| Description | Date | Identifier | |
| Inspection report detailing wear on bushes for a joint fork, cross pin, and the condition of a spherical component. | 25th Sep 1924 | Box 72 \ 4 scan0221 | |
| Inspection report detailing wear and dimensions of front axle pivot pins and bushes. | 25th Sep 1924 | Box 72 \ 4 scan0222 | |
| Wear measurements of brake drums, shoes, and rear axle components. | 25th Sep 1924 | Box 72 \ 4 scan0223 | |
| Record of engine maintenance and parts replacement for Chassis 9 PK. | 25th Sep 1924 | Box 72 \ 4 scan0224 | |
| List of modifications and parts fitted to various vehicle systems, page 2. | 25th Sep 1924 | Box 72 \ 4 scan0225 | |
| List of modifications and parts fitted to various vehicle systems, including dampers, suspension, steering, and pedals. | 25th Sep 1924 | Box 72 \ 4 scan0226 | |
| List of modifications and new parts fitted to various vehicle components, including wiring, steering, axles, brakes, and gearbox. | 26th Sep 1924 | Box 72 \ 4 scan0227 | |
| The slow running performance of the E.A.C. engine. | 26th Sep 1924 | Box 72 \ 4 scan0228 | |
| Investigation and repair of a 'booming fault' and axle/spring changes for car 59-PK. | 1st Oct 1924 | Box 72 \ 4 scan0229 | |
| Moving car 48-PK for spring approval and listing required coachwork repairs. | 24th Oct 1924 | Box 72 \ 4 scan0230 | |
| The urgent conversion of chassis 17-TM for The Prince of Wales, detailing the fitting of front wheel brakes and other special parts. | 6th Oct 1924 | Box 72 \ 4 scan0231 | |
| Secret memo regarding a visit to W.W. detailing cars and components to be brought for testing. | 17th Oct 1924 | Box 72 \ 4 scan0232 | |
| Performance and issues of an 11-AU Open Touring 40/50 HP after a test drive. | 18th Oct 1924 | Box 72 \ 4 scan0233 | |
| The 11-AU Open Touring 40/50 HP model fitted with F.W.B's. | 20th Oct 1924 | Box 72 \ 4 scan0234 | |
| Noise complaints about a 40/50 HP Open Touring car, registration 11-AU. | 20th Oct 1924 | Box 72 \ 4 scan0235 | |
| Testing of a new exhaust system and an objectionable noise from the exhaust cut-out. | 20th Oct 1924 | Box 72 \ 4 scan0236 | |
| Test drive feedback on an Open Touring 40/50 HP car, focusing on engine and exhaust noises. | 20th Oct 1924 | Box 72 \ 4 scan0237 | |
| Trial and noise issues of a new exhaust system and its cut-out feature on different car models. | 20th Oct 1924 | Box 72 \ 4 scan0238 | |
| Performance, engine noise and exhaust issues of the 11-AU Open Touring car after a road test. | 18th Oct 1924 | Box 72 \ 4 scan0239 | |
| Why car 48-PK is not considered a fair representative of a standard 40/50 car due to its roughness. | 3rd Nov 1924 | Box 72 \ 4 scan0240 | |
| Confirmation of a telegram concerning the availability of car 48-PK and the return of personnel. | 11th Nov 1924 | Box 72 \ 4 scan0241 | |
| Secret internal memo arranging the loan of a 48-PK car for use as a comparison model. | 11th Nov 1924 | Box 72 \ 4 scan0242 | |
| Secret memo from 'Hs' to 'BJ' requesting the use of the 48-PK car for a weekend. | 12th Nov 1924 | Box 72 \ 4 scan0243 | |
| The long-term testing of front wheel brakes on car 48-PK and arranging a replacement demonstration vehicle. | 13th Nov 1924 | Box 72 \ 4 scan0244 | |
| Test notes on brake issues for car 48-PK, detailing a serious 'jagger' from the servo gear and a tendency to pull. | 14th Nov 1924 | Box 72 \ 4 scan0245 | |
