| Description | Date | Identifier | |
| Proposal to test the weight-carrying limits of an armoured car chassis on a steep gradient. | 1st Sep 1921 | Morton \ M1.6 img005 | |
| Conditions of tests for armoured cars for the India Office, focusing on chassis load, speed, and radiator performance. | 27th Aug 1921 | Morton \ M1.6 img006 | |
| Radiator capacity and chassis performance for a potential armoured car build for the War Office. | 1st Aug 1921 | Morton \ M1.6 img007 | |
| Armoured car chassis performance, comparing it to commercial vehicles regarding load, engine cooling, gearing, and hill climbing. | 1st Aug 1921 | Morton \ M1.6 img008 | |
| Improving the cooling of the 40/50 HP armoured car by experimenting with a radiator cowl. | 12th Aug 1921 | Morton \ M1.6 img009 | |
| Solutions to water loss in the cooling systems of 40/60 Armoured Cars. | 6th Dec 1921 | Morton \ M1.6 img010 | |
| Note on the effects of water circulation speed and the priming effect of dirty water. | 6th Dec 1921 | Morton \ M1.6 img011 | |
| Review of drawings for a starter motor for chassis 60508, a 30 HP 1906/7 model. | 1st Aug 1921 | Morton \ M1.6 img012 | |
| Costs for parts and a gear ring from C.A.V. and making an assumption about the chassis battery. | 11th Aug 1921 | Morton \ M1.6 img013 | |
| Condenser design and material sourcing issues, comparing to Bosch and complaining about the lack of suitable thin paper and low hysteresis iron. | 11th Nov 1921 | Morton \ M1.6 img014 | |
| Test report on the performance of Melin tungsten contact points after a 390-hour run. | 19th Sep 1921 | Morton \ M1.6 img015 | |
| The production plan for six experimental Goshawk 11 chassis. | 12th Sep 1921 | Morton \ M1.6 img016 | |
| Policy for ordering materials for the Goshawk 11 chassis production. | 14th Oct 1921 | Morton \ M1.6 img017 | |
| Production and testing procedure for the Goshawk 11 model. | 14th Oct 1921 | Morton \ M1.6 img018 | |
| Departmental collaboration and logistics to speed up the development of a new small car, referencing the Goshawk project. | 14th Oct 1921 | Morton \ M1.6 img019 | |
| Customer complaints regarding car springing and leaf spring design. | 7th Oct 1921 | Morton \ M1.6 img020 | |
| Customer complaints regarding vehicle springing, the effect of high tyre pressure, and potential solutions like friction dampers. | 10th Oct 1921 | Morton \ M1.6 img021 | |
| The issues and customer complaints associated with fitting shock absorbers and the performance of different leaf spring types. | 7th Oct 1921 | Morton \ M1.6 img022 | |
| Report discussing leaf spring friction, squeaking, and springing treatments, including for the 40/50 HP model. | 7th Oct 1921 | Morton \ M1.6 img023 | |
| Letter about the running of a car in India with battery-only ignition. | 6th Oct 1921 | Morton \ M1.6 img024 | |
| Report from the Delhi Service Depot on the prejudice against battery ignition in India. | 15th Aug 1921 | Morton \ M1.6 img025 | |
| Arguing against battery-only ignition cars due to a lack of charging facilities in certain regions. | 8th Nov 1921 | Morton \ M1.6 img026 | |
| Modifications to the 'Goshawk II' engine, specifically moving the starter motor to enable a magneto to be fitted. | 1st Nov 1921 | Morton \ M1.6 img027 | |
| Telegram from Royce to Hives arranging a visit to discuss US business and the Goshawk engine. | 18th Nov 1921 | Morton \ M1.6 img028 | |
| Arranging a visit to Mr. Royce at West Wittering regarding the Goshawk II. | 18th Nov 1921 | Morton \ M1.6 img029 | |
