| Description | Date | Identifier | |
| Order for Phantom II front and rear road springs with specific dimensions. | 6th Jan 1930 | Box 11 \ 3 03-page022 | |
| Requesting an update on the status of a Phantom II car's 10,000 Miles Test. | 15th Jan 1930 | Box 11 \ 3 03-page023 | |
| Readiness of a car for the Phantom II 10,000 mile test. | 16th Jan 1930 | Box 11 \ 3 03-page024 | |
| Supplier issue with stiffer rear springs for a Phantom II, resulting in the need to use standard springs. | 20th Jan 1930 | Box 11 \ 3 03-page025 | |
| Petrol feed problems on the Phantom II and proposed solutions. | 27th Jan 1930 | Box 11 \ 3 03-page026 | |
| Radiator 'jelly-ing' on the 40/50 model and a proposed new rubber support for testing. | 5th Feb 1930 | Box 11 \ 3 03-page027 | |
| The start date and specifications for a Phantom II 10,000-mile test car. | 3rd Feb 1930 | Box 11 \ 3 03-page028 | |
| Chasing a reply regarding the delayed start of the Phantom II 10,000-mile test car. | 13th Feb 1930 | Box 11 \ 3 03-page029 | |
| Delays and issues with the Phantom II 10,000-mile test car. | 13th Feb 1930 | Box 11 \ 3 03-page030 | |
| Delay in the Phantom II 10,000-mile test to investigate a solution for radiator jellying. | 17th Feb 1930 | Box 11 \ 3 03-page031 | |
| Inquiry about the readiness of a Phantom II car for a 10,000-mile trial, highlighting its importance for the American market chassis. | 10th Mar 1930 | Box 11 \ 3 03-page032 | |
| Proposal to fit an experimental Nivex petrol gauge to vehicle 23-EX, with a standard K.S. gauge as a backup. | 18th Mar 1930 | Box 11 \ 3 03-page033 | |
| Request to fit a fabric coupling to car 23-EX for a 10,000 miles test. | 18th Mar 1930 | Box 11 \ 3 03-page034 | |
| Request to source Shell lubricating oil in Chateauroux, France, for the 23-EX car. | 19th Mar 1930 | Box 11 \ 3 03-page035 | |
| Instruction to modify the front brakes on vehicle 23-EX by fitting unchamfered linings and substituting brake drums from 20-EX. | 28th Mar 1930 | Box 11 \ 3 03-page036 | |
| Arrangements for a 10,000-mile test of the Phantom II test car 23-EX in France. | 9th Apr 1930 | Box 11 \ 3 03-page037 | |
| List of features for Chassis 23-EX undergoing a 10,000-mile trial. | 9th Apr 1930 | Box 11 \ 3 03-page038 | |
| 10,000-mile test for the first left-handed Phantom II chassis, 23-EX, and related modifications. | 9th Apr 1930 | Box 11 \ 3 03-page039 | |
| Confirmation to fit half Silchrome and half Firth's Crown Steel valves to model 23-EX. | 9th Apr 1930 | Box 11 \ 3 03-page040 | |
| Letter arranging the transport of car 23-EX to Boulogne and the handling of its customs papers. | 14th Apr 1930 | Box 11 \ 3 03-page041 | |
| Typed memo from G.W.H. to Hs regarding oil recommendations and testing procedures for an engine. | 19th Apr 1930 | Box 11 \ 3 03-page042 | |
| The investigation of a seized exhaust cut-out and a battery box failure. | 20th Apr 1930 | Box 11 \ 3 03-page043 | |
| Vehicle faults and proposed rectifications for chassis 23-EX. | 22th Apr 1930 | Box 11 \ 3 03-page044 | |
| Test report detailing multiple vehicle faults including issues with the road springs, rear axle, engine, and exhaust. | 24th Nov 1914 | Box 11 \ 3 03-page045 | |
| Road test report from Châteauroux detailing issues with buffer clearance, carburetion, oil pressure, steering, and suspension. | 21th Apr 1930 | Box 11 \ 3 03-page046 | |
| The cause of valve failure due to decreasing clearance over mileage during continental touring. | 2nd Apr 1930 | Box 11 \ 3 03-page047 | |
| The failure of a battery box flange on chassis 23-EX and its replacement with a reinforced part. | 23th Apr 1930 | Box 11 \ 3 03-page048 | |
| Drawing of a battery box with annotations for a broken flange and a reinforced bracket. | 23th Apr 1930 | Box 11 \ 3 03-page049 | |
| Quoting an investigation into an exhaust cut out seizure and a battery box failure on a 23-EX car. | 24th Apr 1930 | Box 11 \ 3 03-page050 | |
| Testing cold-start oil supply, steering characteristics, and front brakes from Châteauroux, France. | 25th Apr 1930 | Box 11 \ 3 03-page051 | |
| Road test report detailing numerous mechanical and performance issues including damping, speed, fuel consumption, and clutch problems. | 25th Apr 1930 | Box 11 \ 3 03-page052 | |
| Various faults and required alterations on a car's carburetter, brakes, and engine components. | 25th Apr 1930 | Box 11 \ 3 03-page053 | |
| Faults and observations on various vehicle components during testing. | 26th Apr 1930 | Box 11 \ 3 03-page054 | |
