| Description | Date | Identifier | |
| The preparation of the 98-NK car for a 10,000-mile test in France, focusing on new front springs, radiator, and tyres. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan64 | |
| Continued technical assessment of a battery's construction, components, and suitability. | 7th Apr 1924 | West Wittering \ M \ 2October1924-December1924 Scan65 | |
| Summary notes of interest on a Lithanode 78-Ampere Hour battery, comparing its specifications against requirements. | 7th Apr 1924 | West Wittering \ M \ 2October1924-December1924 Scan66 | |
| The examination and comparison of an Accu-Slem battery with an Exide battery. | 6th Dec 1923 | West Wittering \ M \ 2October1924-December1924 Scan67 | |
| Summary of seven improvements made to the Exide Battery compared to the previous standard. | 17th Mar 1921 | West Wittering \ M \ 2October1924-December1924 Scan68 | |
| Comparison of electric force in concentric sphere and cylindrical gaps using mathematical formulas. | 6th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan69 | |
| Analysis of annular spark gap design, focusing on wire-to-hole diameter ratios to prevent brush discharge. | 16th Jul 1934 | West Wittering \ M \ 2October1924-December1924 Scan70 | |
| Page discussing the principles of electric force and potential difference in relation to wire and cylinder conductors. | 16th Jul 1924 | West Wittering \ M \ 2October1924-December1924 Scan71 | |
| Page of calculations and explanations regarding the electric potential and force between a central wire and an outer conducting cylinder. | 16th Jul 1924 | West Wittering \ M \ 2October1924-December1924 Scan72 | |
| Technical paper on the advantages and physics of the annular spark gap. | 16th Jul 1924 | West Wittering \ M \ 2October1924-December1924 Scan73 | |
| Modifications to batteries, specifically regarding the sealing of cells and weight reduction. | 16th Jul 1924 | West Wittering \ M \ 2October1924-December1924 Scan76 | |
| Continued list of specifications for various components including contact breakers, magnetos, and switchboxes. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan81 | |
| Performance specifications for a magneto's firing capability, timing, and operational silence. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan82 | |
| Series of test procedures for a magneto, including endurance, circuit, and utility spark tests. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan83 | |
| Performance specification for a six-cylinder magneto with automatic advance for the BR. 40/50 car, version 2. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan84 | |
| Magneto performance, standardizing test gaps, and comparing different magneto models. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan85 | |
| Table of measurements and observations for different annular gaps, detailing spindle and hole diameters and the resulting coronal discharge. | 8th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan86 | |
| Analysis of electrostatic principles regarding annular gaps to prevent spark-over, including tests on Lucas electrode sets. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan87 | |
| Experiments to standardize a leak for testing magneto performance, simulating faulty spark plugs. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan88 | |
| Performance and experimental testing of 6-cylinder magnetos and annular spark gaps for the 40/50 Car. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan89 | |
| The performance of car 5-G-11, detailing issues with high-speed vibration and steering with balloon tyres. | 20th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan93 | |
| Announcing the specification for a standardised 20 HP chassis lighting and starting battery. | 24th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan97 | |
| Final stages and approval process for production car EAC.11. | 24th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan98 | |
| Modifying an exhaust manifold for the 40/50 HP engine. | 29th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan100 | |
| Improved method for timing the magneto and a proposal for a new gauge to set the contact breaker. | 25th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan103 | |
| The adjustment of the magneto contact breaker for 40/50 HP cars. | 25th Oct 1924 | West Wittering \ M \ 2October1924-December1924 Scan104 | |
| Design of the 'V' Series oil sump cover and drain plug. | 1st Apr 1925 | West Wittering \ M \ April1925-June1925 Scan3 | |
| Secret memo regarding a modification to the 'V' Series accelerator control to address wear issues. | 4th Mar 1925 | West Wittering \ M \ April1925-June1925 Scan4 | |
| Drawing Lec. 2040, a proposed method for anchoring the 20HP silencer to reduce longitudinal vibration. | 3rd Apr 1925 | West Wittering \ M \ April1925-June1925 Scan5 | |
| Bumping tests of an 'India' front axle and the subsequent failure of a pivot. | 1st Apr 1925 | West Wittering \ M \ April1925-June1925 Scan6 | |
| Standardising the scuttle isolation scheme for 'V' series vehicles. | 4th Apr 1925 | West Wittering \ M \ April1925-June1925 Scan11 | |
| Secret memo regarding the design and testing of a double ring piston. | 4th Apr 1925 | West Wittering \ M \ April1925-June1925 Scan12 | |
| Secret memo discussing a complaint about seating position and vision in a 'V' series car, with proposed solutions. | 1st Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan0 | |
