| Description | Date | Identifier | |
| Telegram informing of Robotham's return from Chateauroux. | 25th May 1935 | Box 91 \ 1 scan0294 | |
| Road test report for a Phantom III vehicle, detailing performance issues during testing on Mount Ventoux. | 26th May 1936 | Box 91 \ 1 scan0295 | |
| Test report on car 32-EX in France, detailing efforts to locate a metallic rattle and other observed issues. | 26th May 1936 | Box 91 \ 1 scan0296 | |
| Vehicle maintenance tasks carried out in a garage and a subsequent journey. | 26th May 1936 | Box 91 \ 1 scan0297 | |
| Modifications to an aluminium crankcase to address engine roughness. | 26th May 1936 | Box 91 \ 1 scan0298 | |
| The status and required work for a list of cars in the workshop. | 27th May 1936 | Box 91 \ 1 scan0299 | |
| Rebuilding of a Packard, modifications to 'Sg's Car', and improvements to the Phantom III steering and suspension. | 27th May 1936 | Box 91 \ 1 scan0300 | |
| Issues with car 32-EX, concerning rear spring clearance, brake drum fouling, shock absorber leaks, and a propeller shaft proposal. | 27th May 1936 | Box 91 \ 1 scan0301 | |
| Letter from the Royal Automobile Club concerning a customs issue with a Phantom III chassis at the French/Spanish border. | 27th May 1936 | Box 91 \ 1 scan0302 | |
| From France concerning personnel holidays and vehicle status delays for 22.G.V. and 32 EX. | 27th May 1936 | Box 91 \ 1 scan0303 | |
| Faults and repairs on a Phantom III vehicle. | 27th May 1936 | Box 91 \ 1 scan0304 | |
| Brake, steering, and suspension issues and their rectification. | 27th May 1936 | Box 91 \ 1 scan0305 | |
| Query regarding front buffer bump and rebound clearances on model 32-EX. | 28th May 1936 | Box 91 \ 1 scan0306 | |
| Production of the Ph.III, authorising the incorporation of improved accessibility from N.Sch.4719. | 29th May 1936 | Box 91 \ 1 scan0307 | |
| High-speed handling and suspension issues of the Phantom III model 32-EX in France. | 4th Jun 1936 | Box 91 \ 1 scan0308 | |
| Outlining the objectives for endurance running in France on a 20/25 model, including tests on valves, bearings, and cylinder heads. | 5th Jun 1936 | Box 91 \ 1 scan0309 | |
| Modifications and issues with the clutch, gearbox, and carburettor for the 32-EX model. | 5th Jun 1936 | Box 91 \ 1 scan0310 | |
| Testing requirements and proposed modifications for brakes, steering, cooling, and petrol supply on a test vehicle. | 5th Jun 1936 | Box 91 \ 1 scan0311 | |
| Requesting the dispatch of standard production parts to France for assembling an intermediate shaft for 32-EX Brakes. | 8th Jun 1936 | Box 91 \ 1 scan0312 | |
| Telegram message received by telephone regarding a torn inner clutch fabric requiring repair. | 9th Jun 1936 | Box 91 \ 1 scan0313 | |
| Telegram reporting a gearbox failure on car 32 EX. | 9th Jun 1936 | Box 91 \ 1 scan0314 | |
| Telegram to Hancock in France regarding the delivery of a clutch plate. | 9th Jun 1936 | Box 91 \ 1 scan0315 | |
| Request for three tests on the Phantom III engine regarding the breather, throttle spring, and gudgeon pin oiling. | 10th Jun 1936 | Box 91 \ 1 scan0316 | |
| Production delays for chassis due to clutch supply issues. | 10th Jun 1936 | Box 91 \ 1 scan0317 | |
| The non-arrival of a Clutch Plate for chassis 32. EX. at the Paris Depot. | 11th Jun 1936 | Box 91 \ 1 scan0318 | |
