| Description | Date | Identifier | |
| Preference for fitting a 40/50 model with a Beatonson all-weather head instead of a standard open body. | 29th Jan 1925 | Morton \ M2.4 img017 | |
| Design sketches and notes for a split piston and alternative pad piston concepts. | 18th Oct 1919 | Morton \ M2.4 img018 | |
| Origin, testing, and proposed modifications for shock absorbers for standard cars. | 16th Oct 1919 | Morton \ M2.4 img019 | |
| Tests conducted to resolve piston knocks by modifying oil pressure delivery and piston clearance. | 17th Oct 1919 | Morton \ M2.4 img020 | |
| Engine testing concerning oil pressure, piston knocking, and piston design. | 17th Oct 1919 | Morton \ M2.4 img021 | |
| Piston knock in cold conditions and the testing of split pistons using a stroboscopic telephone. | 1st Apr 1921 | Morton \ M2.4 img022 | |
| Adaptation of third-party starter motors and dynamos for the Goshawk II engine and chassis. | 1st Apr 1921 | Morton \ M2.4 img023 | |
| Mr. Royce's remarks on the design of the Goshawk I and II front shock absorber. | 21th Mar 1921 | Morton \ M2.4 img024 | |
| Design changes for an adjusting screw and a shock absorber arm load. | 9th Mar 1921 | Morton \ M2.4 img025 | |
| Design and increased capacity of the 'Goshawk II' petrol tank, referencing drawing Lec.1367. | 17th Mar 1921 | Morton \ M2.4 img026 | |
| Competitive manufacturing of starter motors and dynamos for the Goshawk II model. | 8th Apr 1921 | Morton \ M2.4 img027 | |
| The 'Goshawk II' petrol tank, enclosing drawing Lec.1370 and confirming the decision to proceed with a built-up pattern. | 1st Apr 1921 | Morton \ M2.4 img028 | |
| Halting work on the Vulture engine's overhead camshaft cylinder head in favour of a push-rod mechanism. | 17th Nov 1920 | Morton \ M2.4 img029 | |
| Modification of the 'Vulture' engine and suggesting the adoption of the 12-cylinder 'Buzzard' engine for a new large chassis. | 19th Nov 1920 | Morton \ M2.4 img030 | |
| Mr. Royce's proposal to experiment with a hot spot induction system to improve fuel vaporization and cold starting. | 15th Dec 1920 | Morton \ M2.4 img031 | |
| Comparative test of radiator cooling performance between the 40/50 and Goshawk II engines. | 30th May 1922 | Morton \ M2.4 img032 | |
| Engine cooling tests, comparing various fan and water circulation methods on Goshawk and 40/50 models. | 30th May 1922 | Morton \ M2.4 img033 | |
| Comparison of engine overheating characteristics in the 40/50 and Goshawk models, noting detonation warnings and thermometer inaccuracies. | 30th May 1922 | Morton \ M2.4 img034 | |
| Further bench tests of a Condor engine, detailing performance and water loss during cooling system tests. | 1st May 1925 | Morton \ M2.4 img035 | |
| Continued note on running a component at 340 revolutions for half an hour. | 1st May 1925 | Morton \ M2.4 img036 | |
| Reports on American parts and the debate over fitting a proprietary Bijur Starter Motor versus standard R-R parts. | 16th Jul 1920 | Morton \ M2.5 img001 | |
| Comparing the Bijur Motor to the in-house designed motor, arguing against fitting Bijur motors to cars due to inferior design, workmanship, and reliability. | 6th Jul 1920 | Morton \ M2.5 img002 | |
| Standardizing parts, such as generators, between the Derby and Springfield factories. | 16th Jul 1920 | Morton \ M2.5 img003 | |
| The sourcing, quality, and development of proprietary electrical components like generators and dynamos. | 16th Jul 1920 | Morton \ M2.5 img004 | |
