| Description | Date | Identifier | |
| Sending an experimental friction device for the Phantom II steering wheel. | 19th May 1932 | Box 17 \ 4 Scan027 | |
| Potential improvements to car intake/exhaust silencers and steering systems. | 14th Apr 1932 | Box 17 \ 4 Scan028 | |
| Improvements to the steering mechanism by adding fixed friction and comparing two designs. | 20th May 1932 | Box 17 \ 4 Scan029 | |
| Combination of parts for the steering system, focusing on friction, damping, and design responsibility. | 30th May 1932 | Box 17 \ 4 Scan030 | |
| Steering improvements, the shimmy shackle, axle arrangements, and comparisons to American car designs. | 7th Jun 1932 | Box 17 \ 4 Scan031 | |
| Typed report on steering system design, discussing friction, ratios, and high-speed stability issues. | 7th Jun 1932 | Box 17 \ 4 Scan032 | |
| Steering system issues, including friction, self-centering, and comparisons with American designs. | 4th Jul 1932 | Box 17 \ 4 Scan033 | |
| Tests on frame jellying and potential steering improvements for the Phantom II chassis. | 7th Jun 1932 | Box 17 \ 4 Scan034 | |
| Poor steering of the Phantom II and proposing to acquire a Cadillac steering system for comparison. | 21th Jun 1932 | Box 17 \ 4 Scan035 | |
| Outlining proposals for the redesign of steering column controls for R.R. and Bentley cars. | 14th Jul 1932 | Box 17 \ 4 Scan036 | |
| Usability and layout of controls on the steering column for the Bensport and Peregrine models. | 16th Jul 1932 | Box 17 \ 4 Scan037 | |
| Controls on the steering column, specifically the mixture control for the Bensport model and the lack of a foot dimming switch. | 19th Jul 1932 | Box 17 \ 4 Scan038 | |
| Design and placement of controls on the steering column for various car models. | 15th Jul 1972 | Box 17 \ 4 Scan039 | |
| Confirming the decision to retain the foot-operated dipping switch on the Phantom II car. | 29th Jul 1932 | Box 17 \ 4 Scan040 | |
| Confirming an agreement on modified controls for the steering column for both RR and Bentley cars. | 11th Aug 1932 | Box 17 \ 4 Scan041 | |
| Preliminary tests of a friction scheme for a steering column, noting a point for modification. | 17th Aug 1932 | Box 17 \ 4 Scan042 | |
| Graph charting the efficiency of Marles Weller steering for the Phantom II model before and after a bumper test. | 31th Jan 1933 | Box 17 \ 4 Scan043 | |
| Page with a handwritten reference number and a company date stamp. | 8th Feb 1938 | Box 17 \ 4 Scan044 | |
| Recommendation to standardize shortened steering column top control levers for the Phantom II. | 22th Feb 1933 | Box 17 \ 4 Scan045 | |
| Investigation into applying the Marles Weller principle to the Phantom II steering box. | 24th Feb 1933 | Box 17 \ 4 Scan046 | |
| The design and standardisation of special steering column controls for the Phantom II chassis 64-MY and 62-MY. | 23th Feb 1935 | Box 17 \ 4 Scan047 | |
| The decision not to alter the current design of shortened steering column-top control levers. | 27th Feb 1933 | Box 17 \ 4 Scan048 | |
| Results of a 50-hour test on a Marles steering gear fitted to a Phantom II chassis. | 28th Feb 1933 | Box 17 \ 4 Scan049 | |
| Efficiency comparison between a P.II. type steering worm and nut and a Marles-Weller type steering system. | 16th May 1933 | Box 17 \ 4 Scan050 | |
