| Description | Date | Identifier | |
| Hydraulic jack recently placed on the market by Messrs. Benton & Stone. | 14th Jul 1925 | Box 10 \ 6 06-page35 | |
| Drawing alteration note for a wind intercepter component, drawing number G.A. 1383. | 18th Jan 1918 | Box 10 \ 6 06-page36 | |
| Suitability of a Benton & Stone hydraulic jack. | 16th Jul 1925 | Box 10 \ 6 06-page37 | |
| Heavily faded and almost entirely illegible typed document with a faint upside-down stamp. | 1st Oct 1938 | Box 10 \ 6 06-page38 | |
| Indicating the location of previous correspondence files. | 3rd Mar 1933 | Box 11 \ 1 01-page01 | |
| Confirming satisfactory testing of Kelmit bearings and requesting the progression of large bore pistons for the P.II. | 3rd Mar 1933 | Box 11 \ 1 01-page02 | |
| Proposal to fit a list of parts to a large bore Phantom II car destined for France. | 15th Mar 1933 | Box 11 \ 1 01-page03 | |
| Component specifications and modifications for the 8 Litre Phantom. | 20th Mar 1933 | Box 11 \ 1 01-page04 | |
| Requesting an opportunity to test ride finished Phantom cars with low rating front springs during their road test from Derby to Cricklewood. | 27th Mar 1933 | Box 11 \ 1 01-page05 | |
| Measured valve timing for P.II. No.2 and No.4 setups. | 31th Mar 1933 | Box 11 \ 1 01-page06 | |
| Strengthened main bearing caps made in dural for the Phantom II. | 4th Apr 1933 | Box 11 \ 1 01-page07 | |
| Low-rated springs for the Phantom II, attaching a related memo from Mr. Evans. | 30th Mar 1933 | Box 11 \ 1 01-page08 | |
| Availability of four Phantom II cars for testing low rated springs. | 29th Mar 1933 | Box 11 \ 1 01-page09 | |
| Outlining proposed modifications for a large bore Phantom unit. | 22th Apr 1933 | Box 11 \ 1 01-page10 | |
| Blueprints for larger Inlet Valves and seats for a Phantom II Chassis engine experiment. | 25th Apr 1933 | Box 11 \ 1 01-page11 | |
| Comparison of lubrication specifications between the Phantom II car engine and the Kestrel aero engine. | 15th May 1933 | Box 11 \ 1 01-page12 | |
| Comparing competitor cars (Buick, Essex Terraplane) on quietness and performance, concluding a need for improvement. | 15th Jun 1933 | Box 11 \ 1 01-page13 | |
| Proposal for a 10,000-mile test on an 8-litre Phantom using Kelmit bearings with a hardened shaft. | 20th Jun 1933 | Box 11 \ 1 01-page14 | |
| Silence and vibration of cars, with comparisons to American models and the Essex. | 22th Jun 1933 | Box 11 \ 1 01-page15 | |
| Requesting the modification of inlet valves for a Phantom 8 litre No.7 vehicle. | 27th Jun 1933 | Box 11 \ 1 01-page16 | |
| Examination report and running time analysis for Kelmit bearings on the Phantom model. | 9th Aug 1933 | Box 11 \ 1 01-page17 | |
| Data memorandum on the Phantom II engine with balanced crankshafts for use in tanks. | 24th Aug 1933 | Box 11 \ 1 01-page18 | |
| Phantom engine's compression ratio in light of new leaded fuels from Shell & B.P. | 25th Aug 1933 | Box 11 \ 1 01-page19 | |
| The lack of new parts to increase power on the Phantom II, with the next increase contemplated being a larger engine. | 6th Oct 1933 | Box 11 \ 1 01-page20 | |
| Report from the Bush Hotel on the performance of the 20 EX, specifically noting the silent operation of the tappets. | 10th May 1934 | Box 11 \ 1 01-page21 | |
| Request to the Repair Department to decarbonise an engine, adjust tappets, fix a valve and adjust the brakes. | 10th May 1934 | Box 11 \ 1 01-page22 | |
| Typed memo to Bailey regarding a car required for experimental work. | 28th Aug 1934 | Box 11 \ 1 01-page23 | |
| Steering troubles with the Spectre model and requesting suspension modifications. | 6th Sep 1934 | Box 11 \ 1 01-page24 | |
| Proposal to sell an Experimental Phantom Car, including an offer received from a local undertaker. | 12th Sep 1934 | Box 11 \ 1 01-page25 | |
| New type of Phantom II mascot (the kneeling figure) for car 30-EX. | 13th Sep 1934 | Box 11 \ 1 01-page26 | |
| Future of Phantom Car 27-EX, its scrap independent suspension, and the need for a new frame. | 18th Sep 1934 | Box 11 \ 1 01-page27 | |
| Car 27-EX, discussing the need for a new frame due to its original independent wheel suspension. | 19th Sep 1934 | Box 11 \ 1 01-page28 | |
| Outstanding work and modifications required for experimental Bentley chassis. | 20th Sep 1934 | Box 11 \ 1 01-page29 | |
| The sale preparation and non-standard parts of chassis number 20-EX. | 3rd Oct 1934 | Box 11 \ 1 01-page30 | |
