| Description | Date | Identifier | |
| Trial of gauze filters for Phantom and 20HP models to address low-speed jet issues. | 12th Mar 1927 | West Wittering \ Q \ January1927-March1927 133 | |
| Questioning the necessity of front wheel brake squeak dampers and proposing an alternative design. | 13th Mar 1927 | West Wittering \ Q \ January1927-March1927 134 | |
| Design proposals for a rear shock damper. | 14th Mar 1927 | West Wittering \ Q \ January1927-March1927 135 | |
| Design modifications and testing of two proposed EAC. 8 radiator variants. | 17th Mar 1927 | West Wittering \ Q \ January1927-March1927 136 | |
| Spring load and coefficient of friction for a servo linkage. | 17th Mar 1927 | West Wittering \ Q \ January1927-March1927 137 | |
| Suggesting two ideas to improve steering geometry and reduce high and low speed wobbles. | 22th Mar 1927 | West Wittering \ Q \ January1927-March1927 138 | |
| Technical memorandum discussing various potential improvements and combinations for vehicle steering systems. | 22th Mar 1927 | West Wittering \ Q \ January1927-March1927 139 | |
| New bonnet lock and fastener, scheme 2372, for trial on the 20HP model. | 22th Mar 1927 | West Wittering \ Q \ January1927-March1927 140 | |
| Improved radiator and bonnet design for the 40/50 model to avoid a thick appearance. | 25th Mar 1927 | West Wittering \ Q \ January1927-March1927 141 | |
| Proposal to strengthen the 20HP step-irons by modifying existing dies to avoid scrapping them. | 25th Mar 1927 | West Wittering \ Q \ January1927-March1927 142 | |
| Reduction of sponginess in the EAC 7 brakes with suggestions for improvement. | 25th Mar 1927 | West Wittering \ Q \ January1927-March1927 143 | |
| Strengthened step-iron for the Phantom model and proposals for an extra step-iron on the short chassis. | 25th Mar 1927 | West Wittering \ Q \ January1927-March1927 144 | |
| Saloon Cab De Ville body for India, nearing completion at Hoopers, and the need for a chassis. | 26th Mar 1927 | West Wittering \ Q \ January1927-March1927 145 | |
| Alternative schemes for a charge indicator to save the battery and dynamo on 40/50 & 20HP models. | 29th Mar 1927 | West Wittering \ Q \ January1927-March1927 146 | |
| Design options for scraper rings for either car or aero engines. | 4th Apr 1927 | West Wittering \ Q \ January1927-March1927 147 | |
| Specifying the dimensions for the matrix tubes of a Phantom radiator. | 31th Mar 1927 | West Wittering \ Q \ January1927-March1927 148 | |
| Solutions for steering column vibrations on the 10-EX model by increasing the column diameter. | 2nd Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan001 | |
| Deletion of rear shutters and bonnet louvres for the Phantom & Goshawk models. | 5th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan002 | |
| Frame for experimental car models EAC.10 and EAC.12, adapting parts from model EAC.7. | 8th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan003 | |
| Dispatch and requested completion of an incomplete chassis arrangement drawing for EAC. 7. | 8th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan004 | |
| Revised rear end for chassis EAC.7 and redirecting work priorities to EAC.10. | 8th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan005 | |
| The proposed layouts for schemes EAC 10 and 12, detailing the hypoid axle gear eccentricity. | 8th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan006 | |
| Modifications to the 20HP crankshaft, including an increased journal bearing diameter and a G.1. slipper flywheel. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan007 | |
| Outlining the features of a new experimental 20HP model. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan008 | |
| Phantom steering and radiator improvements, specifically for the 10-EX model. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan009 | |
| Improving the riding qualities of 40/50 and 20HP cars. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan010 | |
| Advocating for 19-inch wheels with 6-inch tyres on the 20HP model for aesthetic reasons. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan011 | |
| Proposal to improve road clearance on Phantom and 20HP models by modifying the exhaust and petrol tank sump. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan012 | |
| Design and production of Phantom wing stays and head-light fixings. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan013 | |
| Deletion of back bonnet shutters and the creation of a less expensive alternative. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan014 | |
| New scheme for Phantom exhaust pipes for chassis fitted with front axle control. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan015 | |
| Alterations and improvements to the 20HP starter mechanism. | 9th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan016 | |
| From 'R' to 'EFC' expressing frustration about a lack of comparative information on battery ignition systems. | 11th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan017 | |
| From 'R' to 'BJ' discussing the Blue Sports Phantom 10-EX model, its performance, marketing, and future engine development. | 11th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan018 | |
