| Description | Date | Identifier | |
| Concerns about the weight of car road springs, comparing American and standard designs. | 14th Nov 1927 | Box 67a \ 2 scan0056 | |
| Spring design, weight reduction, and material choices for vehicle suspension. | 14th Nov 1927 | Box 67a \ 2 scan0057 | |
| Continued discussion on the weight increase of stiffer springs compared to standard springs. | 15th Nov 1927 | Box 67a \ 2 scan0058 | |
| Suspension springing and damping issues, particularly the problem of hitting the buffers. | 15th Nov 1927 | Box 67a \ 2 scan0059 | |
| Delivery and required modifications for fitting new road springs to the 10-EX car. | 16th Nov 1927 | Box 67a \ 2 scan0060 | |
| The required poundages for front and rear springs for the Phantom Chassis 12-EX. | 29th Nov 1927 | Box 67a \ 2 scan0061 | |
| Implementation of negative camber front springs for the Standard Phantom model. | 1st Dec 1927 | Box 67a \ 2 scan0062 | |
| Instruction on altering the 40/50 model rear springs to lower the car. | 1st Dec 1927 | Box 67a \ 2 scan0063 | |
| Specifying the required poundage for the front springs on model 12-EX. | 1st Dec 1927 | Box 67a \ 2 scan0064 | |
| Instruction for fitting 1650 lbs rear springs and modifying the buffer depth for car 12-EX. | 12th Dec 1927 | Box 67a \ 2 scan0065 | |
| Request for the weight of the rear road springs for Phantom Chassis 12-EX. | 2nd Dec 1927 | Box 67a \ 2 scan0066 | |
| Technical memorandum discussing suspension dynamics and the pitching characteristics of various car models. | 12th Dec 1927 | Box 67a \ 2 scan0067 | |
| Suspension, the Lancia system, and a proposed modification to the Phantom's wheelbase. | 9th Dec 1927 | Box 67a \ 2 scan0068 | |
| Advantages and disadvantages of flexible front suspension springs. | 9th Dec 1927 | Box 67a \ 2 scan0069 | |
| The effects of stiffer rear springs on car handling, riding position, and control, specifically concerning the 10-EX model. | 12th Dec 1927 | Box 67a \ 2 scan0070 | |
| The performance and suitability of two new sets of stronger rear springs. | 12th Dec 1927 | Box 67a \ 2 scan0071 | |
| Letter from Maurice Olley discussing vehicle riding quality, specifically pitching speed and the effect of mass distribution on the 20 HP and Phantom models. | 16th Dec 1927 | Box 67a \ 2 scan0072 | |
| The fundamentals of car performance, focusing on suspension 'pitching' and weight distribution. | 12th Dec 1927 | Box 67a \ 2 scan0073 | |
| Comparison of vehicle weight distribution and suspension design to reduce pitching, mentioning Lancia, 20 HP, and 40/50 models. | 20th Dec 1927 | Box 67a \ 2 scan0074 | |
| Improving ride comfort by adjusting weight distribution on the chassis. | 20th Dec 1927 | Box 67a \ 2 scan0075 | |
| Notes on suspension efficiency, vehicle balance, and managing pitching discomfort by adjusting rear spring damping. | 20th Dec 1927 | Box 67a \ 2 scan0076 | |
| Requirements for springs and instruments for the proposed Alpine Phantom cars. | 21th Dec 1927 | Box 67a \ 2 scan0077 | |
| Specifications for speedometer and rev-counter calibration, performance, and required cable length. | 20th Dec 1927 | Box 67a \ 2 scan0078 | |
| Suspension problems, specifically 'pitching' in the 40/50 HP model, and the ideal weight distribution for minimizing it. | 20th Dec 1927 | Box 67a \ 2 scan0079 | |
| Circulation of information for the 40/50 HP suspension. | 21th Dec 1927 | Box 67a \ 2 scan0080 | |