| Serious radiator and engine trouble with a choked radiator during a vehicle test run. | 26th Apr 1930 | Box 11 \ 3 03-page055 | |
| Clearing a blocked radiator which required its complete removal to be flushed out. | 27th Apr 1930 | Box 11 \ 3 03-page056 | |
| 10,000-mile test of a special gauze radiator filter to gain experience. | 26th Apr 1930 | Box 11 \ 3 03-page057 | |
| Letter addressing an overheating issue, suggesting the removal of a filter and investigating a potential chemical blockage in the radiator. | 30th Apr 1930 | Box 11 \ 3 03-page058 | |
| Oil leak from an axle and the testing of a vented axle plug as a cure. | 30th Apr 1930 | Box 11 \ 3 03-page059 | |
| Comparison of the springing and ride quality between experimental cars 23-EX and 24-EX. | 16th May 1930 | Box 11 \ 3 03-page060 | |
| Communication explaining the difference between two types of vehicle springing on model 23-EX. | 26th Apr 1930 | Box 11 \ 3 03-page061 | |
| Requesting information and test results for the '10,000 MILE CARS'. | 26th Apr 1930 | Box 11 \ 3 03-page062 | |
| Axle failures due to oil loss and requesting a general vehicle systems check. | 29th Apr 1930 | Box 11 \ 3 03-page063 | |
| Request to dispatch a vented plug for an axle and a larger capacity Bijur pump to G.W. Hancock. | 29th Apr 1930 | Box 11 \ 3 03-page064 | |
| Inquiry regarding a sample of foreign matter from the filter of engine 23-EX, questioning if it is due to galvanised cylinders. | 30th Apr 1930 | Box 11 \ 3 03-page065 | |
| High radiator temperature during a 10,000-mile test, possibly caused by a restrictive radiator filter. | 30th Apr 1930 | Box 11 \ 3 03-page066 | |
| Vehicle testing, detailing overheating issues with car 23-EX and proposed solutions for front brake squeaks. | 17th May 1930 | Box 11 \ 3 03-page067 | |
| New design to eliminate brake squeaks on trailing and leading shoes. | 1st May 1930 | Box 11 \ 3 03-page068 | |
| High radiator temperature on car 28-EX, questioning test conditions and the potential role of a radiator filter. | 1st May 1930 | Box 11 \ 3 03-page069 | |
| Squeaking rear spring, its lack of lubrication, and a query about leaf spring clearances. | 4th May 1930 | Box 11 \ 3 03-page070 | |
| The examination of the centre point lubrication system, noting specific findings for the front and rear axles. | 2nd May 1930 | Box 11 \ 3 03-page071 | |
| Overheating, suspension, and brake issues on vehicle 21-EX during road testing. | 2nd May 1930 | Box 11 \ 3 03-page072 | |
| Knocking front shock damper due to wear, and the subsequent increase of the HP load. | 3rd May 1930 | Box 11 \ 3 03-page073 | |
| Severe camshaft wear and the successful testing of a new servo fabric fastening process. | 3rd May 1930 | Box 11 \ 3 03-page074 | |
| Letter detailing an axle oil leak fix and ongoing valve trouble with a proposal for investigation. | 30th Apr 1930 | Box 11 \ 3 03-page075 | |
| Cover note for the submission of weekly time sheets. | 3rd May 1930 | Box 11 \ 3 03-page076 | |
| Engine cooling issues and an oil leak on car 23-EX during hot weather. | 28th Apr 1930 | Box 11 \ 3 03-page077 | |
| Results of road tests concerning front-end vibration and suspension settings. | 5th May 1930 | Box 11 \ 3 03-page078 | |
| Monitoring of engine water temperatures and the absence of overheating issues. | 5th May 1930 | Box 11 \ 3 03-page079 | |
| Laboratory report on the chemical analysis of a deposit from filter 23FX. | 5th May 1930 | Box 11 \ 3 03-page080 | |
| Radiator performance and cooling tests of the 23-EX car compared to other models. | 5th May 1930 | Box 11 \ 3 03-page081 | |
| Continuation of a test report on car cooling performance based on air and water temperatures. | 5th May 1930 | Box 11 \ 3 03-page082 | |
| Letter discussing test results for overheating, camshaft concerns, and steering selectivity on a Sports Phantom II. | 5th May 1930 | Box 11 \ 3 03-page083 | |
| Letter discussing the fix for a radiator 'jellying' issue by sending and fitting new parts. | 6th May 1930 | Box 11 \ 3 03-page084 | |
| Continued note with instructions on adjusting springs and a query about spark plug performance. | 6th May 1930 | Box 11 \ 3 03-page085 | |
| Letter explaining discrepancies in road test temperature readings and proposing a new reporting method. | 7th May 1930 | Box 11 \ 3 03-page086 | |
| Engine issues including a camshaft in fearful condition, a noisy oil pump, tappet noise, and incorrect valves. | 7th May 1930 | Box 11 \ 3 03-page087 | |
