| Description | Date | Identifier | |
| Dimensional changes for a stiffer crankshaft for the Goshawk 11 engine. | 17th Mar 1922 | West Wittering \ H \ March1922 Scan7 | |
| Design and features of the Peregrine Gear-Box. | 10th Mar 1922 | West Wittering \ H \ March1922 Scan8 | |
| Design simplifications for mechanical components such as bolt stops and pinion pins. | 10th Mar 1922 | West Wittering \ H \ March1922 Scan9 | |
| Logistics and status of D.F.P., Fiat, 20.HP, Delage, and Essex cars. | 16th Mar 1922 | West Wittering \ H \ March1922 Scan10 | |
| Crankshaft proportions and crankcase design for the Peregrine engine. | 17th Mar 1922 | West Wittering \ H \ March1922 Scan11 | |
| Design of the Peregrine front axle, comparing it to the Goshawk 11 and specifying wheel options. | 1st Mar 1922 | West Wittering \ H \ March1922 Scan12 | |
| Design of the Peregrine rear axle, its components, wheel options, and comparison to the Goshawk 11. | 27th Mar 1922 | West Wittering \ H \ March1922 Scan13 | |
| The design of the Peregrine rear axle, discussing bevel gears, reduction ratios, and comparison to the Goshawk II. | 27th Mar 1922 | West Wittering \ H \ March1922 Scan14 | |
| Design, forging, balancing, and oiling instructions for the Peregrine Crank Shaft. | 28th Mar 1922 | West Wittering \ H \ March1922 Scan15 | |
| Specifications for crankshaft balancing and component design. | 17th Mar 1922 | West Wittering \ H \ March1922 Scan16 | |
| Crankcase oil leak on the Goshawk 11 engine and proposing a modified cover design. | 17th Mar 1922 | West Wittering \ H \ March1922 Scan17 | |
| Proposed alternative design for an oil flinger, requiring an alteration to the crankshaft. | 18th Mar 1922 | West Wittering \ H \ March1922 Scan18 | |
| Modifications to the Goshawk 11 engine's induction and exhaust pipes. | 18th Mar 1922 | West Wittering \ H \ March1922 Scan19 | |
| Telegram with instructions for modifications to a Goshawk engine scuttle and the supply of specific screws. | 2nd Mar 1930 | West Wittering \ H \ March1922 Scan20 | |
| Modified pedals and footboard for the Goshawk II 'B' type chassis. | 22th Mar 1922 | West Wittering \ H \ March1922 Scan21 | |
| Feasibility of fitting a larger battery to the Goshawk 11, proposing a new location, and clarifying the dismounting procedure. | 24th Mar 1922 | West Wittering \ H \ March1922 Scan22 | |
| Modifications for the Goshawk 11 wiring and practical diagram. | 28th Mar 1922 | West Wittering \ H \ March1922 Scan23 | |
| Communication about exchanging schemes for a rear tail light and its wiring. | 31th Mar 1922 | West Wittering \ H \ March1922 Scan24 | |
| Lubrication of the cam for the ignition make and break system on the Goshawk 11 engine. | 31th Mar 1922 | West Wittering \ H \ March1922 Scan25 | |
| Continuous high rate discharge tests conducted on various batteries for comparison purposes. | 8th Feb 1922 | West Wittering \ H \ March1922 Scan26 | |
| Performance and specifications of various car batteries. | 2nd Feb 1922 | West Wittering \ H \ March1922 Scan27 | |
| Standardisation of batteries and comparing three types for the Goshawk. | 8th Feb 1922 | West Wittering \ H \ March1922 Scan28 | |
| Installation and comparison of various battery types for Goshawk chassis. | 8th Feb 1922 | West Wittering \ H \ March1922 Scan29 | |
| Price list for various 40/50 Chassis and Goshawk batteries. | 1st Oct 1921 | West Wittering \ H \ March1922 Scan30 | |
| Graph of continuous high-rate discharge curves for various chassis batteries. | 1st Oct 1921 | West Wittering \ H \ March1922 Scan31 | |
| Graph of continuous high-rate discharge curves for various chassis batteries through an invariable external resistance. | 8th Oct 1921 | West Wittering \ H \ March1922 Scan32 | |
| Graph comparing the performance curves of different batteries under continuous high-rate discharge. | 8th Oct 1921 | West Wittering \ H \ March1922 Scan33 | |
