| Description | Date | Identifier | |
| Urgent internal memo requesting a detailed cost statement for tools and spares on 20/25 HP and Phantom ll cars. | 11th Jan 1932 | Box 105 \ 4 scan0221 | |
| Price inquiries for various spanners and tommy bars for car tool kits. | 11th Jan 1932 | Box 105 \ 4 scan0222 | |
| Requesting comparative prices for spanners and clarification on part marking requirements. | 1st Jan 1932 | Box 105 \ 4 scan0223 | |
| Proposal for a new hub removing spanner for the 20/25 HP chassis. | 18th Jan 1932 | Box 105 \ 4 scan0224 | |
| Suggesting cost savings on car tool and spares equipment, with a breakdown of current and future costs. | 1st Jan 1932 | Box 105 \ 4 scan0225 | |
| Note listing part numbers and the pricing of tools for a Phantom II car. | 16th Jan 1932 | Box 105 \ 4 scan0226 | |
| Economies by deleting certain tools and spare parts from the standard car equipment. | 16th Jan 1932 | Box 105 \ 4 scan0227 | |
| Cost-saving measures through tool substitutions and component design alterations. | 14th Jan 1932 | Box 105 \ 4 scan0228 | |
| Standardizing plugs and spanners to reduce costs, with a revised tool kit list. | 16th Jan 1932 | Box 105 \ 4 scan0229 | |
| Continued list of tools and parts, including tyre levers, gauges, spanners, and hub tools. | 15th Jan 1932 | Box 105 \ 4 scan0230 | |
| List of spare parts and tools to be deleted from the 40/50 HP Phantom II chassis equipment for cost savings. | 15th Jan 1932 | Box 105 \ 4 scan0231 | |
| Cost-saving measures through alterations to tools and chassis components. | 16th Jan 1932 | Box 105 \ 4 scan0232 | |
| Rationalization and potential economies of car tool and spares equipment. | 27th Jan 1932 | Box 105 \ 4 scan0233 | |
| The deletion of chassis spares and tools for economy on the 20/25 HP and 40/50 HP models. | 3rd Feb 1932 | Box 105 \ 4 scan0234 | |
| Recommending the replacement of single-ended spanners with double-ended jaw spanners for car tool kits, detailing parts, prices, and savings. | 1st Feb 1932 | Box 105 \ 4 scan0235 | |
| Confirming the decision to adopt double-ended jaw spanners once the stock of single-ended spanners is exhausted. | 5th Feb 1932 | Box 105 \ 4 scan0236 | |
| Confirming the arrangement for double-ended jaw spanners to be adopted for the 20/25 HP 'U' series and 40/50 R.H. and L.H. chassis. | 9th Feb 1932 | Box 105 \ 4 scan0237 | |
| Arguing against changing from single-ended to double-ended car spanners. | 13th Feb 1932 | Box 105 \ 4 scan0238 | |
| Chassis tool kit, particularly single-ended spanners, and potential cost savings. | 19th Feb 1932 | Box 105 \ 4 scan0239 | |
| Standardisation of chassis parts, specifically the reversion to double ended jaw spanners for car tool kits. | 6th Feb 1932 | Box 105 \ 4 scan0240 | |
| Standardisation of chassis parts form detailing the introduction of a new part. | 10th Apr 1932 | Box 105 \ 4 scan0241 | |
| Suggesting the number of spanners in the 20/25 chassis tool kit is unwarranted. | 22th Feb 1932 | Box 105 \ 4 scan0242 | |
| Adoption of double-ended spanners for economy, noting a preference for single-ended ones. | 30th Mar 1932 | Box 105 \ 4 scan0243 | |
| Questioning the adequacy of the double-ended spanner in the tool kit for tappet adjustment. | 8th Aug 1932 | Box 105 \ 4 scan0244 | |
