| Description | Date | Identifier | |
| Arranging the return of chassis 98 N.K. to Derby for examination. | 8th Aug 1924 | Box 69 \ 2 scan0125 | |
| Creation of a mock-up for the bonnet and dash of the E.A.C.II model. | 8th Aug 1924 | Box 69 \ 2 scan0126 | |
| Secret memo from 'R' about preparing an EAC.2 chassis with four-wheel brakes for sales approval. | 1st Aug 1924 | Box 69 \ 2 scan0127 | |
| Outlining technical questions and proposals for the production of 100 sets of Eastern Armoured Cars. | 14th Aug 1924 | Box 69 \ 2 scan0128 | |
| List of queries and instructions regarding various engine component sections. | 14th Aug 1924 | Box 69 \ 2 scan0129 | |
| List of queries and status updates regarding various engine components and assemblies. | 14th Aug 1924 | Box 69 \ 2 scan0130 | |
| Status report on various vehicle component sections, including wire fittings, fan, exhaust, and controls. | 9th Aug 1924 | Box 69 \ 2 scan0131 | |
| Modifications to an EAC.11 car and the progress on a new EAC.111 chassis. | 9th Aug 1924 | Box 69 \ 2 scan0132 | |
| The secrecy surrounding an E.A.C.II car with non-standard fittings. | 20th Aug 1924 | Box 69 \ 2 scan0133 | |
| Provision and use of a rubber stamp for 'Eastern Armoured Cars' correspondence. | 20th Aug 1924 | Box 69 \ 2 scan0134 | |
| Table of figures for automatic ignition advance for the MAG.2 engine at various speeds. | 21th Aug 1924 | Box 69 \ 2 scan0135 | |
| Instructions for 100 sets for Eastern Armoured Cars. | 22th Aug 1924 | Box 69 \ 2 scan0136 | |
| Outlining the strict secrecy protocol for the key to the bonnet of Car No. 93NK. | 23th Aug 1924 | Box 69 \ 2 scan0137 | |
| Signed undertaking outlining the strict confidentiality and handling procedures for a specific car and its bonnet key. | 28th Aug 1924 | Box 69 \ 2 scan0138 | |
| Specification and price for a new EAC.2 chassis for Mr. Royce's personal use. | 29th Aug 1924 | Box 69 \ 2 scan0139 | |
| Undertaking regarding the secrecy of a specific car's bonnet key and daily reporting procedures. | 5th Sep 1924 | Box 69 \ 2 scan0140 | |
| Responding to criticism about waste, detailing tests on cars with 4-wheel brakes and stronger springs. | 9th Sep 1924 | Box 69 \ 2 scan0141 | |
| The compromise between stronger springs for speed models and flexible springs for comfort. | 1st Sep 1924 | Box 69 \ 2 scan0142 | |
| Proposal to send a mechanic to investigate and cure a brake thumping complaint on a specific car. | 12th Sep 1924 | Box 69 \ 2 scan0143 | |
| Secret memo requesting two up-to-date EAC cars, one with an open body and one with a closed body, for production evaluation. | 17th Sep 1924 | Box 69 \ 2 scan0144 | |
| Qualities of car Hs2/LG3.9.24 and a request to reserve it for testing and demonstration. | 18th Sep 1924 | Box 69 \ 2 scan0145 | |
| Secret memorandum concerning the availability of up-to-date E.A.C. engine cars for trial. | 18th Sep 1924 | Box 69 \ 2 scan0146 | |
| Readiness and dispatch options for a dummy chassis required for EAC 11 bodies. | 22th Sep 1924 | Box 69 \ 2 scan0147 | |
| Secret memo discussing delays with the E.A.C.11 dummy chassis due to the bonnet and radiator, proposing solutions. | 22th Sep 1924 | Box 69 \ 2 scan0148 | |
| Instructing that parts for six E.A.C.II chassis are to be made in parallel for demonstration cars. | 23th Sep 1924 | Box 69 \ 2 scan0149 | |
| Secret memo regarding the dispatch of a dummy chassis mock-up to Barkers for body and wing construction. | 25th Sep 1924 | Box 69 \ 2 scan0150 | |
