| Description | Date | Identifier | |
| Index for a report on a visit to West Wittering concerning various vehicle components. | 12th Mar 1921 | West Wittering \ F \ April1921 Scan18 | |
| Proposed design modifications for the 40/50 HP Distribution Board and Tyre Pump. | 12th Mar 1921 | West Wittering \ F \ April1921 Scan19 | |
| Design decisions for 40/50 HP and Goshawk models, covering components like axles, insulation, and bodywork. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan20 | |
| Design considerations for the Goshawk II's carburettor, axles, petrol gauge, and electrical system. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan21 | |
| Design and manufacturing considerations for various automotive components including starters, steering, batteries, and clutches. | 11th Apr 1921 | West Wittering \ F \ April1921 Scan22 | |
| List of modifications relating to the Goshawk IIA flywheel casing, flywheel, and model pointer. | 12th Apr 1921 | West Wittering \ F \ April1921 Scan23 | |
| Final design drawing for the Goshawk II Landaulet body. | 12th Apr 1921 | West Wittering \ F \ April1921 Scan24 | |
| Cause of battery discharge, suggesting improved accumulator cells over increasing dynamo capacity. | 4th Apr 1921 | West Wittering \ F \ April1921 Scan25 | |
| Pre-ignitions caused by dual battery and magneto ignition systems. | 12th Apr 1921 | West Wittering \ F \ April1921 Scan26 | |
| Failure of U.S.A. Bosch magnetos and considering alternatives, including the sleeve type. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan27 | |
| Material choice for a cap related to the lubrication of front pivots on a 40/50 HP chassis. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan28 | |
| 'Goshawk II' dynamo straps and cradle, referencing drawing No. Lec.1380. | 18th Feb 1931 | West Wittering \ F \ April1921 Scan29 | |
| Design modifications for the Goshawk II propeller shaft and couplings. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan30 | |
| Examination of an old Willard battery cell, with recommendations for further testing. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan31 | |
| Pattern of a cell for an electrical starter. | 14th Apr 1921 | West Wittering \ F \ April1921 Scan32 | |
| Introduction of Stabilite moulding for switch barrels to save time and money. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan33 | |
| Experimental change to the thermostat location to reduce hunting. | 4th Apr 1921 | West Wittering \ F \ April1921 Scan34 | |
| Sheet that details the design work status for the 'Goshawk II' chassis. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan35 | |
| Proposal for a breather and oil filler to prevent engine fumes from getting into closed bodies. | 21th Apr 1921 | West Wittering \ F \ April1921 Scan36 | |
| Abandonment of a combined oil filler and breather scheme for an alternative separate design on the GOS II engine. | 20th Apr 1921 | West Wittering \ F \ April1921 Scan37 | |
| Design of a 40/50 HP hot spot induction pipe, specifically regarding the material and continuity of the steel branch pipe. | 22th Apr 1921 | West Wittering \ F \ April1921 Scan38 | |
| Design of the 'Goshawk II' engine's radiator and suspension system. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan39 | |
| Cover letter sending drawing Lec.1384 for the 'Goshawk II' oil filler and breather. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan40 | |
| Design suggestions for the 'Goshawk II' Gear Box, featuring Mr. Royce's feedback. | 25th Apr 1921 | West Wittering \ F \ April1921 Scan41 | |
| Design modifications for the 'Goshawk II' rear springs and fittings. | 25th Apr 1921 | West Wittering \ F \ April1921 Scan42 | |
| Policy document discussing the fitting of thermostats to American versus European cars, comparing bypass systems and shutters. | 25th Apr 1921 | West Wittering \ F \ April1921 Scan43 | |
| Design change to the front axle spring pad for the 'Goshawk II'. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan44 | |
| Performance of Watford magnetos and their relation to misfiring issues caused by spark plugs. | 27th Apr 1921 | West Wittering \ F \ April1921 Scan45 | |
| Use of the 'Alemite' screw syringe grease system for the 'Goshawk II' chassis lubrication. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan46 | |
| Requirements and process for producing 'Formite' and bakelite mouldings. | 27th Apr 1921 | West Wittering \ F \ April1921 Scan47 | |
| Technical memorandum discussing methods for achieving a silent dynamo by adjusting the number of teeth and pole span. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan48 | |
| Performance figures and dynamo specifications compared to the 40/50 model. | 27th Apr 1921 | West Wittering \ F \ April1921 Scan49 | |
| Alternative methods for fixing the brake quadrant on the Goshawk II gearbox, comparing studs and nuts with bolts. | 29th Apr 1929 | West Wittering \ F \ April1921 Scan50 | |
| Positioning of the spare wheel to prevent fouling on the car's hood. | 29th Apr 1921 | West Wittering \ F \ April1921 Scan51 | |