| Letter discussing a difficulty in dismantling a clutch casing and proposing a modification for easier removal. | 12th Jun 1936 | Box 91 \ 1 scan0319 | |
| Hand-drawn sketch detailing modifications for dismantling a clutch component. | 13th Jun 1936 | Box 91 \ 1 scan0320 | |
| Temporary scheme for a rubber-mounted thermometer union and plans for its standardisation. | 13th Jun 1936 | Box 91 \ 1 scan0321 | |
| Investigating and solving petrol spray from the Phantom III carburettor breather pipe during braking. | 14th Jun 1936 | Box 91 \ 1 scan0322 | |
| Pencil sketch of a Phantom III float chamber showing modifications to the vent position and an isolated chamber. | 14th Jun 1936 | Box 91 \ 1 scan0323 | |
| Exploded view pencil sketch of a 25.30 HP float chamber. | 15th Jun 1936 | Box 91 \ 1 scan0324 | |
| Modifications to the hand brake adjustment mechanism and associated tool kit. | 15th Jun 1936 | Box 91 \ 1 scan0325 | |
| Blueprint drawing with dimensions for a bent tool or key. | 15th Jun 1936 | Box 91 \ 1 scan0326 | |
| Adjustments to front dampers causing a grunting noise and brake thumps on a Phantom III. | 15th Jun 1936 | Box 91 \ 1 scan0327 | |
| The poor performance of a new clutch plate fitted to a Phantom III, detailing issues with jaggering and grabbing. | 16th Jun 1936 | Box 91 \ 1 scan0328 | |
| Performance of a rubber-mounted thermometer on a Phantom III during testing. | 17th Jun 1936 | Box 91 \ 1 scan0329 | |
| Leaving surclips off clutch cover bolts and a change in material for the trunnion shaft. | 17th Jun 1936 | Box 91 \ 1 scan0330 | |
| Lack of reports for several days in June. | 17th Jun 1936 | Box 91 \ 1 scan0331 | |
| Loud roaring sound from a Phantom III carburetter, traced to grit blocking the induction pipe drain valves. | 17th Jun 1936 | Box 91 \ 1 scan0332 | |
| Investigation into engine oil leaks, identifying a stripped crankcase stud hole and another untraced leak. | 18th Jun 1936 | Box 91 \ 1 scan0333 | |
| To G.W. Hancock requesting feedback on a new malleable iron steering box for car 32-EX. | 18th Jun 1936 | Box 91 \ 1 scan0334 | |
| Car's gearbox seizure which required complete dismantling and a new clutch plate to be fitted. | 18th Jun 1936 | Box 91 \ 1 scan0335 | |
| Telegram to Hancock in France regarding the delivery of steering replacement parts. | 19th Jun 1936 | Box 91 \ 1 scan0336 | |
| To G.W. Hancock regarding spanners for the hand brake adjustment on car 32-EX. | 19th Jun 1936 | Box 91 \ 1 scan0337 | |
| Dynamo failure caused by cracked 'bakelite' insulation and the subsequent repairs performed. | 19th Jun 1936 | Box 91 \ 1 scan0338 | |
| Issues with hydraulic jacks, including pads sinking into the ground and brake linkage problems when the vehicle is lifted. | 21th Jun 1936 | Box 91 \ 1 scan0339 | |
| Letter detailing an investigation into an oil leak from the valve operating gear cover plate. | 21th Jun 1936 | Box 91 \ 1 scan0340 | |
| Letter to G.W. Hancock requesting his whereabouts and discussing issues with Borg & Beck clutches on Bentley cars. | 22th Jun 1936 | Box 91 \ 1 scan0341 | |
| To H.F. Hamilton in France regarding an issue of petrol boiling in the carburetter. | 22th Jun 1936 | Box 91 \ 1 scan0342 | |
| Testing the Phantom III float chamber vent pipe for petrol spray issues under braking and flooding conditions. | 23th Jun 1936 | Box 91 \ 1 scan0343 | |