| Rationale for including a double-ended spanner in the tool kit for 20/25 HP cars. | 9th Aug 1932 | Box 105 \ 4 scan0245 | |
| Options for tool storage on 40/50, 20/25, and Bentley models, moving away from under-bonnet locations. | 6th Feb 1934 | Box 105 \ 4 scan0246 | |
| Request to include a tappet spanner in the tool kits for the Phantom III & 25 HP cars. | 5th Mar 1936 | Box 105 \ 4 scan0247 | |
| On the correct procedure for removing the distributor cam on Bentley and 20/25 HP cars to prevent engine detonation. | 12th Jun 1936 | Box 105 \ 4 scan0248 | |
| Secret memo concerning the introduction of a new pedal position on chassis for the Indian market. | 12th May 1925 | Box 105 \ 4 scan0249 | |
| Standardisation of chassis parts by moving the pedals nearer the dashboard to improve body space. | 18th May 1926 | Box 105 \ 4 scan0250 | |
| Standardisation Sheet No.5470, for putting the pedals nearer the dash on the 20 HP chassis. | 16th Jun 1926 | Box 105 \ 4 scan0251 | |
| Confirming consent for the incorporation of stops on the 'India' plus FWB brake pedals. | 26th May 1925 | Box 105 \ 4 scan0252 | |
| Authorising a standardisation to move the pedals on the 20 HP model 2 inches nearer the dash. | 16th Jun 1926 | Box 105 \ 4 scan0253 | |
| Proposal to improve accelerator pedal operation by adding a radius to the pedal plate. | 16th Apr 1928 | Box 105 \ 4 scan0254 | |
| Proposed new positions for the 20 HP steering column and pedals. | 29th Jun 1929 | Box 105 \ 4 scan0255 | |
| Driver seating positions, cushion dimensions, and adjustments for different driver sizes. | 29th May 1930 | Box 105 \ 4 scan0256 | |
| Modifications to the clutch and brake pedals for the J.3 model, including prints for new schematics. | 10th Mar 1931 | Box 105 \ 4 scan0257 | |
| The modification and standardisation of adjustable clutch pedals for the 25 HP Synchro Mesh Gearbox. | 15th Jul 1931 | Box 105 \ 4 scan0258 | |
| Complaints of a driver's shoe getting jammed by the brake pedal on the 20/25 HP Chassis. | 11th Nov 1931 | Box 105 \ 4 scan0259 | |
| Tapping noise from pedal movement caused by engine torsion. | 24th Nov 1931 | Box 105 \ 4 scan0260 | |
| New scheme for pedal mounting, modified from original Japan schemes to suit a new gearbox. | 24th Nov 1931 | Box 105 \ 4 scan0261 | |
| Sending drawing N.Sch.3398, which shows the J.3. accelerator pedal and notes its similarity to the Phantom's. | 31th Dec 1931 | Box 105 \ 4 scan0262 | |
| The scoring of a pedal shaft bearing on a 25 HP chassis due to inadequate lubrication, requiring a design alteration. | 27th May 1932 | Box 105 \ 4 scan0263 | |
| Preventing clutch pedal oscillation on J.III and Peregrine models by adding a spring thackery washer. | 15th Jul 1932 | Box 105 \ 4 scan0264 | |
| Modification to the 25 HP accelerator pedal to reduce its operational load. | 8th Oct 1935 | Box 105 \ 4 scan0265 | |
| Loose diagonal link on the pedal shaft of car 22-G-V, recommending a modification for production cars. | 5th May 1936 | Box 105 \ 4 scan0266 | |
| Cost-saving modification for the 25/30 model pedals, changing a stay from a brazed assembly to a single forged piece. | 25th Mar 1937 | Box 105 \ 4 scan0267 | |
| Requesting suggestions for fixing recurrent squeaks on chassis GNC-28. | 14th Nov 1938 | Box 105 \ 4 scan0268 | |
| The investigation and resolution of servo squeaks for chassis GNC-26. | 21th Nov 1938 | Box 105 \ 4 scan0270 | |