| Bump test for the Goshawk 11, comparing component failures with the 40/50 HP chassis. | 15th Dec 1921 | Morton \ M1.6 img030 | |
| Potential fatal failures of front springs on the Goshawk car. | 15th Dec 1921 | Morton \ M1.6 img031 | |
| Table logging component breakages and time run during a bump test on the Goshawk chassis front end. | 15th Dec 1921 | Morton \ M1.6 img032 | |
| Test report logging a series of spring and frame failures on a 40/50 front bumper chassis. | 18th Jan 1925 | Morton \ M1.6 img033 | |
| Log sheet detailing failures found during a running test on a 40/50 chassis. | 18th Jan 1925 | Morton \ M1.6 img034 | |
| The performance of oilless bushes from a Marmon car and a recommendation for their use on the 40/50 HP model. | 2nd Aug 1921 | Morton \ M1.7 img001 | |
| The dismantling of a Marmon car (x1692) detailing the condition and measurements of its crankshaft and bearings. | 23th Sep 1921 | Morton \ M1.7 img002 | |
| Material analysis report detailing pin dimensions, Brinell hardness readings, and chemical composition. | 1st Sep 1921 | Morton \ M1.7 img003 | |
| Extract from the Marmon Car Instruction Book detailing the function of the electrical system's circuit breaker. | 3rd Dec 1921 | Morton \ M1.7 img004 | |
| The double circuit breaker from a Marmon car for chassis electrical circuits. | 3rd Dec 1921 | Morton \ M1.7 img005 | |
| Analysis of two electrical circuit protection arrangements as alternatives to a battery fuse. | 3rd Dec 1921 | Morton \ M1.7 img006 | |
| The operation of a circuit breaker with a shunt coil and an earth indicator lamp. | 13th Dec 1921 | Morton \ M1.7 img007 | |
| Analysis and performance review of a 6-volt Marmon Delco Dynamo. | 28th Sep 1921 | Morton \ M1.7 img008 | |
| Test results and specifications for an electrical component, detailing performance data, dimensions, weight, and resistance values. | 28th Sep 1921 | Morton \ M1.7 img009 | |
| Graph of ampere-output vs speed curves for a Delco Dynamo from a Marmon car. | 20th Oct 1921 | Morton \ M1.7 img010 | |
| Note on the compression ratio and engine detonation of an Essex car. | 20th Oct 1921 | Morton \ M1.7 img011 | |
| Technical critique comparing a 15 HP Lorraine-Dietrich chassis to the 'Goshawk II' model, listing its shortcomings. | 25th Nov 1921 | Morton \ M1.7 img012 | |
| Recommendation to adopt the new improved Lucas cut-out switch as standard. | 4th Jul 1921 | Morton \ M1.8 img001 | |
| Recommendation to adopt a new cut-out and to persevere with Lucas's to improve its efficiency. | 4th Jul 1921 | Morton \ M1.8 img002 | |
| Unsatisfactory output of the Lucas Dynamo and proposing alternatives with different axle ratios for the 40/50 chassis. | 1st Jul 1921 | Morton \ M1.8 img003 | |
| Changing axle ratios and its effect on dynamo cut-in speed for the 40/50 chassis. | 1st Jul 1921 | Morton \ M1.8 img004 | |
| Unsatisfactory relationship with electrical equipment supplier Lucas, concerning contract terms and defective parts. | 27th Jun 1921 | Morton \ M1.8 img005 | |
| Reliability of electrical components including the brush holders, cut-out, fuses, and dynamo. | 1st Jul 1921 | Morton \ M1.8 img006 | |
| Page discussing reliability issues with Exide batteries and dynamo belts. | 1st Jul 1921 | Morton \ M1.8 img007 | |
| Unreliability and potential replacement of Lucas electrical equipment, specifically dynamos and brushes. | 1st Jul 1921 | Morton \ M1.8 img008 | |
| From 'R.' to 'C.J.' questioning a committee decision about the reliability of fuses and fuse holders. | 1st Jul 1921 | Morton \ M1.8 img009 | |
