| Description | Date | Identifier | |
| Requesting the centre of gravity for slinging and removing the 'Goshawk II' engine unit. | 21th Nov 1921 | West Wittering \ H \ November1921 Scan64 | |
| The revised front dumbiron for the Goshawk II. | 22th Nov 1921 | West Wittering \ H \ November1921 Scan65 | |
| Modified design for the induction and exhaust pipe of the 'Goshawk II' engine. | 11th Nov 1921 | West Wittering \ H \ November1921 Scan66 | |
| Questioning the purchase of Dubiliers condensers and proposing design modifications for in-house production. | 21th Nov 1921 | West Wittering \ H \ November1921 Scan67 | |
| Drawing LeC.1491, which details a modification to the 'Goshawk II' undershield for an altered front suspension. | 21th Nov 1921 | West Wittering \ H \ November1921 Scan68 | |
| Use of metric versus inch-sized ball bearings for American productions. | 9th Nov 1921 | West Wittering \ H \ November1921 Scan69 | |
| Drawing Lec.1492 for a starting carburettor on the 40/50 HP chassis. | 24th Nov 1921 | West Wittering \ H \ November1921 Scan70 | |
| Visit to West Wittering with Messrs. Hives and Haldenby concerning the 'Goshawk II' vehicle. | 23th Nov 1921 | West Wittering \ H \ November1921 Scan71 | |
| Design considerations for wheels, ignition, axle leaks, and front suspension. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan72 | |
| Design considerations for the radiator, frame riveting, and water pump fixing. | 1st Nov 1921 | West Wittering \ H \ November1921 Scan73 | |
| Design points for ignition, starter, brakes, instrument board, and steering. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan74 | |
| Design decisions for pedals, petrol indicators, bonnet locks, and electrical systems for the 'Goshawk II' chassis. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan75 | |
| Typed memo discussing engineering updates and issues for various vehicle components. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan76 | |
| Design suggestions and decisions for various car components. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan77 | |
| Updates and schemes for chassis wiring, petrol feed, lubrication, radiator shutters, luggage grids, and front engine support. | 25th Nov 1921 | West Wittering \ H \ November1921 Scan78 | |
| Sending drawing Lec.1486 regarding the 'Goshawk II' engine front suspension. | 1st Nov 1921 | West Wittering \ H \ November1921 Scan79 | |
| Confirmation of a telegram regarding the composition and potential alteration of a paper condenser. | 28th Nov 1921 | West Wittering \ H \ November1921 Scan80 | |
| Confirmation of a telegram regarding a condenser problem and the procurement of specific paper. | 29th Nov 1921 | West Wittering \ H \ November1921 Scan81 | |
| The use and supply of oiled condenser paper for coil making. | 30th Nov 1921 | West Wittering \ H \ November1921 Scan82 | |
| Comparative compression tests for the 1.EX car at Brooklands, comparing high and low compression setups and the effect of wind. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan0 | |
| Performance test results for car 1.EX comparing high and low compression engine configurations with open and closed exhaust cut-outs. | 9th Aug 1922 | West Wittering \ I \ August1922 Scan1 | |
| The replacement and transport of a Goshawk car with a Hooper body. | 10th Aug 1922 | West Wittering \ I \ August1922 Scan2 | |
| Recommendation by Dunlop and Michelin to cease using security bolts for tyres, particularly cord tyres. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan3 | |
| Ineffectiveness of tyre security bolts and recommending their discontinued use with cord tyres. | 26th Jul 1922 | West Wittering \ I \ August1922 Scan4 | |
