel. | 20th Oct 1924 | Box 72 \ 3 scan0180 | |
| Modifications to the 98-NK car for a 10,000-mile test in France. | 20th Oct 1924 | Box 72 \ 3 scan0181 | |
| Page 2 of an experimental report detailing tests on low pressure tyres, servo gear, pivot bushes, shock absorbers and gudgeon pins. | 20th Oct 1924 | Box 72 \ 3 scan0182 | |
| Various electrical and mechanical components used in a test. | 20th Oct 1924 | Box 72 \ 3 scan0183 | |
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