| U.S.A. complaints regarding petrol tank fittings and suggested design improvements. | 14th Jul 1921 | Morton \ M1.8 img010 | |
| Page discussing vacuum feed tank fittings and a hot spot induction system. | 12th Jul 1921 | Morton \ M1.8 img011 | |
| Modifications for heating the throttle and carburettor, including exhaust heating and thermostat controls for winter alcohol use. | 12th Jul 1921 | Morton \ M1.8 img012 | |
| Starter carburettor, speedometer drive, chassis weight, and battery ignition. | 1st Jul 1921 | Morton \ M1.8 img013 | |
| Reliability of platinum-iridium faces versus tungsten for contact points. | 1st Jul 1921 | Morton \ M1.8 img014 | |
| Requesting a comparative test of G.11 and Neptune induction pipes against the Dorris scheme on a 40/50 engine using petrol-paraffin mixtures. | 15th Dec 1921 | Morton \ M1.9 img001 | |
| Unsuitability of the Bendix pinion for the Neptune Electric Starter and proposing a double reduction gear with magnetic control. | 15th Dec 1921 | Morton \ M1.9 img002 | |
| Modifying the 40/50 HP engine for marine use, to be named 'Neptune'. | 12th Oct 1921 | Morton \ M1.9 img003 | |
| Drawings to be handed to Mr. Hives for the 'Goshawk II' and 'Swallow' designs. | 1st Nov 1921 | Morton \ M1.9 img004 | |
| Listing drawings for the 'Swallow' Gear Box and Clutch. | 9th Nov 1921 | Morton \ M1.9 img005 | |
| Dispatch of drawings Lec.1494 and Lec.1493 for the 'Swallow' Gear Box and its declutching gear. | 21th Nov 1921 | Morton \ M1.9 img006 | |
| Proposed visit and modifying the 40/50 engine for a smaller, more cost-effective chassis. | 13th Dec 1921 | Morton \ M1.9 img007 | |
| From R. to Hs. regarding the magneto drive for G.11 Swallow and Neptune engines, requesting an experiment. | 15th Dec 1921 | Morton \ M1.9 img008 | |
| Shift in vehicle taxation to petrol and the design consideration of a smaller engine bore. | 1st Oct 1921 | Morton \ M1.9 img009 | |
| Proposal for modifying the 40/50 HP engine to an overhead valve (OHV) configuration using existing parts stock. | 1st Oct 1921 | Morton \ M1.9 img010 | |
| Request to send sample valves for a 40/50 HP engine to see if they can be modified for the overhead gear. | 3rd Oct 1921 | Morton \ M1.9 img011 | |
| Request for the Essex cylinder head gasket to analyze combustion chamber width and detonation issues, comparing it to the 'Swallow' model. | 1st Sep 1921 | Morton \ M1.9 img012 | |
| Proposal for a new 14 HP six-cylinder engine crankshaft, with a request for design details of the Marmon crankshaft. | 31th Aug 1921 | Morton \ M1.9 img013 | |
| Design specifications for a new small six-cylinder engine, referred to as the 'third line model'. | 16th Oct 1921 | Morton \ M1.9 img014 | |
| Cost reduction of a chassis by adopting a six-cylinder engine and comparing it with a four-cylinder alternative. | 1st Aug 1921 | Morton \ M1.9 img015 | |
| Proposal for an earthed electrical system for the small 14 HP model, with handwritten notes on component placement. | 1st Aug 1921 | Morton \ M1.9 img016 | |
| Request to test a fan belt drive for the 'Goshawk II' and enclosing a crankshaft sketch for a new 14 HP model. | 1st Aug 1921 | Morton \ M1.9 img017 | |
| Design modifications for the 'Swallow' model, including wheelbase, wheels, gearbox and clutch. | 1st Sep 1921 | Morton \ M1.9 img018 | |
| From R. to C.J. discussing the design specifications for a new six-cylinder car model, including ignition, dimensions, and chassis comparisons. | 3rd Sep 1921 | Morton \ M1.9 img019 | |
