| Description | Date | Identifier | |
| Drawing of a Chrysler rubber engine mounting system, showing rear feet and front anchorage. | 15th Jun 1929 | West Wittering \ T \ 2January1929-June1929 Scan265 | |
| Graph of Chrysler valve lift curves for the exhaust and inlet valves, plotted against crankshaft degrees. | 5th Jun 1928 | West Wittering \ T \ 2January1929-June1929 Scan266 | |
| Sketch for a proposed sheet metal bracket to support an exhaust system silencer. | 3rd Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan001 | |
| Complaints of excessive wheel arch clearance on the 20HP model and requesting tests on suggested new clearances. | 3rd Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan002 | |
| The approved colour scheme for a Barkerlite Coupe Limousine and arranging for the bonnet to be sent for painting. | 3rd Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan003 | |
| Modification of intermediate and rear step-irons, specifically requesting a length increase for 20HP pressings. | 1st Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan004 | |
| The centralised chassis lubrication system for Phantom and India models. | 7th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan005 | |
| Providing feedback and criticism on a car's performance, covering the engine, seats, and handling. | 9th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan006 | |
| Agreeing to revert to a solid lug design for the 'India 3' cast dashboard. | 11th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan007 | |
| Dashboard pump position for the centralised chassis lubrication system on 'India 3' models. | 11th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan008 | |
| Necessity of fitting low pressure tyres to the 20HP model to remain competitive. | 12th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan009 | |
| Design change from a three to a two bolter flange for the India 3 cylinder block water pipe connection. | 13th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan010 | |
| Querying discrepancies in diagrams related to hydraulic shock dampers and pressure theories. | 13th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan011 | |
| Directive to halt work on 'B' steering for the Phantom G.2.B series and to reduce overall car height. | 13th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan012 | |
| Modifications to be made to a cast dashboard for an 'India 3' car, model 12.G.4. | 13th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan013 | |
| Drawing for an induction pipe for India 3, to be adapted for vertical type carburettors. | 14th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan014 | |
| Alternative arrangements for the 'SS' rear shock damper and related modifications. | 14th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan015 | |
| Main switch for the EAC.10 Sequence Starter and initial production methods. | 14th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan016 | |
| Strengthening the 20HP piston and a specific taller version required for 'India 3'. | 14th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan017 | |
| Telegram discussing the replacement and strengthening of Phantom pistons due to potential breakage. | 16th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan018 | |
| Post Office Telegram from Royce regarding an issue with the alloy for rings. | 16th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan019 | |
| Requirements for fitting a Stephan Grebel spot light, a smaller headlamp, and Chrysler type wing lamps to a vehicle. | 16th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan020 | |
| Connection points and visual representations on a Phantom wiring diagram for a green light. | 16th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan021 | |
| 20HP piston breakage and proposals for new piston ring designs. | 17th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan022 | |
| New schedules for the Phantom's centralised chassis lubrication system, specifically for a new pedal and distance pieces. | 17th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan023 | |
| Arrangement of headlamps, wiring, and switches for model 12.G.4 and India cars. | 17th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan024 | |
| Requesting a sketch of a part for a Hobson Petrol Gauge to be fitted to a new instrument patch. | 17th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan025 | |
| Modifications to the 'SS' battery suspension and its rear box. | 18th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan026 | |
| Design of 'SS' shock damper connecting rods, comparing solid versus tube construction. | 18th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan027 | |
| Lubrication method for the 'SS' rear damper connecting rod and the potential issue of intermingling oils. | 19th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan028 | |
| Decision not to take action on a fracture due to changes in the centralised chassis lubrication system. | 19th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan029 | |
| Responding to a query about a universal joint, detailing omissions and proposed changes to its rings and threads. | 19th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan030 | |
| Proposing changes to the scuttle isolation for the Phantom G.2.B. series vehicle. | 19th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan031 | |
| The riding qualities of Phantom and 20Hp cars, focusing on tyres and road springs. | 20th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan032 | |
| Adjustments to shock dampers and springs to improve ride quality and address complaints. | 20th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan033 | |
| The design and development of experimental pistons for 20HP and Phantom engines, focusing on new features to reduce knocking and oil consumption. | 20th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan034 | |
| Scuttle isolation for chassis 12.G.4, enclosing a marked-up blueprint and suggesting modifications. | 20th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan035 | |
| Wiring scheme for an accumulator switch and green light indicator, and the design of a delicate field fuse. | 20th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan036 | |
| Corrections to a diagram for an accumulator switch and green light scheme, and issues with a delicate field fuse. | 20th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan037 | |
| New scheme for the Phantom's centralised chassis lubrication system to address filter choking. | 21th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan038 | |
| Scheme 2660 for scuttle isolation on the 'India 3' model and requesting a dashboard alteration. | 21th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan039 | |
| Confirmation of a telegram requesting an urgent order for wheels, tyres, and rims. | 23th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan040 | |
| Modifications to Phantom piston rings to increase cylinder wall pressure. | 23th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan041 | |
| Report outlining potential improvements to vehicle riding qualities, focusing on tyres, springs, and shock dampers. | 23th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan042 | |
| Design, testing, and grinding instructions for a Pedestal Piston for India 3. | 24th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan043 | |
| Lubrication of the 'SS' axle control ball end and its potential application to the Phantom model. | 25th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan044 | |
| Clarifying design alterations to the 20HP carburetter. | 25th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan045 | |
| Increasing the width of cams for the valve gear. | 25th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan046 | |
| Modifications and protection options for the sequence starter main switch. | 25th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan047 | |
| Modifications and protection options for the sequence starter main switch contacts. | 25th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan048 | |
