| Description | Date | Identifier | |
| Page detailing the methodology for comparative heating tests on various dynamos. | 11th Jan 1921 | West Wittering \ F \ January1921 Scan19 | |
| Comparison of the performance, overheating, and design characteristics of various dynamos, including Westinghouse, Bosch, and Rotax models. | 30th Dec 1920 | West Wittering \ F \ January1921 Scan20 | |
| Comparative heating tests and weights of various shunt-wound dynamos. | 30th Dec 1920 | West Wittering \ F \ January1921 Scan21 | |
| Graph comparing the heating tests of three different plain shunt dynamos over time. | 23th Dec 1929 | West Wittering \ F \ January1921 Scan23 | |
| Effect of an auxiliary gap in battery ignition systems to enhance sparking under adverse conditions. | 12th Jan 1921 | West Wittering \ F \ January1921 Scan25 | |
| Magneto design, testing a B.T.H. 6-cylinder magneto, and a book on ignition. | 12th Jan 1921 | West Wittering \ F \ January1921 Scan26 | |
| Correspondence regarding the trial and evaluation of Lopdell water pipe clips. | 14th Jan 1921 | West Wittering \ F \ January1921 Scan27 | |
| Examination of a pre-war Bosch combined switchbox, ammeter, cut-out, and regulator. | 12th Jan 1921 | West Wittering \ F \ January1921 Scan28 | |
| Explanation of the electrical system's operation, detailing the function of various switch positions. | 10th Dec 1920 | West Wittering \ F \ January1921 Scan29 | |
| Continued report on the electrical operation and component analysis of a dynamo, regulator, and switch system. | 21th Jan 1921 | West Wittering \ F \ January1921 Scan30 | |
| Notes on diagram conventions for experimental test instruments and a keyless lock for switches and regulator adjustment. | 21th Jan 1921 | West Wittering \ F \ January1921 Scan31 | |
| Testing of tungsten points taken from Liberty ignition systems. | 21th Jan 1921 | West Wittering \ F \ January1921 Scan32 | |
| 390-hour test of Liberty Tungsten contact points in a battery ignition system. | 21th Jan 1921 | West Wittering \ F \ January1921 Scan33 | |
| Defects and sparking observed in tungsten points from the Independent Lamp and Wire Co. | 24th Jan 1921 | West Wittering \ F \ January1921 Scan34 | |
| Leakage of charge test conducted on a standard 12-volt battery over a three-month period. | 24th Jan 1921 | West Wittering \ F \ January1921 Scan35 | |
| Plan to fully charge and test a modified battery over a six-month period. | 24th Jan 1921 | West Wittering \ F \ January1921 Scan36 | |
| The unsatisfactory results of bench tests for two sets of tungsten contact points for magnetos. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan37 | |
| The vibration and life tests of various lamp bulbs. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan38 | |
| Results of a lamp failure test under specific vibration and voltage conditions. | 25th Jan 1912 | West Wittering \ F \ January1921 Scan39 | |
| Continued report on vibration and life tests for various headlamp bulbs and holders. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan40 | |
| Lamp failure tests, detailing bulb types, hours run, and the nature of the failures. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan41 | |
| Reliability of new half-watt lamps from B.T.H. Co. and their recommendation for use in chassis headlamps. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan42 | |
| Preliminary report on the Conner C.M.1 Magneto and a proposal to test it on an experimental car. | 27th Jan 1921 | West Wittering \ F \ January1921 Scan43 | |
| Preliminary report on the Conner Magneto C.M.1. | 24th Jan 1921 | West Wittering \ F \ January1921 Scan44 | |
| Description of a pole-shoe arrangement and distributor gear wheel for an electrical ignition component. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan45 | |
| The bench testing of various materials for distributor sparking points in a battery ignition system. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan46 | |
| Continued memorandum detailing the markings for different types of sparking points and a proposed test. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan47 | |
| Bench tests of various materials for distributor sparking points in a battery ignition system. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan48 | |
| Continued analysis of material wear on distributor components made from Nichrome, Nickel-Brass, and Nickel. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan49 | |
| Requesting Mr. Royce to return items for an additional 100 hours of running. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan50 | |
| Testing distributor sparking points of various materials for a battery ignition system. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan51 | |
| Description of markings for different metal sparking points on a distributor rotor for testing. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan52 | |
