| Description | Date | Identifier | |
| From PN requesting confirmation that a car will be available for a trip to the North, starting on the 8th of the month. | 2nd Jul 1930 | Box 18 \ 3 Scan120 | |
| Letter detailing arrangements for returning chassis 12-XJ for bodywork examination, repairs, and modifications. | 1st Jul 1930 | Box 18 \ 3 Scan121 | |
| Delay in preparing a left-hand drive car and arranging a replacement vehicle, 23-EX. | 2nd Jul 1930 | Box 18 \ 3 Scan122 | |
| Confirmation of the safe arrival of Sale Propaganda Car chassis No. 12-XJ and arrangements for testing by Thrupp & Maberly Ltd. | 2nd Jul 1930 | Box 18 \ 3 Scan123 | |
| The body condition of Propaganda Car 12-XJ after a 10,000-mile tour, noting rattles due to its unsuitable body type. | 3rd Jul 1930 | Box 18 \ 3 Scan124 | |
| The causes of rattles in the front of a car and cracks in the windscreen. | 1st Jul 1930 | Box 18 \ 3 Scan125 | |
| Vehicle body and chassis issues, including rattles, clearances, and component breakages. | 3rd Jul 1930 | Box 18 \ 3 Scan126 | |
| Damage to a vehicle's rear axle, wheel carrier, petrol tank, and undersheets. | 3rd Jul 1930 | Box 18 \ 3 Scan127 | |
| Message from PN arranging a visit to Derby and the delivery of car 23-EX to a hotel. | 4th Jul 1930 | Box 18 \ 3 Scan128 | |
| Correspondence regarding the removal of the body from Propaganda Car chassis No. 12-XJ. | 9th Jul 1930 | Box 18 \ 3 Scan129 | |
| Letter providing an update on the progress of a tour with Lord Wargrave. | 12th Jul 1930 | Box 18 \ 3 Scan130 | |
| Request for an update on a car's status following a report made at 9,000 miles. | 18th Jul 1930 | Box 18 \ 3 Scan131 | |
| Sending a special Autovac head with a larger drop valve to be fitted to a customer's car. | 19th Jul 1930 | Box 18 \ 3 Scan132 | |
| The completion of 9,000 miles of testing by the Experimental Department and subsequent reports. | 23th Jul 1930 | Box 18 \ 3 Scan133 | |
| Fitting a new Autovac Head to car 58-GN for trials and asking for instructions regarding the old part. | 23th Jul 1930 | Box 18 \ 3 Scan134 | |
| Investigation into a faulty Telegage on car 1-WJ, including an extract from H. M. Hobson Ltd. | 30th Jul 1930 | Box 18 \ 3 Scan135 | |
| Communications regarding the suitability of chassis 129 GN for use as a Trials Car. | 9th Aug 1930 | Box 18 \ 3 Scan136 | |
| Suitability of a car's body for a 'Trials Car' and considering a body swap. | 9th Aug 1930 | Box 18 \ 3 Scan137 | |
| Request to return an old autovac from the 58-GN Sg. trials car. | 1st Aug 1930 | Box 18 \ 3 Scan138 | |
| Arrangement to return an old Autovac from car 58-GN following trials. | 13th Aug 1930 | Box 18 \ 3 Scan139 | |
| Modifications to a 40/50 bump chassis for testing purposes. | 16th Aug 1930 | Box 18 \ 3 Scan140 | |
| Engine harshness and vibration issues with chassis 129-GN during London Trials. | 18th Aug 1930 | Box 18 \ 3 Scan141 | |
| Engine timing and suggestions for dealing with instrument board vibrations. | 20th Aug 1930 | Box 18 \ 3 Scan142 | |
| Disappointing performance of demonstration car 129-GN during London Trials and potential solutions. | 20th Aug 1930 | Box 18 \ 3 Scan143 | |
| Chassis and engine changeovers for the 129-GN London Trials. | 21th Aug 1930 | Box 18 \ 3 Scan144 | |