| Graph of battery discharge curves under continuous high rate discharge with a constant circuit resistance. | 13th Feb 1922 | West Wittering \ H \ March1922 Scan34 | |
| Comparative tests of R.R. and C.A.V. starting equipment. | 13th Feb 1922 | West Wittering \ H \ March1922 Scan35 | |
| Comparison of engine starting performance between the C.A.V. system and the R.R. system under hot conditions. | 13th Feb 1922 | West Wittering \ H \ March1922 Scan36 | |
| Analysis of battery and starter motor performance, comparing expected values to actual measurements under cold and hot conditions. | 13th Feb 1922 | West Wittering \ H \ March1922 Scan37 | |
| The power consumption of the starter system under average conditions. | 13th Feb 1922 | West Wittering \ H \ March1922 Scan38 | |
| Responding to a query about the status of D.F.P., Essex, and Delage cars, concerning parts and licences. | 16th Mar 1922 | West Wittering \ H \ March1922 Scan40 | |
| Explanation of a diagram used to derive advance curves for governor weights using different springs. | 27th Mar 1922 | West Wittering \ H \ March1922 Scan41 | |
| Report page discussing engine advance curves, spring ratings, and governor design. | 27th Mar 1922 | West Wittering \ H \ March1922 Scan42 | |
| Continued analysis of governor weight and spring characteristics to achieve a desired advance curve. | 1st Aug 1922 | West Wittering \ H \ March1922 Scan43 | |
| Analysis of a governor mechanism's performance and discussion of alternative designs. | 27th Mar 1922 | West Wittering \ H \ March1922 Scan44 | |
| Diagram for determining the advance characteristic of a Goshawk ignition governor. | 23th Mar 1932 | West Wittering \ H \ March1922 Scan45 | |
| Technical description and assessment of a C.A.V. Dynamo for the Goshawk project. | 2nd Nov 1921 | West Wittering \ H \ November1921 Scan0 | |
| Page 2 of a report detailing dynamo specifications, weight, and bench test results. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan1 | |
| Comparison of dynamo machine performance against a Lucas unit, proposing a trial on Goshawk chassis. | 2nd Nov 1921 | West Wittering \ H \ November1921 Scan2 | |
| The vibration test of a C.A.V. Willard 12XRE battery, showing charge and discharge capacities. | 3rd Nov 1921 | West Wittering \ H \ November1921 Scan4 | |
| Cracked battery cell that was returned to the makers for inspection and replacement. | 3rd Nov 1921 | West Wittering \ H \ November1921 Scan5 | |
| Proposal from The Chloride Company to switch from bolted to burnt-up connections for Exide batteries. | 10th Oct 1921 | West Wittering \ H \ November1921 Scan6 | |
| Cover letter for a report on the experimental performance of platinum versus brass battery ignition distributor points. | 10th Nov 1921 | West Wittering \ H \ November1921 Scan7 | |
| Comparison test of standard platinum and experimental brass H.T. distributor points under different ventilation conditions. | 9th Nov 1921 | West Wittering \ H \ November1921 Scan8 | |
| Conclusion on the performance of brass and tungsten for jump spark points and the effects of distributor ventilation. | 7th Nov 1921 | West Wittering \ H \ November1921 Scan9 | |
| Distributing and summarizing reports on the investigation and testing of tungsten contact points. | 10th Nov 1921 | West Wittering \ H \ November1921 Scan10 | |
| Report discussing the performance of paper and mica condensers and a comparison of tungsten and platinum contacts in ignition systems. | 10th Nov 1921 | West Wittering \ H \ November1921 Scan11 | |
| Test report on running tungsten contacts on a lower voltage. | 6th Oct 1921 | West Wittering \ H \ November1921 Scan12 | |
| The tests of tungsten contact points with double capacity and on 6 volts to suppress sparking. | 7th Nov 1921 | West Wittering \ H \ November1921 Scan13 | |