| Reminder to rig up the hydraulic damper in the steering system to a specific load and torque. | 7th Dec 1927 | West Wittering \ Q \ July1927-September1927 Scan019 | |
| Proposed improvement for the Phantom's rear spare wheel. | 12th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan020 | |
| Suggestions and modifications for improving the 20HP starter for reliability. | 12th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan021 | |
| Rebuilding the EAC.7 model chassis and troubleshooting issues with the starter motor solenoid. | 12th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan022 | |
| Proposed steering modifications for the Phantom model for trial. | 14th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan023 | |
| Second modification for a future clutch and spring setup on the 20HP BIJUR model. | 14th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan024 | |
| Increase to the automatic ignition advance on the 20HP model to reduce detonation. | 14th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan025 | |
| Status and queries about grouped instruments for new 40/50 and 20HP models. | 14th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan026 | |
| Replying to a telegram, confirming the decision to keep a car and wait until coachbuilder Hoopers has finished. | 15th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan027 | |
| Proposing modifications to lower the new 20HP chassis by altering the side channels. | 15th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan028 | |
| New India chassis frame, referencing schedule 2433 and an upcoming drawing for 'India 3. and 4'. | 16th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan029 | |
| Outlining steering modifications for the Phantom model, which includes a new design and requires a new steering box. | 16th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan030 | |
| Trial modifications for a 20HP starter pinion, outlining various schemes to be tested. | 16th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan031 | |
| Drawings for a new 20HP low-stress valve spring for experimental testing and standardization. | 20th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan032 | |
| Letter discussing a grouped arrangement for car clocks, proposing a new winding mechanism design involving bevel and spur gears. | 20th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan033 | |
| Policy on modifications for the Lightened Phantom with Turbulent Head. | 20th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan034 | |
| Introduction of a new type of petrol filter and the cancellation of the existing one. | 20th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan035 | |
| Proposed simpler scheme for centralised front axle lubrication. | 21th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan036 | |
| Carburetter air valve corrosion on a Phantom, comparing aluminium and brass options. | 22th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan037 | |
| Request for a triple diffuser Zenith carburetter to be sent for examination. | 22th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan038 | |
| Proposed improvements for the 20HP model, to be called INDIA.3. | 22th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan039 | |
| The selection and positioning of a hand-operated pump for the centralised chassis lubrication system. | 23th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan040 | |
| Difficulties with a Phantom wheel carrier and requesting details on a fracture. | 23th Jul 1927 | West Wittering \ Q \ July1927-September1927 Scan041 | |
| Options for instrument dials, including porcelain vs. silvered faces and a review of the A.T. speedometer. | 8th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan042 | |
| Design and material choice for instrument dials, specifically comparing porcelain and silvered faces. | 8th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan043 | |
| Steering and brake mechanism issues on the Springfield Chassis. | 8th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan044 | |
| Brake noise, cancelling the governor, and preventing banging in the exhaust. | 8th Feb 1940 | West Wittering \ Q \ July1927-September1927 Scan045 | |
| Design of the Phantom luggage grid, comparing forged side members to the tubular type. | 11th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan046 | |
| Internal memorandum discussing the layout and approval of grouped instruments on a car's instrument board. | 11th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan047 | |
| Modifications to the Phantom's rear spring centre fulcrum for the centralised chassis lubrication system. | 11th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan048 | |
| Design and sourcing of framed instrument panels for show cars and customers. | 13th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan049 | |
| Description of specifications for experimental designs India 3, India 4, EAC.10, and EAC.12. | 13th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan050 | |
| Suggestion to simplify windscreen design due to the universal use of screen wipers. | 13th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan051 | |
