| Description | Date | Identifier | |
| Accompanying a blueprint for a proposed alteration to the Continental rear springs. | 14th Feb 1927 | Box 67a \ 1 scan0265 | |
| Blueprint detailing specifications for four different front and rear road springs. | 10th Mar 1927 | Box 67a \ 1 scan0266 | |
| The material and finish of road spring bushes. | 10th Mar 1927 | Box 67a \ 1 scan0267 | |
| Suitability of car springs for the Spanish market. | 10th Mar 1927 | Box 67a \ 1 scan0268 | |
| Letter discussing customer complaints and engineering challenges regarding car springs for vehicles used in Spain. | 25th Feb 1927 | Box 67a \ 1 scan0269 | |
| Car springing issues and solutions for vehicles in Spain. | 1st Mar 1927 | Box 67a \ 1 scan0270 | |
| Suggestion for modifying car suspension and shock absorbers for vehicles being sent to Spain. | 11th Mar 1927 | Box 67a \ 1 scan0271 | |
| Configuration of springs and hydraulic dampers for cars destined for Spain. | 11th Mar 1927 | Box 67a \ 1 scan0272 | |
| Issues with car springs supplied for use in Spain. | 11th Mar 1927 | Box 67a \ 1 scan0273 | |
| Proposals for stiffer springs for various markets due to differing road conditions. | 11th Mar 1927 | Box 67a \ 1 scan0274 | |
| Specification of car springs for the Spanish market. | 14th Mar 1927 | Box 67a \ 1 scan0275 | |
| Standardizing car spring stiffness for different markets, particularly Spain. | 15th Mar 1927 | Box 67a \ 1 scan0276 | |
| Complaint about uncomfortable road springs and proposing alternative stiffness. | 15th Mar 1927 | Box 67a \ 1 scan0277 | |
| Issues with road spring stiffness, a customer complaint about ride quality, and a proposed solution. | 15th Mar 1927 | Box 67a \ 1 scan0278 | |
| The history and issues with supplying car springs for the Spanish market, refuting points from a previous memo. | 11th Mar 1927 | Box 67a \ 1 scan0279 | |
| Proposals for stiffer springs and the need to reconsider car setups for specific international markets. | 11th Mar 1927 | Box 67a \ 1 scan0280 | |
| Investigation into the function and issues of 20% stiffer rear springs for continentally sprung cars. | 2nd Feb 1927 | Box 67a \ 1 scan0281 | |
| Spring and buffer issues causing broken frames, comparing cars set up for Continental versus English roads. | 14th Mar 1927 | Box 67a \ 1 scan0282 | |
| Policy on fitting 20% stiffer springs for cars intended for Spain. | 14th Mar 1927 | Box 67a \ 1 scan0283 | |
| Adjusting spring stiffness for cars in Spain and other Continental countries. | 15th Mar 1927 | Box 67a \ 1 scan0284 | |
| Stiffness and application of front and rear road springs for different driving conditions and markets. | 15th Mar 1927 | Box 67a \ 1 scan0285 | |
| Modifications to front spring designs for Australian road conditions. | 18th Mar 1927 | Box 67a \ 1 scan0286 | |
| Page 2 of a report detailing the construction, benefits, and real-world testing of an improved leaf spring design. | 5th Apr 1927 | Box 67a \ 1 scan0287 | |
| Design of road springs for 40/50 & 20 HP chassis, favouring a simpler rivetted clip design. | 5th Apr 1927 | Box 67a \ 1 scan0288 | |
| Design and adoption of a rivetted-on spring clip for the 40/50 HP and 20 HP models. | 11th Apr 1927 | Box 67a \ 1 scan0289 | |
| Poor riding qualities of a car with a French body, following Mr. Brewster's visit. | 15th Apr 1927 | Box 67a \ 1 scan0290 | |
| Summarizing experimental work on chassis improvements, specifically regarding suspension and brakes for the 40/50 HP model. | 26th Apr 1927 | Box 67a \ 1 scan0291 | |
| Report discussing issues with front brakes, steering on the Phantom, and the petrol supply from the Autovac system. | 26th Apr 1927 | Box 67a \ 1 scan0292 | |
| Technical memorandum discussing chassis improvements including lubrication, front springs, lowering, and weight reduction. | 26th Apr 1927 | Box 67a \ 1 scan0293 | |
| Technical memorandum detailing issues with the 20 HP car's suspension, brakes, steering, and other common problems. | 5th Mar 1927 | Box 67a \ 1 scan0294 | |
| Design and proposals for riveted-on road spring clips for the 40/50 and 20 HP models. | 5th Mar 1927 | Box 67a \ 1 scan0295 | |
| Weight saving on the Phantom's front end by modifying the front springs and wing irons. | 5th Mar 1927 | Box 67a \ 1 scan0296 | |
| Proposal to modify the 40/50 HP chassis springing for European countries, making them 5% stronger. | 6th May 1927 | Box 67a \ 1 scan0297 | |