| Comparison of chassis design between the 20 HP and 40/50 models, focusing on factors affecting pitching. | 21th Dec 1927 | Box 67a \ 2 scan0081 | |
| List of recommendations for improving car riding characteristics by adjusting weight distribution. | 23th Dec 1927 | Box 67a \ 2 scan0082 | |
| 40/50 suspension system, specifically rear spring alterations and buffer clearance. | 23th Dec 1927 | Box 67a \ 2 scan0083 | |
| Improvements for Phantom chassis to address issues with riding qualities, sea-sickness, and steering. | 23th Dec 1927 | Box 67a \ 2 scan0084 | |
| Excellent suspension and handling of a Phantom sports car, noting its low centre of gravity. | 31th Dec 1927 | Box 67a \ 2 scan0085 | |
| Sketch and calculation of a vehicle's weight distribution and center of gravity. | 23th Mar 1931 | Box 67a \ 2 scan0086 | |
| Requesting an alteration to the poundage and negative camber of P.I. road springs. | 23th Mar 1931 | Box 67a \ 2 scan0087 | |
| Instructions for the temporary replacement of rear road springs on a Phantom 1 car, chassis 110-DC. | 24th Mar 1931 | Box 67a \ 2 scan0088 | |
| Revised specifications for P.I. road springs, altering poundage and camber. | 25th Mar 1931 | Box 67a \ 2 scan0089 | |
| Road test of chassis 110-DC, focusing on its springing and handling characteristics. | 30th Apr 1931 | Box 67a \ 2 scan0090 | |
| Spring modifications for a Phantom I chassis (110-DC) to improve ride comfort. | 30th Apr 1931 | Box 67a \ 2 scan0091 | |
| Inquiring about the anticipated weight of road springs for EAC.14 cars and potential for weight reduction. | 1st Jan 1928 | Box 67a \ 2 scan0092 | |
| Specifications and ordering instructions for front and rear road springs. | 3rd Jan 1928 | Box 67a \ 2 scan0093 | |
| The testing, suitability, and production of stiffer rear road springs. | 3rd Jan 1928 | Box 67a \ 2 scan0094 | |
| Specifications and order instructions for front and rear road springs, cancelling a previous memo. | 4th Jan 1928 | Box 67a \ 2 scan0095 | |
| The ordering and weight specifications of front and rear road springs. | 4th Jan 1928 | Box 67a \ 2 scan0096 | |
| Pros and cons of using chromium plating on various components and suggesting suitable parts for testing. | 1st Jan 1928 | Box 67a \ 2 scan0097 | |
| Springing experiments and pitching issues on chassis 115-MC. | 10th Jan 1928 | Box 67a \ 2 scan0098 | |
| Scheme to reduce chassis height by reducing the camber of the springs. | 10th Jan 1928 | Box 67a \ 2 scan0099 | |
| Technical note on vehicle springing, damping, and buffer clearance to address pitching issues. | 13th Jan 1928 | Box 67a \ 2 scan0100 | |
| Instructions for experimental load testing on front and rear hydraulic shock absorbers, detailing specific load limits. | 14th Jan 1928 | Box 67a \ 2 scan0101 | |
| Suspension design, weight distribution, and damping for 20 HP and 40/50 HP models. | 14th Jan 1928 | Box 67a \ 2 scan0102 | |
| Increasing front buffer clearance and improving damping systems for rough road performance. | 19th Jan 1928 | Box 67a \ 2 scan0103 | |
| Urgent request to order an initial set of 1100 lbs front road springs for a Sports car type for 10,000-mile tests in France. | 19th Jan 1928 | Box 67a \ 2 scan0104 | |
| Ordering of standby Front Road Springs for the 10,000 Miles Tests. | 30th Jan 1928 | Box 67a \ 2 scan0105 | |
| The ordering, storage, and fitting of experimental stronger rear road springs. | 27th Jan 1928 | Box 67a \ 2 scan0106 | |
