| Description | Date | Identifier | |
| Request to supply a spare ignition distributor for car B-35-AE for Mr. E.R. Hall. | 18th May 1936 | Box 90a \ 4 Scan216 | |
| Letter to S. Smith & Sons Ltd. chasing the delivery date for a sump unit and a large dashboard gauge. | 19th May 1936 | Box 90a \ 4 Scan217 | |
| The accounting procedure for Mr. E.R. Hall's Le Mans Race entry. | 19th May 1936 | Box 90a \ 4 Scan218 | |
| Letter to E.R. Hall regarding a request to alter wiring and fit an additional horn to a car being prepared for Le Mans. | 19th May 1936 | Box 90a \ 4 Scan219 | |
| Letter from S. Smith & Sons regarding a design misunderstanding for an oil level gauge for E.R. Hall's Bentley. | 19th May 1936 | Box 90a \ 4 Scan220 | |
| Letter from S. Smith & Sons discussing an oil level gauge for E.R. Hall's Bentley. | 20th May 1936 | Box 90a \ 4 Scan221 | |
| Fitting two Bentley type petrol gauge tank units, with special bearings, to two specific cars. | 20th Jun 1936 | Box 90a \ 4 Scan222 | |
| Letter translating a communication about withdrawing a question regarding brake drum materials for the Le Mans 24-hour race. | 20th May 1936 | Box 90a \ 4 Scan223 | |
| 17-hour endurance test on a High Power Bentley for Le Mans. | 20th May 1936 | Box 90a \ 4 Scan224 | |
| Valve stretch and cylinder head pocketing measurements. | 20th May 1936 | Box 90a \ 4 Scan225 | |
| Modifications to valve and port sizes for testing and performance improvements. | 20th May 1938 | Box 90a \ 4 Scan226 | |
| Graph showing the results of exhaust valve clearance tests on a B.3 high power unit for Bentley. | 20th May 1936 | Box 90a \ 4 Scan227 | |
| The reverse of a document showing a 'Print Room' stamp from Derby. | 21th May 1936 | Box 90a \ 4 Scan228 | |
| Letter to S.U. Carburetter Co. Ltd. confirming a verbal request for a new sump automatic oil feed float chamber. | 21th May 1936 | Box 90a \ 4 Scan229 | |
| Valve and cylinder head specifications for the B-21 Le Mans Unit. | 21th May 1936 | Box 90a \ 4 Scan230 | |
| Letter from S. Smith & Sons regarding an oil gauge for Mr. E. R. Hall's car. | 22th May 1936 | Box 90a \ 4 Scan231 | |
| Requesting the removal and overhaul of a dynamo on car B-35-AE due to sticking brushes. | 21th May 1936 | Box 90a \ 4 Scan232 | |
| Modifications to a Le Mans racing engine, specifically the fitting of a large oil pump and disappointing test results from Brooklands. | 22th May 1936 | Box 90a \ 4 Scan233 | |
| Payment for goods and ordering parts for E.R. Hall's car's automatic oil feed system. | 22th May 1936 | Box 90a \ 4 Scan234 | |
| The preparation plan and status for a Le Mans race car. | 22th May 1936 | Box 90a \ 4 Scan235 | |
| Covering order for a special oil pressure gauge and petrol gauge for a Bentley. | 22th May 1936 | Box 90a \ 4 Scan236 | |
| Status report on the preparation of a Bentley car for the Le Mans race, detailing bodywork and chassis modifications. | 25th May 1936 | Box 90a \ 4 Scan237 | |
| Car preparations and modifications for racing, including engine and system updates. | 25th May 1936 | Box 90a \ 4 Scan238 | |
| Preparation of a practice car for the Le Mans race. | 25th May 1936 | Box 90a \ 4 Scan239 | |
| Letter from S. Smith & Sons confirming the dispatch of a special petrol gauge for a Le Mans Bentley car, detailing the operational capacity of the warning light. | 25th May 1936 | Box 90a \ 4 Scan240 | |
