| Description | Date | Identifier | |
| Report of experimental bench tests on a Dixie Aero 648 Magneto, including weight, design remarks, and distributor dimensions. | 15th Mar 1921 | West Wittering \ F \ March1921 Scan37 | |
| Test report detailing the performance and endurance of a magneto under various conditions. | 15th Mar 1921 | West Wittering \ F \ March1921 Scan38 | |
| High and low-speed sparking characteristics, resistance, and noise levels of a magneto. | 15th Mar 1921 | West Wittering \ F \ March1921 Scan39 | |
| Performance curves and heating tests for the Rotax A.T.12 Dynamo. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan40 | |
| Comparison of Rotax and Bosch machine performance, focusing on field winding resistance and output curves. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan41 | |
| Comparison of Rotax and U.S.A. Bosch dynamo performance, construction, and cooling characteristics. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan42 | |
| Comparing the A.T.4 and A.T.12 dynamos for a small car. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan43 | |
| Test results for chassis dynamo heating at maximum output. | 22th Nov 1929 | West Wittering \ F \ March1921 Scan44 | |
| Comparison of specifications for Rotax A.T.13. and U.S.A. Bosch dynamos. | 17th Mar 1921 | West Wittering \ F \ March1921 Scan45 | |
| Experimental bench tests for a B.T.H. Type F.M.6 Magneto. | 18th Mar 1921 | West Wittering \ F \ March1921 Scan47 | |
| Results of various tests on a magneto, including armature flux, platinum point gap settings, and endurance trials. | 18th Mar 1921 | West Wittering \ F \ March1921 Scan48 | |
| Various performance tests conducted on a magneto, including sparking characteristics and resistance measurements. | 18th Mar 1921 | West Wittering \ F \ March1921 Scan49 | |
| The experimental bench tests of a Sonner Type C.M.1 Magneto. | 19th Mar 1921 | West Wittering \ F \ March1921 Scan50 | |
| Results of various tests performed on a magneto. | 19th Mar 1921 | West Wittering \ F \ March1921 Scan51 | |
| The performance characteristics of a magneto, detailing its sparking range, electrical resistance, and milli-ampere output. | 19th Mar 1921 | West Wittering \ F \ March1921 Scan52 | |
| The unsatisfactory performance of a Nickel-Iron (Ni-Fe) battery for car starting compared to an acid battery. | 19th Mar 1921 | West Wittering \ F \ March1921 Scan53 | |
| The experimental bench tests and initial impressions of three different magnetos. | 21th Mar 1921 | West Wittering \ F \ March1921 Scan54 | |
| Continued page discussing selectable ranges, a forthcoming table, and tabulated bench test results for magnetos. | 21th Mar 1921 | West Wittering \ F \ March1921 Scan55 | |
| Technical memo discussing the performance and potential modifications for a Rotax dynamo. | 30th Mar 1921 | West Wittering \ F \ March1921 Scan56 | |
| Query regarding the cost-effectiveness of replacing a machine versus dismantling its armature. | 30th Mar 1921 | West Wittering \ F \ March1921 Scan57 | |
| Performance curves and firing speeds for three types of magnetos. | 31th Mar 1921 | West Wittering \ F \ March1921 Scan58 | |
| Comparison of low sparking speeds and test results for various types of magnetos. | 31th Mar 1921 | West Wittering \ F \ March1921 Scan59 | |
| Table of lowest speeds in R.P.M. for various magnetos during regular firing on 5.5mm air gaps. | 22th Mar 1921 | West Wittering \ F \ March1921 Scan60 | |
| Comparison table of various magnetos detailing their types, numbers, and performance speeds. | 19th Feb 1921 | West Wittering \ F \ March1921 Scan61 | |
| Table of results of magneto performance tests. | 23th Mar 1921 | West Wittering \ F \ March1921 Scan62 | |
