| Description | Date | Identifier | |
| Modifications to the 20HP steering system to reduce road shock. | 1st Oct 1925 | West Wittering \ N \ October1925-December1925 Scan1 | |
| Requesting comparative weights for the India front axle against the old axle and stating the weight of a new forging. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan2 | |
| Design changes to the India front axle pivot and requesting a 10,000 miles bumping test. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan3 | |
| Device for curing squeaking brakes on 20.HP cars. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan4 | |
| Defects in an India Front Axle forging that are causing it to twist. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan5 | |
| Modifications to the Phantom petrol tank, specifically abandoning the weir system for a new level device and enlarging filters. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan6 | |
| The manufacturing difficulty of whitemetal lined steering nuts and a proposed solution. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan7 | |
| Mr. Royce's request to machine down a Phantom front axle to test how light it can be before becoming weak. | 3rd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan8 | |
| Design modifications for the Phantom petrol tank. | 3rd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan9 | |
| Potential weight-saving improvements to the brake system for the 10,000 miles Phantom car. | 1st Oct 1925 | West Wittering \ N \ October1925-December1925 Scan10 | |
| DA to HS regarding modifications for the India 10,000 miles car. | 3rd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan11 | |
| Correspondence agreeing to a proposed method for fitting India rear squeak dampers. | 5th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan12 | |
| With sketches proposing modifications to the India front brake dust cover. | 5th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan13 | |
| Modifications and design ideas for Phantom silencers. | 1st Oct 1925 | West Wittering \ N \ October1925-December1925 Scan14 | |
| List of modifications for the Phantom Engine 'Z' series and the next car for France. | 6th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan15 | |
| List of modifications for the 'Z' Series Phantom Frame and the next car destined for France. | 6th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan16 | |
| List of specifications and proposed modifications for vehicle components, numbered 13 to 19. | 6th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan17 | |
| List of modifications for the 'Z' Series Phantom Frame and the next car to run in France. | 6th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan18 | |
| List of vehicle component specifications and design proposals, continued on page 2. | 2nd Oct 1925 | West Wittering \ N \ October1925-December1925 Scan19 | |
| Issues with Rapson tyres, their balance and contribution to steering wobble. | 10th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan20 | |
| New louvered bonnet design for the Phantom, referencing scheme 2064 and car 7-EX. | 7th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan21 | |
| Comparing the quietness of American Bosch, Smith, and Peerless windscreen wipers. | 12th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan22 | |
| Insufficient heating on a Phantom induction pipe, proposing modifications and requesting temperature tests. | 12th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan23 | |
| Modifications to the Phantom silencer, including material changes and a suggestion from Mr. Royce. | 12th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan24 | |
| New design for a large worm outside pendulum lever type steering for the Goshawk model. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan25 | |
| Proposing to shorten wire wheel hubs, similar to what was done for steel artillery wheels. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan26 | |
| New design for the Phantom front axle, stub axles, and steering levers to save weight. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan27 | |
| Benefits of using a stepped dashboard for the Phantom & Goshawk models. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan28 | |
| Potential purchase of competitor cars, the Austro-Daimler and the Bentley, for analysis. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan29 | |
| Bentley 40HP car's engine and chassis compared to their own. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan30 | |
| Weight-saving campaign for the New Phantom, comparing performance to competitors, and suggesting duralumin main bearing caps. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan31 | |
| Supply difficulties with duralumin pressings for the brake carrier and suggesting proceeding with an aluminium casting. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan32 | |
| Expressing doubt about the necessity and effectiveness of air cleaners for cars on English roads. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan33 | |
| The dilution of oil with petrol, suggesting a scheme to trap it before it reaches the cylinders. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan34 | |
| Improvement of the Phantom exhaust system and a trial of a smaller aluminium silencer. | 10th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan35 | |
| Implementation of a lubrication piping system to inaccessible points for owner-drivers. | 13th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan36 | |
| Proposed modifications for the New Phantom chassis. | 15th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan37 | |
| The delayed delivery of a New Phantom car chassis to the coachbuilders. | 15th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan38 | |
| With sketches discussing modifications to Phantom pistons to resolve knocking issues. | 15th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan39 | |
| Design sketch and discussion of a horizontally-slit, one-piece aluminium piston with two-bolt steel pedestals. | 11th Aug 1920 | West Wittering \ N \ October1925-December1925 Scan40 | |
| Potential overstressing of springs in the Phantom's side steering tube due to deflection allowances. | 17th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan41 | |
| Letter from 'R.' to 'CJ.' regarding the decision to use a 4-speed gearbox over a 3-speed, due to buyer preference and overcoming design issues. | 19th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan42 | |
| Questioning the proposed experimental work on a three-speed gearbox for the 40/50 HP chassis. | 16th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan43 | |
| From R. to H.S. regarding a change to the New Phantom exhaust cutout. | 19th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan44 | |
| Outlining Mr. Royce's decision not to use a multiple plate clutch arrangement for the India Front Axle. | 22th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan45 | |
| Potential modifications to the Phantom four-wheel brake system to adjust friction and prevent thumping. | 22th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan46 | |
| Proposal for a revised method of manufacturing 'India Front Springs' to increase their lifespan by adding an extra plate. | 22th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan47 | |
| Revised seating positions, pedals, and steering columns for a chassis. | 22th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan48 | |
| Sending drawings for a modified hollow dashboard, its specifications, and steering adaptations. | 22th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan49 | |
| Preliminary layout and advantages of the modified EAC.8 Phantom chassis. | 22th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan50 | |
| Aero engine and chassis matters, including superchargers, engine names and magnetos. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan51 | |