| Issue of water loss from boiling during hill climbing and potential engineering solutions. | 8th Sep 1921 | Morton \ M1.9 img020 | |
| Development policy for the Goshawk I engine in relation to the Vulture and Goshawk II. | 11th Jun 1928 | Morton \ M1.9 img021 | |
| Developing a new 40 HP chassis, managing existing material stock, and addressing supplier performance. | 14th Jun 1921 | Morton \ M1.9 img022 | |
| The procedure for keeping production output going continuously six months ahead. | 1st Jun 1921 | Morton \ M1.9 img023 | |
| Feasibility and challenges associated with experimenting with front wheel brakes. | 4th Aug 1921 | Morton \ M1.A img001 | |
| Comparing tyre pressures, braking systems, and the performance of various vehicles including American cars, Hispano, and the new Goshawk II. | 8th Aug 1921 | Morton \ M1.A img002 | |
| Use of front-wheel brakes on new models and comparing them to competitors. | 1st Aug 1921 | Morton \ M1.A img003 | |
| Requesting urgent tests on the torsion and stiffness of a front axle system for a 40/50 HP chassis. | 1st Oct 1921 | Morton \ M1.A img004 | |
| 4-wheel braking, referencing a letter from Monsieur Henri Perrot and his braking system. | 4th Nov 1921 | Morton \ M1.A img005 | |
| Invitation from H. Perrot to a demonstration of a four-wheel braking system at Brooklands. | 3rd Nov 1921 | Morton \ M1.A img006 | |
| Assessment on the suitability of the Perrot front wheel brake system, suggesting an investigation into the alternative Hotchkiss system. | 1st Nov 1921 | Morton \ M1.A img007 | |
| Relative importance of front-wheel brakes, comparing the company's focus on simplicity and efficiency against the French motor industry's pursuit of novelties. | 9th Nov 1921 | Morton \ M1.A img008 | |
| On delays and proposed schemes for applying front wheel brakes to the 'Swallow' chassis. | 22th Nov 1921 | Morton \ M1.A img009 | |
| Technical memorandum comparing pneumatic and mechanical servo braking systems. | 21th Nov 1922 | Morton \ M1.A img010 | |
| Design schemes for free wheels and clutches, and progress on the 'Swallow' and 'Goshawk II' chassis. | 1st Nov 1921 | Morton \ M1.A img011 | |
| Diagram illustrating the arrangement of a servo device and compensation mechanism for brakes. | 24th Nov 1921 | Morton \ M1.A img012 | |
| Particulars of tests conducted on front wheel brakes for a 40/50 HP chassis. | 20th Dec 1921 | Morton \ M1.A img013 | |
| Test results for a 40/50 HP front axle, detailing torsion and bending deflections under various loads. | 16th Dec 1920 | Morton \ M1.A img014 | |
| Diagrams and tabulated load test measurements for an off-side leaf spring assembly. | 18th May 1931 | Morton \ M1.A img015 | |
| Table of measurements for a vehicle leaf spring deflection test under various loads. | 18th May 1931 | Morton \ M1.A img016 | |
| Suggested rig for applying torsion to a front axle. | 29th Oct 1921 | Morton \ M1.A img017 | |
| Suggested rig for testing front axle failure under load and analysing its behaviour. | 29th Oct 1921 | Morton \ M1.A img018 | |
| Suggested method for torsionally testing a 40/50 front axle. | 29th Oct 1921 | Morton \ M1.A img019 | |
| Blueprint outlining a suggested method for testing a knuckle joint and axle for fracture and deflection. | 29th Oct 1921 | Morton \ M1.A img020 | |
| Continued memo describing a proposed rig for testing crankshaft stress and torsion using oil pressure. | 27th Apr 1918 | Morton \ M2.1 img001 | |
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