| Sending stiffer springs to Cricklewood for trials on Sir John Latta's car. | 27th Jan 1928 | Box 67a \ 2 scan0107 | |
| Specifications, weight, and rating of sports car rear springs compared to standard springs. | 28th Jan 1928 | Box 67a \ 2 scan0108 | |
| Weight reduction for sports car rear springs and communication with spring makers. | 14th Nov 1927 | Box 67a \ 2 scan0109 | |
| Issue of a blueprint for the F.78403 Front Road Spring for the Phantom Chassis. | 30th Jan 1928 | Box 67a \ 2 scan0110 | |
| Letter discussing differing opinions on riding quality, sprung-mass calculations, shock absorbers, and aerodynamics between the US and UK branches. | 9th Feb 1928 | Box 67a \ 2 scan0111 | |
| Letter discussing vehicle riding comfort, suspension dynamics using the K²/ab formula, and cushion design. | 15th Feb 1928 | Box 67a \ 2 scan0112 | |
| Hydraulic shock absorbers on the 14-EX model, proposing heavier front springs. | 15th Feb 1928 | Box 67a \ 2 scan0113 | |
| Changes to the rear springs and fittings for the Phantom chassis. | 17th Feb 1928 | Box 67a \ 2 scan0114 | |
| Amending a suggested order for special light type rear springs for the Continental Phantom. | 2nd Feb 1928 | Box 67a \ 2 scan0115 | |
| Spring ratings, calculation methods, and a request for data suitable for Australia. | 10th Mar 1928 | Box 67a \ 2 scan0116 | |
| Bumper tests conducted on American type front road springs. | 29th Mar 1928 | Box 67a \ 2 scan0117 | |
| Sending a schedule showing the application of centralised lubrication to the front spring shackle. | 18th Apr 1928 | Box 67a \ 2 scan0118 | |
| Notification of a blueprint for a lightened type of Rear Road Spring for the E.A.C.14 chassis. | 20th Apr 1928 | Box 67a \ 2 scan0119 | |
| Correspondence regarding the springing issues and modifications for Sir John Latta's Phantom car, chassis 92-LC. | 23th Apr 1928 | Box 67a \ 2 scan0120 | |
| Seeking authority from Sir John for fitting rear hydraulic dampers and experimental springs. | 23th Apr 1928 | Box 67a \ 2 scan0121 | |
| Springing history and ride comfort issues of chassis 82-LC and 44-EH. | 24th Apr 1928 | Box 67a \ 2 scan0122 | |
| Modifications to a car's suspension, including identical springing and the addition of hydraulics. | 12th May 1928 | Box 67a \ 2 scan0123 | |
| Photomicrographs showing the structures and decarburisation of road spring plates. | 12th May 1928 | Box 67a \ 2 scan0124 | |
| Two photomicrographs, No. A589 at 100x magnification and No. A590 at 1000x magnification. | 29th Mar 1927 | Box 67a \ 2 scan0125 | |
| Two laboratory photomicrographs, numbers A591 and A592, at 1,000 diameters magnification. | 29th Mar 1927 | Box 67a \ 2 scan0126 | |
| Recommendations to improve the 40/50 model's suspension for high-speed performance. | 19th May 1928 | Box 67a \ 2 scan0127 | |
| Recommendations for supplementing suspension damping with Hartfords and adjusting steering pivot lean. | 21th May 1928 | Box 67a \ 2 scan0128 | |
| Suspension spring deflection and buffer clearance modifications for EAC.7 and EAC.10 models. | 21th May 1928 | Box 67a \ 2 scan0129 | |
| Urgent internal memo requesting advice and recommendations on a matter received from Bombay. | 21th May 1928 | Box 67a \ 2 scan0130 | |
| Extract from a report detailing complaints about steering, balloon tyres, and front suspension issues on various car models. | 6th Feb 1928 | Box 67a \ 2 scan0131 | |
