| Description | Date | Identifier | |
| Specifications for front and rear springs, damper loads, car weight, and buffer clearances. | 7th Mar 1931 | Box 18 \ 3 Scan220 | |
| From Hs. to Hn. regarding a delay in getting springs for car 110-DC. | 9th Mar 1931 | Box 18 \ 3 Scan221 | |
| The return of car No. 110-DC to Lillie Hall. | 27th Mar 1931 | Box 18 \ 3 Scan222 | |
| Advising of a two-week delay in releasing a car as the new springs required alteration. | 31th Mar 1931 | Box 18 \ 3 Scan223 | |
| Arranging vehicle tests at Brooklands Track, detailing the cars involved and logistical plans. | 13th Apr 1931 | Box 18 \ 3 Scan224 | |
| Requesting an exact date for the return of a car. | 17th Apr 1931 | Box 18 \ 3 Scan225 | |
| Suggestion to send a car to Cricklewood for decarbonising and an engine condition report. | 18th Apr 1931 | Box 18 \ 3 Scan226 | |
| Cost request for converting standard front brakes to the anti-squeak type on a Phantom II. | 22th Apr 1931 | Box 18 \ 3 Scan227 | |
| Effects on car 58-GN after removing its rear engine feet, particularly regarding noise and vibration. | 24th Apr 1931 | Box 18 \ 3 Scan228 | |
| Relaying a telegram about a conference on crankshaft torsional periods and damper design. | 24th Apr 1931 | Box 18 \ 3 Scan229 | |
| Return of car 110-DC to London. | 28th Apr 1931 | Box 18 \ 3 Scan230 | |
| Letter chasing the return of a second-hand car used for experiments. | 28th Apr 1931 | Box 18 \ 3 Scan231 | |
| Recommendation for ordering road springs for a trials car, detailing front and rear specifications. | 29th Apr 1931 | Box 18 \ 3 Scan232 | |
| Experiment to improve the springing and ride comfort on Phantom I chassis 110-DC. | 30th Apr 1931 | Box 18 \ 3 Scan233 | |
| The springing and handling characteristics of chassis No. 110-DC. | 30th Apr 1931 | Box 18 \ 3 Scan234 | |
| The endurance and silence testing of a pair of rear hydraulic shock absorbers. | 8th May 1931 | Box 18 \ 3 Scan235 | |
| Arrangement to fit Hydraulic Shock Absorbers to car 129-GN for London Trials. | 11th May 1931 | Box 18 \ 3 Scan236 | |
| Chassis alterations required to create a Trials Car for demonstration purposes. | 14th May 1931 | Box 18 \ 3 Scan237 | |
| Despatch of a pair of improved shock absorbers for car 129-GN. | 16th May 1931 | Box 18 \ 3 Scan238 | |
| The despatch of one pair of 40/50 rear shock absorbers for experimental testing. | 16th May 1931 | Box 18 \ 3 Scan239 | |
| Preparation of the 23-EX car for sale and the disposal of its body and oil filter. | 16th May 1931 | Box 18 \ 3 Scan240 | |
| Instructions and blueprint for fitting a side spare wheel carrier bracket to the dash of chassis 58-GN. | 16th May 1931 | Box 18 \ 3 Scan241 | |
| Despatch and fitting of new type rear shock absorbers for vehicle 129-GN. | 20th May 1931 | Box 18 \ 3 Scan242 | |
| Proposal to test a higher axle ratio on a Phantom II Continental model, comparing it with the 26-EX and 27-EX cars. | 21th May 1931 | Box 18 \ 3 Scan243 | |
| The fitting of a higher gear axle to a Phantom II Continental Model, car 26-EX, for trials and a Brooklands test. | 27th May 1931 | Box 18 \ 3 Scan244 | |
| Axle compatibility between experimental cars 26-EX and 27-EX for the Phantom II Continental Model. | 28th May 1931 | Box 18 \ 3 Scan245 | |