| Comparing Marles and Marles Weller steering gears, providing reasons against adopting the former. | 17th Jun 1933 | Box 17 \ 4 Scan051 | |
| Suggested experiment to modify the Phantom II steering nuts to improve performance. | 28th Jun 1933 | Box 17 \ 4 Scan052 | |
| Experiment on the Phantom II steering gear using old type .940' lead steering gear. | 12th Jul 1933 | Box 17 \ 4 Scan053 | |
| Parts for a Phantom II steering column and box, for production and fitting on an experimental chassis. | 28th Jul 1933 | Box 17 \ 4 Scan054 | |
| Parts for the Phantom II chassis steering column and box. | 3rd Aug 1933 | Box 17 \ 4 Scan055 | |
| Continued list of required stud or existing parts for section 705D. | 4th Mar 1933 | Box 17 \ 4 Scan056 | |
| Continued list of standard or existing required parts for section 705. | 11th Mar 1933 | Box 17 \ 4 Scan057 | |
| List of standard or existing parts required for the steering assembly, section D 50. | 3rd Aug 1933 | Box 17 \ 4 Scan058 | |
| Experiments and modifications to improve the Phantom II steering system. | 11th Sep 1933 | Box 17 \ 4 Scan059 | |
| Request for a report on steering experiments concerning a steering nut and a lead worm. | 17th Nov 1933 | Box 17 \ 4 Scan060 | |
| Steering experiments, including the decision to use independent front wheel springing on car 27-EX and fitting new parts to car 22-EX. | 20th Nov 1933 | Box 17 \ 4 Scan061 | |
| Comparison of efficiency between steering nuts with .940 lead and the standard .720 lead. | 24th Nov 1933 | Box 17 \ 4 Scan062 | |
| Data sheet on steering frictions, showing load applied at the rim of the steering wheel for models 22-EX and 27-EX. | 1st Dec 1933 | Box 17 \ 4 Scan063 | |
| Results of further tests carried out on the .940 lead steering nut F.73600 and worm F.73600-1. | 6th Dec 1933 | Box 17 \ 4 Scan064 | |
| Confirming the efficiency figures for a .940 lead worm and nut. | 6th Dec 1933 | Box 17 \ 4 Scan065 | |
| Parking efficiency figures for different steering nut and worm leads. | 7th Dec 1933 | Box 17 \ 4 Scan066 | |
| Test results of .720 and .940 lead Steering Worms. | 15th Dec 1933 | Box 17 \ 4 Scan067 | |
| Comparative test report on the efficiency of various worm gears under different loads. | 11th Jun 1934 | Box 17 \ 4 Scan068 | |
| Analysis of steering performance with controllable dampers and a comparison of steering boxes for 40/50 and 20/25 models. | 11th Jun 1934 | Box 17 \ 4 Scan069 | |
| New procedure for using experimental fitting and test record cards. | 15th Jul 1937 | Box 17 \ 4 Scan070 | |
| The mechanical efficiency of the La Salle steering box under static conditions. | 11th Jun 1934 | Box 17 \ 4 Scan071 | |
| From Wor. to Hs. requesting views on an attached document regarding 128-PY and Gustav Wyns. | 3rd Sep 1934 | Box 17 \ 4 Scan072 | |
| Customer issue with car 128-PY (Gustav Wyns) and potential investigation. | 30th Aug 1934 | Box 17 \ 4 Scan073 | |
| Complaint case regarding a customer's steering issues, described as 'shimmy' or high-speed wobble. | 30th Aug 1934 | Box 17 \ 4 Scan074 | |
| Customer's experience with vehicle 'shimmy', their driving habits, and observations on market competition. | 30th Aug 1934 | Box 17 \ 4 Scan075 | |
| Investigations into car performance, specifically a 40/50 car and a Bentley on Belgian roads. | 30th Aug 1934 | Box 17 \ 4 Scan076 | |