| Various vehicle issues including springs, air valves, tappets, wheels, and steering. | 22th May 1928 | Box 67a \ 2 scan0132 | |
| Requesting the preparation and cadmium plating of standard front road springs for a bump test. | 22th May 1928 | Box 67a \ 2 scan0133 | |
| Customer's complaint regarding rear springs and the intended effect of fitting stiffer ones. | 31th May 1928 | Box 67a \ 2 scan0134 | |
| Fitting of continental type springs and Hartfords to a car. | 16th Jun 1928 | Box 67a \ 2 scan0135 | |
| The testing and performance of cadmium plated road springs. | 1st Jun 1928 | Box 67a \ 2 scan0136 | |
| Request to arrange for cadmium plating of front and rear road springs with specific camber details. | 29th Jun 1928 | Box 67a \ 2 scan0137 | |
| The performance and failures of a centralised lubrication scheme and a cadmium plated road spring. | 17th Jul 1928 | Box 67a \ 2 scan0138 | |
| Actions to improve vehicle ride comfort by modifying springing and tyres. | 20th Jul 1928 | Box 67a \ 2 scan0139 | |
| Query about the standardization date for the hydraulic shock damper and spring strengths. | 20th Jul 1928 | Box 67a \ 2 scan0140 | |
| Serious complaints about vehicle springing and the urgent need for improvement. | 25th Jul 1928 | Box 67a \ 2 scan0141 | |
| Recommendation on fitting 25% stiffer springs for heavily sprung cars, discussing buffer clearances and alternatives. | 26th Jul 1928 | Box 67a \ 2 scan0142 | |
| Springing specifications for the Phantom car, focusing on buffer clearance and spring stiffness. | 24th Jul 1928 | Box 67a \ 2 scan0143 | |
| Page discussing numerous complaints and breakages of springs on Phantom, 40/50 HP, and early 20 HP cars. | 23th Jul 1928 | Box 67a \ 2 scan0144 | |
| Analysis of springing issues on 20 HP cars, comparing performance under Continental and British road conditions. | 23th Jul 1928 | Box 67a \ 2 scan0145 | |
| Technical discussion on suspension spring issues and potential improvements for the Phantom & 40/50 HP models. | 27th Jul 1928 | Box 67a \ 2 scan0146 | |
| Recommendation to purchase a Cottin Desgouttes car with separately sprung wheels for evaluation by the Experimental Department. | 27th Jul 1928 | Box 67a \ 2 scan0147 | |
| Letter to Lord Herbert Scott regarding the springing system of Cottin-Desgouttes cars. | 25th Jul 1928 | Box 67a \ 2 scan0148 | |
| Recommending the purchase of a Cottin Desgouttes car to study its springing system for potential improvements. | 27th Jul 1928 | Box 67a \ 2 scan0149 | |
| Springing tests and complaints for the Phantom model, addressing issues like jolting at low speeds. | 27th Jul 1928 | Box 67a \ 2 scan0150 | |
| Springing complaints, comparing the 20 HP and 40/50 HP models and issues with 'Phantom' springing. | 31th Jul 1928 | Box 67a \ 2 scan0151 | |
| Large discrepancy in poundage between the offside and nearside rear springs on the 40/50 HP chassis. | 31th Jul 1928 | Box 67a \ 2 scan0152 | |
| The weight allowance on the 40/50 HP main springs to counterbalance the battery and spare wheel. | 7th Aug 1928 | Box 67a \ 2 scan0153 | |
| Incorrect buffer clearances and rear springs on a 29-CL car, suggesting a reversion to original parts. | 8th Aug 1928 | Box 67a \ 2 scan0154 | |
| Request to return suspected faulty Continental type thick leaf springs from a 29-CL car for investigation. | 8th Aug 1928 | Box 67a \ 2 scan0155 | |
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