| Tests on a float chamber vent and an attached sketch for a new vent pipe. | 23th Jun 1936 | Box 91 \ 1 scan0344 | |
| Tests conducted on petrol pump and pipe boiling to address vapour lock in high temperatures. | 23th Jun 1936 | Box 91 \ 1 scan0345 | |
| Testing a modification to the fuel pump location to prevent fuel starvation and vapour lock. | 23th Jun 1936 | Box 91 \ 1 scan0346 | |
| Under-bonnet temperatures, a higher speed fan, and the positioning of petrol pumps. | 28th Jun 1936 | Box 91 \ 1 scan0347 | |
| Diagram illustrating the petrol pump and filter assembly on a Phantom III chassis. | 27th Jun 1936 | Box 91 \ 1 scan0348 | |
| Report investigating axle shock damping trouble and its effect on pitching for the 32. EX. model. | 24th Jun 1936 | Box 91 \ 1 scan0349 | |
| Petrol boiling tests, clarifying that fuel vaporises in the supply pipe, not the carburetters. | 24th Jun 1936 | Box 91 \ 1 scan0350 | |
| Requesting access to experimental Phantom III cars for colour photography. | 25th Jun 1936 | Box 91 \ 1 scan0351 | |
| Short memo arranging a photoshoot for experimental cars 33-EX, 35-EX, and 36-EX. | 26th Jun 1936 | Box 91 \ 1 scan0352 | |
| To H.F. Hamilton regarding the correct petrol flow for a carburetter to avoid starvation at high speeds. | 26th Jun 1936 | Box 91 \ 1 scan0353 | |
| Accident involving car 32-EX in France and its return to Derby. | 26th Jun 1936 | Box 91 \ 1 scan0354 | |
| Telegram received by telephone reporting on a car accident involving car 32 E-X. | 26th Jun 1936 | Box 91 \ 1 scan0355 | |
| On the satisfactory performance of a malleable iron steering box fitted to vehicle 32.EX. | 27th Jun 1936 | Box 91 \ 1 scan0356 | |
| Dynamo breakdown on car 32.EX due to cracked bakelite insulation. | 27th Jun 1936 | Box 91 \ 1 scan0357 | |
| Confirmation of a telegram regarding car 32EX returning to Derby via Boulogne and awaiting instructions. | 27th Jun 1936 | Box 91 \ 1 scan0358 | |
| Accident with car 32-EX in France, requesting an update on the extent of the damage. | 29th Jun 1936 | Box 91 \ 1 scan0359 | |
| List of part specifications and updates for Phantom III, 25 HP, and Bentley models. | 30th Jun 1936 | Box 91 \ 1 scan0360 | |
| Complaint regarding a missed opportunity to photograph car 33-EX and other P.III's, stressing the importance of capturing coloured images. | 30th Jun 1936 | Box 91 \ 1 scan0361 | |
| Car accident, mileage, and investigations into petrol system vapour lock issues under hot conditions. | 30th Jun 1936 | Box 91 \ 1 scan0362 | |
| Failure of petrol supply under high-temperature continental conditions, requiring a petrol pump redesign for the Phantom III and also referencing the 20/25 model. | 30th Jun 1936 | Box 91 \ 1 scan0363 | |
| Tests for petrol and water boiling at high speeds on hot days, comparing inside and outside petrol pipes. | 27th Jun 1936 | Box 91 \ 1 scan0364 | |
| Log of under-bonnet, water jacket, and radiator inlet temperature readings. | 20th Jun 1936 | Box 91 \ 1 scan0365 | |
| Results of strengthened pump springs on chassis 32.EX after road testing. | 27th Jun 1936 | Box 91 \ 1 scan0366 | |
| Sketch illustrating a possible mounting for Phantom III pumps on the dashboard. | 30th Jun 1936 | Box 91 \ 1 scan0367 | |
| Cover note attaching reports on an accident to car 32-EX in France. | 30th Jun 1936 | Box 91 \ 1 scan0368 | |