| 'servo jagger' fault on car 48-PK and arranging a demonstration in Derby. | 17th Nov 1924 | Box 72 \ 4 scan0246 | |
| Specifications for E.A.C. chassis, covering conversion chassis for 'U' and 'V' series, and an improved 'V' chassis. | 17th Nov 1924 | Box 72 \ 4 scan0247 | |
| Continued memorandum detailing specifications for 'W' series chassis. | 18th Nov 1924 | Box 72 \ 4 scan0248 | |
| The condition of car 98-NK after testing, detailing necessary overhauls and potential future use. | 18th Nov 1924 | Box 72 \ 4 scan0249 | |
| Covering letter for a list of tools and spares received with chassis number 9.PK. | 1st Dec 1924 | Box 72 \ 4 scan0250 | |
| List of spares and accessories received with a vehicle, including details on its condition, extras, and defects. | 22th Dec 1924 | Box 72 \ 4 scan0251 | |
| Delivery note for a chassis with a Barker landaulette body, which has a cracked windscreen. | 2nd Oct 1928 | Box 72 \ 4 scan0252 | |
| Advice note listing a 40/50 chassis with a Barker Cauntanble body and its complete inventory of parts. | 2nd Dec 1924 | Box 72 \ 4 scan0253 | |
| Unpleasant noise in car 12-AU (40/50 HP landaulet) and the strategy to investigate and resolve the issue. | 12th Dec 1924 | Box 72 \ 4 scan0254 | |
| Complaints and repairs for Chassis No. 17-TM, owned by the Prince of Wales. | 9th Dec 1924 | Box 72 \ 4 scan0255 | |
| Completing brake tests on car 48-PK and preparing it for immediate sale. | 9th Dec 1924 | Box 72 \ 4 scan0256 | |
| Chassis 17-TM (Prince of Wales) detailing issues with a flexible coupling, high-speed steering wobble, and engine performance tests. | 11th Dec 1924 | Box 72 \ 4 scan0257 | |
| Concluding that performance cannot be improved due to the car's heavy weight of 51 cwts. | 11th Dec 1924 | Box 72 \ 4 scan0258 | |
| Secret memorandum outlining the expected characteristics and features for the upcoming 'V' series car. | 12th Dec 1924 | Box 72 \ 4 scan0259 | |
| Returning reports on a car and requesting a summarized report on its failings and potential improvements from the Sales Dept. | 15th Dec 1924 | Box 72 \ 4 scan0260 | |
| Mileage and return of the 48-PK Car. | 15th Dec 1924 | Box 72 \ 4 scan0261 | |
| Seized slipper wheel on a 48-PK car, which resolved engine vibrations but left a transmission groan. | 16th Dec 1924 | Box 72 \ 4 scan0262 | |
| Test report on car number 48 P.K., detailing the performance of the front wheel brakes, engine, and transmission. | 16th Dec 1924 | Box 72 \ 4 scan0263 | |
| Vehicle condition report detailing required rectifications before the car is considered suitable for sale. | 18th Dec 1924 | Box 72 \ 4 scan0264 | |
| Condition of several experimental cars being transferred to the Sales department for sale. | 18th Dec 1924 | Box 72 \ 4 scan0265 | |
| Sale and modification of specific car chassis. | 1st Jan 1925 | Box 72 \ 4 scan0266 | |
| Report on the unusual growth of a transmission groan in a car. | 19th Dec 1924 | Box 72 \ 4 scan0267 | |
| Overhaul and sale of the 9-PK experimental car, recommending the body be scrapped. | 20th Dec 1924 | Box 72 \ 4 scan0268 | |
| Return of the 48-PK car to the Sales department. | 23th Dec 1924 | Box 72 \ 4 scan0269 | |
| Urgent request for the return of car 12-AU to London as its absence is holding up a potential sale. | 24th Dec 1924 | Box 72 \ 4 scan0270 | |
| Internal memorandum regarding cars in the Experimental Department. | 29th Dec 1924 | Box 72 \ 4 scan0271 | |