| The slow running performance of the E.A.C. engine. | 26th Sep 1924 | Box 69 \ 2 scan0151 | |
| The dispatch schedule for a dummy chassis and its components to Messrs. Barkers. | 30th Sep 1924 | Box 69 \ 2 scan0152 | |
| Urgent inquiry regarding car modifications to improve performance and fix a 'booming' fault. | 30th Sep 1924 | Box 69 \ 2 scan0153 | |
| Secret memo regarding the development of the EAC.11 model and concerns about information leaks. | 1st Oct 1924 | Box 69 \ 2 scan0154 | |
| Secret memo instructing not to run the E.A.C.II chassis from the Experimental Shop without written authority. | 1st Oct 1924 | Box 69 \ 2 scan0155 | |
| Secret memo regarding the control, secrecy, and release of the EAC.II chassis. | 30th Sep 1924 | Box 69 \ 2 scan0156 | |
| Telegram from Eversden to Hives at Roycar, Derby, enquiring when a knock-up will be at Barkers coachbuilders. | 1st Nov 1922 | Box 69 \ 2 scan0157 | |
| Slow running of the EAC.11 engine and a proposed modification to the carburettor controls. | 10th Jun 1924 | Box 69 \ 2 scan0158 | |
| Extreme secrecy and handling procedures for the key to the bonnet of car No. 46PK. | 11th Oct 1924 | Box 69 \ 2 scan0159 | |
| Proposing a test of a fabric coupling on an EAC.11 car to reduce noise and recommending a sub-frame for covered bodies. | 13th Oct 1924 | Box 69 \ 2 scan0160 | |
| Page discussing body noises, vibrations, and recommendations for sub-frame mounting and camshaft experiments. | 13th Oct 1924 | Box 69 \ 2 scan0161 | |
| Secret memo discussing logistics for fitting a radiator and bonnet to a new chassis, model EAC.11, to avoid suspicion. | 13th Oct 1924 | Box 69 \ 2 scan0162 | |
| Secret memo confirming permission for a car with an E.A.C.2 engine to be taken to Mr. Royce. | 16th Oct 1924 | Box 69 \ 2 scan0163 | |
| Carburetter experiments and performance issues on the EAC.2 chassis and Goshawk engine. | 16th Oct 1924 | Box 69 \ 2 scan0164 | |
| Secret memo about fitting an EAC.11 engine to a 40/50 HP car for preliminary road tests under instructions of secrecy. | 17th Oct 1924 | Box 69 \ 2 scan0165 | |
| Secret memo regarding preliminary road tests for a 40/50 HP car fitted with an EAC.11 engine. | 17th Oct 1924 | Box 69 \ 2 scan0166 | |
| Secret memo arranging a meeting to discuss tests for the EAC.11 vehicle and its external appearance. | 8th Oct 1924 | Box 69 \ 2 scan0167 | |
| Secret memo discussing plans to test a modified chassis using an adapted old body, possibly in Spain. | 16th Oct 1924 | Box 69 \ 2 scan0168 | |
| Conference about misunderstandings between departments regarding chassis alterations. | 22th Oct 1924 | Box 69 \ 2 scan0169 | |
| Secret internal memo discussing chassis production, testing challenges, and delivery schedules. | 22th Oct 1924 | Box 69 \ 2 scan0170 | |
| Secret memo urging caution regarding alterations to new chassis designs based on 20 years of company experience. | 22th Oct 1924 | Box 69 \ 2 scan0171 | |
| Request from CJ to Hs for a modified EAC.II engine to be submitted for testing once a list of specific alterations has been completed. | 1st Oct 1924 | Box 69 \ 2 scan0172 | |
| Secret memo detailing the test results and issues found with an EAC.11 engine. | 24th Oct 1924 | Box 69 \ 2 scan0173 | |
| Note about the magneto on the 40/50 HP model, in relation to a new brake system modification. | 25th Oct 1924 | Box 69 \ 2 scan0174 | |