| Revised springing schemes for Continental, Russian, and Colonial markets. | 9th May 1927 | Box 67a \ 1 scan0298 | |
| Modifying the 40/50 HP springing for Australian and Colonial conditions. | 10th May 1927 | Box 67a \ 1 scan0299 | |
| Supplying different strength springs for testing in various countries with poor road conditions. | 10th May 1927 | Box 67a \ 1 scan0300 | |
| Recommendations for stiffer car springs for Australian conditions. | 10th May 1927 | Box 67a \ 1 scan0301 | |
| Technical memo proposing two alternative rear spring setups for the 40/50 HP model, specifically for the Australian market. | 10th May 1927 | Box 67a \ 1 scan0302 | |
| Front spring specifications for the 40/50 HP and 20 HP models, comparing British and Australian conditions. | 11th May 1927 | Box 67a \ 1 scan0303 | |
| Ordering trial springs for Australia and modifying specifications based on a recent conference. | 11th May 1927 | Box 67a \ 1 scan0304 | |
| Three standards of springing for different global markets and plans for further classification and testing. | 12th May 1927 | Box 67a \ 1 scan0305 | |
| Seeking clarification on spring specifications and terminology for the Australian market. | 13th May 1927 | Box 67a \ 1 scan0306 | |
| Spring specifications and testing for cars destined for Australia. | 18th May 1927 | Box 67a \ 1 scan0307 | |
| Proposals for producing and fitting modified front and rear springs for a car in Australia. | 20th May 1927 | Box 67a \ 1 scan0308 | |
| Cancellation instruction for a special pair of rear springs for an Australian chassis. | 25th May 1927 | Box 67a \ 1 scan0309 | |
| Specification and usage list for 40/50 model springs, detailing part numbers, dimensions, materials, and vehicle series applicability. | 9th May 1927 | Box 67a \ 2 scan0001 | |
| Specification and usage list for 40/50 model springs, detailing part numbers, dimensions, types, and stock levels. | 14th Nov 1927 | Box 67a \ 2 scan0002 | |
| List of eleven objectives for car improvements, prepared for a board meeting. | 25th May 1927 | Box 67a \ 2 scan0003 | |
| Testing chassis 12-EX with altered road springs and shock absorbers for Australian and Continental conditions. | 26th May 1927 | Box 67a \ 2 scan0004 | |
| Continued report page discussing adjustable friction for vehicle springs in Australian conditions. | 27th May 1927 | Box 67a \ 2 scan0005 | |
| Clarifying the spring specifications for a car destined for Australia, correcting a misunderstanding about its passenger capacity. | 27th May 1927 | Box 67a \ 2 scan0006 | |
| Modifications to special springs for a car in Australia. | 30th May 1927 | Box 67a \ 2 scan0007 | |
| Technical note on the necessary adjustment of axle buffer clearance for model 47-AU when modifying the springing. | 31th May 1927 | Box 67a \ 2 scan0008 | |
| Advocating for fitting Hartford hydraulic shock absorbers to cars intended for the Australian market due to its harsher conditions. | 31th May 1927 | Box 67a \ 2 scan0009 | |
| Review of patent No.32913/25 for overcoming rattles in road springs using a threaded sleeve and bush, with Mr. Royce's recommendation for testing. | 1st Jun 1927 | Box 67a \ 2 scan0010 | |
| Use of 20% stiffer chassis springs for cars in Australia. | 24th Jun 1927 | Box 67a \ 2 scan0011 | |
| Improvement of riding qualities through the optimal distribution of weight. | 24th Jun 1927 | Box 67a \ 2 scan0012 | |
| Front springing and shock absorbers to improve ride comfort for a client. | 25th Jun 1927 | Box 67a \ 2 scan0013 | |
| Specification of chassis springs for cars intended for Australia. | 27th Jun 1927 | Box 67a \ 2 scan0014 | |
| Solution for suspension trouble on car 103-MC, involving fitting springs to hydraulic dampers. | 7th Jul 1927 | Box 67a \ 2 scan0015 | |
| Five key improvements for the riding qualities of 40/50 and 20 HP car models. | 9th Jul 1927 | Box 67a \ 2 scan0016 | |
| Performance, sales potential, and development of the 10-EX Blue Sports Phantom. | 11th Jul 1927 | Box 67a \ 2 scan0017 | |
| Internal report detailing performance, handling, and aesthetic issues of the 10-EX Blue Sports Car. | 18th Aug 1927 | Box 67a \ 2 scan0018 | |
| 'pitching' problem in cars, comparing it to a ship's tipping centre and analysing spring and weight dynamics. | 4th Sep 1927 | Box 67a \ 2 scan0019 | |
| Vehicle suspension dynamics, pitching, and ride comfort, using analogies of a ship and a see-saw. | 4th Sep 1927 | Box 67a \ 2 scan0020 | |