| Valve performance, a rear axle oil leak, and steering adjustments with lead weights. | 7th May 1930 | Box 11 \ 3 03-page088 | |
| Vehicle stability issues including radiator movement, steering joggles, and excessive oil consumption. | 7th May 1930 | Box 11 \ 3 03-page089 | |
| Oil consumption at high speed and requesting views. | 8th May 1930 | Box 11 \ 3 03-page090 | |
| Telegram requesting necessary parts for an improved radiator mounting. | 8th May 1930 | Box 11 \ 3 03-page091 | |
| Correspondence regarding a missed radiator washer and sending new Lodge sparking plugs for testing. | 8th May 1930 | Box 11 \ 3 03-page092 | |
| Instructing the stores to despatch one dozen Lodge Plugs to G.W. Hancock in France. | 8th May 1930 | Box 11 \ 3 03-page093 | |
| Standardisation of new features across English and American chassis production. | 9th May 1930 | Box 11 \ 3 03-page094 | |
| Component failures on experimental car 23-EX, including tappet wear, and a road test comparison with car 24-EX. | 11th May 1930 | Box 11 \ 3 03-page095 | |
| Letter discussing parts for car 24-EX and a plan to address a newspaper article with the Paris police. | 11th May 1930 | Box 11 \ 3 03-page096 | |
| Sketch showing a broken battery box support lug. | 12th May 1930 | Box 11 \ 3 03-page097 | |
| Arrangements for a car's test run by Sales Officials after completing 10,000 miles in France. | 12th May 1930 | Box 11 \ 3 03-page098 | |
| Telegram from 'Hancouk' to 'Hives Roycar Derby' reporting delays on vehicle tests 23-EX and 24-EX. | 13th May 1930 | Box 11 \ 3 03-page099 | |
| Telegram confirming the completion of project EX 9000. | 17th May 1930 | Box 11 \ 3 03-page100 | |
| The arrangement of a test run for car 23-EX by sales officials in France. | 13th May 1930 | Box 11 \ 3 03-page101 | |
| Report from France detailing telegram communications about vehicle testing, mileage, repairs, and interactions with local police. | 13th May 1930 | Box 11 \ 3 03-page102 | |
| Page 2 of a letter discussing a report and communications with police in Paris and Tours. | 13th May 1930 | Box 11 \ 3 03-page103 | |
| Translated letter refuting claims about vehicle testing practices made in a French publication. | 13th May 1930 | Box 11 \ 3 03-page104 | |
| Defence of the company's use of French roads for touring, arguing against accusations of high-speed testing and road damage. | 14th May 1930 | Box 11 \ 3 03-page105 | |
| The successful testing and fitting of a modified radiator mounting on experimental car 24-EX. | 14th May 1930 | Box 11 \ 3 03-page106 | |
| Telegram received by telephone regarding the collection of car 23EX from Chateauroux. | 15th May 1930 | Box 11 \ 3 03-page107 | |
| Radiator cooling efficiency issues and tappet noises during vehicle road tests in France. | 15th May 1930 | Box 11 \ 3 03-page108 | |
| Engine noise complaints due to worn tappet pads and camshaft tearing. | 16th May 1930 | Box 11 \ 3 03-page109 | |
| Points of interest and condemned criticisms for the 23-EX model. | 16th May 1930 | Box 11 \ 3 03-page110 | |
| From PN to Br. arranging the collection and testing of car 23-EX in Chateauroux, France. | 16th May 1930 | Box 11 \ 3 03-page111 | |
| Post Office telegram sent to Hives at Roycar Derby, requesting four vouchers from Hancock. | 17th May 1930 | Box 11 \ 3 03-page112 | |
| From Sg. to Hs. concerning an investigation into overheating and water loss on test car 23-EX. | 21th May 1930 | Box 11 \ 3 03-page113 | |
| Telegram received by telephone regarding the status and movement of car 23 EX. | 21th May 1930 | Box 11 \ 3 03-page114 | |
| From G.W.H. to Hs. regarding the movements of experimental cars 23-EX and 24-EX. | 22th May 1930 | Box 11 \ 3 03-page115 | |
| Confirming the cross-channel shipment of car 23-EX from Sèvres to Boulogne. | 22th May 1930 | Box 11 \ 3 03-page116 | |
| 10,000-mile car test in France for the 23-EX model. | 26th May 1930 | Box 11 \ 3 03-page117 | |
| Test report evaluating vehicle performance, engine noise, consumption, and handling. | 26th May 1930 | Box 11 \ 3 03-page118 | |
| Note detailing the condition of car 23-EX, which has a broken off-front-side glass and a missing nearside screen wiper blade. | 27th May 1930 | Box 11 \ 3 03-page119 | |
| Reports on car 23-EX, outlining issues with speed, overheating, steering, and thermostatic radiator shutters for investigation. | 27th May 1930 | Box 11 \ 3 03-page120 | |
| Car test run, evaluating performance including engine, brakes, and cooling systems. | 26th May 1930 | Box 11 \ 3 03-page121 | |
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