| And proposing tests for different combinations of steering systems. | 10th Aug 1922 | West Wittering \ I \ August1922 Scan5 | |
| Steering geometry, pivots, and methods for avoiding steering wobbles, with a reference to production Goshawks. | 26th Apr 1917 | West Wittering \ I \ August1922 Scan6 | |
| Report concerning a broken crankshaft and other engine damage on an 8.HP. Rover, car number LC.82886. | 11th Aug 1922 | West Wittering \ I \ August1922 Scan7 | |
| Faulty S.E.V. magneto from a Delage car and its potential future use. | 12th Aug 1922 | West Wittering \ I \ August1922 Scan8 | |
| New steering application of a radius rod for the 40/50 model to solve steering problems. | 12th Aug 1922 | West Wittering \ I \ August1922 Scan9 | |
| Arrangements and modifications for No.4 and No.6 Goshawk. | 12th Aug 1922 | West Wittering \ I \ August1922 Scan10 | |
| Agreeing to fit Goshawk 11 cars with Wefco type gaiters. | 12th Aug 1922 | West Wittering \ I \ August1922 Scan11 | |
| Request to ensure cars for personal use are insured to allow a visitor not in the company's employ to drive. | 12th Aug 1922 | West Wittering \ I \ August1922 Scan12 | |
| Recommendation concerning the use of Bakelite moulded commutators as a more economical alternative to the Mica system. | 12th Aug 1922 | West Wittering \ I \ August1922 Scan13 | |
| Query regarding the flexibility of buffer springs on a Goshawk Steering system. | 14th Aug 1922 | West Wittering \ I \ August1922 Scan14 | |
| The return of two oil pressure gauges mounted on a teak board. | 18th Aug 1922 | West Wittering \ I \ August1922 Scan15 | |
| Modifications to the buffer springs in the Goshawk 11 side steering tube. | 19th Aug 1922 | West Wittering \ I \ August1922 Scan16 | |
| DA to HS regarding the Goshawk steering system, discussing thrusts and proposed new springs. | 21th Aug 1922 | West Wittering \ I \ August1922 Scan17 | |
| The adaptation of a Goshawk 11 battery ignition to a Goshawk I chassis. | 21th Aug 1922 | West Wittering \ I \ August1922 Scan18 | |
| Complaint about the poor quality of cotton waste and a recommendation to use a woven rag wiper instead. | 21th Aug 1922 | West Wittering \ I \ August1922 Scan19 | |
| Performance of the Goshawk engine at Brooklands, defective spark plugs, and testing. | 22th Aug 1922 | West Wittering \ I \ August1922 Scan20 | |
| Experiments with spring loads and clearances for the Goshawk steering system. | 22th Aug 1922 | West Wittering \ I \ August1922 Scan21 | |
| Component issues and suggestions for improvements following a visit. | 22th Aug 1922 | West Wittering \ I \ August1922 Scan22 | |
| Requesting particulars of a bakelite fitting for a detachable terminal on the low tension wire. | 23th Aug 1922 | West Wittering \ I \ August1922 Scan23 | |
| From E. to BY. detailing Mr. Royce's requested design modifications for the Goshawk 11 Bendix Pinion. | 25th Aug 1922 | West Wittering \ I \ August1922 Scan24 | |
| Request for a longer throttle control rod for the Goshawk and an inquiry about a sparking plug spanner. | 25th Aug 1922 | West Wittering \ I \ August1922 Scan25 | |
| Seven points of interest regarding the bodywork of the No.4 Goshawk model. | 26th Aug 1922 | West Wittering \ I \ August1922 Scan26 | |
| Specifications for the tool equipment for the Goshawk model. | 26th Aug 1922 | West Wittering \ I \ August1922 Scan27 | |
| Adaptation of a Goshawk 11 Klaxon switch to the 40/50 chassis steering column. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan28 | |
| Confirmation of a wire from Royce requesting pipe dogs and screwing dies for iron water pipe. | 29th Aug 1922 | West Wittering \ I \ August1922 Scan29 | |
| Design specifications and dimensions for Goshawk bodies, comparing drawings from various coachbuilders. | 29th Aug 1922 | West Wittering \ I \ August1922 Scan30 | |