| Request to make a duplicate reserve oil tank for an E-35-AE, to be fitted with an oil level gauge. | 25th May 1936 | Box 90a \ 4 Scan241 | |
| Letter concerning an oil pump, a private car, the attitude of W.O.B., and the scrutineering of a Lagonda for Le Mans. | 25th May 1936 | Box 90a \ 4 Scan242 | |
| Letter to Ceandess Ltd. regarding the urgent modification of a filler cap. | 25th May 1936 | Box 90a \ 4 Scan243 | |
| Dispatch request for one petrol tank filler cap to be sent for modification. | 25th May 1936 | Box 90a \ 4 Scan244 | |
| Internal request to issue a covering order to Ceandess Ltd. for a filler cap for Mr. Hall's car. | 25th May 1936 | Box 90a \ 4 Scan245 | |
| Telegram received by telephone regarding the shipment of one set of paid hypoids via the ship Berengaria. | 25th May 1922 | Box 90a \ 4 Scan246 | |
| Price list for Bugatti Owners' Club regalia and merchandise. | 25th May 1936 | Box 90a \ 4 Scan247 | |
| Modifications for a 4 1/4 litre practice car for Le Mans for Mr. E.R. Hall. | 25th May 1936 | Box 90a \ 4 Scan248 | |
| The final modifications for the Le Mans practice car, including a damaged but usable cylinder head. | 26th May 1936 | Box 90a \ 4 Scan249 | |
| Fitting a straight-through exhaust system to a practice car for Le Mans. | 27th May 1936 | Box 90a \ 4 Scan250 | |
| The design and location of jack pads for a 10,000-mile car. | 27th May 1936 | Box 90a \ 4 Scan251 | |
| Testing of a Bentley B.56.BN, its mileage, and the need for an overhaul. | 27th May 1936 | Box 90a \ 4 Scan252 | |
| Request to issue a covering order to Messrs. Ceandess Ltd. for one Filler Cap P.779. | 28th May 1936 | Box 90a \ 4 Scan253 | |
| Letter to supplier Ceandess Ltd. requesting a filler cap for a spare oil tank for Mr. Hall's car. | 28th May 1936 | Box 90a \ 4 Scan254 | |
| The absence of ventilation on a sample steel body for car B-56-BN. | 29th May 1936 | Box 90a \ 4 Scan255 | |
| Covering letter for a rev counter calibration sent to E.R. Hall. | 29th May 1936 | Box 90a \ 4 Scan256 | |
| Letter chasing an overdue order for an oil sump feed float chamber from The S.U. Company Ltd. | 30th May 1936 | Box 90a \ 4 Scan257 | |
| Enquiry to 'The Motor' magazine about organizing a trip to the Le Mans 24 hours race. | 3rd Jun 1936 | Box 90a \ 4 Scan258 | |
| The dispatch of specially prepared Bentley brake shoes for E.R. Hall's Le Mans race car. | 3rd Jun 1936 | Box 90a \ 4 Scan259 | |
| Correspondence to Don Carlos de Salamanca regarding accommodation arrangements for the Le Mans race. | 4th Jun 1936 | Box 90a \ 4 Scan260 | |
| Letter to C.C. Wakefield & Co. Ltd. regarding the use of their oil in a Bentley at Le Mans and hospitality arrangements. | 4th Jun 1936 | Box 90a \ 4 Scan261 | |
| Inquiry to a travel agent regarding a trip to the Le Mans Race. | 6th Jun 1936 | Box 90a \ 4 Scan262 | |
| Letter to R. Summers discussing travel arrangements to Le Mans for a Bentley practice session. | 6th Jun 1936 | Box 90a \ 4 Scan263 | |
| Letter discussing travel arrangements and technical concerns for E.R. Hall at Le Mans. | 6th Jun 1936 | Box 90a \ 4 Scan264 | |
| Letter to the Anglo-American Oil Company regarding orders and a request for delivery of French Benzol fuel for testing. | 6th Jun 1936 | Box 90a \ 4 Scan265 | |
| Short internal message, possibly a telegram, inquiring about Hall's address at Le Mans. | 6th Jun 1936 | Box 90a \ 4 Scan266 | |