| Correcting a typo from 'gearbox' to 'car' in a previous report regarding the London Trials. | 21th Aug 1930 | Box 18 \ 3 Scan145 | |
| Springing of a Phantom II, offering to improve the suspension. | 3rd Sep 1930 | Box 18 \ 3 Scan146 | |
| Phantom II car (129-GN) with excessive vibration issues, deeming it unsuitable for trials or sale. | 24th Sep 1930 | Box 18 \ 3 Scan147 | |
| Recommending the standardisation of a single point radiator mounting to cure 'jellying'. | 5th Sep 1930 | Box 18 \ 3 Scan148 | |
| Car with very bad vibrations, deeming it unsuitable for trials or sale and suggesting its return to Darby for improvement. | 5th Sep 1930 | Box 18 \ 3 Scan149 | |
| Fitting a device to prevent brake squeaks to trial cars. | 5th Sep 1930 | Box 18 \ 3 Scan150 | |
| Phantom II springing, engine detonation, and brake issues. | 5th Sep 1930 | Box 18 \ 3 Scan151 | |
| Sending car 129-GH for a test drive to assess a complaint, along with car 58-GH for comparison. | 8th Sep 1930 | Box 18 \ 3 Scan152 | |
| Fitting of special anti-squeak shoes to the brake system of a car. | 9th Sep 1930 | Box 18 \ 3 Scan153 | |
| Fitting standardised radiator mounting pieces to cars 1-WJ and 80-WJ in place of temporary ones. | 9th Sep 1930 | Box 18 \ 3 Scan154 | |
| Comparison report on vibration and noise issues between vehicles 129-GN and 58-GN. | 10th Sep 1930 | Box 18 \ 3 Scan155 | |
| Revised delivery time for a car to allow for work on the suspension. | 10th Sep 1930 | Box 18 \ 3 Scan156 | |
| Arrangements to fit new radiator support fittings to two cars, including the late Sir Henry Segrave's. | 13th Sep 1930 | Box 18 \ 3 Scan157 | |
| Standardization and replacement of experimental centre point radiator mountings. | 15th Sep 1930 | Box 18 \ 3 Scan158 | |
| Comparing cars 129-GN and 58-GN during London trials, assessing improvements in noise and vibration. | 15th Sep 1930 | Box 18 \ 3 Scan159 | |
| Work done to overcome a complaint of torque reaction or low speed vibration on vehicle 129-GN. | 15th Sep 1930 | Box 18 \ 3 Scan160 | |
| Arranging a meeting for vehicles 129-GN and 68-GN at Bignalls Corner. | 16th Sep 1930 | Box 18 \ 3 Scan161 | |
| Vehicle trials to address torque reaction and low-speed vibrations on car 129-GN. | 16th Sep 1930 | Box 18 \ 3 Scan162 | |
| The availability of cars 80-WJ and 1-WJ for fitting radiator suspension parts. | 18th Sep 1930 | Box 18 \ 3 Scan163 | |
| Springing modifications for a Phantom II, car 58-GN. | 19th Sep 1930 | Box 18 \ 3 Scan164 | |
| Continuation of a letter regarding arrangements to obtain a car from an owner. | 19th Sep 1930 | Box 18 \ 3 Scan165 | |
| Comparing chassis 129-GH with 58-GW, detailing a successful method for reducing engine roughness using denser rubber. | 19th Sep 1930 | Box 18 \ 3 Scan166 | |
| Harsh ride quality and appearance of a car after new front springs were fitted. | 3rd Oct 1930 | Box 18 \ 3 Scan167 | |
| Test drive report on car 58-GN, focusing on front spring performance and suggesting improvements. | 4th Oct 1930 | Box 18 \ 3 Scan168 | |
| Response regarding a customer's dissatisfaction with suspension alterations and a proposal for further work. | 9th Oct 1930 | Box 18 \ 3 Scan169 | |