| Comparative table of performance data for various magneto models. | 6th Aug 1919 | West Wittering \ F \ March1921 Scan63 | |
| Comparison table of test results for various magnetos, including resistance and output readings. | 15th Mar 1921 | West Wittering \ F \ March1921 Scan64 | |
| Mr. Royce's suggestions for strengthening the 40/50 M.P. Chassis Valve Tappet Lever. | 3rd May 1921 | West Wittering \ F \ May1921 Scan0 | |
| Position of the rear cross member and spare wheel on the Goshawk II. | 1st May 1921 | West Wittering \ F \ May1921 Scan1 | |
| Requesting Pognon plugs for testing and to notify the company of an error in their advertisement. | 5th May 1921 | West Wittering \ F \ May1921 Scan2 | |
| Advertisement for Pognon sparking plugs, with a handwritten note, and a for sale listing for a 1913 Bianchi car. | 5th Mar 1921 | West Wittering \ F \ May1921 Scan3 | |
| Advertisement supplement page from 'The Autocar' magazine for car dealers and automotive accessories. | 5th Mar 1921 | West Wittering \ F \ May1921 Scan4 | |
| The 40/50 HP breather, asking if a .625' copper pipe is sufficient for engine ventilation. | 3rd May 1921 | West Wittering \ F \ May1921 Scan5 | |
| From DA to BJ regarding accommodation for the Third Line 15 HP model and the Goshawk II project. | 3rd May 1921 | West Wittering \ F \ May1921 Scan6 | |
| Letter discussing the pros and cons of manufacturing versus purchasing bakelite insulation mouldings. | 1st May 1921 | West Wittering \ F \ May1921 Scan7 | |
| Continued letter regarding the production of Bakelite insulating parts and the difficulty in finding a manufacturer in England. | 1st May 1921 | West Wittering \ F \ May1921 Scan8 | |
| Use and modification of tungsten contacts on a low tension make and break ignition system. | 7th May 1921 | West Wittering \ F \ May1921 Scan9 | |
| Production and improvement of Dunlop wire wheels for the 'Goshawk II' project. | 11th May 1921 | West Wittering \ F \ May1921 Scan10 | |
| Design specifications for the 'Goshawk II' dynamo and starter motor, ensuring they follow specific drawings. | 21th May 1933 | West Wittering \ F \ May1921 Scan11 | |
| Suggesting an experimental part, the starter motor push button switch, be made from Bakelite instead of ebonite. | 1st May 1921 | West Wittering \ F \ May1921 Scan12 | |
| Agreeing with a suggestion to use hardened washers to reduce wear on front springs and shackles. | 1st May 1921 | West Wittering \ F \ May1921 Scan13 | |
| Effect of humidity in England on insulating materials compared to the U.S.A. or Europe. | 1st May 1921 | West Wittering \ F \ May1921 Scan14 | |
| Proposed new position of the spare wheel on the 'Goshawk II' car, pending a decision from the Sales Department. | 18th May 1921 | West Wittering \ F \ May1921 Scan15 | |
| Correspondence regarding drawing No. Lec.1389 for the 'Goshawk II' open four-seater body. | 1st May 1921 | West Wittering \ F \ May1921 Scan16 | |
| Request to create a model of a small ball joint for 'Goshawk II' controls. | 1st May 1921 | West Wittering \ F \ May1921 Scan17 | |
| The revised position of the spare wheel carrier. | 18th May 1921 | West Wittering \ F \ May1921 Scan18 | |
| Sending drawings for the Goshawk II battery ignition gear's advance and retard governor. | 18th May 1937 | West Wittering \ F \ May1921 Scan19 | |
| Enclosing drawing LeC. 1391 for the Goshawk II engine's front suspension and radiator connections. | 18th May 1921 | West Wittering \ F \ May1921 Scan20 | |
| New drawing for 'Goshawk II' clutch and brake pedals, superseding previous versions. | 18th May 1921 | West Wittering \ F \ May1921 Scan21 | |
| 'Goshawk II' connecting rod and piston, detailing instructions for creating wooden models of the combustion space. | 13th May 1921 | West Wittering \ F \ May1921 Scan22 | |
