| Description | Date | Identifier | |
| Letter from British Belting & Asbestos Ltd. confirming the dispatch of 'Mintex' servo linings with part numbers and dimensions. | 21th Aug 1934 | Box 141 \ 3 scan0297 | |
| Order for servo linings made of 'Mintex Lamina' material and a request to place a covering order with British Belting & Asbestos Ltd. | 27th Aug 1934 | Box 141 \ 3 scan0298 | |
| Letter from Ferodo regarding the dispatch and specifications of Ferodo S.4947 brake servo linings. | 30th Aug 1934 | Box 141 \ 3 scan0299 | |
| Covering order to pay an invoice from Ferodo Ltd. for flat liners. | 6th Sep 1934 | Box 141 \ 3 scan0300 | |
| Requesting an order to be passed to Messrs. Ferodo Ltd. for two Ferobestos Flat Liners. | 8th Sep 1934 | Box 141 \ 3 scan0301 | |
| Confirming a telephone order for one dozen discs from Ferodos and requesting a covering order. | 13th Sep 1934 | Box 141 \ 3 scan0302 | |
| Brief typed memo concerning the status of an order for 12 discs. | 21th Sep 1934 | Box 141 \ 3 scan0303 | |
| Experiments on cast-iron servo linings, proposing the addition of grooves. | 28th Sep 1934 | Box 141 \ 3 scan0304 | |
| Letter from British Belting & Asbestos Ltd confirming the handing over of friction materials (brake shoes, clutch discs) for testing. | 6th Oct 1934 | Box 141 \ 3 scan0305 | |
| Inertia machine test chart for a rubber moulded disc brake lining, showing coefficient of friction and temperature against number of stops. | 10th May 1934 | Box 141 \ 3 scan0306 | |
| Letter from Ferodo Limited concerning the supply of servo motor clutch discs for trial. | 6th Oct 1934 | Box 141 \ 3 scan0307 | |
| Letter from Ferodo Limited regarding the supply of three experimental sets of brake servo clutch linings. | 12th Oct 1934 | Box 141 \ 3 scan0308 | |
| Letter from Ferodo Limited regarding amended brake liners for Bentley trials. | 17th Oct 1934 | Box 141 \ 3 scan0309 | |
| Letter to Ferodo Limited regarding friction strips for leaf springs and testing of new linings. | 19th Oct 1934 | Box 141 \ 3 scan0310 | |
| Letter from supplier Ferodo Limited regarding an experimental order for spring interleaving material. | 23th Oct 1934 | Box 141 \ 3 scan0311 | |
| Letter from British Belting & Asbestos Ltd. regarding experiments on servo-motor discs and arranging a meeting. | 23th Oct 1934 | Box 141 \ 3 scan0312 | |
| The mechanical efficiency of a Bentley 25 HP servo motor and its linings. | 26th Oct 1934 | Box 141 \ 3 scan0313 | |
| Servo efficiency tests, analyzing the effect of temperature on the coefficient of friction in brake linings. | 26th Oct 1934 | Box 141 \ 3 scan0314 | |
| Brake lining performance, servo characteristics, and mechanical efficiency tests. | 26th Oct 1934 | Box 141 \ 3 scan0315 | |
| Test results table for various servo linings, comparing performance metrics and remarks. | 26th Oct 1934 | Box 141 \ 3 scan0316 | |
| Comparative table of different servo lining materials and their performance characteristics. | 26th Oct 1934 | Box 141 \ 3 scan0317 | |
| Letter to Messrs. Ferodo Limited regarding the unsatisfactory characteristics of supplied linings. | 27th Oct 1934 | Box 141 \ 3 scan0318 | |
| Letter from Ferodo Limited's Chief Chemist regarding a meeting and the performance of VM.30 discs. | 29th Oct 1934 | Box 141 \ 3 scan0319 | |
| Letter from Ferodo discussing the micro-structure of brake drum materials and production delays. | 2nd Nov 1934 | Box 141 \ 3 scan0320 | |