| Proposed modifications for a Goshawk open body, comparing it with designs from Hooper and Barker. | 1st Aug 1932 | West Wittering \ I \ August1922 Scan31 | |
| Continuous high-rate battery discharge tests for various proposed batteries for the Goshawk project. | 1st Aug 1932 | West Wittering \ I \ August1922 Scan32 | |
| Performance tests and comparisons of Exide, C.A.V. Willard, and P & R batteries. | 8th Aug 1922 | West Wittering \ I \ August1922 Scan33 | |
| Graph of battery curves showing continuous high rate discharge at constant circuit resistance. | 9th Aug 1925 | West Wittering \ I \ August1922 Scan34 | |
| Moulding powder with asbestos filler from the Mouldensite Company and its suitability for commutators. | 9th Aug 1922 | West Wittering \ I \ August1922 Scan35 | |
| Comparing the improved parts of 6-Goshawk-11 against 4-Goshawk-11 and recommending its modernization. | 10th Aug 1932 | West Wittering \ I \ August1922 Scan36 | |
| The investigation and repair of an S.E.V. magneto from a Delage car. | 10th Aug 1922 | West Wittering \ I \ August1922 Scan37 | |
| Concluding memo about a magneto not being required for return to West Wittering. | 10th Aug 1922 | West Wittering \ I \ August1922 Scan38 | |
| Lost petrol tank filler caps on the Goshawk 11 and recommending a retaining chain. | 10th Aug 1922 | West Wittering \ I \ August1922 Scan39 | |
| Recommendation to fit Wefco type gaiters to the road springs of Goshawk II cars. | 8th Aug 1922 | West Wittering \ I \ August1922 Scan40 | |
| Testing a modified Goshawk steering rod which eliminated shocks but increased steering wobble and instability. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan41 | |
| Comparison of steering wheel movement on 40/50 HP and 20 HP models due to the geometry of steering connections. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan42 | |
| Complaints about steering being too light and unstable, particularly when overtaking. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan43 | |
| Broken top leaf on a Goshawk 11 front road spring with reduced initial camber. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan44 | |
| Confirming the decision to adopt the Pilot Jet to replace the primer. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan45 | |
| Speed trials of the Goshawk II at Brooklands, detailing performance issues and results. | 18th Aug 1922 | West Wittering \ I \ August1922 Scan46 | |
| Modifications to the Goshawk steering system to increase friction. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan47 | |
| Upgrade options for the 4-Goshawk-11 model, focusing on potential body alterations. | 1st Aug 1922 | West Wittering \ I \ August1922 Scan48 | |
| Fitting radius rods to the front of a 40/50 chassis and the resulting improvement to steering. | 21th Aug 1922 | West Wittering \ I \ August1922 Scan49 | |
| Springs on a Goshawk-11 vehicle in France. | 22th Aug 1922 | West Wittering \ I \ August1922 Scan50 | |
| Reliability of Lodge porcelain and K.L.G. mica ignition plugs for Goshawk engines. | 3rd Jul 1922 | West Wittering \ I \ July1922 Scan0 | |
| Requesting a replacement dynamo with a mica supported commutator for a No.4 Goshawk engine. | 3rd Jul 1922 | West Wittering \ I \ July1922 Scan1 | |
| Interior design issues found in a No.3 Goshawk limousine affecting driver comfort. | 27th May 1935 | West Wittering \ I \ July1922 Scan2 | |
| Confirming Mr. Royce's agreement to alterations related to the Goshawk Tool Kit and friction flywheel withdrawal. | 4th Jul 1922 | West Wittering \ I \ July1922 Scan3 | |
| Requesting the transfer and modification of various cars and chassis for design study and temporary use. | 5th Jul 1922 | West Wittering \ I \ July1922 Scan4 | |