| Bench tests of various materials used for distributor sparking points in a battery ignition system. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan53 | |
| Analysis of wear and deposits on distributor components made from various metals. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan54 | |
| Continued memo requesting Mr. Royce to return items for an additional 100-hour run. | 1st Jan 1921 | West Wittering \ F \ January1921 Scan55 | |
| Drawing No. Lec. 1327, showing the carburettor and induction pipe flanges for the 'Kite' engine. | 1st Jan 1921 | West Wittering \ F \ January1921 Scan56 | |
| The 'Kite' engine crankcase arms and associated drawing Lec.1326. | 2nd Jan 1922 | West Wittering \ F \ January1921 Scan57 | |
| Specifications and sourcing of various lamps for the lighting installation at West Wittering. | 21th Jan 1922 | West Wittering \ F \ January1921 Scan58 | |
| Agreeing not to change the 'H' section pendulum lever on the steering column without further evidence of its necessity. | 14th Jan 1922 | West Wittering \ F \ January1921 Scan59 | |
| From Mr. Royce detailing a design alteration for the Goshawk I and II Dynamo and Brush Holders. | 17th Jan 1921 | West Wittering \ F \ January1921 Scan60 | |
| Improvements to the 'Goshawk' steering wheel, proposing a more robust two-web design. | 21th Jan 1921 | West Wittering \ F \ January1921 Scan61 | |
| Request from Mr. Royce to obtain six additional small lamps for the West Wittering lighting installation. | 20th Jan 1921 | West Wittering \ F \ January1921 Scan62 | |
| Alterations made to the 'Goshawk II' frame. | 19th Jan 1921 | West Wittering \ F \ January1921 Scan63 | |
| Superseding a previous one, detailing a change in frame gauge and requesting new instructions for side channels. | 19th Jan 1921 | West Wittering \ F \ January1921 Scan64 | |
| Requesting to alter the drawing number for the 'Goshawk II' Brake Actuating Gear. | 20th Jan 1922 | West Wittering \ F \ January1921 Scan65 | |
| Blueprint for the Goshawk II change speed box. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan66 | |
| New scheme for the 'Goshawk' II cylinder head, referencing drawings Lec.1332 and Lec.1314. | 10th Sep 1932 | West Wittering \ F \ January1921 Scan67 | |
| Drawing Lec.1334 for the Goshawk II universal joint and a new propeller shaft design. | 1st Jan 1921 | West Wittering \ F \ January1921 Scan68 | |
| Drawing LeC.1335 for the Water Pump and Water Pump Drive for the Goshawk II engine. | 2nd Jan 1922 | West Wittering \ F \ January1921 Scan69 | |
| The requirement for a screw pattern grease syringe to be included in the vehicle tool kit. | 26th Jan 1922 | West Wittering \ F \ January1921 Scan70 | |
| Request for a further supply of smaller C.P. lamps for an installation at West Wittering. | 25th Jan 1921 | West Wittering \ F \ January1921 Scan71 | |
| Alterations to the 'Goshawk 11' side channel to suit different front springs and increase its width. | 24th Jan 1921 | West Wittering \ F \ January1921 Scan72 | |
| Providing a drawing and performance data for 'Goshawk 11' valve springs. | 26th Jan 1922 | West Wittering \ F \ January1921 Scan73 | |
| Mr. Royce's instructions for modifications to the 'Goshawk I' brake gear arrangement, scheme 724. | 27th Jan 1921 | West Wittering \ F \ January1921 Scan74 | |
| Alterations to the 'Goshawk II' third cross member, referencing an attached blueprint with Mr. Royce's instructions. | 2nd Jan 1922 | West Wittering \ F \ January1921 Scan75 | |
| List of points of criticism from Mr. Royce regarding the 'Goshawk II' steering and front spring shackle scheme. | 1st Jan 1921 | West Wittering \ F \ January1921 Scan76 | |
| Design specifications for the Goshawk I & II steering wheel. | 28th Jan 1929 | West Wittering \ F \ January1921 Scan77 | |
| Design and manufacturing process for front and rear dumb irons on the 'Goshawk II'. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan78 | |
| Design modifications for the front axle, spring links, and rear dumb irons. | 1st Jan 1921 | West Wittering \ F \ January1921 Scan79 | |
| Requesting instructions for Goshawk II engine cams based on Goshawk I valve lift curves. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan80 | |
| From 'E' detailing Mr. Royce's requested design change for the 'Goshawk II' cross steering joint sleeve. | 28th Jan 1921 | West Wittering \ F \ January1921 Scan81 | |
| The decision to increase the length of the rear road springs for the 'Goshawk II' model. | 29th Jan 1921 | West Wittering \ F \ January1921 Scan82 | |
| From E. discussing Mr. Royce's feedback on the rear axle tube design for the 'Goshawk II'. | 29th Jan 1921 | West Wittering \ F \ January1921 Scan83 | |
| Print LEC-1359 for a Goshawk II Landaulet Body and running board specifications. | 3rd Mar 1921 | West Wittering \ F \ March1921 Scan0 | |
| Modifications for the Goshawk I foot brake adjustment countershaft. | 3rd Mar 1921 | West Wittering \ F \ March1921 Scan1 | |
| Design modification notes and sketches for various mechanical components. | 3rd Mar 1921 | West Wittering \ F \ March1921 Scan2 | |