| Confirming arrangements for an experimental 'V' Series steering setup. | 1st Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan1 | |
| Design and controls for a 'V' series rear exhaust silencer and cutout, with drawings sent for approval. | 1st Jul 1925 | West Wittering \ M \ Jan1925-March1925 Scan2 | |
| Noisy distributing gears for magnetos, removing the objection to bakelite-aluminium wheels for motor cars. | 10th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan3 | |
| Proposing a new design for a starter unit using a high-speed engine and dynamo. | 18th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan4 | |
| Secret memorandum discussing a new scheme for 'B' steering and an inverted slow-opening throttle mechanism for Series 'V' controls. | 1st Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan5 | |
| Proposal to adapt a friction drum type adjustment for a magneto coupling. | 13th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan6 | |
| Review of the 20.HP exhaust pipe on the Goshawk 2 engine, concluding no immediate alteration is needed. | 8th May 1932 | West Wittering \ M \ Jan1925-March1925 Scan8 | |
| Secret memo regarding the design of a rear silencer support for 'V' series exhaust fittings. | 14th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan9 | |
| Modifications to the 'V' series engine controls, including the layshaft, throttle mechanism, and mixture control lever. | 14th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan10 | |
| Secret memorandum regarding a complaint about 'chatter marks' on a 'V' Series Gearbox shaft. | 19th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan11 | |
| Proposed modification for a straight moulded ignition wire tube, awaiting approval from Mr. Royce. | 22th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan12 | |
| Drawing No. LeC.1985 for an exhaust silencer bracket, based on a sketch by Mr. Royce. | 1st Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan13 | |
| Secret memo discussing magneto drive coupling designs, comparing Mr. Royce's preferred taper and cone drives with the original EAC serrated type. | 28th Jan 1925 | West Wittering \ M \ Jan1925-March1925 Scan14 | |
| Design modifications for a 4-speed gearbox lever, specifically a detachable lever and a smaller knob. | 3rd Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan15 | |
| Secret memorandum discussing the control of the front axle, the use of radius rods, and different types of shackles for front brakes. | 2nd Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan16 | |
| Secret internal memo regarding the allocation of two car bodies and subframes. | 2nd May 1925 | West Wittering \ M \ Jan1925-March1925 Scan17 | |
| Drawing Lec. 1990 for an adjusting magneto coupling with a friction cone. | 7th Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan18 | |
| Using Alpe cord fabric for a flexible coupling and the need for waterproofing. | 1st Feb 1924 | West Wittering \ M \ Jan1925-March1925 Scan19 | |
| Modifications to the screw on the scale lever of the automatic advance ignition mechanism. | 11th Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan20 | |
| Tecalemit lubrication gun seen on a Lorraine-Deitritch car at a show, comparing it to a new model. | 12th Feb 1924 | West Wittering \ M \ Jan1925-March1925 Scan21 | |
| Cause and potential cure for a 'creeping out of gear' issue in a 4-speed gearbox. | 3rd Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan23 | |
| Cause of shaft creep in a 4-speed gearbox, proposing experiments and theories. | 1st Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan27 | |
| Design options and issues for a 4-speed gearbox, with diagrams of bearing arrangements. | 2nd Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan29 | |
| Design change for a spring-loaded exhaust choke valve. | 2nd Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan31 | |
| Revision of the engine's front bearer tube and associated material requirements. | 1st Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan32 | |
| Secret memo discussing a throttle governor design update involving a pinch bolt and requesting data on throttle valve opening. | 28th Feb 1925 | West Wittering \ M \ Jan1925-March1925 Scan33 | |
| Modifications to the 'V' Series underframe chassis change lever shaft. | 15th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan38 | |
| Design and manufacturing options for an engine front bearer tube. | 1st Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan40 | |
| Silchrome valves and the differing practices between aero engines and chassis. | 11th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan41 | |
| Revised scheme to cure the rattle in the dynamo drive, referencing drawing Lec. 2028. | 1st Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan43 | |
| Secret memorandum regarding the particulars of engine front suspension tubes. | 1st Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan44 | |
| Failure of torsion springs on an exhaust silencer cutout and proposing a modification with a tension spring. | 1st Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan45 | |
| Cause of steering differences in the 'V' series, potentially due to weight lifting the chassis. | 18th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan46 | |