| Cover letter to Ferodo Limited regarding a chemist's remarks and a requested micro-section. | 6th Nov 1934 | Box 141 \ 3 scan0321 | |
| Micro-examination report on a worn Lake and Elliot brake drum after 10,000 miles. | 6th Nov 1934 | Box 141 \ 3 scan0322 | |
| Letter from Ferodo Limited regarding the dispatch of four VM.30 discs for testing and evaluation. | 7th Nov 1934 | Box 141 \ 3 scan0323 | |
| Letter from Ferodo Limited discussing a faulty brake drum and recommending new material composition. | 8th Nov 1934 | Box 141 \ 3 scan0324 | |
| Letter from Ferodo Limited concerning the metallurgical analysis and comparison of Millenite brake drums. | 8th Nov 1934 | Box 141 \ 3 scan0325 | |
| Letter from Ferodo Limited concerning a laboratory report on a faulty drum and returning photomicrographs. | 8th Nov 1934 | Box 141 \ 3 scan0326 | |
| Ideal chemical composition and manufacturing method for brake drum material. | 8th Nov 1934 | Box 141 \ 3 scan0327 | |
| Letter to Ferodo Ltd. concerning the development, materials, and testing of brake drums. | 12th Nov 1934 | Box 141 \ 3 scan0328 | |
| Letter from British Belting & Asbestos Ltd confirming the despatch of various servo friction discs. | 12th Nov 1934 | Box 141 \ 3 scan0329 | |
| Letter from Ferodo Limited discussing photomicrographs, disc slotting, and Servo Disc friction characteristics. | 15th Nov 1934 | Box 141 \ 3 scan0330 | |
| Sending out new servo linings to be fitted to a car for road testing, specifically to check for brake squeaks. | 23th Nov 1934 | Box 141 \ 3 scan0331 | |
| Letter from Ferodo Limited regarding photomicrographs of recommended brake drums. | 27th Nov 1934 | Box 141 \ 3 scan0332 | |
| Letter to Ferodo Limited regarding the testing of brake drums and linings. | 29th Nov 1934 | Box 141 \ 3 scan0333 | |
| Letter from Ferodo Limited regarding disappointing test results on polished VM.30 and special MZ linings, with a promise of new samples. | 30th Nov 1934 | Box 141 \ 3 scan0334 | |
| Letter from Brake Linings Limited regarding the submission of sample DURON Die Pressed Brake Linings for test purposes. | 4th Dec 1934 | Box 141 \ 3 scan0335 | |
| Letter to Ferodo Limited regarding the trial and supply of servo motor linings for a Bentley. | 7th Dec 1934 | Box 141 \ 3 scan0336 | |
| Request for specific linings and discs, with feedback on previously tested linings that were squeaking. | 7th Dec 1934 | Box 141 \ 3 scan0337 | |
| Letter detailing the test results of various servo friction disc linings from British Belting & Asbestos Ltd. | 10th Dec 1934 | Box 141 \ 3 scan0338 | |
| Letter detailing test results of various brake linings and discussing solutions for squeaking issues. | 10th Dec 1934 | Box 141 \ 3 scan0339 | |
| Request to pass a covering order for Bentley Servo Motor Linings ordered from Ferodo Ltd. | 11th Dec 1934 | Box 141 \ 3 scan0340 | |
| Letter to Ferodo Limited regarding a successful rubber lining sample. | 11th Dec 1934 | Box 141 \ 3 scan0341 | |
| Letter from Ferodo Limited concerning the manufacture of experimental splined and plain discs, and suggesting a production modification. | 12th Dec 1934 | Box 141 \ 3 scan0342 | |
| Agreeing to change the clutch lining on Bentley cars to the 20/25 HP type. | 13th Dec 1933 | Box 141 \ 3 scan0343 | |
| The testing of Duron brake linings compared to Ferodo linings. | 13th Dec 1934 | Box 141 \ 3 scan0344 | |
| Letter discussing test results and potential solutions for issues with Servo Friction Discs, including squeaking problems. | 13th Dec 1934 | Box 141 \ 3 scan0345 | |