| Goshawk II Brake Gear, proposing the deletion of an unnecessary adjustment on the rear axle mechanism pull rods. | 3rd Mar 1921 | West Wittering \ F \ March1921 Scan3 | |
| Simplification of the front shock absorber connecting rod design for the 40/50 chassis. | 3rd Mar 1921 | West Wittering \ F \ March1921 Scan4 | |
| Memo detailing five remarks from Mr. Royce on the Brake Gear N Y/62. | 4th Mar 1921 | West Wittering \ F \ March1921 Scan5 | |
| With a sketch proposing a change to the manufacturing process for a Goshawk II front dumb iron. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan6 | |
| Drawings for the Goshawk II oil pump and filter. | 15th Mar 1921 | West Wittering \ F \ March1921 Scan7 | |
| Outlining two requested modifications for the Goshawk II front spring shackle. | 3rd Mar 1921 | West Wittering \ F \ March1921 Scan8 | |
| Dispatch of a blueprint for the Goshawk II front spring shackle. | 18th Mar 1921 | West Wittering \ F \ March1921 Scan9 | |
| Alterations required by Mr. Royce for the 'Goshawk I' hand and foot equalising brake gear. | 9th Mar 1921 | West Wittering \ F \ March1921 Scan10 | |
| Design modifications for a pull rod fork, differential box, equalising shafts, and other components. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan11 | |
| Approval notice for the 'Goshawk II' back axle tube design. | 8th Jun 1931 | West Wittering \ F \ March1921 Scan12 | |
| Alterations to the 'Goshawk II' side steering tube. | 8th Mar 1921 | West Wittering \ F \ March1921 Scan13 | |
| Mr. Royce's remarks and required alterations for the 'Goshawk II' axle, brake, and rear hub. | 10th Mar 1921 | West Wittering \ F \ March1921 Scan14 | |
| Design modifications for Michelin wheel axles, hub nuts, locking mechanisms, and brake components. | 8th Mar 1921 | West Wittering \ F \ March1921 Scan15 | |
| 'Goshawk II' universal joint behind the gearbox, referencing drawing LeC.1363. | 9th Mar 1921 | West Wittering \ F \ March1921 Scan16 | |
| Design alterations for the silencing system of the Goshawk I and II engines. | 22th Sep 1921 | West Wittering \ F \ March1921 Scan17 | |
| Design changes for an engine silencer system, including welding and brazing instructions. | 1st Jan 1921 | West Wittering \ F \ March1921 Scan18 | |
| From Mr. Royce regarding a new, improved design for the rear universal joint of the 'Goshawk II' engine. | 14th Mar 1921 | West Wittering \ F \ March1921 Scan19 | |
| Potential adoption of C.A.V. batteries as standard over Exide batteries, due to separator issues. | 16th Mar 1921 | West Wittering \ F \ March1921 Scan20 | |
| Use of Exide batteries versus the Willard scheme for cars. | 1st Mar 1921 | West Wittering \ F \ March1921 Scan21 | |
| Performance, weight, air gap, and noise characteristics of Rotax dynamos. | 16th Mar 1921 | West Wittering \ F \ March1921 Scan22 | |
| Drawing Loc.1364 for the 'Goshawk II' oil level indicator. | 15th Mar 1921 | West Wittering \ F \ March1921 Scan23 | |
| Returning incorrect lamp bulbs for an 'Essex' car and requesting suitable replacements. | 16th Mar 1921 | West Wittering \ F \ March1921 Scan24 | |
| Incompatibility of lamp bulbs with American bayonet holders on an 'ESSEX' car and requesting suitable replacements. | 16th Mar 1921 | West Wittering \ F \ March1921 Scan25 | |
| Instruction to halt work on the 'Goshawk II' rear engine suspension to modify it for a starter motor. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan26 | |
| Potential fault with the 40/50 HP petrol level indicator due to large apertures in the tank baffles. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan27 | |
| Modifications to the 'Goshawk II' oil piping and oil pump relief valve, referencing drawing Lec.1368. | 1st Mar 1921 | West Wittering \ F \ March1921 Scan28 | |
| Arrangement of the spare wheel carrier for the 'GOSHAWK II'. | 30th Mar 1921 | West Wittering \ F \ March1921 Scan29 | |
| Examination of new battery cells and comparing the improvements in an Exide battery to the current standard. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan30 | |
| Modifications to battery design and an examination of a new Tudor battery. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan31 | |
| Detailed review and feedback on the construction of a received battery. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan32 | |
| Exide and De Martis batteries, detailing their construction and performance claims. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan33 | |
| The investigation and testing of a Ni-Fe Alkaline Battery, including a diagram and comparison to an Exide battery. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan34 | |
| List of weights and capacities for different models of batteries. | 7th Mar 1921 | West Wittering \ F \ March1921 Scan35 | |
| Costs and status of various experimental batteries. | 10th Mar 1921 | West Wittering \ F \ March1921 Scan36 | |
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