| Requesting improved wider brake drums for car 26-EX and new car 31-GX. | 28th May 1931 | Box 18 \ 3 Scan246 | |
| From Hs to Mx regarding the alteration of brakes on Trials Cars, referencing a previous job on Mr. Thistlewaite's and Fairey's cars. | 29th May 1931 | Box 18 \ 3 Scan247 | |
| Dispatch of ball ends for shock absorbers to be fitted to car 129-GN. | 29th May 1931 | Box 18 \ 3 Scan248 | |
| Organising comparative acceleration tests for a Phantom II car with standard and higher geared axles. | 29th May 1931 | Box 18 \ 3 Scan249 | |
| Springing specifications for car 58-GN, including spring loads, damper settings, clearances, and overall weight. | 17th Jun 1931 | Box 18 \ 3 Scan250 | |
| Confirmation of a telephone conversation requesting Hartford shock absorbers for car 58-GN. | 15th Jul 1931 | Box 18 \ 3 Scan251 | |
| Refitting of Hartford Shock Absorbers for vehicle 58 GN and the despatch of the parts. | 16th Jul 1931 | Box 18 \ 3 Scan252 | |
| Sending a set of Hartford Shock Absorbers, originally from car 58 GN, to the Sales Department. | 16th Jul 1931 | Box 18 \ 3 Scan253 | |
| Requesting suggestions regarding a car issue, following an attached memo from 'Sg'. | 19th Jul 1931 | Box 18 \ 3 Scan254 | |
| The poor performance of car 58-GN and a request for it to be improved. | 17th Jul 1931 | Box 18 \ 3 Scan255 | |
| Alleged loss of performance in a car, suggesting a dynamometer test and speculating on potential causes. | 20th Jul 1931 | Box 18 \ 3 Scan256 | |
| Testing of experimental car 19-EX fitted with a new type of engine. | 24th Jul 1931 | Box 18 \ 3 Scan257 | |
| The arrangement of car 19-EX for PN's use during the holidays. | 24th Jul 1931 | Box 18 \ 3 Scan258 | |
| Confirming a telephone conversation regarding the return of car 19-EX. | 6th Aug 1931 | Box 18 \ 3 Scan259 | |
| Short memo confirming a car will be delivered on the morning of the 8th. | 7th Aug 1931 | Box 18 \ 3 Scan260 | |
| From PN detailing issues found during a test drive of car 19-EX, including engine sounds and a faulty starter switch. | 10th Aug 1931 | Box 18 \ 3 Scan261 | |
| The replacement or adjustment of shock absorbers for car 58-GN. | 1st Aug 1931 | Box 18 \ 3 Scan262 | |
| Requesting confirmation for the arrival of car 25-EX in Paris to coordinate with Derby officials. | 18th Aug 1931 | Box 18 \ 3 Scan263 | |
| Report on the reconditioning of shock dampers for Chassis No. 129-GN. | 26th Aug 1931 | Box 18 \ 3 Scan264 | |
| Experimental work on shock absorbers for chassis 129-GN. | 27th Aug 1931 | Box 18 \ 3 Scan265 | |
| Design and benefits of Diamond engine mounting for a 40/50 HP vehicle. | 29th Sep 1931 | Box 18 \ 3 Scan266 | |
| Design of diamond engine mountings and scheduling for chassis 58-GN. | 10th Sep 1931 | Box 18 \ 3 Scan267 | |
| Car 58-GN being sent to Derby for a diamond mounting to be fitted and for investigation of a steering rattle and a squeak. | 14th Sep 1931 | Box 18 \ 3 Scan268 | |
| From Sg. to Hs. regarding a change of arrangements for sending car 58-GN to Derby. | 16th Sep 1931 | Box 18 \ 3 Scan269 | |
| The recurrence of an unbearable booming noise in car 129-GN, which requires an urgent fix for the Motor Show. | 28th Sep 1931 | Box 18 \ 3 Scan270 | |