| Undertaking and set of instructions regarding the strict secrecy and handling of a key for a specific vehicle. | 25th Oct 1924 | Box 69 \ 2 scan0175 | |
| Seeking opinions on the delivery schedule for EAC.II chassis and a potential further order of standard chassis. | 27th Oct 1924 | Box 69 \ 2 scan0176 | |
| Modifications to car 93-NK, incorporating EAC.11 components at the request of the Sales department. | 27th Oct 1924 | Box 69 \ 2 scan0177 | |
| Performance expectations and approval process for production car EAC.11. | 27th Oct 1924 | Box 69 \ 2 scan0178 | |
| Secret internal memo discussing the production schedule, alterations, and risks associated with the new E.A.C.2 model's 10,000 miles trial. | 27th Oct 1924 | Box 69 \ 2 scan0179 | |
| Chassis production continuity and the ordering of materials. | 27th Oct 1924 | Box 69 \ 2 scan0180 | |
| Requested modifications to convert car 93-NK into a modern EAC.11. | 27th Oct 1924 | Box 69 \ 2 scan0181 | |
| Secret memo detailing the modernization of car 93-NK into an EAC.11 specification. | 27th Oct 1924 | Box 69 \ 2 scan0182 | |
| Secret internal memo responding to a query and providing updates on four outstanding E.A.C.II. points. | 27th Oct 1924 | Box 69 \ 2 scan0183 | |
| Chassis body type, camshaft suitability for a Sports Model vs a Covered Car, and gear ratios. | 28th Oct 1924 | Box 69 \ 2 scan0184 | |
| Secret internal memorandum discussing car bodies, camshafts, and gear ratios for various models. | 29th Oct 1924 | Box 69 \ 2 scan0185 | |
| Risks and timelines for manufacturing two new chassis. | 29th Oct 1924 | Box 69 \ 2 scan0186 | |
| Development, testing, and delivery schedules for the E.A.C.2 chassis and 93.NK car. | 1st Oct 1924 | Box 69 \ 2 scan0187 | |
| Preparation of car 93-NK for criticism by comparing it to a standard 40/50 HP model. | 29th Oct 1924 | Box 69 \ 2 scan0188 | |
| Secret internal request for a recommendation on making the accelerator throttle opening more gradual for implementation on the 93-NK car. | 29th Oct 1924 | Box 69 \ 2 scan0189 | |
| Component updates and decisions for the 93-NK car model. | 31th Oct 1924 | Box 69 \ 2 scan0190 | |
| Testing protocol and anticipated issues for the EAC.11 and 93-NK cars. | 4th Jul 1924 | Box 69 \ 2 scan0191 | |
| Comparing vibrations between car models 93-NK and 46-PK, noting different parts fitted. | 4th Jul 1924 | Box 69 \ 2 scan0192 | |
| Explaining the reason for fitting high compression pistons to car 93-NK. | 1st Nov 1924 | Box 69 \ 2 scan0193 | |
| Secret internal memo discussing the unacceptable roughness of car 48-PK and the importance of maintaining 'silkiness' in standard chassis. | 1st Nov 1924 | Box 69 \ 2 scan0194 | |
| Secret memo discussing engine vibration issues in car models 46-PK and the new EAC.II engine. | 1st Nov 1924 | Box 69 \ 2 scan0195 | |
| Secret memo discussing engine vibrations and policy changes for the EAC.11 car, comparing it to the 46-PK and 40/50 HP models. | 4th Nov 1924 | Box 69 \ 2 scan0196 | |
| Secret memo regarding the fitting of a radiator, lamps, and other parts to car EAC.11. | 5th Nov 1924 | Box 69 \ 2 scan0197 | |
| Proposing a visit to Derby to test important chassis waiting to be passed. | 6th Nov 1924 | Box 69 \ 2 scan0198 | |
| Secret memo discussing car arrangements for Mr. Royce, including the use of a Beatonson all-weather and a new experimental EAC.2 chassis. | 7th Nov 1924 | Box 69 \ 2 scan0199 | |
| Undertaking outlining the strict confidentiality protocols for handling the key to a specific car's bonnet. | 8th Nov 1924 | Box 69 \ 2 scan0200 | |