| Secret memo discussing design suggestions for pistons, piston rings, and their balance. | 1st Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan47 | |
| Secret memo regarding drawing LeC. 2035, showing an improved strengthened piston with 5 rings. | 20th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan48 | |
| Proposed modifications to a thermometer tube and associated wiring. | 20th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan49 | |
| Secret memorandum concerning the practice of fitting piston stops and associated leakage risks. | 23th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan50 | |
| Secret internal memo regarding sending a piston drawing, Lec. 2036, for India. | 23th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan51 | |
| Use of copper tubes through cylinder castings and issues of thermal expansion. | 23th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan52 | |
| Secret memorandum regarding the 'V' Series Shutter Control and instrument board positioning. | 23th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan53 | |
| Proposed whitemetal lined steering nut for the 'V' series steering worm. | 25th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan54 | |
| Comparing the steering geometry and leverage of the new 'V' series with the older EAC. 3 model. | 3rd Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan55 | |
| Secret memo discussing the design, modification, and testing of a throttle governor control mechanism. | 1st Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan56 | |
| 'V' series scuttle isolation, involving a water trough and a semi-flexible attachment. | 30th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan57 | |
| Secret internal memorandum discussing design considerations for pistons, scraper rings, and pins. | 31th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan58 | |
| Design suggestions and potential issues for E.A.C. pistons. | 3rd Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan59 | |
| Design specifications and efficiency improvements for radiator fans. | 31th Mar 1925 | West Wittering \ M \ Jan1925-March1925 Scan60 | |
| Samples of Necol-Collodions paint and requesting the glossy black version for experiments. | 2nd Oct 1924 | West Wittering \ M \ October1924-December1924 Scan0 | |
| Potential causes for a weak bracket and worn bushes on a front brake equaliser. | 1st Oct 1924 | West Wittering \ M \ October1924-December1924 Scan1 | |
| Secret memorandum on a valve cover fixing modification to facilitate easier removal. | 1st Oct 1924 | West Wittering \ M \ October1924-December1924 Scan2 | |
| Lubrication and a suggested alteration for the 20.HP. side steering tube. | 3rd Oct 1924 | West Wittering \ M \ October1924-December1924 Scan3 | |
| Criticisms of the springing on a cabriolet, specifically internal friction and overstiffness. | 3rd Oct 1924 | West Wittering \ M \ October1924-December1924 Scan4 | |
| Secret memo from 'R' to 'EFC' regarding a modification request for the E.A.C. 11 R-R dynamo. | 6th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan5 | |
| Secret memo discussing the slow running performance of the E.A.C. engine and proposing carburetter control modifications. | 1st Oct 1924 | West Wittering \ M \ October1924-December1924 Scan6 | |
| Modifications and specifications for thin leaf type front springs. | 10th Jun 1924 | West Wittering \ M \ October1924-December1924 Scan7 | |
| Secret memo detailing the modification and relocation of the ignition coil, including material changes and mounting schemes. | 7th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan8 | |
| Investigating the source of exhaust noise on a 40/50 model before making design changes. | 18th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan9 | |
| Request for a blueprint and a report on the performance of a Goshawk disc crankshaft. | 10th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan10 | |
| Buffer clearance in relation to stiffer springs and their effect on camber and stress. | 10th Aug 1924 | West Wittering \ M \ October1924-December1924 Scan11 | |
| Bump tests on road springs, cam mounting, and a proposed continuous bending test apparatus. | 10th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan12 | |
| Materials for 40/50 chassis magneto gears, addressing issues of noise and wear. | 10th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan13 | |
| Technical memo comparing leverage fluctuations in different four-wheel brake cam designs. | 10th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan14 | |
| Secret internal memo confirming arrangements for the first three bodies of a new sports model. | 13th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan15 | |
| Adjustments and considerations for a 4-wheel brake system, focusing on the equalising lever. | 16th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan16 | |
| Testing of front springs from different manufacturers, Firths and Woodheads. | 16th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan17 | |
| The breakage of front road springs and a proposal to improve their lifespan by varying the overhang. | 21th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan18 | |
| Recommendation to test if the leather washers on the water pump fixing can be deleted without loss of grease. | 23th Oct 1924 | West Wittering \ M \ October1924-December1924 Scan19 | |
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