| London trials for car 129-GN. | 30th Sep 1931 | Box 18 \ 3 Scan271 | |
| Performance issues such as hard suspension, engine torque, noise, and vibrations on Mr. Sidgreaves' car, with suggested modifications. | 11th Oct 1931 | Box 18 \ 3 Scan272 | |
| 40/50 springing, advising against increasing front damping and confirming an experiment to fit new dampers. | 1st Oct 1931 | Box 18 \ 3 Scan273 | |
| The incorporation of Diamond mounting for the central radiator. | 2nd Oct 1931 | Box 18 \ 3 Scan274 | |
| Requesting examination of a rear axle whistle and a steering column knock on car 58-GN. | 2nd Oct 1931 | Box 18 \ 3 Scan275 | |
| Experimental trials for car 129-GN, focusing on reducing excessive drumming, booming, and steering-wheel vibration. | 2nd Oct 1931 | Box 18 \ 3 Scan276 | |
| Experiment involving a thinner disc and diamond mounting for a flywheel, with associated travel plans. | 5th Oct 1931 | Box 18 \ 3 Scan277 | |
| Potential fitting of an experimental thinner flywheel disc to car 58-GN. | 6th Oct 1931 | Box 18 \ 3 Scan278 | |
| Issues with loose shock damper levers, cross steering tube, and bonnet clearances on car 58-GN. | 6th Oct 1931 | Box 18 \ 3 Scan279 | |
| Demonstration run in Glasgow for Lady Mackie and its importance for a potential order. | 9th Oct 1931 | Box 18 \ 3 Scan280 | |
| Fitting drilled valves in rear shock absorbers for a trial run and testing experimental adjustable shock absorbers. | 2nd Oct 1931 | Box 18 \ 3 Scan281 | |
| Arranging a demonstration run in Edinburgh for a prospective buyer, focusing on the car's springing. | 9th Oct 1931 | Box 18 \ 3 Scan282 | |
| Challenges of determining customer requirements for car springing. | 13th Oct 1931 | Box 18 \ 3 Scan283 | |
| Urgent transfer of car 23-EX for modifications to reduce roughness and vibrations ahead of the Motor Show. | 13th Oct 1931 | Box 18 \ 3 Scan284 | |
| Modifications to reduce booms and issues with a spare wheel carrier bracket on the 23-EX trials car. | 4th Oct 1931 | Box 18 \ 3 Scan285 | |
| Improvement of drumming and noise issues in a Phantom II car for demonstration purposes. | 20th Oct 1931 | Box 18 \ 3 Scan286 | |
| Chasing the delivery of parts for Chassis 23 EX - Trials Car. | 22th Oct 1931 | Box 18 \ 3 Scan287 | |
| Persistent 'canary' type squeaking noise in car 58-GN. | 26th Oct 1931 | Box 18 \ 3 Scan288 | |
| Results of fitting a Diamond Mounting to car 56-GN. | 26th Oct 1931 | Box 18 \ 3 Scan289 | |
| Confirming the despatch of parts for the 23-EX trials car chassis. | 29th Oct 1931 | Box 18 \ 3 Scan290 | |
| Follow-up memo regarding the dispatch of parts for Chassis 23 EX - Trials Car. | 29th Oct 1931 | Box 18 \ 3 Scan291 | |
| Recurring noise from a rear axle, detailing a previous repair and suggesting further investigation of the universal joint. | 30th Oct 1931 | Box 18 \ 3 Scan292 | |
| Confirming the successful repair of a squeak by truing up a driving flange. | 2nd Nov 1931 | Box 18 \ 3 Scan293 | |
| Request to prepare and dispatch parts for the 129.GN trials car to Cricklewood. | 3rd Nov 1931 | Box 18 \ 3 Scan294 | |
| Requesting further information regarding a squeak in a rear axle caused by fouling parts. | 4th Nov 1931 | Box 18 \ 3 Scan295 | |
| The cause and fix for a rear axle squeak on Chassis No.58-GN during trials. | 6th Nov 1931 | Box 18 \ 3 Scan296 | |
