| Description | Date | Identifier | |
| Trial of a new .825 lead steering worm and a 9 3/4' pendulum lever for 40/50 steerings. | 1st May 1928 | Box 17 \ 3 Scan251 | |
| Trials of a new .825 lead steering worm and a 9 3/4' pendulum lever for the 40/50 steering system. | 28th May 1928 | Box 17 \ 3 Scan252 | |
| The production timeline for .825 lead steering nuts, proposing the .940 conversion as a satisfactory alternative for the time being. | 9th May 1928 | Box 17 \ 3 Scan253 | |
| New design for a damped pendulum lever using laminated springs. | 9th May 1928 | Box 17 \ 3 Scan254 | |
| Standardisation report for a 9.5' pendulum lever with otherwise standard steering. | 24th Mar 1928 | Box 17 \ 3 Scan255 | |
| Test date and costs for fitting a new part to a specific chassis. | 9th Jun 1928 | Box 17 \ 3 Scan256 | |
| Side steering lever length and spring specifications for the 40/50 steering system. | 11th May 1928 | Box 17 \ 3 Scan257 | |
| Specification table for Phantom side steering tube ends. | 14th May 1928 | Box 17 \ 3 Scan258 | |
| Technical memorandum regarding changes and performance of the 40/50 HP steering system. | 14th May 1928 | Box 17 \ 3 Scan259 | |
| Improving steering control and preventing high-speed wobbles by adjusting ball pin travel. | 16th May 1928 | Box 17 \ 3 Scan260 | |
| Trial of 'D' type steering and suggestions for a proposed 'E' type steering for the Phantom G.2.B. series. | 16th May 1928 | Box 17 \ 3 Scan261 | |
| Specifications for rebuilding chassis 15-EX, including frame, radiator, and steering type. | 16th May 1928 | Box 17 \ 3 Scan262 | |
| The new design of a damped pendulum lever with leaf springs for 'SS' steering. | 7th May 1928 | Box 17 \ 3 Scan263 | |
| Sending schedule N.sch. 2605, detailing the design of a side steering tube for use with a damped pendulum lever. | 7th May 1928 | Box 17 \ 3 Scan264 | |
| Causes of 'joggling' at the steering wheel, attributing it to gyrostatic reaction and road shocks, and suggesting damping solutions. | 17th May 1928 | Box 17 \ 3 Scan265 | |
| Improvements and progress on the Phantom chassis, including damping, steering, and engine components. | 17th May 1928 | Box 17 \ 3 Scan266 | |
| The blueprint for a 40/50 HP side steering tube fitted on the 14-EX model. | 19th May 1928 | Box 17 \ 3 Scan267 | |
| Responding to a query about the 40/50 HP side steering tube fitted on 14-EX, confirming a blueprint is being sent. | 19th May 1928 | Box 17 \ 3 Scan268 | |
| The compromised steering design for the 14-EX car, defending it and listing other new features. | 22th May 1928 | Box 17 \ 3 Scan269 | |
| Instructions for fitting a .720 lead steering column in place of the existing .900 lead steering column on a 12-EX Chassis. | 24th May 1928 | Box 17 \ 3 Scan270 | |
| Criticisms and comparisons of various steering systems, including issues with high-speed wobble. | 25th May 1928 | Box 17 \ 3 Scan271 | |
| Comparison of steering performance and design factors between the 20 HP and 40/50 models. | 31th May 1928 | Box 17 \ 3 Scan272 | |
| Substitution of parts for a .720 lead steering assembly on a 12-EX chassis. | 31th May 1928 | Box 17 \ 3 Scan273 | |
| Proposed 'E' type steering modifications for the Phantom G.2.B. series. | 14th Jun 1928 | Box 17 \ 3 Scan274 | |
| Requesting confirmation on the support of a steering column with a standard cast dash. | 15th Jun 1928 | Box 17 \ 3 Scan275 | |
| Solutions to a steering problem, including spring and hydraulic damping. | 15th Jun 1928 | Box 17 \ 3 Scan276 | |
| Support of the steering column with a cast dash on cars 12-EX and 14-EX. | 8th Jun 1928 | Box 17 \ 3 Scan277 | |
| Trial and modifications required for 'E' steering on a G.2.B. series car. | 19th Jun 1928 | Box 17 \ 3 Scan278 | |
| The support of the steering column with a cast dash. | 21th Jun 1928 | Box 17 \ 3 Scan279 | |
| Standardisation sheet memo regarding the 10' Pendulum Lever for the Phantom, pending a 10,000-mile test report. | 21th Jun 1928 | Box 17 \ 3 Scan280 | |
| Agreeing to fit an 'E' type steering on vehicle 12-EX and alter the front seat. | 21th Jun 1928 | Box 17 \ 3 Scan281 | |
| Requesting instructions be issued for fitting the new 'E' steering to a 12-EX car. | 21th Jun 1928 | Box 17 \ 3 Scan282 | |