| Continued test report on distributor rollers, contact points, and the effects of different condenser types. | 19th Feb 1921 | West Wittering \ H \ November1921 Scan14 | |
| Sourcing, testing, and pricing of platinum iridium contact points with reduced platinum content. | 10th Nov 1921 | West Wittering \ H \ November1921 Scan15 | |
| Preliminary investigation report on a C.A.V. Type 'EB' motor for a 40/50 chassis. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan16 | |
| Test report detailing the specifications and initial performance of a machine or motor. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan17 | |
| The poor performance of a motor during a brake test, with analysis of potential causes and comparison to an SC type machine. | 10th Feb 1921 | West Wittering \ H \ November1921 Scan18 | |
| Motor resistances and the decision not to fit a specific motor to the 40/50 chassis for trial. | 12th Nov 1921 | West Wittering \ H \ November1921 Scan19 | |
| Comparing the performance of various dynamos for the Goshawk. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan20 | |
| Performance, pricing, and testing of Lucas, C.A.V., and Rotax dynamos. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan21 | |
| Graph of Ampere Output versus Speed curves for various dynamos submitted for the Goshawk engine under hot conditions. | 11th Nov 1931 | West Wittering \ H \ November1921 Scan23 | |
| Generator parts being affected by crankcase vapours on the Goshawk engine. | 15th Nov 1921 | West Wittering \ H \ November1921 Scan24 | |
| Unsuccessful experiment to improve the performance of a Standard Lucas E.575 Dynamo. | 15th Nov 1921 | West Wittering \ H \ November1921 Scan25 | |
| On the difficulties and experiments in manufacturing condensers, focusing on sourcing and testing suitable insulating paper. | 16th Nov 1921 | West Wittering \ H \ November1921 Scan26 | |
| Continued discussion on condenser design, comparing materials like twin paper and mica, and analysing capacity and efficiency. | 10th Dec 1930 | West Wittering \ H \ November1921 Scan27 | |
| Goshawk ignition condensers, comparing mica and paper types and potential design modifications. | 16th Nov 1921 | West Wittering \ H \ November1921 Scan28 | |
| Conclusion on the selection of a C.A.V. type DB dynamo for the Goshawk chassis based on its output characteristics. | 1st Nov 1921 | West Wittering \ H \ November1921 Scan29 | |
| The Goshawk dynamo output, ballast resistance, and starting issues with the 40/50 car. | 21th Nov 1921 | West Wittering \ H \ November1921 Scan30 | |
| Volume and construction of condensers for a 'Goshawk' ignition system. | 24th Nov 1921 | West Wittering \ H \ November1921 Scan31 | |
| Properties and development of paper and mica condensers. | 24th Nov 1921 | West Wittering \ H \ November1921 Scan32 | |
| Continued report on the construction and testing of a condenser made from tin foil and mica. | 24th Nov 1921 | West Wittering \ H \ November1921 Scan33 | |
| The receipt and inspection of Peto & Radford batteries for 40/50 and Goshawk models. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan34 | |
| Continued report on battery accumulators, discussing terminal lugs, porcelain vents, and plate improvements. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan35 | |
| The charging rate of a Lucas dynamo and a comparison between battery ignition and magneto performance at slow speeds. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan36 | |
| The small output of the Lucas 'Goshawk' dynamo and the effects of changing the brush setting. | 30th Nov 1921 | West Wittering \ H \ November1921 Scan37 | |
| Goshawk II where the coachbuilder has made the rear seat too high, with suggestions for a remedy. | 2nd Nov 1921 | West Wittering \ H \ November1921 Scan38 | |
| Lubrication of the oil pump drive for the 'Goshawk II' engine. | 1st Nov 1921 | West Wittering \ H \ November1921 Scan39 | |