| Inefficient servos in Bentley chassis due to wear on dowel pins and a proposed solution. | 18th Oct 1938 | Box 105 \ 4 scan0271 | |
| Diagram illustrating wear and a subsequent modification to Servo-Frein (Servo Brake) components. | 14th Oct 1938 | Box 105 \ 4 scan0272 | |
| Modifications and issues with the servo on a Bentley chassis. | 20th Oct 1938 | Box 105 \ 4 scan0273 | |
| Resolving a knock in a Wraith's rear shock damper by reducing lateral play. | 20th Sep 1938 | Box 105 \ 4 scan0274 | |
| Front spring failures and recommending brake improvements on the 20 HP car. | 27th Nov 1924 | Box 106 \ 1 scan0001 | |
| Continued discussion on brake drum scoring and wear with 4-wheel servo-assisted brakes. | 9th Feb 1925 | Box 106 \ 1 scan0002 | |
| Ordering new 38' type springs and resolving a design issue concerning clip widths with the supplier, Messrs Woodhead. | 9th Feb 1925 | Box 106 \ 1 scan0003 | |
| The design and quality of a Registered Rebound Clip for a 20 HP Chassis, supplied by Woodheads. | 16th Feb 1925 | Box 106 \ 1 scan0004 | |
| Dimensional suitability of a Woodhead type front spring clip. | 17th Feb 1925 | Box 106 \ 1 scan0005 | |
| Letter regarding proposals from Thos. Firth & Sons for new front springs F.53332 for the 20 HP Chassis in India. | 17th Feb 1925 | Box 106 \ 1 scan0006 | |
| Letter from Thos. Firth & Sons regarding proposals and modifications for 20 HP Front Springs. | 16th Feb 1925 | Box 106 \ 1 scan0007 | |
| Specification sheet for a Goshawk Front Spring, Drawing No. 53332. | 23th Feb 1925 | Box 106 \ 1 scan0008 | |
| The specifications and ordering of new front springs for the 20 HP Chassis for India. | 23th Feb 1925 | Box 106 \ 1 scan0009 | |
| Letter discussing a sample clip for a 20 HP chassis for India, quoting a supplier regarding its specifications. | 3rd Mar 1925 | Box 106 \ 1 scan0010 | |
| Forwarding letters from suppliers regarding changes to the clip plate end and spring camber for the 20 HP Chassis. | 6th Mar 1925 | Box 106 \ 1 scan0011 | |
| Testing, failure, and return of front springs for a 20 HP Chassis destined for India. | 2nd Apr 1925 | Box 106 \ 1 scan0012 | |
| On the failure of 20 HP front springs and analysis of replacements for India. | 3rd Apr 1925 | Box 106 \ 1 scan0013 | |
| Secret memo discussing the difficulty and potential solutions for front spring failures on the 20 HP 'India' chassis. | 6th Apr 1925 | Box 106 \ 1 scan0014 | |
| Correspondence regarding the examination of broken front springs for a 20 HP Chassis (India) by Firth & Sons Ltd. | 27th Apr 1925 | Box 106 \ 1 scan0015 | |
| Specifications and design differences of 'India' front springs sent to the Experimental Department. | 30th Apr 1925 | Box 106 \ 1 scan0016 | |
| Testing of front springs for a 20 HP Chassis for India, and arranging a meeting with the supplier. | 11th May 1925 | Box 106 \ 1 scan0017 | |
| Specifications for ordering 'India' F.W.B. front springs. | 15th May 1925 | Box 106 \ 1 scan0018 | |
| Experimental modification to the front spring buffers to reduce hitting. | 15th May 1925 | Box 106 \ 1 scan0019 | |
| Specifications for stiffer front road springs for the 'India' chassis. | 18th May 1925 | Box 106 \ 1 scan0020 | |
| Bumping test for an 'India' Rear Axle with a wider track. | 5th May 1925 | Box 106 \ 1 scan0021 | |