| Proposed adjustment and spring load for the front axle control ball joint. | 21th Jun 1928 | Box 17 \ 3 Scan283 | |
| Agreement to modify steering wheel clearance and dimension for the E. Steering G.2.B. Series. | 23th Jun 1928 | Box 17 \ 3 Scan284 | |
| Standardisation report for a 10 inch Pendulum Lever chassis part. | 17th May 1928 | Box 17 \ 3 Scan285 | |
| Chassis number, test date, and costs for fitting a new part. | 9th Jun 1928 | Box 17 \ 3 Scan286 | |
| Pedal and steering column fitting issues for the Phantom Chassis 'E'. | 27th Jun 1928 | Box 17 \ 3 Scan287 | |
| Proposal and design challenges for a larger diameter steering wheel. | 28th Jun 1928 | Box 17 \ 3 Scan288 | |
| Tests and improvements to overcome high speed wobbles in 40/50 HP steering. | 5th Jul 1928 | Box 17 \ 3 Scan289 | |
| Experimental vehicle testing, comparing frame stiffness, suspension damping, and ride comfort. | 5th Jul 1928 | Box 17 \ 3 Scan290 | |
| Tests concerning wheel balance, frame torsion, and steering issues like 'nibbling' and 'wandering'. | 5th Jul 1928 | Box 17 \ 3 Scan291 | |
| Graph showing frame twisting test results comparing standard, x-membered, and 4-point mounting configurations. | 5th Jul 1928 | Box 17 \ 3 Scan292 | |
| Blank document with a red ink stamp in the bottom right corner. | 5th Jul 1928 | Box 17 \ 3 Scan293 | |
| Blueprint of an X-shaped cross-member with engine mounting points for the 10-EX model. | 5th Jul 1928 | Box 17 \ 3 Scan294 | |
| Faded document with a date stamp and handwritten annotations. | 5th Jul 1928 | Box 17 \ 3 Scan295 | |
| Critiques and comparisons of a vehicle's engine, seating, and performance. | 9th Jul 1928 | Box 17 \ 3 Scan296 | |
| Modifications and testing of shock absorbers and springs. | 9th Jul 1928 | Box 17 \ 3 Scan297 | |
| Steering column dimensions for the Phantom 'E' type chassis. | 13th Jul 1928 | Box 17 \ 3 Scan298 | |
| Directive to halt work on 'B' steering for the Phantom G2B series and a note to reduce car height. | 13th Jul 1928 | Box 17 \ 3 Scan299 | |
| Confusion surrounding the cancellation of 'B' type steering for the Phantom G.2B series. | 16th Jul 1928 | Box 17 \ 3 Scan300 | |
| Awaiting instructions for modifications to car 12-EX in preparation for a 10,000 miles test. | 18th Jul 1928 | Box 17 \ 3 Scan301 | |
| Modifications and issues with the Phantom Chassis 'E' steering. | 19th Jul 1928 | Box 17 \ 3 Scan302 | |
| The timeline for fitting a higher radiator and dashboard to the 12-EX car. | 20th Jul 1928 | Box 17 \ 3 Scan303 | |
| Modifications to the 'E' type steering column and pedals for the Phantom chassis. | 21th Jul 1928 | Box 17 \ 3 Scan304 | |
| On modifications for the 16-EX sports car with a Barker body, detailing work on the steering column and ignition timing. | 26th Jul 1928 | Box 17 \ 3 Scan305 | |
| Improving the Phantom steering by increasing the wheel off-set to reduce high-speed wobbles. | 1st Mar 1928 | Box 17 \ 3 Scan306 | |
| Preliminary test results of front wheels with increased off-set to eliminate tramping and snatchy steering. | 23th Jul 1928 | Box 17 \ 3 Scan307 | |
| The unsatisfactory performance of the 900 Lead Larger Diameter 40/50 steering worm. | 6th Aug 1923 | Box 17 \ 3 Scan308 | |
| Longer steering box for an E.A.C.7 chassis to allow for greater angular movement. | 21th Aug 1928 | Box 17 \ 3 Scan309 | |
| Instructions for altering the steering box and supplying associated parts for an E.A.C.7 chassis. | 23th Aug 1928 | Box 17 \ 3 Scan310 | |
| The cancellation of 'B' type pedals and the modelling of 'D', 'E', and 'C' type pedals. | 28th Aug 1928 | Box 17 \ 3 Scan311 | |
| Driving seat positions and component specifications for 'C', 'D' and 'E' type steering. | 28th Aug 1928 | Box 17 \ 3 Scan312 | |
| Design and trial of new steering wheels for Phantom and India models, with an increased diameter. | 1st Sep 1928 | Box 17 \ 3 Scan313 | |
| Requesting an update on the status of the 'Phantom' 'E' Steering for the 12.EX chassis. | 7th Sep 1928 | Box 17 \ 3 Scan314 | |
| Fitting of Phantom 'E' steering and other jobs on the 12-EX car. | 10th Sep 1928 | Box 17 \ 3 Scan315 | |
| Modifications to steering plates and springs for testing on car 12-EX in France. | 21th Sep 1928 | Box 17 \ 3 Scan316 | |