| Complaint case regarding high-speed steering unsteadiness on car 128-PY owned by Gustav Wyns. | 30th Aug 1934 | Box 17 \ 4 Scan077 | |
| Customer's feedback on vehicle performance, driving habits, and suggestions for experimental modifications. | 11th Sep 1934 | Box 17 \ 4 Scan078 | |
| Follow-up memo from 'Wor.' requesting views on a matter concerning Gustav Wyns. | 11th Sep 1934 | Box 17 \ 4 Scan079 | |
| Methods for improving the steering on a Phantom, chassis 128-PY, for customer Gustav Wyns. | 17th Sep 1934 | Box 17 \ 4 Scan080 | |
| Query regarding sending a mechanic to try out parts on Gustav Wyns' car, chassis number 128-PY. | 24th Sep 1934 | Box 17 \ 4 Scan081 | |
| Telegram received by telephone regarding the welding of silencer parts and travel difficulties. | 27th Sep 1934 | Box 17 \ 4 Scan082 | |
| Telegram inquiry regarding the sending of men's wages and the requirement for return vouchers. | 10th May 1933 | Box 17 \ 4 Scan083 | |
| Steering improvements and testing for Chassis 128-PY for Mr. Gustav Wyns. | 25th Sep 1934 | Box 17 \ 4 Scan084 | |
| Instruction letter regarding a customer complaint in Belgium, car movements, and testing of new parts on a Bentley. | 25th Sep 1934 | Box 17 \ 4 Scan085 | |
| Cover note for a report regarding a complaint from Mr. Gustav Wyns about a 40/50 128-PY. | 12th Oct 1934 | Box 17 \ 4 Scan086 | |
| Investigation into a customer complaint from Gustav Wyns in Brussels regarding steering, braking, and other issues. | 9th Oct 1934 | Box 17 \ 4 Scan087 | |
| Issues with tyre wear, instrument breakage, and mechanical noise during vehicle testing. | 9th Oct 1934 | Box 17 \ 4 Scan088 | |
| Customer's car performance on very bad roads and a comparison to Minerva cars. | 18th Oct 1934 | Box 17 \ 4 Scan089 | |
| Customer's complaints about steering issues on a Phantom model compared to his Minerva. | 22th Oct 1934 | Box 17 \ 4 Scan090 | |
| Drafting of a letter in response to a customer complaint. | 2nd Nov 1934 | Box 17 \ 4 Scan091 | |
| Letter to a customer regarding steering problems at high speed on chassis 128-PY due to Belgian road conditions. | 2nd Nov 1934 | Box 17 \ 4 Scan092 | |
| Steering, brakes, tire wear and instruments in relation to road conditions in Belgium and France. | 2nd Nov 1934 | Box 17 \ 4 Scan093 | |
| Letter expressing regret for being unable to suggest car alterations for the exceptional road conditions in Belgium. | 6th Nov 1934 | Box 17 \ 4 Scan094 | |
| Response regarding the behaviour of chassis 128-PY on rough roads, mentioning the upcoming Spectre model. | 6th Nov 1934 | Box 17 \ 4 Scan095 | |
| Experimental department report on Spectre Steering. | 10th Dec 1934 | Box 17 \ 4 Scan096 | |
| Steering tests for the 'Spectre' model, comparing its performance with a Cadillac and analysing the impact of different steering boxes, suspension, and tyre setups. | 10th Dec 1934 | Box 17 \ 4 Scan097 | |
| Tests and modifications to a vehicle's suspension and steering geometry to correct oversteer and other handling issues. | 10th Dec 1934 | Box 17 \ 4 Scan098 | |
| Steering tests for car 27-EX, fitted with parallel motion independent front suspension, to diagnose high speed wobble. | 10th Dec 1934 | Box 17 \ 4 Scan099 | |
| Report comparing steering wheel turns over a 12-mile run for different steering tube configurations. | 10th Dec 1934 | Box 17 \ 4 Scan100 | |