| Letter from Ferodo Limited regarding discs for a clutch servo motor and the economics of internal versus external splines. | 20th Dec 1934 | Box 141 \ 3 scan0346 | |
| Letter from Ferodo Limited regarding a delay in despatching an order for plain and specially cut discs. | 21th Dec 1934 | Box 141 \ 3 scan0347 | |
| Investigation into ignition coil trouble causing misfiring on a Wraith experimental chassis. | 1st Oct 1937 | Box 142 \ 1 scan0001 | |
| Announcing the reorganization of the Operation Planning and Rate Fixing departments, and management changes for the Aero and Chassis divisions. | 5th Oct 1937 | Box 142 \ 1 scan0002 | |
| Confirming the engine type used by Campbell was the 1931 No. R.39. | 5th Oct 1937 | Box 142 \ 1 scan0003 | |
| The policy for making private telephone calls. | 5th Oct 1937 | Box 142 \ 1 scan0004 | |
| Confirming no staff are employed abroad for the car side of the Experimental Department. | 5th Oct 1937 | Box 142 \ 1 scan0005 | |
| Requesting printed slips to announce a change in telephone number. | 7th Oct 1937 | Box 142 \ 1 scan0006 | |
| Issues with dynamo sparking and proposing a new armature design for scheme 911. | 30th Sep 1937 | Box 142 \ 1 scan0007 | |
| Tests and conclusions for brush gear design, including bench test results comparing standard and experimental machines. | 30th Sep 1937 | Box 142 \ 1 scan0008 | |
| Comparison report of a standard machine versus an experimental machine through bench and road tests. | 30th Sep 1937 | Box 142 \ 1 scan0009 | |
| Schedule of chassis to be tested, detailing weekly output and series positions up to January 1938. | 9th Oct 1937 | Box 142 \ 1 scan0010 | |
| Photograph of four original Silver Ghost cars found at the factory, outside the 'Cat & Fiddle'. | 14th Oct 1937 | Box 142 \ 1 scan0011 | |
| Letter returning a 'libellous document' that was circulated around the factory. | 16th Oct 1937 | Box 142 \ 1 scan0012 | |
| Highlighting process and record-keeping issues within the Order Department due to direct communications with firms. | 19th Oct 1937 | Box 142 \ 1 scan0013 | |
| Inviting personnel to lunch with visitors including Mr. Bass and Major Doolittle. | 22th Oct 1937 | Box 142 \ 1 scan0014 | |
| Arranging a Ph.III car for Lord Swinton and Lord Weir's visit. | 27th Oct 1937 | Box 142 \ 1 scan0015 | |
| Experimental department report on the suitability of Lucas Regulator & Cutout Units. | 25th Oct 1937 | Box 142 \ 1 scan0016 | |
| Internal memorandum discussing the testing and performance characteristics of a Lucas Dynamo Regulator and Cutout unit. | 28th Oct 1937 | Box 142 \ 1 scan0017 | |
| Technical report discussing the design, operation, and issues with a single-stage dynamo voltage regulator. | 28th Oct 1937 | Box 142 \ 1 scan0018 | |
| Performance specifications for output current at 13.0 volts under cold and hot conditions. | 28th Oct 1937 | Box 142 \ 1 scan0019 | |
| The performance, reliability, and lifespan of regulators under cold and hot conditions. | 28th Oct 1937 | Box 142 \ 1 scan0020 | |
| The performance issues of a voltage cutout and regulator, with a summary and recommendations for modification. | 28th Oct 1937 | Box 142 \ 1 scan0021 | |
| Modifications and future plans for battery charge regulators and cutouts. | 28th Oct 1937 | Box 142 \ 1 scan0022 | |
| Confirming travel arrangements to Crewe for a specific car and driver. | 2nd Nov 1937 | Box 142 \ 1 scan0023 | |