| Drawing Lec.1476 for a strengthened method of holding slider guides in the 'Goshawk II' gear box. | 2nd Nov 1921 | West Wittering \ H \ November1921 Scan40 | |
| Requesting the Production Drawing Office create a sheet with scale drawings of various gearbox plugs. | 9th Nov 1921 | West Wittering \ H \ November1921 Scan41 | |
| Telegram suggesting engine modifications to reduce noise, involving valve springs, ports, camshaft, dampers and clutch. | 3rd Nov 1921 | West Wittering \ H \ November1921 Scan42 | |
| Design and materials for an inexpensive and efficient ignition system condenser. | 4th Nov 1921 | West Wittering \ H \ November1921 Scan43 | |
| Modifications and performance issues with the 40/50 HP engine's winter carburation system. | 3rd Nov 1921 | West Wittering \ H \ November1921 Scan44 | |
| Letter discussing body design for the 'Goshawk II', highlighting issues with dimensions provided by Derby to the coachbuilder Mulliners. | 3rd Nov 1921 | West Wittering \ H \ November1921 Scan45 | |
| Potential purchase of cars with 4-wheel braking, similar to the Goshawk model, seen at the Olympia show. | 5th Nov 1921 | West Wittering \ H \ November1921 Scan46 | |
| Forming a committee to examine cars at shows and purchase one that resembles a Goshawk 11. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan47 | |
| Modifications to drawing No. Lec.1469 for the 'Goshawk II' distribution board with automatic switch. | 10th Nov 1921 | West Wittering \ H \ November1921 Scan48 | |
| C.A.V. dynamo for the 'Goshawk II' and recommendations for its brushes. | 10th Nov 1921 | West Wittering \ H \ November1921 Scan49 | |
| Ordering Bakelite-Dilecto sheets and tubes, and discussing confusion about the material's specifications. | 10th Oct 1921 | West Wittering \ H \ November1921 Scan50 | |
| Proposed lubrication system alterations for the 'Goshawk' engine. | 21th Nov 1921 | West Wittering \ H \ November1921 Scan51 | |
| Memo from C.L. to H.S. regarding an investigation into an oil leak on a Goshawk II chassis, as requested by Mr. Royce. | 12th Nov 1921 | West Wittering \ H \ November1921 Scan52 | |
| Report of impressions from the Olympia Motor Car Show of November 1921, comparing vehicles and manufacturing conditions. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan53 | |
| Assessing competitor automotive technologies and discussing the company's experimental development strategy. | 15th Nov 1921 | West Wittering \ H \ November1921 Scan54 | |
| Query regarding an oil leak from the 'Goshawk II' back axle. | 16th Nov 1921 | West Wittering \ H \ November1921 Scan55 | |
| Benefits of battery ignition over magneto ignition for the Goshawk II engine. | 18th Nov 1934 | West Wittering \ H \ November1921 Scan56 | |
| Modifying the Goshawk II front cross member after a breakage during a bump test. | 18th Nov 1931 | West Wittering \ H \ November1921 Scan57 | |
| Examination of steering joints on the Goshawk II chassis and questioning their performance. | 1st Nov 1921 | West Wittering \ H \ November1921 Scan58 | |
| Specifying the required types of Bakelite products for different applications. | 14th Nov 1921 | West Wittering \ H \ November1921 Scan59 | |
| Inquiring about the performance of joints on the 'Goshawk II' cross steering tube. | 17th Nov 1921 | West Wittering \ H \ November1921 Scan60 | |
| Redesign and redrawing of the lighting and ignition switch for the 'Goshawk II'. | 17th Nov 1921 | West Wittering \ H \ November1921 Scan61 | |
| 'Goshawk II' clutch, detailing an improved thrust bearing and the necessary alteration to the clutch shaft. | 1st Nov 1921 | West Wittering \ H \ November1921 Scan62 | |
| Drawing showing alterations to the 'Goshawk II' undershield. | 28th Nov 1921 | West Wittering \ H \ November1921 Scan63 | |
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