| Investigation into 'Formite' and bakelite mouldings, outlining the need for a steam-heated hydraulic press and assigning tasks for further research. | 29th Apr 1921 | West Wittering \ F \ April1921 Scan52 | |
| Drawing Lec.1357 for the 'Goshawk II' revised pedal, steering column, and driver's seat positions. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan53 | |
| Modifications to the 40/50 HP clutch mechanism for N. Series chassis. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan54 | |
| Failed 'Champion' sparking plug from a lighting engine at West Wittering. | 29th Apr 1921 | West Wittering \ F \ April1921 Scan55 | |
| Schemes for connecting the crankcase breather to the carburettor intake to manage fumes. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan56 | |
| Alterations to the pedal scheme for the 'Goshawk II' chassis, specifically for 'B' and 'D' type positions. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan57 | |
| Drawing L.c.2388 for the 'Goshawk II' fan and bracket. | 30th Apr 1921 | West Wittering \ F \ April1921 Scan58 | |
| The heating tests of a Rotax dynamo, comparing its performance against Smith and Lucas models. | 10th Apr 1931 | West Wittering \ F \ April1921 Scan59 | |
| Continued report discussing the insufficient output of dynamos based on the maker's settings. | 10th Dec 1930 | West Wittering \ F \ April1921 Scan60 | |
| Assessment report on the good and bad points of a De Martis accumulator. | 6th Apr 1921 | West Wittering \ F \ April1921 Scan61 | |
| Battery performance tests, including discharge capacity, pricing, and weight comparisons. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan62 | |
| Introducing an attached report on tungsten contacts as affected by current density. | 7th Apr 1921 | West Wittering \ F \ April1921 Scan63 | |
| Comparison of current effects on tungsten contact points in various ignition systems. | 5th Apr 1921 | West Wittering \ F \ April1921 Scan64 | |
| Cause and cure for sparking failure in distributors with tungsten contacts. | 10th Feb 1921 | West Wittering \ F \ April1921 Scan65 | |
| Technical discussion and comparison of various magneto models, their performance, weight, and reliability. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan66 | |
| New type of Lucas electrical cut-out with a compound magnetic circuit, including a schematic diagram. | 9th Apr 1921 | West Wittering \ F \ April1921 Scan67 | |
| Description of the operational speciality of an instrument's compound magnetic circuit and cut-out mechanism. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan68 | |
| Evaluation of a submitted cut-out model, detailing its performance under cold and hot conditions against specification. | 19th Apr 1921 | West Wittering \ F \ April1921 Scan69 | |
| The Smith Type 2D Dynamo with R.R. modifications, specifically dynamo number 2083. | 18th Apr 1921 | West Wittering \ F \ April1921 Scan70 | |
| Dynamo performance against specification, including price, weight, and plans for further testing. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan71 | |
| Cover letter for a preliminary report on a U.S.A. Bosch type D.U.Z.6 magneto. | 15th Apr 1921 | West Wittering \ F \ April1921 Scan73 | |
| Preliminary report on the U.S.A. Bosch Magneto D.U.Z.6, comparing it to the Z.R.6 model. | 30th Mar 1921 | West Wittering \ F \ April1921 Scan74 | |
| Instructions regarding a slip joint connection on a brush holder and other component differences from the Z.R.6 model. | 30th Mar 1921 | West Wittering \ F \ April1921 Scan75 | |
| The trial of sample tungsten contacts for a magneto contact breaker, noting they are not equivalent to platinum. | 15th Apr 1921 | West Wittering \ F \ April1921 Scan76 | |
| Test report on sample tungsten contacts from Messrs Blackwell. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan77 | |
| Engine misfiring issues related to spark gaps and worn contacts. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan78 | |
| Instruction sheet with handwritten notes on the condition of a part, noting light pitting and grey oxide. | 13th Apr 1921 | West Wittering \ F \ April1921 Scan79 | |
| Receipt of Berling magnetos from the U.S.A. and the decision not to test them. | 15th Apr 1921 | West Wittering \ F \ April1921 Scan80 | |
| Different types of Berling magnetos. | 2nd Apr 1921 | West Wittering \ F \ April1921 Scan81 | |
| Design and features of F and E type magnetos. | 2nd Apr 1921 | West Wittering \ F \ April1921 Scan82 | |
| Instruction memo discussing distributor and cam-ring design following an endurance test. | 2nd Apr 1921 | West Wittering \ F \ April1921 Scan83 | |
| Clarifying the origin of a Willard battery cell sent for examination. | 16th Apr 1921 | West Wittering \ F \ April1921 Scan84 | |
| Investigation into the winding of a Rotax dynamo armature. | 16th Apr 1921 | West Wittering \ F \ April1921 Scan85 | |
| Testing and comparison of C.A.V. Willard Thread Rubber batteries against Exide batteries. | 16th Apr 1921 | West Wittering \ F \ April1921 Scan86 | |
| Continued page of a document discussing a request for a sample battery with alterations. | 16th Apr 1921 | West Wittering \ F \ April1921 Scan87 | |