| Engine component design and manufacturing choices for the 'Buzzard' project, page 2. | 1st May 1921 | West Wittering \ F \ May1921 Scan23 | |
| Drawing for the minimum dimensions of a connecting rod stem. | 18th May 1921 | West Wittering \ F \ May1921 Scan24 | |
| The impracticality of a proposed design change for the Goshawk II crankshaft oil caps. | 21th Nov 1935 | West Wittering \ F \ May1921 Scan25 | |
| Dimensions of the 'Swallow' frame and the expectation of a drawing to be fixed up after Whitsuntide. | 13th May 1921 | West Wittering \ F \ May1921 Scan26 | |
| From E. to H.S. conveying Mr. Royce's instruction not to test expansion plugs on the Goshawk II engine. | 3rd May 1921 | West Wittering \ F \ May1921 Scan27 | |
| The riveting method for a 'Goshawk II' small ball joint for controls. | 21th May 1921 | West Wittering \ F \ May1921 Scan28 | |
| Request to test Monel metal sheets for radiators and to investigate modifying the standard nickel alloy as a cheaper alternative. | 5th May 1921 | West Wittering \ F \ May1921 Scan29 | |
| Gasket for the Goshawk II carburettor joint. | 24th May 1921 | West Wittering \ F \ May1921 Scan30 | |
| Five design points from Mr. Royce for the 'Goshawk II' rear engine support. | 1st May 1932 | West Wittering \ F \ May1921 Scan31 | |
| Design modifications for the 'Goshawk II' piston and connecting rod. | 28th May 1921 | West Wittering \ F \ May1921 Scan32 | |
| Listing C.A.V.-Willard battery numbers selected by Mr. Royce for the Goshawk and 40/50 HP cars. | 1st May 1921 | West Wittering \ F \ May1921 Scan33 | |
| Request for particulars of suitable small carburettors for a lighting engine to replace an unsatisfactory floatless model. | 2nd Jun 1921 | West Wittering \ F \ May1921 Scan34 | |
| Modification to the Woodmilne tyre pump connection proposed by Mr. Royce. | 1st May 1921 | West Wittering \ F \ May1921 Scan35 | |
| Issue with a washer spreading and a union nut being an unnecessarily tight fit. | 5th May 1921 | West Wittering \ F \ May1921 Scan36 | |
| Visit to Messrs. Lucas in Birmingham regarding Bakelite moulding and junction box fuse clips. | 4th May 1921 | West Wittering \ F \ May1921 Scan37 | |
| Discussions with Messrs. Lucas regarding fuse holders and a lengthened E.575 Dynamo. | 4th May 1921 | West Wittering \ F \ May1921 Scan38 | |
| Dynamo and motor suitability for a small car, referencing Lucas products. | 4th May 1921 | West Wittering \ F \ May1921 Scan39 | |
| Experimental bench tests for a U.S.A. Bosch Magneto type D.U.Z.6. | 4th May 1921 | West Wittering \ F \ May1921 Scan40 | |
| The design and testing of a distributor, including measurements and endurance test results. | 4th May 1921 | West Wittering \ F \ May1921 Scan41 | |
| Magneto test report detailing open/short circuit, utility, and advance/retard range results. | 4th May 1921 | West Wittering \ F \ May1921 Scan42 | |
| Test report on sparking characteristics, electrical resistance, and noise levels of an ignition component, compared to the Z.R.6 model. | 4th May 1921 | West Wittering \ F \ May1921 Scan43 | |
| Issues with obtaining satisfactory Bleriot Phi cutouts and problems with their assembly. | 10th May 1921 | West Wittering \ F \ May1921 Scan44 | |
| Discussion with a supplier regarding the specification and operation of a cut-out for an R.R. car. | 10th May 1921 | West Wittering \ F \ May1921 Scan45 | |
| Performance loss on a Watford E.6 magneto caused by its securing strap short-circuiting the magnetic flux. | 10th May 1921 | West Wittering \ F \ May1921 Scan46 | |
| Evaluation of pressure-fed grease caps and lubricators, comparing various samples to the 'Alemite' system. | 11th May 1921 | West Wittering \ F \ May1921 Scan47 | |
| Pressure-fed grease lubrication systems, comparing Alemite products and potential suppliers. | 11th May 1921 | West Wittering \ F \ May1921 Scan48 | |