| From Sg. to Hs. concerning the springing on car 58-GN, enclosing a report and discussing the replacement of front springs. | 10th Oct 1930 | Box 18 \ 3 Scan170 | |
| Spring changes and carburettor modifications for car 58-GN. | 13th Oct 1930 | Box 18 \ 3 Scan171 | |
| Changing springs, fitting an air silencer, and testing performance for car 58-GN at Brooklands. | 15th Oct 1930 | Box 18 \ 3 Scan172 | |
| Typed memo from 'Sg' to 'Hs' arranging a meeting on Thursday the 23rd at the Watford bypass road. | 18th Oct 1930 | Box 18 \ 3 Scan173 | |
| Timeline for modified springs for car 58-GN and the results of speed tests at Brooklands. | 18th Oct 1930 | Box 18 \ 3 Scan174 | |
| Arranging a meeting with experimental cars 25-EX and 22-EX. | 22th Oct 1930 | Box 18 \ 3 Scan175 | |
| The London Trials of car 129-GN, discussing issues with roughness and body-boom. | 23th Oct 1930 | Box 18 \ 3 Scan176 | |
| Suggesting the return of car 120-GN from the London Trials for further investigation. | 27th Oct 1930 | Box 18 \ 3 Scan177 | |
| Suspension modifications and a proposed new carburetter fitting for Sg's 40/50 car. | 30th Oct 1930 | Box 18 \ 3 Scan178 | |
| Request to keep car 58-GN until the end of the week to test different spring combinations. | 3rd Nov 1930 | Box 18 \ 3 Scan179 | |
| Requesting a telephone call for an update on when a car can be returned. | 3rd Nov 1930 | Box 18 \ 3 Scan180 | |
| Confirming arrangements to keep an item until Friday and instructions for delivery to Lillie Hall. | 4th Nov 1970 | Box 18 \ 3 Scan181 | |
| Spring modifications on car 58-GN to improve ride comfort. | 7th Nov 1930 | Box 18 \ 3 Scan182 | |
| Springing alterations and new parts fitted to car 58-GN. | 11th Nov 1930 | Box 18 \ 3 Scan183 | |
| Investigations into springing on car 58-GX and the 20/25 HP chassis. | 11th Nov 1930 | Box 18 \ 3 Scan184 | |
| The springing and shock absorber setup and subsequent alterations for car 58-GN. | 11th Nov 1930 | Box 18 \ 3 Scan185 | |
| Modifications and tests performed on the car's suspension damping system. | 11th Nov 1930 | Box 18 \ 3 Scan186 | |
| Test report on vehicle suspension performance, analyzing the effects of low-rating springs and various damping configurations. | 11th Nov 1930 | Box 18 \ 3 Scan187 | |
| Rear suspension and damping modifications and proposed comfort testing methods. | 13th Nov 1930 | Box 18 \ 3 Scan188 | |
| Feedback on the car's springing and dissatisfaction with the Klaxon vibrator horn on car 58-GN, proposing a test of a different model. | 13th Nov 1930 | Box 18 \ 3 Scan189 | |
| Response regarding a customer's dislike of a Klaxon horn, suggesting an adjustment before removal. | 14th Nov 1930 | Box 18 \ 3 Scan190 | |
| Customer dissatisfaction with a Klaxon horn's sound, leading to a hold on its standardization. | 19th Nov 1930 | Box 18 \ 3 Scan191 | |
| Performance of springs fitted to chassis 58-GN and plans for further testing. | 21th Nov 1930 | Box 18 \ 3 Scan192 | |
| Replacing a Two-Note Klaxon with a vibrator horn on chassis 58-GN. | 21th Nov 1930 | Box 18 \ 3 Scan193 | |
| Reporting dissatisfaction with the performance of a Two-Note Klaxon Horn. | 21th Nov 1930 | Box 18 \ 3 Scan194 | |