| Note on the difficulty of maintaining the high standard of silence demanded for the chassis. | 1st Jul 1920 | Morton \ M2.5 img005 | |
| Suitability of an American Foxborough Thermometer versus the standard Cambridge instrument. | 19th Jul 1920 | Morton \ M2.5 img006 | |
| The utility of a water thermometer in a car, particularly for winter conditions and preventing freezing or boiling. | 19th Jul 1920 | Morton \ M2.5 img007 | |
| The unreliability of Whittle type fan belts with fibre links for American chassis. | 19th Jul 1920 | Morton \ M2.5 img008 | |
| Suitability of installing rubber pedal pads with a surrounding skirt on American cars. | 19th Jul 1920 | Morton \ M2.5 img009 | |
| Condition and potential improvements for pressure gauges sourced from America for American cars. | 19th Jul 1920 | Morton \ M2.5 img010 | |
| Recommendation to use pre-war rear springs for American chassis due to their proven reliability. | 30th Jul 1920 | Morton \ M2.5 img011 | |
| Critiquing the poor quality of an American Bosch Starter Motor and expressing doubts about the American factory's capabilities. | 31th Aug 1920 | Morton \ M2.5 img012 | |
| Letter to Mr. Hancock in France regarding the logistics for testing a 20 HP car with 4-wheel brakes and continuing tests on another vehicle. | 20th May 1925 | Morton \ M2.6 img001 | |
| The preparation and delayed dispatch of car 'INDIA' for testing in France. | 21th May 1925 | Morton \ M2.6 img002 | |
| Car's journey from Boulogne to Chateauroux and initial performance feedback, including a steering issue. | 31th May 1925 | Morton \ M2.6 img003 | |
| From the Experimental Department regarding buffer clearance and a stiff gear lever on a 20HP car. | 4th Jun 1925 | Morton \ M2.6 img004 | |
| Significant delays and poor secrecy during the shipment of chassis 9 G.III from London to Boulogne. | 6th Jun 1925 | Morton \ M2.6 img005 | |
| Report from Chateauroux, France, detailing the condition, required repairs, and performance of chassis 9 G.III. | 7th Jun 1925 | Morton \ M2.6 img006 | |
| Severe engine vibrations and an oscillating speed lever experienced at 64 m.p.h. | 15th Jun 1925 | Morton \ M2.6 img007 | |
| Letter to Mr. Hancock requesting further investigation into steering, an oil leak, and a clutch problem on model 93-NK. | 15th Jun 1925 | Morton \ M2.6 img008 | |
| Request for data collection on factors affecting engine overheating for a 1923 Silver Ghost (93-NK). | 9th Jul 1925 | Morton \ M2.6 img009 | |
| Cover sheet for a summary of faults from a 10,216-mile test of chassis 9-G-111 in France. | 9th Jul 1925 | Morton \ M2.6 img010 | |
| Summarizing faults found during a 10,216-mile test on chassis 9-G-111. | 28th Jun 1925 | Morton \ M2.6 img011 | |
| Secret memo detailing the dispatch of cars 8-G-111 and 9-G-111 for personal use and a 10,000-mile test in France. | 18th Jul 1925 | Morton \ M2.6 img012 | |
| Secret memo regarding the approval of a car, designated 'INDIA', for a 10,000-mile test. | 21th Jul 1925 | Morton \ M2.6 img013 | |
| Logistics for a 20 HP car undertaking a 10,000-mile trial in France, including an R.A.C. examination. | 23th Jul 1925 | Morton \ M2.6 img014 | |
| Arranging a letter of authorisation for a 20 HP car being taken to France. | 23th Jul 1925 | Morton \ M2.6 img015 | |
| Letter regarding the dispatch of servo cams and plugs, and advice on a universal joint cover leak. | 13th Aug 1925 | Morton \ M2.6 img016 | |
| Outlining the conditions for the final 3,000 miles of a 10,000-mile test on an 'India' chassis. | 14th Aug 1925 | Morton \ M2.6 img017 | |