| Modifications to a distribution board fitted with a green lamp switch, focusing on its dimensions, materials, and component placement. | 26th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan049 | |
| Scheme 2665, detailing a solid cast lug to replace experimental sheet metal brackets at the bottom of the India 3 cast dash. | 26th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan050 | |
| Halting investigation on hydraulic shock dampers as they are functioning satisfactorily. | 26th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan051 | |
| Modifications to a distribution board fitted with a green lamp switch. | 26th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan052 | |
| The artistic and manufacturing quality of radiator mascots and filler caps for the Phantom and 20HP models, with proposed modifications. | 27th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan053 | |
| Correspondence regarding a drawing for exhaust pipes for the Indian market, designed to avoid compound bends. | 28th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan054 | |
| Secret memo detailing modifications to the 'SS' brake differentials and associated components. | 28th Jul 1928 | West Wittering \ T \ 2July1928-December1928 Scan055 | |
| Inquiry about the performance of a Zenith 60.DJ double carburetter for a 500HP engine. | 14th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan056 | |
| Paint and fabric mismatch on Coupe Limousine X5830 / X5260. | 14th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan057 | |
| Reduction of wheel arch height on a 20HP car. | 14th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan058 | |
| Various properties and manufacturing considerations for road springs, comparing different types. | 14th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan059 | |
| Expressing satisfaction with the performance of the modified new contact maker LeC. 2460. | 20th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan060 | |
| Suggesting that the project for altered cylinder construction be shelved due to its complexity. | 20th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan061 | |
| Performance and design of piston rings, comparing 'perfect circle' and 'L' shaped rings. | 20th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan062 | |
| Mr. Hall's light alloy, discussing casting difficulties and high-temperature performance. | 20th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan063 | |
| Issues with finishing a scuttle with cellulose paint and proposing alternative body mounting schemes. | 20th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan064 | |
| Performance assessment report on a vehicle, detailing issues and recommendations for various components. | 20th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan065 | |
| Typed evaluation report on various vehicle components and design features. | 22th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan066 | |
| Painting error on a limousine for Mr. Royce and issues with coachbuilding supervision. | 22th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan067 | |
| Division of responsibility for vehicle body design and construction between W.W. and Derby. | 22th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan068 | |
| Improving the accessibility of the Phantom's rear wheel carrier fixing bolt, with a design suggestion from Mr. Royce. | 22th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan069 | |
| Weight of a Coupe Limousine body and the added weight from various chassis modifications. | 22th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan070 | |
| Omission of tie-bars from the India 3 model frame, referencing experiments on the 'Twenty' model. | 22th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan071 | |
| Stock of 40/50 rear road springs and the plan to send a revised pad. | 24th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan072 | |
| Steering 'shiver' issues and proposed modifications for a new front axle for the India 3 model. | 24th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan073 | |
| Poor slow-running performance of the 20HP engine and suggesting a test with a Zenith carburettor. | 24th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan074 | |
| Trouble with and revised designs for the mixture adjustment on the 20HP and Phantom models. | 24th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan075 | |
| Proposing a change to the brake countershaft cantilever bearing on the gearbox, switching to forgings for cost reduction. | 28th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan076 | |
| Design and cancellation of different types of 'S.S.' pedals. | 28th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan077 | |
| Suggestion to change the manufacturing process for Super Sports Engine timing gears. | 28th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan078 | |
| Parts availability, body style proposals, and specific radiator and dash design considerations. | 28th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan079 | |
| Features of driving seat positions for 'C', 'D', and 'E' type steering on the 'S.S' model. | 28th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan080 | |
| Design changes and alternative schemes for the 'SS' radiator and cross member suspension. | 29th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan081 | |
| Instructions for altering EAC.10 engine timing with two new camshaft options and diagrams. | 30th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan082 | |
| New, larger diameter steering wheel schemes for various models. | 30th Aug 1928 | West Wittering \ T \ 2July1928-December1928 Scan083 | |
| Agreeing to a suggested alteration for the Phantom Green Light Scheme, requesting a new wiring diagram. | 1st Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan084 | |
| Different methods of headlamp dipping, specifically comparing a three-lamp system with bifocal dipping using a two-filament bulb. | 1st Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan085 | |
| 'SS' starting handle gear, referencing schedule 2684 and proposing a simpler spring arrangement. | 5th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan086 | |
| Wheel and tyre specifications for a new 'SS' model to lower its frame height for French conditions. | 6th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan087 | |
| Discrepancy in 40/50 suspension test results related to shock dampers and tyre pressures. | 9th Oct 1928 | West Wittering \ T \ 2July1928-December1928 Scan088 | |
| Design and production of bodies and subframes for two EAC.10 cars. | 10th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan089 | |
| Technical note regarding the insulation and wiring for a green light magnet. | 11th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan090 | |
| Drawing and the production of models for Square Collar Nuts. | 12th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan091 | |
| Scheme 2697 for the 'SS' Front Dumb Iron and Front Horn. | 12th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan092 | |
| Scheme 2696 for passing the starting handle shaft through the 'SS' radiator. | 12th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan093 | |
| Arrangement and construction of the 'SS' front rubber buffer, referencing various N. schemes. | 12th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan094 | |
| Modifications to the operating gear for the 'SS' exhaust cutout. | 12th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan095 | |
| Alterations to the induction pipes and cylinder head for exhaust or water heating. | 12th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan096 | |
| Dispatch of design schemes for the 'SS' Frame, including cross members and general arrangement. | 13th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan097 | |
| Altering the drilling on the 'X' shaped cross member for a revised silencer support. | 13th Sep 1928 | West Wittering \ T \ 2July1928-December1928 Scan098 | |
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