| Required modifications to car 48-PK before its sale, including instrument board changes and windscreen wiper removal. | 31th Dec 1924 | Box 72 \ 4 scan0272 | |
| Specification sheet for a 40/50 HP car, chassis 48-PK, with a Cabriolet Park Ward body and accessories. | 1st Jan 1925 | Box 72 \ 4 scan0273 | |
| Delay in car repairs pending permission from an insurance company. | 9th Jan 1925 | Box 72 \ 4 scan0274 | |
| Return of car 12-AU to the Sales department. | 1st Jan 1925 | Box 72 \ 4 scan0275 | |
| Performance and modifications of the 12-AU car after testing. | 13th Jan 1925 | Box 72 \ 4 scan0276 | |
| Confirming the delivery of the 12-AU car to Lillie Hall. | 14th Jan 1925 | Box 72 \ 4 scan0277 | |
| The return of car 12-AU, noting a cracked windscreen and missing tools from the kit. | 14th Jan 1925 | Box 72 \ 4 scan0278 | |
| Return of car 12-AU, detailing a cracked windscreen and missing tools. | 14th Jan 1925 | Box 72 \ 4 scan0279 | |
| Test report on Chassis No. 12-AU detailing vibrations, engine booms, and its proposed use as a demonstration car. | 16th Jan 1925 | Box 72 \ 4 scan0280 | |
| Removing the Lucas Head Lamps and clock from car No. 48-PK at the purchaser's request and offering the used parts for another experimental car. | 17th Jan 1925 | Box 72 \ 4 scan0281 | |
| Request for the return of headlamps and a clock from car 48-PK for use on experimental cars. | 19th Jan 1925 | Box 72 \ 4 scan0282 | |
| The first test bench and road run dates for the E.A.C. engine. | 9th Apr 1925 | Box 72 \ 4 scan0283 | |
| Permanently recording delivery dates and discussing potential new chassis modifications. | 20th Apr 1925 | Box 72 \ 4 scan0284 | |
| Secret internal memo from CJ to BJ discussing chassis development, timelines, and issues with the V, W, 20HP and 40/50 series. | 1st Apr 1925 | Box 72 \ 4 scan0285 | |
| Production delays, delivery schedules, and inter-departmental communication regarding engine and chassis development. | 7th May 1925 | Box 72 \ 4 scan0286 | |
| Letter requesting photographs of a Dummy 40/50 HP car with a Barker body for the forthcoming Olympia Show. | 7th May 1925 | Box 72 \ 4 scan0287 | |
| Photographs of a dummy car from various angles for an exhibition at Olympia. | 8th May 1925 | Box 72 \ 4 scan0288 | |
| Photographs of a 40/50 HP vehicle with a Barker open body. | 12th May 1925 | Box 72 \ 4 scan0289 | |
| Letter to coachbuilder Barker & Co. detailing issues and suggested improvements for a 9-PK Double Enclosed Limousine. | 5th Jun 1925 | Box 72 \ 4 scan0290 | |
| Car 9-PK, warning against its use as a demonstrator and requesting its return for body removal. | 1st Jun 1925 | Box 72 \ 4 scan0291 | |
| The 9-PK mock-up chassis, its subframe, and issues with its original gearbox. | 1st Jun 1925 | Box 72 \ 4 scan0292 | |
| Specification sheet for a sub-frame enclosed limousine on a 9PK chassis, detailing weights and components. | 8th Jun 1925 | Box 72 \ 4 scan0293 | |
| Car's first test run, detailing performance and issues with rattles, noise, weight, and suspension. | 8th Jun 1925 | Box 72 \ 4 scan0294 | |
| Testing of various body subframes on 40/50 and 20 HP chassis. | 10th Jun 1925 | Box 72 \ 4 scan0295 | |
| Progress on two EAC chassis with subframes and listing eight improvements over the standard 'V' series cars. | 10th Jun 1925 | Box 72 \ 4 scan0296 | |