| On gear reduction for aero engines, contrasting epicyclic and spur gears, and detailing the Eagle XVI design. | 28th Oct 1932 | West Wittering \ N \ October1925-December1925 Scan52 | |
| Use of artillery wheels, comparing their weight and strength to alternatives. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan53 | |
| Supplying a drawing for boxing in the change gear system on Phantom and India models to prevent fumes in bodies. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan54 | |
| Alteration to the 4-wheel brake servo spring arrangement for the Phantom & India models. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan55 | |
| The reasons for moving towards a shorter chassis and the associated design modifications. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan56 | |
| Design decisions regarding the gearbox suspension, frame, radiator, and other chassis components. | 19th Oct 1928 | West Wittering \ N \ October1925-December1925 Scan57 | |
| Internal memorandum detailing impressions from a motor show and proposed improvements for the Phantom I chassis. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan58 | |
| Results of testing Shell super light racing oil and its performance compared to thicker oils. | 24th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan59 | |
| Running experience of Phantom cars, chassis weight reduction, and the development of hydraulic shock absorbers. | 27th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan60 | |
| Proposal for revised springs in a side steering tube, comparing the stress levels of the existing and proposed designs. | 27th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan61 | |
| Expressing opinions on car body design, specifically avoiding heavy, top-heavy, and cramped bodies. | 27th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan62 | |
| Scheme 2066 for 'India Steering', detailing layout, limitations, and a proposed experimental steering lever for the New Phantom. | 28th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan63 | |
| Strategies for reducing the weight of various chassis and engine components for the EAC. 8. model. | 29th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan64 | |
| Expressing disapproval of a trial car body's weight and the use of a smaller-than-standard steering wheel. | 29th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan65 | |
| Confirmation to use screwed-in valve seats from the RR. F.X. design for the Eagle 16 cylinder head. | 30th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan66 | |
| Factors affecting Phantom braking distances, such as pedal operation speed and its influence on the servo system. | 31th Oct 1925 | West Wittering \ N \ October1925-December1925 Scan67 | |
| With sketches requesting tests on four different induction pipe and carburettor systems for the EAC engine. | 1st Nov 1925 | West Wittering \ N \ October1925-December1925 Scan68 | |
| From 'R' to 'HS' outlining the progress and expected completion of various design and experimental projects. | 2nd Nov 1925 | West Wittering \ N \ October1925-December1925 Scan69 | |
| Scheme N. 2077 for a radiator with integral shutters, comparing it to the previous 'W' series. | 3rd Nov 1925 | West Wittering \ N \ October1925-December1925 Scan70 | |
| Modifications to the radiator suspension, cross member, and engine supporting arms for scheme 2076. | 3rd Nov 1925 | West Wittering \ N \ October1925-December1925 Scan71 | |
| Accelerator pedal layout for 'C' and 'D' type models, noting a control rod modification. | 11th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan72 | |
| Scheme 2084, a full-sized layout confirming engine position in the frame. | 4th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan73 | |
| Layout of 'B' type pedals with reference to scheme 2072. | 4th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan74 | |
| Different positions of the 'W' series accelerator pedal, referencing scheme 2078. | 5th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan75 | |
| Alternative radiator suspension design, N.scheme 2086, using spherical supports. | 7th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan76 | |
| Proposal for a new hydraulic shock damper for the Phantom model, detailing necessary modifications. | 7th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan77 | |
| Modification to the F.10 engine specification, increasing the stroke, capacity, and power output. | 7th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan78 | |
| Request for various parts to be sent to Barkers for an Experimental Cabriolet, including a suggestion for an electric screen wiper. | 7th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan79 | |
| Instructions for oil fittings and piping on the Eagle 16 test engine. | 9th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan80 | |
| Carburetter options for the Eagle 16 engine. | 1st Nov 1925 | West Wittering \ N \ October1925-December1925 Scan81 | |
| Postponing instructions for the Eagle 16 engine's ignition wire fittings and screening. | 9th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan82 | |
| Proposing the standardization of a new switchbox design for 40/50 & 20HP models. | 10th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan83 | |
| Parts required to complete chassis 9-PK, an Enclosed Limousine, at Hoopers coachbuilders. | 11th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan84 | |
| On the reasoning for introducing a stepped dashboard and its impact on the steering column, scuttle, and bonnet length. | 11th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan85 | |
| Observations on seating arrangements for passenger and driver comfort, and personal notes on tyre preferences. | 12th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan86 | |
| Scheme 2087, showing the outline for an India front axle side steering lever with an experimental ball end. | 12th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan87 | |
| The mounting of a new hydraulic shock absorber for the 40/50 model. | 13th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan88 | |
| Layout and shortening of the side steering tube. | 13th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan89 | |
| Standard steering wheel and seat dimensions, with a proposal for a new trial wheel design. | 16th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan90 | |
| New front axle design for the Phantom to reduce steering wobbles. | 16th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan91 | |
| From R. to EFC requesting a report on the Sequence Starter. | 17th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan92 | |
| Cold weather testing in France, focusing on carburation, induction pipes and the viscosity of lubricating oil. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan93 | |
| Proposal to delete ribs from Phantom brake drums for a weight reduction campaign. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan94 | |
| Awaiting the results of modified pistons designed to increase skirt flexibility and prevent knocking. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan95 | |
| Drawing LeC. 2169 for a crankcase breather. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan96 | |
| Steering, tyre pressures, and proposed improvements to axle and suspension. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan97 | |
| Design adjustments and component specifications for a chassis. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan98 | |
| Confidential memorandum detailing the features and improvements of a new chassis, EAC. 1. | 24th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan99 | |
| Testing an increased diameter tie-rod to improve frame stiffness and considering a redesign of the 40/50 gearbox. | 18th Nov 1925 | West Wittering \ N \ October1925-December1925 Scan100 | |
| | | | |