| The bump test of a 20 HP 'India' chassis. | 22th May 1925 | Box 106 \ 1 scan0022 | |
| Failures of chassis cross members and spring stops during endurance testing. | 1st May 1925 | Box 106 \ 1 scan0023 | |
| Tabulating the life and failure characteristics of vehicle leaf springs. | 22th May 1925 | Box 106 \ 1 scan0024 | |
| Increased front spring stiffness and camber to resolve steering issues for cars in India. | 6th May 1925 | Box 106 \ 1 scan0025 | |
| Broken top leaf on a near-side front spring during tests of a 20 HP car in France. | 1st Jun 1925 | Box 106 \ 1 scan0026 | |
| Specifications and delivery of 'India' plus F.W.B. front springs. | 10th Jun 1925 | Box 106 \ 1 scan0027 | |
| The delivery of front springs and gaiters for the 20 HP chassis. | 10th Jun 1925 | Box 106 \ 1 scan0028 | |
| Requesting further particulars on a car spring and detailing stress improvements on new springs. | 10th Jun 1925 | Box 106 \ 1 scan0029 | |
| Secret memo detailing the weight and spring specifications for a car designated 'INDIA'. | 12th Jun 1925 | Box 106 \ 1 scan0030 | |
| Secret memo confirming modification instructions for the 'INDIA' chassis front axle and brakes are complete. | 20th Jun 1925 | Box 106 \ 1 scan0031 | |
| Chassis improvements, including stronger front springs and modifications to the front wheel brakes. | 20th Jun 1925 | Box 106 \ 1 scan0032 | |
| Gearbox design improvements, specifically concerning the double pinion and splines. | 20th Jun 1925 | Box 106 \ 1 scan0033 | |
| Continued note discussing clearances for a gate and interlock in a sliding gear mechanism. | 23th Jun 1925 | Box 106 \ 1 scan0034 | |
| Approval and modifications to the 'India' car's 4-wheel brakes and springs. | 23th Jun 1925 | Box 106 \ 1 scan0035 | |
| Secret memo regarding the preparation of a Barker limousine with a special front axle to test springs for the 'India' model. | 24th Jun 1925 | Box 106 \ 1 scan0036 | |
| Delivery of springs for a 20 HP India Chassis and a further requirement from Firth's. | 24th Jun 1925 | Box 106 \ 1 scan0037 | |
| Test results for new strong springs on two 'secret cars', suggesting a change to lessen vibrations. | 29th Jun 1925 | Box 106 \ 1 scan0038 | |
| The performance of 'India' front springs on 20 HP cars. | 1st Jul 1925 | Box 106 \ 1 scan0039 | |
| Page asking which springs are to be standardised. | 29th Jun 1925 | Box 106 \ 1 scan0040 | |
| Secret memo discussing the results of testing new, stronger springs on two cars intended for India. | 29th Jun 1925 | Box 106 \ 1 scan0041 | |
| From CJ to Hs regarding 'India' Front Springs, confirming a preference for 20% stronger springs and that output should not be stopped. | 1st Jul 1925 | Box 106 \ 1 scan0042 | |
| Bumping tests for the 20 HP chassis front end. | 7th Jul 1925 | Box 106 \ 1 scan0043 | |
| Bump test for the 20 HP 'G' Series chassis, detailing conditions and breakages. | 1st Jul 1925 | Box 106 \ 1 scan0044 | |
| Component failures and test durations for steering columns, levers, springs, and frame members. | 25th Sep 1924 | Box 106 \ 1 scan0045 | |
| Component failures during testing, with accompanying diagrams and suggestions for improvements. | 1st Jul 1925 | Box 106 \ 1 scan0046 | |
| Failures of front and rear spring clips and 'D' type dashbrackets. | 3rd Jul 1925 | Box 106 \ 1 scan0047 | |
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