| Delay in repairs for Chassis No. 20-EX, awaiting information from the Experimental Department. | 8th Oct 1934 | Box 11 \ 1 01-page31 | |
| Listing parts to be removed from Chassis No. 20-EX and replaced with standard pieces. | 9th Oct 1934 | Box 11 \ 1 01-page32 | |
| Disposal of existing experimental cars following new developments. | 9th Oct 1934 | Box 11 \ 1 01-page33 | |
| List of production modifications for the Phantom II 'T.2' Series chassis. | 11th Oct 1934 | Box 11 \ 1 01-page34 | |
| List of modifications to bearings and a gearbox vent, noting the deletion of the exhaust cutout and a request for updated standardisation sheets. | 11th Oct 1934 | Box 11 \ 1 01-page35 | |
| Disposal of experimental cars. | 11th Oct 1934 | Box 11 \ 1 01-page36 | |
| The disposal of a 22-EX (40/50) Phantom car and sending it to the Repair Shop for instructions. | 12th Oct 1934 | Box 11 \ 1 01-page37 | |
| Fitting of rear shock damper control rods on a Phantom, noting required battery modifications and unsatisfactory test results. | 15th Oct 1934 | Box 11 \ 1 01-page38 | |
| Modifications and required examinations for chassis 22-EX. | 16th Oct 1934 | Box 11 \ 1 01-page39 | |
| Inquiry regarding the disposal of experimental chassis 22-EX and its conversion requirements. | 17th Oct 1934 | Box 11 \ 1 01-page40 | |
| Outlining the decision to dispose of car 22-EX and for the Repair Dept. to remove its experimental features. | 18th Oct 1934 | Box 11 \ 1 01-page41 | |
| Comparison table of ground clearance measurements for various car models. | 29th Oct 1934 | Box 11 \ 1 01-page42 | |
| Instruction memo to fit a bumper bar, dismantle shock dampers, and modify pistons on car 27-EX. | 17th Nov 1934 | Box 11 \ 1 01-page43 | |
| Oil intake issue with the large semi-expanding carburetter on the Phantom II and the proposed solution. | 28th Nov 1934 | Box 11 \ 1 01-page44 | |
| Reversing a decision to stop producing Phantoms, instead ordering an additional 25 to be made. | 26th Nov 1934 | Box 11 \ 1 01-page45 | |
| Instruction to dismantle and scrap a Phantom II Bumper Chassis, order number 54102. | 12th Dec 1934 | Box 11 \ 1 01-page46 | |
| Secret memo discussing the car programme, specifically a proposal to introduce the Spectre engine into the Phantom chassis. | 12th Feb 1935 | Box 11 \ 1 01-page47 | |
| Listing various car and aero engine parts sent to the Repair Department for dismantling and scrap. | 12th Feb 1935 | Box 11 \ 1 01-page48 | |
| Seeking clarification on the history and specifications of an experimental car for prospective purchasers. | 27th Feb 1935 | Box 11 \ 1 01-page49 | |
| Listing vehicle modifications and discussing how to represent the car's condition and mileage to potential buyers. | 27th Feb 1935 | Box 11 \ 1 01-page50 | |
| Progress report on the Spectre, Phantom, and Bentley models, covering insulation, testing, and supercharging. | 11th Apr 1935 | Box 11 \ 1 01-page51 | |
| Progress report on testing and development of axle control, water excluders, braking systems, and gear levers. | 11th Apr 1935 | Box 11 \ 1 01-page52 | |
| Performance issues due to increased weight, steering modifications, gear ratios, and engine development. | 11th Apr 1935 | Box 11 \ 1 01-page53 | |
| Exhaust hot spot temperature tests conducted on a Phantom II vehicle. | 13th Apr 1935 | Box 11 \ 1 01-page54 | |
| Request to arrange for the use of car 28EX for a trip to Liverpool. | 13th Apr 1935 | Box 11 \ 1 01-page55 | |
| Short handwritten letter discussing the weather and exploring an island. | 23th May 1935 | Box 11 \ 1 01-page56 | |
| Urgent memo to cease all work on the last 83 Phantom 'U.2' Series chassis. | 23th May 1935 | Box 11 \ 1 01-page57 | |
| Confirming the arrangement for Tunnicliffe to have the 28-EX car. | 29th Jul 1935 | Box 11 \ 1 01-page58 | |
| Request to strip an All Aluminium Phantom Engine for inspection after long-term supercharging work. | 20th Sep 1935 | Box 11 \ 1 01-page59 | |
| Listing proposed design features for Phantom and Bentley models. | 29th May 1934 | Box 11 \ 1 01-page60 | |
| List of design features for the Terraplane and 20/25 models. | 29th May 1934 | Box 11 \ 1 01-page61 | |
| Table outlining the particulars of various car engines. | 16th May 1934 | Box 11 \ 1 01-page62 | |
| Chassis points requiring urgent attention, specifically regarding noise and steering control. | 20th Nov 1933 | Box 11 \ 1 01-page63 | |
| Urgent issues with the Phantom II chassis, including noisy engines, fan belt clearance, and poor high-speed steering. | 16th Nov 1933 | Box 11 \ 1 01-page64 | |