| Requesting the modification of an attached spring drive piece for an experiment on a pendulum lever. | 26th Sep 1923 | Box 17 \ 3 Scan317 | |
| Blueprint for stops for a damped spring steering system. | 26th Sep 1928 | Box 17 \ 3 Scan318 | |
| Modification to a driving dog for damped spring steering. | 28th Sep 1928 | Box 17 \ 3 Scan319 | |
| Requesting an availability date for the Phantom 'E' Steering vehicle for sales inspection. | 5th Oct 1928 | Box 17 \ 3 Scan320 | |
| Request to arrange a trial for a damped pendulum lever on EAC. 7. | 10th Oct 1928 | Box 17 \ 3 Scan321 | |
| Design for a damped pendulum lever with leaf springs. | 18th May 1938 | Box 17 \ 3 Scan322 | |
| Method of central lubrication for the pendulum lever ball end. | 10th Oct 1928 | Box 17 \ 3 Scan323 | |
| Testing and movement of the 12-EX car in relation to 'E' Steering. | 11th Oct 1928 | Box 17 \ 3 Scan324 | |
| Standardisation of a semi-isolation scuttle scheme to prevent scuttle jellying and reduce steering column vibration. | 23th Mar 1928 | Box 17 \ 3 Scan325 | |
| Signed agreement table regarding the standardisation of coachwork features. | 20th Apr 1928 | Box 17 \ 3 Scan326 | |
| Fitting of a damped pendulum lever to vehicle EAC.7 and the associated required parts. | 17th Oct 1928 | Box 17 \ 3 Scan327 | |
| The urgent trial of a damped pendulum lever on car EAC.7. | 20th Oct 1928 | Box 17 \ 3 Scan328 | |
| Request for particulars of steering and pedals for experimental cars 21-EX, 22-EX, and 23-EX. | 12th Nov 1928 | Box 17 \ 3 Scan329 | |
| Arrangements to fit a damped pendulum lever N. sch. 2800 onto EAC.7. | 17th Oct 1928 | Box 17 \ 3 Scan330 | |
| Query regarding the availability of 'E' type steering on 12-EX for inspection in London. | 29th Oct 1928 | Box 17 \ 3 Scan331 | |
| Potential ergonomic and visibility improvements for the steering and pedal setup on chassis 12-MX. | 28th Nov 1928 | Box 17 \ 3 Scan332 | |
| Specifying the required steering column types for bodies 21EX, 22EX, and 23EXM. | 12th Nov 1928 | Box 17 \ 3 Scan333 | |
| Post Office telegram regarding steering column specifications for various models. | 13th Nov 1928 | Box 17 \ 3 Scan334 | |
| Relaying a telegram concerning 'SS' columns and special angle sports chassis. | 14th Nov 1928 | Box 17 \ 3 Scan335 | |
| Fitting and performance of shock absorbers and a damper pendulum lever on the 14-EX car. | 16th Nov 1928 | Box 17 \ 3 Scan336 | |
| Suggesting a new naming convention for steering column positions for ease of communication via telegraph. | 21th Nov 1928 | Box 17 \ 3 Scan337 | |
| Nomenclature for steering positions to avoid confusion. | 26th Nov 1928 | Box 17 \ 3 Scan338 | |
| Steering positions and body subframe requirements for 'S.S.' experimental chassis. | 1st Dec 1928 | Box 17 \ 3 Scan339 | |
| Instructing the dispatch of two subframes to coachbuilders Hooper's and Barker's for specific chassis. | 8th Dec 1928 | Box 17 \ 3 Scan340 | |
| Print for a Barker enclosed limousine body on a 'D' steering SS chassis. | 18th Dec 1928 | Box 17 \ 3 Scan341 | |
| Sending drawings for a Hooper Pullman landaulet 'C' column and seating accommodation. | 8th Dec 1928 | Box 17 \ 3 Scan342 | |
| Technical memorandum discussing issues with the 'SS' Brakes servo performance and design compared to the Phantom model. | 12th Dec 1928 | Box 17 \ 3 Scan343 | |
| Comparison of two servo designs ('40/50' and 'SS') with calculations for braking forces and efficiency. | 12th Dec 1928 | Box 17 \ 3 Scan344 | |
| Brake servo performance, modifications to cams and levers, and chassis weight savings for the SS model. | 12th Dec 1928 | Box 17 \ 3 Scan345 | |
| Page of calculations and analysis regarding servo braking efficiency for car 18-EX, comparing different cam angles. | 21th Dec 1928 | Box 17 \ 3 Scan346 | |
| Correction notice regarding steering positions for models 21-EX and 22-EX. | 21th Dec 1928 | Box 17 \ 3 Scan347 | |
| Modifications to the frame to resolve difficulties in withdrawing the 'SS' steering assembly. | 29th Dec 1928 | Box 17 \ 3 Scan348 | |
| Tests of an 'SS' engine mounting using rubber strips to reduce vibration. | 9th Jan 1929 | Box 17 \ 3 Scan349 | |
| Experiments with rubber isolated engine mountings to reduce engine roughness and vibrations. | 1st Jan 1929 | Box 17 \ 3 Scan350 | |
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