| Mileage and vehicle selection for an 'INDIA' chassis test. | 20th Aug 1925 | Morton \ M2.6 img018 | |
| Update on the status of experimental cars, including a 20 HP with 4-wheel brakes and another held up in France. | 24th Aug 1925 | Morton \ M2.6 img019 | |
| Secret memo outlining instructions for the 10,000 miles test on the 'India' car. | 24th Aug 1925 | Morton \ M2.6 img020 | |
| Average mileage and high wear rate of tyres in France and the related necessity for new inner tubes. | 1st Aug 1925 | Morton \ M2.6 img021 | |
| Questioning the excessive expenditure on tyres and inner tubes for chassis 9-G-3. | 24th Aug 1925 | Morton \ M2.6 img022 | |
| Secret memo regarding the 10,000 miles test on 'INDIA' in France. | 25th Aug 1925 | Morton \ M2.6 img023 | |
| Letter discussing tyre wear, mileage, and replacement strategy for Chassis 9 G.III during testing in France. | 26th Aug 1925 | Morton \ M2.6 img024 | |
| Tyre performance and discard status for chassis 9 G.III after a 10,000-mile test. | 26th Aug 1925 | Morton \ M2.6 img025 | |
| Stock report detailing the quantity and condition of received inner tubes. | 26th Aug 1925 | Morton \ M2.6 img026 | |
| Letter providing instructions for car tests being conducted in France, requesting a report after 7,000 miles. | 26th Aug 1925 | Morton \ M2.6 img027 | |
| Summarizing findings from a 10,000-mile test on the 'INDIA' car in France, concerning battery maintenance and engine detonation. | 26th Aug 1925 | Morton \ M2.6 img028 | |
| Arrangements and staffing logistics for the 10,000 miles 'India' Test. | 27th Aug 1925 | Morton \ M2.6 img029 | |
| Request to arrange for a 20 HP car to meet at Le Havre for the India 10,000 Miles Test. | 27th Aug 1925 | Morton \ M2.6 img030 | |
| From G.W. Hancock discussing the testing of Chassis 9 G.III, including steering wobbles, gear noise, and future test arrangements. | 28th Aug 1925 | Morton \ M2.6 img031 | |
| The failure of 20 HP wing stays, suggesting the wings themselves are collapsing. | 1st Aug 1925 | Morton \ M2.6 img032 | |
| Petrol quality and engine detonation during a 10,000-mile test in France. | 31th Aug 1925 | Morton \ M2.6 img033 | |
| Cover memo for the final reports on the 10,000-mile experimental road test of the 'India' car in France. | 1st Sep 1925 | Morton \ M2.6 img034 | |
| Summary of failures during a 7,000 miles test for chassis 9-G-111, carried out from 8th to 30th August 1925. | 30th Aug 1925 | Morton \ M2.6 img035 | |
| Test report on Chassis 9.G.111 following a 10,000 miles 'India' test, outlining points for criticism. | 2nd Sep 1925 | Morton \ M2.6 img036 | |
| Covering memorandum for a report on the 10,000 miles test of the 20 HP 'India' vehicle. | 24th Sep 1925 | Morton \ M2.6 img037 | |
| Letter concerning the return of a car to Derby, its performance in France, a fault with a seized slipper flywheel, and an enclosed key. | 17th Sep 1925 | Morton \ M2.6 img038 | |
| The completion of a 10,000-mile road test in France, detailing the car's performance. | 22th Sep 1925 | Morton \ M2.6 img039 | |
| Vehicle handiness and comfort, detailing issues with front spring failures during testing in France. | 22th Sep 1925 | Morton \ M2.6 img040 | |
| Vehicle component performance and failures, specifically addressing shock absorbers, rear springs, and steering box support. | 22th Sep 1925 | Morton \ M2.6 img041 | |
| Various car running faults including brake issues, steering wander, and analysis of a tube failure. | 22th Sep 1925 | Morton \ M2.6 img042 | |