| List of vehicle modifications and details concerning chassis testing for experimental cars 7-EX and 8-EX. | 10th Jun 1925 | Box 72 \ 4 scan0297 | |
| Letter regarding the unsuitability of two sports car bodies and a proposal to fit a different body to a dummy chassis. | 12th Jun 1925 | Box 72 \ 4 scan0298 | |
| Request to return a car chassis for car 9-PK to Hoopers, Kings Rd, Chelsea, after coachbuilder modifications are complete. | 12th Jun 1925 | Box 72 \ 4 scan0299 | |
| Arrangements for the Railway Co. to collect a dummy 40/50 chassis and despatch it to Messrs. Barkers. | 15th Jun 1925 | Box 72 \ 4 scan0300 | |
| The return of a dummy car with a sports body to coachbuilder Messrs. Barkers. | 15th Jun 1925 | Box 72 \ 4 scan0301 | |
| Telegram regarding a dummy sports car's radiator and dash. | 16th Jul 1925 | Box 72 \ 4 scan0302 | |
| Telegram received by telephone regarding a Ghent car's dummy W. Series radiators and dash. | 16th Jun 1925 | Box 72 \ 4 scan0303 | |
| Differences between a dummy chassis with a sports body and a 'W' series chassis. | 6th Jun 1925 | Box 72 \ 4 scan0304 | |
| The use of a dummy chassis with a sports body for a catalogue photograph and for demonstration purposes. | 17th Jun 1925 | Box 72 \ 4 scan0305 | |
| Telegram regarding the availability of nine R.K. parts and a request to bring a Lucas switch box. | 4th Dec 1925 | Box 72 \ 4 scan0306 | |
| From 'Hs' to 'DA/EV' requesting to collect a 9-PK car chassis for tests related to the Silver Ghost. | 12th Dec 1925 | Box 72 \ 4 scan0307 | |
| Confirmation of a wire message sent to Hives in Derby regarding the availability of 'Nine PK' and a request to bring a Lucas switchbox. | 14th Dec 1925 | Box 72 \ 4 scan0308 | |
| The delivery of car 9-PK, missing parts, and arranging a trial run with Hoopers. | 14th Dec 1925 | Box 72 \ 4 scan0309 | |
| Suggesting a new 9-PK Silver Ghost with a Hooper body be used as a transport car for testing its subframe and paintwork. | 21th Dec 1925 | Box 72 \ 4 scan0310 | |
| Handover of experimental car 9-PK to the Transport department in place of 10-AU. | 7th Jan 1926 | Box 72 \ 4 scan0311 | |
| Authorising the use of an experimental car, 9-PK, for special purposes, with conditions for its return and sale. | 15th Jan 1926 | Box 72 \ 4 scan0312 | |
| The handover of the 9-PK experimental car for testing by Sales critics and the return of the 10-AU car. | 16th Jan 1926 | Box 72 \ 4 scan0313 | |
| The handover of the 9-PK experimental car and a list of its non-standard parts. | 16th Jan 1926 | Box 72 \ 4 scan0314 | |
| The end of experimental work on car 5-EX, a Silver Ghost, and its transfer to the R.D. | 29th Dec 1926 | Box 72 \ 4 scan0315 | |
| The 9-FK experimental car, detailing the use and sale of other vehicles. | 15th Jan 1926 | Box 72 \ 4 scan0316 | |
| Secret memo reporting the first test bench run of an engine under light loads. | 21th Sep 1923 | Box 72 \ 4 scan0317 | |
| The best horsepower curve obtained from an E.A.C. engine with a 40/50 HP Carburetter. | 24th Sep 1923 | Box 72 \ 4 scan0318 | |
| On engine performance, including a power curve with a Claudel carburetter and a difficulty encountered with tappet adjustment. | 9th Sep 1923 | Box 72 \ 4 scan0319 | |
| Reliability and efficiency tests for the E.A.C.1 engine. | 9th Oct 1923 | Box 72 \ 4 scan0320 | |
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