| Description of the mechanics and astonishingly fast oscillation of a conveyor system with flexible legs. | 3rd Sep 1927 | Box 67a \ 2 scan0021 | |
| Comparison of rear spring specifications and 'nominal' load calculations between the EAC.7 and Phantom models. | 3rd Sep 1927 | Box 67a \ 2 scan0022 | |
| Two potential strategies for improving car performance and engines. | 1st May 1927 | Box 67a \ 2 scan0023 | |
| Modifications to the front springs and rubber buffers for a Sports Phantom. | 15th Sep 1927 | Box 67a \ 2 scan0024 | |
| Suggesting modifications to shock absorber tests to include rear dampers to address vehicle pitching issues. | 27th Sep 1927 | Box 67a \ 2 scan0025 | |
| Customer's complaint about car pitching and proposing a solution. | 27th Sep 1927 | Box 67a \ 2 scan0026 | |
| Clarifying a previous note regarding the necessity of damping to prevent vehicle pitching. | 29th Sep 1927 | Box 67a \ 2 scan0027 | |
| Calculations and method for springing sports cars with 25% stiffer springs. | 30th Sep 1927 | Box 67a \ 2 scan0028 | |
| Front spring specifications for sports cars, including working stress and deflection. | 30th Sep 1927 | Box 67a \ 2 scan0029 | |
| Developments in suspension, steering, and engine heads. | 30th Sep 1927 | Box 67a \ 2 scan0030 | |
| Trial of 10-EX type springs on a closed car body. | 1st Oct 1927 | Box 67a \ 2 scan0031 | |
| Altered method of rear springing for four specific cars. | 10th Oct 1927 | Box 67a \ 2 scan0032 | |
| Test report comparing the lifespan of Silico Manganese and Chrome Vanadium front road springs. | 3rd Oct 1927 | Box 67a \ 2 scan0033 | |
| Design, testing, and manufacture of suspension springs in collaboration with an external supplier. | 3rd Oct 1927 | Box 67a \ 2 scan0034 | |
| Use of American blueprints for 'Phantom' road springs to avoid creating new designs. | 10th Oct 1927 | Box 67a \ 2 scan0035 | |
| Request to obtain two 900 lbs, 25% stiffer springs to specification F.53048 for experimental purposes. | 5th Oct 1927 | Box 67a \ 2 scan0036 | |
| Instructions for modifying rear road springs on a Phantom chassis, altering the free camber and specifying new piece numbers. | 6th Oct 1927 | Box 67a \ 2 scan0037 | |
| Modification to the rear spring centre trunnion for hand brake rope clearance. | 13th Oct 1927 | Box 67a \ 2 scan0038 | |
| On suspension testing of the 10-EX model, discussing ride comfort, pitching and recommending spring alterations. | 17th Oct 1927 | Box 67a \ 2 scan0039 | |
| Altered method of rear springing for four specific vehicles. | 10th Oct 1927 | Box 67a \ 2 scan0040 | |
| The specifications for front and rear springs for EAC.14 sports cars. | 19th Oct 1927 | Box 67a \ 2 scan0041 | |
| Order for new and altered front and rear road springs for specifications SECS: 7020 & 7030. | 24th Oct 1927 | Box 67a \ 2 scan0042 | |
| New packing scheme for the front springs on Sports Phantom cars to achieve pivot lean. | 24th Oct 1927 | Box 67a \ 2 scan0043 | |
| The potential purchase of a second-hand Cottin Desgouttes car for suspension investigations. | 26th Oct 1927 | Box 67a \ 2 scan0044 | |
| Parts list for the Phantom Chassis front springs and fittings, based on American designs. | 26th Oct 1927 | Box 67a \ 2 scan0045 | |
| Steering and engine vibrations with a four-point rigid suspension. | 28th Oct 1927 | Box 67a \ 2 scan0046 | |
| Issue of 'pitching' caused by American type front springs. | 28th Oct 1927 | Box 67a \ 2 scan0047 | |
| Potential purchase of a Stutz car and requesting American impressions on its general merits. | 31th Oct 1927 | Box 67a \ 2 scan0048 | |
| Requested chassis modifications for the first two sports cars. | 31th Oct 1927 | Box 67a \ 2 scan0049 | |
| Correct buffers and bolts for special rear road springs, replacing standard parts. | 2nd Nov 1927 | Box 67a \ 2 scan0050 | |
| Comparative suspension tests between semi-elliptic and cantilever sprung 40/50 HP cars. | 11th Nov 1927 | Box 67a \ 2 scan0051 | |
| Testing hydraulics with an increased viscosity factor for improved damping and ride quality. | 11th Nov 1927 | Box 67a \ 2 scan0052 | |
| Adjustments to the rear suspension and buffer clearance on the 10-EX sports car. | 11th Nov 1927 | Box 67a \ 2 scan0053 | |
| Test report on the performance of rear springs and hydraulic dampers on car 14-EX. | 7th Nov 1927 | Box 67a \ 2 scan0054 | |
| Axle clearance and suggesting an increase in spring stiffness. | 11th Nov 1927 | Box 67a \ 2 scan0055 | |
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