| Request to redirect a car horn that was inadvertently sent to the wrong location. | 24th Nov 1930 | Box 18 \ 3 Scan195 | |
| Reminding a recipient of their plan to change the front springs from 5.5 to 4.5 for vehicle 58-GN. | 16th Dec 1930 | Box 18 \ 3 Scan196 | |
| Delivery status of a pair of 4.5' deflection front springs for Cricklewood. | 16th Dec 1930 | Box 18 \ 3 Scan197 | |
| Flexible bracket issue with the Phantom II extra cylinder lubrication controls and proposing a solution. | 17th Dec 1930 | Box 18 \ 3 Scan198 | |
| Dispatch and testing of low rating road springs. | 23th Dec 1930 | Box 18 \ 3 Scan199 | |
| Instruction for Messrs. Sanderson & Holmes to carry out work on Chassis No. 58-GN. | 24th Dec 1930 | Box 18 \ 3 Scan200 | |
| Seeking clarification on the correct specification of rear road springs for cars intended for the American market. | 29th Dec 1930 | Box 18 \ 3 Scan201 | |
| Arranging the delivery of car 58-GN for spring-related work. | 29th Dec 1930 | Box 18 \ 3 Scan202 | |
| Rear spring deflection specifications for cars intended for the American market versus English conditions. | 30th Dec 1930 | Box 18 \ 3 Scan203 | |
| Car 129-GN being sent for inspection due to increased roughness and torque reaction. | 14th Jan 1931 | Box 18 \ 3 Scan204 | |
| Offering a secondhand Phantom I car for experimental spring tests. | 16th Jan 1931 | Box 18 \ 3 Scan205 | |
| Unsuitability of a Weymann body for springing tests and requesting a standard metal panelled body for a Phantom I car. | 19th Jan 1931 | Box 18 \ 3 Scan206 | |
| The provision and licensing of a Phantom I car. | 21th Jan 1931 | Box 18 \ 3 Scan207 | |
| The urgent delivery of a Phantom 1 car without it being licenced. | 23th Jan 1931 | Box 18 \ 3 Scan208 | |
| The status and potential sale of a Phantom I car, reference 110-DC. | 26th Jan 1931 | Box 18 \ 3 Scan209 | |
| Two alternative solutions for a customer's car issue, involving demonstrator vehicles and a new experimental engine mounting. | 9th Feb 1931 | Box 18 \ 3 Scan210 | |
| Urgent fitting and testing of a new engine mounting on car 100-GY and the resulting delivery schedule. | 10th Feb 1931 | Box 18 \ 3 Scan211 | |
| Confirming the despatch of a car and coordinating further coachwork with Hoopers. | 13th Feb 1931 | Box 18 \ 3 Scan212 | |
| Customer complaint from Mr. Davies, specifically concerning the car body. | 13th Feb 1931 | Box 18 \ 3 Scan213 | |
| Customer complaint letter detailing a list of faults with their car, including body drumming and a leaking windscreen. | 12th Feb 1931 | Box 18 \ 3 Scan214 | |
| Page 2 of a letter from J.W. Davies regarding faults with their car and suggesting test procedures. | 17th Feb 1931 | Box 18 \ 3 Scan215 | |
| Coachwork items for chassis 100-GY, referencing a letter from Mr. Davies. | 17th Feb 1931 | Box 18 \ 3 Scan216 | |
| Short memo about coachwork and changing over to a new chassis for car 100-GY. | 16th Feb 1931 | Box 18 \ 3 Scan217 | |
| Fitting Canadian Pattern Dunlop Tyres to car 58-GN. | 18th Feb 1931 | Box 18 \ 3 Scan218 | |
| Typed memo regarding the return of Phantom I Chassis No.110-DC after springing experiments. | 5th Feb 1931 | Box 18 \ 3 Scan219 | |
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