| Announcing the appointment of Mr Allwood as Section Leader of the Experimental Design Section. | 2nd Nov 1937 | Box 142 \ 1 scan0024 | |
| Notice of staff appointment for the Section Leader of the Frame Section and the new head of the Experimental Design Section. | 2nd Nov 1937 | Box 142 \ 1 scan0025 | |
| Announcing the appointment of Mr Allwood as Section Leader of the Experimental Design Section. | 2nd Nov 1937 | Box 142 \ 1 scan0026 | |
| Request to find a photograph of a car from the 1914-1935 period for an Engineering Book of Reference. | 4th Nov 1937 | Box 142 \ 1 scan0027 | |
| Visit to the Lagonda works detailing six points of interest regarding their car's construction. | 8th Nov 1937 | Box 142 \ 1 scan0028 | |
| Sending and status of photographs. | 9th Nov 1937 | Box 142 \ 1 scan0029 | |
| Letter discussing photographs of four original Silver Ghost cars at the Cat and Fiddle. | 10th Nov 1937 | Box 142 \ 1 scan0030 | |
| Letter to Major Sullivan-Tailyour regarding a scheduling conflict for an Air Raid Demonstration. | 11th Nov 1937 | Box 142 \ 1 scan0031 | |
| Short memo regarding the names associated with an attached photograph. | 16th Nov 1937 | Box 142 \ 1 scan0032 | |
| To the pay department regarding a pay correction for two employees. | 16th Nov 1937 | Box 142 \ 1 scan0033 | |
| Letter to Captain A.W. Phillips arranging a demonstration car and declining a request for an experimental car. | 16th Nov 1937 | Box 142 \ 1 scan0034 | |
| Testing and performance of different spark plugs for the Wraith model. | 16th Nov 1937 | Box 142 \ 1 scan0035 | |
| Loan of a demonstration car to a Captain Phillips for R.A.C. trials. | 17th Nov 1937 | Box 142 \ 1 scan0036 | |
| Arranging a demonstration car for Capt. Phillips following a telephone conversation. | 17th Nov 1937 | Box 142 \ 1 scan0037 | |
| Letter from The Royal Automobile Club regarding the use of a Demonstration Bentley for the Veteran Car Run. | 18th Nov 1937 | Box 142 \ 1 scan0038 | |
| The disposal of experimental cars and the subsequent changes to providing transport facilities. | 19th Nov 1937 | Box 142 \ 1 scan0039 | |
| Providing instructions on the cost-effective duplication of memos using a Fordigraph duplicator. | 22th Nov 1937 | Box 142 \ 1 scan0040 | |
| Vague historical records of team personnel and suggestions for who might be able to help. | 22th Nov 1937 | Box 142 \ 1 scan0041 | |
| Announcing a revision to the departmental numbering system. | 24th Nov 1937 | Box 142 \ 1 scan0042 | |
| List of factory departments with their corresponding department numbers, tasks, and foremen. | 24th Nov 1937 | Box 142 \ 1 scan0043 | |
| List of various departments, their respective department numbers, and foremen or chargehands. | 24th Nov 1937 | Box 142 \ 1 scan0044 | |
| List of departments, foremen, and operational notes for No.2 Shop Machining. | 24th Nov 1937 | Box 142 \ 1 scan0045 | |
| List of factory departments, assigned foremen, and operational notes for fitting and testing. | 24th Nov 1937 | Box 142 \ 1 scan0046 | |
| List of departments with their corresponding numbers, superintendents, foremen, and remarks. | 24th Nov 1937 | Box 142 \ 1 scan0047 | |
| List of company departments with corresponding department numbers, foremen, and remarks. | 24th Nov 1937 | Box 142 \ 1 scan0048 | |
| List of indirect departments with corresponding numbers, foreman names, and remarks. | 23th Nov 1937 | Box 142 \ 1 scan0049 | |
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