| Telegram to Robotham in Duffield, Derbyshire, with a message from Sleator regarding the Hotel de Paris in Le Mans. | 1st Jun 1911 | Box 90a \ 4 Scan267 | |
| Typed memo confirming the cancellation of the Le Mans race due to a general strike in France. | 6th Jun 1936 | Box 90a \ 4 Scan268 | |
| Letter to E.R. Hall suggesting pre-race tests for a racing car, including running the fuel tank dry and checking for brake fade. | 8th Jun 1936 | Box 90a \ 4 Scan269 | |
| Letter from the Anglo-American Oil Company Limited regarding the price and delivery of 50 gallons of French Benzole. | 8th Jun 1936 | Box 90a \ 4 Scan270 | |
| Letter from Le Mans detailing race car practice, brake adjustments, and uncertainty about an upcoming race. | 8th Jun 1936 | Box 90a \ 4 Scan271 | |
| Parts requirements and alterations for a practice race car. | 8th Jun 1936 | Box 90a \ 4 Scan272 | |
| Letter from Madrid to Derby regarding a cancelled trip to Le Mans and current work difficulties. | 8th Jun 1936 | Box 90a \ 4 Scan273 | |
| Letter concerning the use of Castrol oil by Mr. E.R. Hall and offering assistance for a visit to Paris. | 8th Jun 1936 | Box 90a \ 4 Scan274 | |
| Letter to Mr. Goodwin regarding the postponement of the Le Mans race due to French strikes. | 9th Jun 1936 | Box 90a \ 4 Scan275 | |
| Letter to E.R. Hall in Le Mans regarding race complications, gear ratios, and potential overheating of the racing car. | 9th Jun 1936 | Box 90a \ 4 Scan276 | |
| Arrangement to send a set of Bentley foot brake shoes to France for E.R. Hall's Le Mans race practice car. | 9th Jun 1936 | Box 90a \ 4 Scan277 | |
| Letter from a travel agent regarding travel arrangements and ticket prices for the Le Mans Race, which was subsequently postponed. | 9th Jun 1936 | Box 90a \ 4 Scan278 | |
| Index of correspondence regarding E.R. Hall's competition car and potential entries for Le Mans and Montlhery in 1936. | 9th Mar 1936 | Box 90a \ 4 Scan279 | |
| Log of correspondence and decisions regarding a Le Mans race entry in March 1936. | 10th Mar 1936 | Box 90a \ 4 Scan280 | |
| Log of communications and actions regarding car preparations, likely for the Le Mans race. | 15th Apr 1936 | Box 90a \ 4 Scan281 | |
| Log detailing daily communications and actions from April 1936. | 13th May 1936 | Box 90a \ 4 Scan282 | |
| Chronological log of internal communications and notes regarding vehicle development, primarily for Le Mans. | 13th May 1936 | Box 90a \ 4 Scan283 | |
| Log of daily correspondence and actions regarding vehicle components, testing, and modifications, particularly for Le Mans. | 23th Jun 1936 | Box 90a \ 4 Scan284 | |
| Log of communications and comments regarding car preparation and testing for the Le Mans and Tourist Trophy races in 1936. | 23th Jun 1936 | Box 90a \ 4 Scan285 | |
| Correspondence from Hall at the Hotel de Paris, Le Mans, regarding a car's weight analysis and windage figures. | 10th Jun 1936 | Box 90a \ 4 Scan286 | |
| Coachwork collaboration, wind tunnel test results, and preparations for testing at Montlhery. | 10th Jun 1936 | Box 90a \ 4 Scan287 | |
| Letter from the Experimental Department requesting various tests on a car, including wind resistance and body analysis. | 10th Jun 1936 | Box 90a \ 4 Scan288 | |
| Letter discussing vehicle performance improvements through weight and wind resistance analysis for future racing. | 10th Jun 1936 | Box 90a \ 4 Scan289 | |
| Letter to S. Smith & Sons Ltd. regarding an incorrectly supplied oil gauge for a Bentley car. | 10th Jun 1936 | Box 90a \ 4 Scan290 | |