| Improving the high-speed performance of the Continental Phantom II car by modifying the air silencer. | 13th Nov 1931 | Box 18 \ 3 Scan297 | |
| Internal memorandum regarding the despatch of parts for car 129 GN sales trials. | 16th Nov 1931 | Box 18 \ 3 Scan298 | |
| Request to prepare two aluminium packings for the frame to fit engine Hs-464 onto car 58-GN. | 1st Dec 1931 | Box 18 \ 3 Scan299 | |
| The unavailability of the Continental Trials car for an appointment. | 9th Dec 1931 | Box 18 \ 3 Scan300 | |
| Request to borrow car 58-GN to reduce pedal movement. | 14th Dec 1931 | Box 18 \ 3 Scan301 | |
| Arranging for car 58-GN to be available for a modification to reduce pedal movement. | 15th Dec 1931 | Box 18 \ 3 Scan302 | |
| Potential use of car 18-G4 as a demonstration model after completing its next 10,000 miles. | 8th Jan 1932 | Box 18 \ 3 Scan303 | |
| Premature renewal of Servo halos due to the working surfaces becoming highly glazed and hard-faced on a trials car and a Phantom II. | 9th Jan 1932 | Box 18 \ 3 Scan304 | |
| Responding to a complaint about the brakes on the 31-GX trials car, mentioning performance of other vehicles. | 9th Jan 1932 | Box 18 \ 3 Scan305 | |
| The embarrassing return of car 31-GX to the coachbuilders due to unsatisfactory frame and radiator vibration after being sold. | 23th Feb 1932 | Box 18 \ 3 Scan306 | |
| 'jellying' complaint with the London Trials Car 60-JS, requiring investigation by the Experimental Shop. | 24th Feb 1932 | Box 18 \ 3 Scan307 | |
| Proposing a meeting to discuss chassis 60-JS and its testing with diamond engine mounting, and requesting a car. | 25th Feb 1932 | Box 18 \ 3 Scan308 | |
| Examination report on the first production diamond engine car, listing faults and recommended modifications. | 8th Mar 1932 | Box 18 \ 3 Scan309 | |
| Instructions for radiator mounting adjustments and part replacements to ensure correct clearance and movement. | 8th Mar 1932 | Box 18 \ 3 Scan310 | |
| Technical note warning against using specific parts together due to the risk of excessive load. | 8th Mar 1932 | Box 18 \ 3 Scan311 | |
| Completion of car 60-JS, and arranging testing at Brooklands and delivery. | 1st Mar 1932 | Box 18 \ 3 Scan312 | |
| Improvements and ongoing issues with the Phantom II Diamond Mounted Engine Chassis, focusing on 'front jellying' and suspension. | 11th Mar 1932 | Box 18 \ 3 Scan313 | |
| Radiator jellying and the non-standardized 'shimmy-shackle' fixing during car testing. | 11th Mar 1932 | Box 18 \ 3 Scan314 | |
| Request for two springs for two Phantom II demonstration cars to be used in thermostat control trials. | 11th Mar 1932 | Box 18 \ 3 Scan315 | |
| Damage to the coachwork and upholstery of the New Trials Continental Saloon No. 60-JS. | 15th Mar 1932 | Box 18 \ 3 Scan316 | |
| Follow-up on the supply and fitting of a shimmy shackle for a Phantom II steering system. | 23th Mar 1932 | Box 18 \ 3 Scan317 | |
| Despatching springs for thermostat control trials on specific cars. | 23th Mar 1932 | Box 18 \ 3 Scan318 | |
| Typed note confirming an arrangement to meet at Conduit St. | 24th Mar 1932 | Box 18 \ 3 Scan319 | |
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