| Future of magneto ignition versus battery-based stand-by ignition systems. | 4th Jul 1933 | Box 11 \ 1 01-page65 | |
| Summary of the progress on the silent tappet job, discussing filters, rocker shafts, and oil feed mechanisms. | 16th Apr 1934 | Box 11 \ 1 01-page66 | |
| Tests and issues related to rocker shafts, valves, universal joints, and fuel systems. | 16th Apr 1934 | Box 11 \ 1 01-page67 | |
| Letter discussing the design, manufacture, and testing of 26-EX shock damper elbows. | 10th Apr 1934 | Box 11 \ 1 01-page68 | |
| Multiple faults and repair actions on a car. | 8th Apr 1934 | Box 11 \ 1 01-page69 | |
| Car 28-EX at 10,000 miles, detailing engine performance and acceleration data. | 23th Apr 1934 | Box 11 \ 1 01-page70 | |
| Inspection report detailing the condition of engine components including connecting rods, pistons, cylinders and valves. | 23th Apr 1934 | Box 11 \ 1 01-page71 | |
| Status report on the clutch, servo motor, gearbox, and carburetter components. | 23th Apr 1934 | Box 11 \ 1 01-page72 | |
| The performance and necessary adjustments for various vehicle components including dampers, pedals, radiator, and exhaust. | 23th Apr 1934 | Box 11 \ 1 01-page73 | |
| The condition and performance of various vehicle components including the wheelcase, ignition plugs, petrol tank, and drivetrain. | 23th Apr 1934 | Box 11 \ 1 01-page74 | |
| The performance of hydraulic dampers, steering column and box, and the rear axle. | 23th Apr 1934 | Box 11 \ 1 01-page75 | |
| Issues and modifications to the exhaust system, brake equaliser shafts, and road springs. | 23th Apr 1934 | Box 11 \ 1 01-page76 | |
| The performance and condition of steering tubes, buffer clearances, and brakes during mileage testing. | 23th Apr 1934 | Box 11 \ 1 01-page77 | |
| The performance and condition of various electrical system components. | 20th Sep 1934 | Box 11 \ 1 01-page78 | |
| List of modifications and required work for various vehicle chassis. | 20th Sep 1934 | Box 11 \ 1 01-page79 | |
| List of modifications and parts for clutch, engine, and suspension systems. | 20th Sep 1934 | Box 11 \ 1 01-page80 | |
| Car 20-EX being sent to the Repair Dept. to be made into a standard car for sale. | 21th Sep 1934 | Box 11 \ 1 01-page81 | |
| Particulars regarding 40/50 HP engines in tanks. | 23th Aug 1933 | Box 11 \ 1 01-page82 | |
| Disposal of car 20-EX and the return of a Bosch Dynamo and Jackall Jacks. | 26th Sep 1934 | Box 11 \ 1 01-page83 | |
| Confirming a phone conversation about Chassis 20-EX and requesting it be handed to the Repair Department. | 21th Sep 1934 | Box 11 \ 1 01-page84 | |
| Refurbishing and selling car 20-EX after a customer is unlikely to purchase it. | 21th Sep 1934 | Box 11 \ 1 01-page85 | |
| Requesting recommendations for shipping the car 'SS' 18-EX to France. | 1st Dec 1928 | Box 11 \ 2 02-page001 | |
| Requesting arrangements for Mr. Yarnall to inspect the 18-EX car before it is sent to France. | 6th Dec 1928 | Box 11 \ 2 02-page002 | |
| Secret memo discussing a compromise from a board meeting regarding the launch of the 'SS' and new 20 HP models, production plans, and a 10,000-mile test. | 10th Dec 1928 | Box 11 \ 2 02-page003 | |
| Requesting arrangements for staff to test a second chassis, a new starter, and clarifying the 10,000-mile test protocol for the 'SS' model. | 10th Dec 1928 | Box 11 \ 2 02-page004 | |
| Altering the plan to send an experimental car to France, changing the model from 18-EX to 14-EX. | 10th Dec 1928 | Box 11 \ 2 02-page005 | |
| Letter regarding vehicle tests in France, arranging for spare front springs and advising on test parameters. | 17th Dec 1928 | Box 11 \ 2 02-page006 | |
| Car's post-run performance, detailing issues with the rear springs, maximum speed, and a request for special oil. | 17th Dec 1928 | Box 11 \ 2 02-page007 | |
| Conditions for a 10,000-mile test on an 'SS' model, including restrictions due to a previous fatal accident. | 12th Dec 1928 | Box 11 \ 2 02-page008 | |
| Page discussing whether a test should be repeated. | 12th Dec 1928 | Box 11 \ 2 02-page009 | |
| Continued document, page 2, discussing if a test should be repeated. | 12th Dec 1928 | Box 11 \ 2 02-page010 | |
| Running schedule for vehicle 18-EX, detailing daily mileage and activities over a period in December and January. | 12th Dec 1928 | Box 11 \ 2 02-page011 | |
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