| Letter to the Anglo-American Oil Co Ltd. cancelling an order for 50 gallons of fuel for the Le Mans race. | 11th Jun 1936 | Box 90a \ 4 Scan291 | |
| Covering note for a letter and memo sent to E.R. Hall. | 11th Jun 1936 | Box 90a \ 4 Scan292 | |
| Letter to E.R. Hall regarding a weight summary and discrepancy for his car's body and wings. | 11th Jun 1936 | Box 90a \ 4 Scan293 | |
| Comparison of weights between a Le Mans body and wing, and a standard four-door demonstration saloon body and wings. | 11th Jun 1936 | Box 90a \ 4 Scan294 | |
| Mr. Hall's return to England in the event of a continuing strike in France. | 12th Jun 1936 | Box 90a \ 4 Scan295 | |
| Inquiry regarding the performance results for driver 'E.R.' at Le Mans, with a handwritten reply note. | 13th Jun 1936 | Box 90a \ 4 Scan296 | |
| Letter requesting the exact weight particulars for E.R. Hall's car. | 15th Jun 1936 | Box 90a \ 4 Scan297 | |
| Letter to the Royal Automobile Club requesting a copy of the 1936 Tourist Trophy Regulations concerning fuel specifications. | 15th Jun 1936 | Box 90a \ 4 Scan298 | |
| The performance of a practice car and a race car during the Le Mans trials. | 15th Jun 1936 | Box 90a \ 4 Scan299 | |
| The weight breakdown of a vehicle's body and chassis. | 15th Jun 1936 | Box 90a \ 4 Scan300 | |
| Letter from The Royal Automobile Club regarding regulations for the R.A.C. Tourist Trophy Race. | 16th Jun 1936 | Box 90a \ 4 Scan301 | |
| Weight comparison between an old 1935 T.T. exhaust system and a new 1936 Le Mans system for car B-35-AE. | 16th Jun 1936 | Box 90a \ 4 Scan302 | |
| Requesting to book in returned spare parts for Mr. E.R. Hall's car B-35-AE. | 19th Jun 1936 | Box 90a \ 4 Scan303 | |
| Lack of results obtained by E.R. Hall at Le Mans. | 23th Jun 1936 | Box 90a \ 4 Scan304 | |
| Inquiry to 'The Motor' magazine regarding travel arrangements for a party of twelve from Derby to the Ulster T.T. race. | 24th Jun 1936 | Box 90a \ 4 Scan305 | |
| Entry form for the 1936 Tourist Trophy Car Race at the Ards Circuit, Ulster. | 5th Sep 1936 | Box 90a \ 4 Scan306 | |
| Regulations for the Royal Automobile Club's 1936 Tourist Trophy car race. | 1st Jan 1936 | Box 90a \ 4 Scan307 | |
| Letter to Thos. Cook & Son Ltd. requesting a reservation for six seats for a trip to the Tourist Trophy race. | 30th Jun 1936 | Box 90a \ 4 Scan308 | |
| Performance graph comparing a 3 1/2 litre engine against a 4 1/4 litre development engine. | 4th May 1936 | Box 90a \ 4 Scan309 | |
| Article detailing a trip to the R.A.C. Tourist Trophy Race and a note on Glasgow's new road plan. | 23th Jun 1936 | Box 90a \ 4 Scan310 | |
| News page from 'The Motor' magazine from June 1936, featuring articles on motoring, road infrastructure, and vehicle statistics. | 23th Jun 1936 | Box 90a \ 4 Scan311 | |
| Query regarding the name of the paint used on Merlin Marine engines to prevent salt water corrosion. | 18th Aug 1939 | Box 90a \ 5 Scan001 | |
| Painting process for Marine Merlin engines and corrosion prevention. | 19th Aug 1939 | Box 90a \ 5 Scan002 | |
| Letter regarding the paint used on aero engines installed in boats to prevent corrosion. | 21th Aug 1939 | Box 90a \ 5 Scan003 | |
| Letter from Metropolis Garages acknowledging correspondence regarding engine/corrosion. | 23th Aug 1939 | Box 90a \ 5 Scan004 | |
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