| Modifications to the Goshawk control gear and steering box support, including corrected lever angles. | 5th Jul 1922 | West Wittering \ I \ July1922 Scan5 | |
| The design of a Goshawk valve rocker lever without a roller, referencing drawing Lec 1608. | 5th Jul 1922 | West Wittering \ I \ July1922 Scan6 | |
| Requesting a test on a Goshawk longitudinal steering tube with specific spring buffer movements and strengths. | 5th Jul 1922 | West Wittering \ I \ July1922 Scan7 | |
| Loosening of Goshawk engine suspension bolts and proposing a test to remedy it. | 5th Jul 1922 | West Wittering \ I \ July1922 Scan8 | |
| Solution for a broken fixing on the Goshawk battery box caused by the battery being slack. | 7th Jul 1932 | West Wittering \ I \ July1922 Scan9 | |
| Failure of a Goshawk steering box and proposed design modifications. | 6th Jul 1922 | West Wittering \ I \ July1922 Scan10 | |
| Modification to the Goshawk side steering tube, based on drawing N.sch. 1308. | 7th Jul 1922 | West Wittering \ I \ July1922 Scan11 | |
| The adoption of a glass window for the Goshawk carburetter's float chamber. | 7th Jul 1922 | West Wittering \ I \ July1922 Scan12 | |
| Prohibition of bakelite commutators on dynamos for the Goshawk model. | 10th Jul 1922 | West Wittering \ I \ July1922 Scan13 | |
| The investigation of a failing magneto from a Delage car. | 10th Jul 1922 | West Wittering \ I \ July1922 Scan14 | |
| Failure of large porcelain ignition plugs on a Goshawk engine and comparing them with K.L.G. plugs. | 10th Jul 1922 | West Wittering \ I \ July1922 Scan15 | |
| Experiment for the Goshawk steering column support, conveying suggestions from Mr. Royce. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan16 | |
| Potential causes for breakages in the Goshawk battery box fixing and suggesting a test. | 12th Jul 1922 | West Wittering \ I \ July1922 Scan17 | |
| Shipment of a dynamo and a request for additional parts for a Goshawk vehicle. | 12th Jul 1922 | West Wittering \ I \ July1922 Scan18 | |
| With a sketch concerning the Goshawk clutch's centring bush and a query from Mr. Royce. | 12th Jul 1922 | West Wittering \ I \ July1922 Scan19 | |
| Proposed modification to the Goshawk luggage grid and requesting a price from Derby. | 13th Jul 1922 | West Wittering \ I \ July1922 Scan20 | |
| Drawing No. LeC 1611 for the Goshawk spring drive extracting nut, to be put through for standardisation. | 14th Jul 1922 | West Wittering \ I \ July1922 Scan21 | |
| Viability of materials for building a moulded commutator, considering heat resistance and durability. | 15th Jul 1922 | West Wittering \ I \ July1922 Scan22 | |
| Conclusion regarding the temperature rise in a starter motor based on its short duty cycle. | 10th Dec 1920 | West Wittering \ I \ July1922 Scan23 | |
| Evaluation of Amplokon spark intensifiers, concluding they are not worthwhile for the company's engines. | 17th Jul 1922 | West Wittering \ I \ July1922 Scan24 | |
| Trials of 'amplokons' with a magneto, assessing their effect on sparking performance under various conditions. | 4th Jul 1922 | West Wittering \ I \ July1922 Scan25 | |
| The testing and analysis of Amplokon spark intensifiers. | 4th May 1922 | West Wittering \ I \ July1922 Scan26 | |
| Trying an auxiliary gap at the sparking plug to overcome leakage and misfiring. | 20th Jul 1922 | West Wittering \ I \ July1922 Scan27 | |
| Updates to the front road springs and radiators for production Goshawks. | 20th Jul 1922 | West Wittering \ I \ July1922 Scan28 | |
| Material choices for the steering box, petrol tank cover threading, and the revised layout of the instrument panel. | 30th Jan 1933 | West Wittering \ I \ July1922 Scan29 | |
| | | | |