| Letter detailing an accident involving car 32.EX. and a list of the resulting damage. | 27th Jun 1936 | Box 91 \ 1 scan0369 | |
| Vehicle mileage reports, clutch and vapour lock issues, and a personal holiday request. | 30th Jun 1936 | Box 91 \ 1 scan0370 | |
| Request for the return of a special set of levers for a rear foot brake intermediate shaft from France to Derby. | 1st Jul 1936 | Box 91 \ 1 scan0371 | |
| Correcting previous information regarding the photographing of Phantom III cars. | 2nd Jul 1936 | Box 91 \ 1 scan0372 | |
| The availability of cars for colour photography, specifically the Phantom III 33-EX. | 2nd Jul 1936 | Box 91 \ 1 scan0373 | |
| Test report on the first production Phantom III trials car with a limousine body by Windovers. | 2nd Jul 1936 | Box 91 \ 1 scan0374 | |
| Arrangements for photographing Phantom III cars. | 3rd Jul 1936 | Box 91 \ 1 scan0375 | |
| Confirming the dispatch of a set of levers by registered parcel post. | 3rd Jul 1936 | Box 91 \ 1 scan0376 | |
| Inquiry regarding the specification for the Long Wheelbase Phantom for coachwork construction at Park Ward's. | 7th Jul 1936 | Box 91 \ 1 scan0377 | |
| The specification for a Long Wheelbase Phantom. | 10th Jul 1936 | Box 91 \ 1 scan0378 | |
| Status report on the Phantom III 15,000-mile car, including updates on clutches and steering systems. | 11th Jul 1936 | Box 91 \ 1 scan0379 | |
| Solutions for vapour lock, connecting rod big ends, and Continental chassis replacements. | 11th Jul 1936 | Box 91 \ 1 scan0380 | |
| The 20/25 HP 15,000-mile car, focusing on idling improvements and investigating high oil consumption. | 11th Jul 1936 | Box 91 \ 1 scan0381 | |
| Testing and issues with Bentley clutches and brake jaggers. | 11th Jul 1936 | Box 91 \ 1 scan0382 | |
| Letter from General Motors Proving Ground requesting photographs and literature for new car models. | 23th Jul 1936 | Box 91 \ 1 scan0383 | |
| Test drive report on the 37-EX Phantom III, detailing its performance and handling. | 11th Aug 1936 | Box 91 \ 1 scan0384 | |
| Test drive report detailing various noises, suspension issues, and electrical faults observed in a vehicle. | 14th Aug 1936 | Box 91 \ 1 scan0385 | |
| 10,000-mile test in France for a Phantom III 32-EX Close-Coupled Saloon by Park Ward. | 14th Aug 1936 | Box 91 \ 1 scan0386 | |
| Engine performance, detailing issues with oil consumption, pressure, starting, and tappets. | 14th Aug 1936 | Box 91 \ 1 scan0387 | |
| The performance and testing of a Double Choke Stromberg Carburetter, detailing starting issues, road tests, and fuel performance. | 14th Aug 1936 | Box 91 \ 1 scan0388 | |
| The performance and inspection of various engine components, including the throttle, carburetter, pistons, and bearings. | 14th Aug 1936 | Box 91 \ 1 scan0389 | |
| The condition and performance of various engine components after a 10,000-mile test. | 14th Aug 1936 | Box 91 \ 1 scan0390 | |
| The performance and issues of hydraulic tappets, cylinders, dynamo, water pump, and camshaft bearings after mileage tests. | 10th Sep 1907 | Box 91 \ 1 scan0391 | |
| The performance of the oil pump, water pump, fan, inlet pipes, and tappet oil filter. | 10th Sep 1907 | Box 91 \ 1 scan0392 | |
| Test report on an oil level indicator, thermometer, ignition wires, sparking plugs and terminals. | 14th Jun 1936 | Box 91 \ 1 scan0393 | |
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