| The receipt and testing of two different Smith cutouts for experimental cars. | 18th Apr 1921 | West Wittering \ F \ April1921 Scan88 | |
| Analysis of Smith cutout operation under varying temperature and battery conditions. | 18th Apr 1921 | West Wittering \ F \ April1921 Scan89 | |
| Continued report discussing the performance and reliability of various cutout instruments, specifically the Smith cutout and No.7914. | 18th Apr 1921 | West Wittering \ F \ April1921 Scan90 | |
| Investigation report into the cause of 'singing' noise from a Rotax A.T.12 dynamo. | 19th Apr 1921 | West Wittering \ F \ April1921 Scan91 | |
| Summary regarding the performance of Lucas E.375 dynamos for the 40/50 and Goshawk chassis. | 21th Apr 1921 | West Wittering \ F \ April1921 Scan93 | |
| Comparison and evaluation of different dynamo models, including the Lucas E.575, for vehicle use. | 21th Apr 1921 | West Wittering \ F \ April1921 Scan94 | |
| Evaluation and modification of various Lucas dynamo models. | 21th Apr 1921 | West Wittering \ F \ April1921 Scan95 | |
| The Smith 2D Dynamo, including performance evaluation, specifications, and comparison with alternatives. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan96 | |
| Comparison of various electrical components including cutouts and dynamos from Smith, Lucas, C.A.V., and Rotax. | 1st Apr 1921 | West Wittering \ F \ April1921 Scan97 | |
| The performance, cost, and design of an experimental dynamo, including feedback from Mr. Royce. | 21th Apr 1921 | West Wittering \ F \ April1921 Scan98 | |
| Comparison of Rotax and Smith dynamos being considered for a 'Small Car'. | 21th Apr 1921 | West Wittering \ F \ April1921 Scan99 | |
| Evaluation of two head light dimming devices: a C.A.V. series parallel switch and a 'Rex' head light controller. | 22th Apr 1921 | West Wittering \ F \ April1921 Scan100 | |
| The working of a headlamp controller, comparing different dimming methods. | 22th Apr 1921 | West Wittering \ F \ April1921 Scan101 | |
| The performance and suitability of a 'REX' headlight controller with various lamp configurations. | 15th Apr 1921 | West Wittering \ F \ April1921 Scan102 | |
| Requesting the testing of an Alemite grease gun and its potential fitting to a chassis for Mr. Royce. | 1st Feb 1921 | West Wittering \ F \ February1921 Scan0 | |
| Proposing an alteration to the Goshawk II engine's cylinder studs to prevent the stud boss from bursting. | 2nd Feb 1921 | West Wittering \ F \ February1921 Scan1 | |
| Three methods for obtaining a square shoulder on 'Condor II' cylinder studs. | 3rd Feb 1921 | West Wittering \ F \ February1921 Scan2 | |
| Page discussing the heat treatment and normalising conditions for a steel rod after brazing. | 3rd Feb 1921 | West Wittering \ F \ February1921 Scan3 | |
| Design of the rear spring, shackle, and cantilever assembly for the 'Goshawk II' project. | 7th Feb 1922 | West Wittering \ F \ February1921 Scan5 | |
| Manufacturing and fitting of the dumb iron end and 'U' bolts for spring attachment. | 7th Feb 1921 | West Wittering \ F \ February1921 Scan6 | |
| Design changes to the 'Goshawk II' front spring and an alternative method for attaching the dumb irons. | 7th Feb 1921 | West Wittering \ F \ February1921 Scan7 | |
| Mr. Royce's suggestions for modifications to the Goshawk II axle casing and bearing arrangement to prevent oil leakage. | 21th Dec 1931 | West Wittering \ F \ February1921 Scan8 | |
| Continued memorandum detailing specifications for a bolt and a ratchet locking ring. | 1st Feb 1921 | West Wittering \ F \ February1921 Scan9 | |
| Covering memo for a report on the running of the 4.EX car in America. | 1st Feb 1921 | West Wittering \ F \ February1921 Scan10 | |
| The performance of the 4.EX car during a three-thousand-mile test run in the U.S.A. | 11th Jan 1921 | West Wittering \ F \ February1921 Scan11 | |
| Report comparing the cold-weather starting performance of cars in America and Derby, detailing issues with misfiring and distribution. | 10th Dec 1920 | West Wittering \ F \ February1921 Scan12 | |
| Comparison of car performance issues between English and American models, focusing on carburetion, gasoline quality, and pistons. | 10th Dec 1920 | West Wittering \ F \ February1921 Scan13 | |
| Car performance issues in American conditions, customer dissatisfaction, and suggested modifications. | 10th Dec 1920 | West Wittering \ F \ February1921 Scan14 | |
| Necessary modifications for vehicles operating in cold American conditions, focusing on engine starting, battery, steering, and springing. | 10th Dec 1920 | West Wittering \ F \ February1921 Scan15 | |
| Minutes of a conference discussing left-hand drive steering, gearboxes, and carburation issues. | 12th Jan 1921 | West Wittering \ F \ February1921 Scan16 | |
| Meeting discussing modifications to induction pipes, pistons, and instrument board fittings to address customer complaints and conditions in the American market. | 10th Dec 1921 | West Wittering \ F \ February1921 Scan17 | |
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