| Adapting the centralised chassis lubrication for various components to the Bijur system. | 13th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan052 | |
| Design, fitting, and commercial strategy for framed, grouped instrument panels. | 13th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan053 | |
| Requesting updated detail drawings for a Blue Sports Chassis due to discrepancies in received blueprints for the cylinder head and piston. | 17th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan054 | |
| Unapproved design for the 20HP timing gear's moveable idler wheel. | 17th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan055 | |
| Scheme to address friction and joggling in the steering column. | 17th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan056 | |
| Modifications to the centralised chassis lubrication for the Bijur system. | 17th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan057 | |
| Practicalities and aesthetics of supplying a luggage grid versus a complete rear wheel carrier for the Phantom model. | 17th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan058 | |
| Correspondence regarding the design and approval of grouped vehicle instruments and dials. | 17th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan059 | |
| Feedback and suggested modifications for the 10-EX Blue Sports Car. | 18th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan060 | |
| The problem of efficiently hanging and silencing rattling cabriolet doors. | 18th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan061 | |
| Proposed method for centralised chassis lubrication on the Phantom model. | 19th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan062 | |
| Suitability of speed indicators and the preferred style for instrument dials. | 19th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan063 | |
| Evaluation and potential adoption of new, higher-quality dashboard clocks. | 19th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan064 | |
| Disagreeing with the removal of tiebars from the 10-EX model, demanding they be replaced for structural integrity. | 20th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan065 | |
| Experiments and modifications to the Phantom combined spare wheel carrier and luggage grid. | 20th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan066 | |
| Framed instrument patch and a Watford clock for use in show cars. | 20th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan067 | |
| Centralised lubrication system and a new bridge for the servo gear. | 23th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan068 | |
| Alterations to the Phantom and India speedometer drives to accommodate windscreen wipers. | 23th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan069 | |
| Experimental induction pipe for the Phantom engine, intended for testing on the blue sports chassis. | 24th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan070 | |
| Proposed lubrication scheme for the Phantom's centralised chassis. | 24th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan071 | |
| Supply and fitting of framed instruments for Show Cars, including necessary dashboard modifications. | 24th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan072 | |
| Modified duralumin push rod for the Phantom valve gear. | 24th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan073 | |
| Design of framed instruments, including the Watford clock, dial branding, and finish of the instrument casting. | 25th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan074 | |
| Centralised chassis lubrication for the Phantom model, suggesting modifying a cross member flange. | 26th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan075 | |
| Dispatch of drawings for centralised chassis lubrication on the Phantom chassis. | 27th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan076 | |
| Suggesting a simple alteration for the centralised chassis lubrication of the torque tube bearing. | 27th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan077 | |
| Modifications required for a larger 20HP crankshaft. | 27th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan078 | |
| Battery ignition points, advocating for the use of tungsten over platinum and comparing different manufacturers. | 29th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan079 | |
| Letter discussing modifications to lighten and simplify the Phantom engine for sports applications, including changes to the crankshaft. | 29th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan080 | |
| Steering box experiments and the properties of various lubricating oils. | 29th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan081 | |
| Modifications for the Phantom centralised chassis lubrication system. | 30th Jun 1927 | West Wittering \ Q \ July1927-September1927 Scan082 | |
| Scheme 2456 for centralised chassis lubrication of the hand brake differential. | 31th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan083 | |
| Sending drawings for the Phantom Sports Engine, detailing crankcase, cylinder blocks, and valve gear. | 31th Aug 1927 | West Wittering \ Q \ July1927-September1927 Scan084 | |
| | | | |