| Test report on Independent Front Wheel Suspension (I.F.W.S.) steering performance for various chassis configurations. | 11th Dec 1934 | Box 17 \ 4 Scan101 | |
| Blank document stamped by the Print Room in Derby. | 11th Dec 1934 | Box 17 \ 4 Scan102 | |
| Tabular comparison of steering geometry measurements for a Spectre car under roll conditions, with both original steering and short bottom links. | 10th Dec 1934 | Box 17 \ 4 Scan103 | |
| Blank page stamped by the Print Room in Derby. | 10th Dec 1934 | Box 17 \ 4 Scan104 | |
| Adaptation of a Spectre Marles Type steering box to a Phantom chassis. | 20th Feb 1935 | Box 17 \ 4 Scan105 | |
| Scheme for fitting a Spectre type Marles steering system into a Phantom chassis. | 21th Feb 1930 | Box 17 \ 4 Scan106 | |
| Defects and potential improvements to a petrol gauge, including washer materials and dial design. | 1st Jul 1926 | Box 17 \ 5 Scan001 | |
| Proposal to modify the petrol tank filter fitting for easier withdrawal on experimental cars. | 8th Jan 1927 | Box 17 \ 5 Scan002 | |
| Design modifications to the luggage carriers for the Phantom model. | 24th May 1927 | Box 17 \ 5 Scan003 | |
| Expressing disappointment with the 'SS' rear end, petrol tank, and wheel carrier design, requesting a simpler scheme. | 7th Apr 1928 | Box 17 \ 5 Scan004 | |
| Modifications to the rear end of the 'SS' chassis. | 17th May 1928 | Box 17 \ 5 Scan005 | |
| The incorrect positioning of the Telegage and filter on a 12-EX tank. | 21th Sep 1928 | Box 17 \ 5 Scan006 | |
| The repositioning of a K-S petrol gauge within the tank of a 10-EX vehicle. | 1st Sep 1928 | Box 17 \ 5 Scan007 | |
| Filling the petrol tanks of show cars with water for display purposes. | 28th Sep 1928 | Box 17 \ 5 Scan008 | |
| Requesting the completion of an 'SS' tank to allow for petrol gauge calibration and fitting. | 1st Oct 1928 | Box 17 \ 5 Scan009 | |
| The despatch of a petrol tank and Telegage instrument to Messrs. H.M. Hobson Ltd. for investigation. | 19th Nov 1928 | Box 17 \ 5 Scan010 | |
| Requesting an order for K-S petrol gauges from Messrs. H.M. Hobson for six SS chassis. | 23th Nov 1928 | Box 17 \ 5 Scan011 | |
| The supply and payment for a K-S petrol gauge. | 7th Dec 1928 | Box 17 \ 5 Scan012 | |
| Fouling issues and proposed modifications for mounting a Hooper Sedanca body on a 19-EX chassis. | 11th Dec 1928 | Box 17 \ 5 Scan013 | |
| Difficulties with the 'SS' reserve petrol supply and the practicality of the 2-level tap. | 24th Jan 1929 | Box 17 \ 5 Scan014 | |
| Recommendation to remove the reserve fuel system due to the advent of dashboard petrol gauges. | 30th Jan 1929 | Box 17 \ 5 Scan015 | |
| Simplification of the petrol supply and reserve system. | 30th Jan 1929 | Box 17 \ 5 Scan016 | |
| Results of a vacuum pump test with low fuel levels. | 31th Jan 1929 | Box 17 \ 5 Scan017 | |
| The design of a single petrol tank filter for different car bodies and its application to the 20 HP model. | 2nd Feb 1929 | Box 17 \ 5 Scan018 | |
| Approval note for chassis modifications regarding trunk fixing, petrol tank support, and a large petrol filter. | 18th Feb 1929 | Box 17 \ 5 Scan019 | |
| The standardisation of K.S. Telegage gauges for the S.S. and 20 HP models, detailing supplier interactions and installation requirements. | 27th Mar 1929 | Box 17 \ 5 Scan020 | |
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