| Page discussing the development of an 'Alemite' lubrication system for an experimental car. | 11th May 1921 | West Wittering \ F \ May1921 Scan49 | |
| Test results and observations on a C.A.V. cutout device under cold and hot conditions. | 18th May 1921 | West Wittering \ F \ May1921 Scan50 | |
| Technical note on ensuring operating voltage remains higher than the E.M.F. of a battery. | 18th May 1921 | West Wittering \ F \ May1921 Scan51 | |
| Responding to a query about substituting Bakelite sheets for Micanite. | 19th May 1921 | West Wittering \ F \ May1921 Scan52 | |
| Use of Bakelite as a replacement for Mica and Micanite in condensers and commutators. | 18th May 1921 | West Wittering \ F \ May1921 Scan53 | |
| Investigation into issues with thrust washers and bearings on Gleason bevel gears, detailing tests and proposed solutions. | 4th May 1921 | West Wittering \ F \ May1921 Scan54 | |
| Dynamometer testing of a modified bevel pinion and thrust bearing arrangement. | 24th May 1921 | West Wittering \ F \ May1921 Scan55 | |
| Test report detailing the seizure of a reverse pinion and subsequent damage to a gearbox on a 7.CA car. | 24th May 1921 | West Wittering \ F \ May1921 Scan56 | |
| Confirmation of a telegram telephoned to Chichester about a delay in standardizing a flexible ignition part. | 25th May 1921 | West Wittering \ F \ May1921 Scan57 | |
| Redesign of a flexible connection from the condenser to the crankchamber due to failures and sparking in the previous design. | 27th May 1921 | West Wittering \ F \ May1921 Scan58 | |
| Performance of Smith, Lucas, and C.A.V. electrical cutouts. | 31th May 1921 | West Wittering \ F \ May1921 Scan59 | |
| Comparison of the operational performance of various electrical cutouts under different temperature conditions. | 31th May 1921 | West Wittering \ F \ May1921 Scan60 | |
| Test log sheet recording the operational data of various electrical cutouts under different conditions. | 20th May 1921 | West Wittering \ F \ May1921 Scan61 | |
| Modifications and comparing the performance of a Smith Dynamo Type 2D against previous models and specifications. | 31th May 1921 | West Wittering \ F \ May1921 Scan62 | |
| The heating test of a dynamo from Messrs. Smith and its potential standardization for the 40/50 chassis. | 31th May 1921 | West Wittering \ F \ May1921 Scan63 | |
| Graph showing hot condition output curves for various dynamos against speed. | 17th May 1921 | West Wittering \ F \ May1921 Scan64 | |
| Observations on the manufacturing process of Bakelite commutators. | 5th Aug 1921 | West Wittering \ G \ August1921 Scan1 | |
| The design of inspection and filler plugs for the Goshawk II gearbox. | 1st Aug 1921 | West Wittering \ G \ August1921 Scan2 | |
| Calculations and the practical mechanical construction of the Goshawk II starter motor. | 7th Jul 1921 | West Wittering \ G \ August1921 Scan3 | |
| Modifications to the hot throttle induction pipe to improve engine performance with poor quality petrol. | 8th Aug 1921 | West Wittering \ G \ August1921 Scan4 | |
| Failure of a cell in an Exide battery due to faulty components and a request for a replacement. | 8th Aug 1921 | West Wittering \ G \ August1921 Scan5 | |
| Instruction on the cross steering tube, advising that a hole should not be made and precautions taken to prevent spelter formation. | 21th Aug 1921 | West Wittering \ G \ August1921 Scan6 | |
| The bump test comparison between American-made front springs and standard Woodhead springs. | 10th Aug 1931 | West Wittering \ G \ August1921 Scan7 | |
| The quality and testing of Bleriot Phi cutouts. | 11th Aug 1921 | West Wittering \ G \ August1921 Scan9 | |
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