| Issues with steering, braking, shocks, and carburation during a vehicle trial. | 22th Sep 1925 | Morton \ M2.6 img043 | |
| Investigation into engine running issues, including valve clearances, Autovac irregularities, and carburetter blow-back. | 22th Sep 1925 | Morton \ M2.6 img044 | |
| Faults found in the petrol system, dynamo, and Klaxon horn wiring at specific mileages. | 22th Sep 1925 | Morton \ M2.6 img045 | |
| Issues and observations regarding vehicle components like insulation, ignition, lamps, and engine vibrations. | 22th Sep 1925 | Morton \ M2.6 img046 | |
| Test report page detailing issues with engine vibration, lubrication, cooling, and bodywork. | 22th Sep 1925 | Morton \ M2.6 img047 | |
| Vehicle test failures including broken front wings, clutch slipping, and engine vibration. | 12th Sep 1952 | Morton \ M2.6 img048 | |
| Table detailing the distance, time, petrol usage, and fuel consumption for a series of journeys. | 12th Sep 1952 | Morton \ M2.6 img049 | |
| Twisted front axle from car 9-G-111 after a 10,000-mile test in France. | 23th Sep 1925 | Morton \ M2.6 img050 | |
| Parts for testing on a 20 HP chassis as part of a 10,000-mile trial. | 29th Jan 1926 | Morton \ M2.7 img001 | |
| Arrangements for a 10,000-mile test on a 20 HP car in France. | 19th Feb 1926 | Morton \ M2.7 img002 | |
| Conflicting travel arrangements for the author's family with a 10,000-mile car test in France. | 22th Feb 1926 | Morton \ M2.7 img003 | |
| Preparing a 20 HP car for a visit to Le Canadel, including a list of new parts and modifications. | 3rd Mar 1926 | Morton \ M2.7 img004 | |
| Typed memo, page 2, concerning the fitting of hydraulic shock absorbers to car 7-EX. | 5th Mar 1926 | Morton \ M2.7 img005 | |
| 10,000-mile standardisation test for an experimental 20 HP chassis following a visit to Le Canadel. | 5th Mar 1926 | Morton \ M2.7 img006 | |
| The logistics of sending a 20 HP chassis to Le Canadel, France for a 10,000-mile trial. | 6th Mar 1926 | Morton \ M2.7 img007 | |
| Car's performance, specifically its steering and shock absorbers. | 19th Mar 1926 | Morton \ M2.7 img008 | |
| Vehicle test report from Valence, France, detailing performance issues. | 20th Mar 1936 | Morton \ M2.7 img009 | |
| Issues with a 20 HP car's brakes and servo system, and developments on a 'Shels. Damper'. | 20th Mar 1936 | Morton \ M2.7 img010 | |
| Potential design changes and issues with a rubber ring and steering column dampers. | 22th Apr 1926 | Morton \ M2.7 img011 | |
| 10,000-mile test in France for low-pressure tyres on well-base rims. | 22th Apr 1926 | Morton \ M2.7 img012 | |
| Memo regarding the completion of a 10,000-mile test and the subsequent return of the car. | 24th Apr 1926 | Morton \ M2.7 img013 | |
| Summary of faults recorded for chassis 10 G.III during a 10,027-mile test. | 3rd May 1926 | Morton \ M2.7 img014 | |
| Typed table log of vehicle mileage tests and recorded component failures. | 1st May 1926 | Morton \ M2.7 img015 | |
| 10,000-mile test run, detailing severe steering issues at speed and a subsequent garage break-in and theft. | 1st May 1926 | Morton \ M2.7 img016 | |
| Travel arrangements after investigating 'Phantom steering' and a potential theft. | 3rd May 1926 | Morton \ M2.7 img017 | |
| Failure of a rear axle on car 10-G-111 in France due to incorrect thrust bearings. | 3rd May 1926 | Morton \ M2.7 img018 | |
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