| List of modifications required to fit an EAC.2 engine into an existing 40/50 chassis. | 10th Nov 1924 | Box 69 \ 2 scan0201 | |
| Secret memo from Hs to Wor detailing issues with the 93-NK car, including vibrations, and plans for demonstration before sending to sales. | 10th Nov 1924 | Box 69 \ 2 scan0202 | |
| Telegram regarding the delayed return of car 48-PK and making arrangements for its use. | 24th Nov 1933 | Box 69 \ 2 scan0203 | |
| Improvements and comparative testing of the EAC.11 engine against the standard 40/50 HP model. | 11th Nov 1924 | Box 69 \ 2 scan0204 | |
| Secret memo discussing the improved EAC.11 engine's performance compared to the standard 40/50 HP and arranging further tests. | 11th Nov 1924 | Box 69 \ 2 scan0205 | |
| Proposed chassis modifications to accommodate the EAC.II engine. | 11th Nov 1924 | Box 69 \ 2 scan0206 | |
| Typed memo requesting to borrow the 48-PK car for a meeting and outlining the arrangements. | 11th Nov 1924 | Box 69 \ 2 scan0207 | |
| The EAC.11 (93-NK) car, discussing its modern parts and a change in policy from a speed model to a town-carriage. | 11th Nov 1924 | Box 69 \ 2 scan0208 | |
| The use of the 48-PK car. | 12th Nov 1924 | Box 69 \ 2 scan0209 | |
| Secret memo discussing the EAC.11 gearbox, its differences to the standard EAC.111, and its use in an experimental car. | 12th Nov 1924 | Box 69 \ 2 scan0210 | |
| Modifications required to fit the EAC.11 engine into a present chassis. | 13th Nov 1924 | Box 69 \ 2 scan0211 | |
| Chassis and engine compatibility, detailing proposed modifications and production choices for various vehicle series. | 11th Dec 1924 | Box 69 \ 2 scan0212 | |
| Feedback from the Sales Department on a car with a modified axle and ignition system. | 11th Dec 1924 | Box 69 \ 2 scan0213 | |
| Secret memo discussing which car model to adopt, considering modifications to the 'V' series chassis and bodywork. | 15th Nov 1924 | Box 69 \ 2 scan0214 | |
| Issues and repair plans for car 8-G-11 for Le Canadel. | 18th Nov 1924 | Box 69 \ 2 scan0215 | |
| Modifications to the 93-NK car to serve as a model for the EAC.11 chassis. | 18th Nov 1924 | Box 69 \ 2 scan0216 | |
| Secret memo discussing the arrangement and transport of a dummy chassis and the unsuitability of a 'live' chassis for experimental work. | 19th Nov 1924 | Box 69 \ 2 scan0217 | |
| Clarifying production instructions and material quantities for the 'V' and 'W' Series chassis. | 21th Nov 1924 | Box 69 \ 2 scan0218 | |
| Outlining proposals for the 'V' and 'W' Series chassis and body components following a conference. | 21th Nov 1924 | Box 69 \ 2 scan0219 | |
| Specifications for 'V' and 'W' Series components including the radiator, engine, and exhaust systems. | 21th Nov 1924 | Box 69 \ 2 scan0220 | |
| Specifications for exhaust, ignition, carburetter, clutch, and gearbox components for various vehicle series. | 21th Nov 1924 | Box 69 \ 2 scan0221 | |
| Specifications for frames, axles, and brake operation for V and W Series vehicles. | 21th Nov 1924 | Box 69 \ 2 scan0222 | |
| Specifications for various components for V and W series vehicles, including steering, starter, and fuel systems. | 21th Nov 1924 | Box 69 \ 2 scan0223 | |
| Technical note discussing the petrol tank design and an agreement to modify the timing gear oil pump. | 21th Nov 1924 | Box 69 \ 2 scan0224 | |
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