| Description | Date | Identifier | |
| Letter from Borg & Beck Company Ltd to the Experimental Department discussing collaboration on clutch technology on a royalty basis. | 12th Jan 1933 | Box 128 \ 2 scan0180 | |
| Borg & Beck clutch for the 20/25 HP engine, a visit to their works, and potential patent/royalty issues. | 17th Jan 1933 | Box 128 \ 2 scan0181 | |
| Letter from Borg & Beck Company Ltd. confirming a representative's visit and discussing collaboration on clutches. | 12th Jan 1933 | Box 128 \ 2 scan0182 | |
| Letter from Borg & Beck Company Ltd. listing British patent numbers for flexible clutches. | 20th Jan 1933 | Box 128 \ 2 scan0183 | |
| The concluding page of a letter from Borg & Beck Company Limited. | 20th Jan 1933 | Box 128 \ 2 scan0184 | |
| Letter from Bendix-Perrot Brakes Ltd. proposing a meeting to discuss their perfected Clutch-Control system. | 31th Jan 1933 | Box 128 \ 2 scan0185 | |
| Letter to Bendix-Perrot Brakes Ltd. postponing work on clutch control. | 4th Feb 1933 | Box 128 \ 2 scan0186 | |
| Letter from Bendix-Perrot Brakes Ltd. regarding the delay of Bendix Clutch Control tests. | 7th Feb 1933 | Box 128 \ 2 scan0187 | |
| Letter to Mr. H. Clark of Bendix-Perrot Brakes Ltd regarding a visit to Derby. | 9th Feb 1933 | Box 128 \ 2 scan0188 | |
| Letter from Robert Barclay enclosing a blueprint for a patent clutch for gear-changing. | 13th Mar 1933 | Box 128 \ 2 scan0189 | |
| Letter declining an offer to fit a third-party clutch to their cars. | 14th Mar 1933 | Box 128 \ 2 scan0190 | |
| Letter from Pratt & Manley regarding Flywheel Starter Gear Rings and specialist welding processes for various automotive components. | 19th May 1933 | Box 128 \ 2 scan0191 | |
| The manufacturing process, advantages, and suppliers of flywheel starter gear rings. | 12th Oct 1933 | Box 128 \ 2 scan0192 | |
| Letter from Bendix Limited regarding a blueprint for clutch pedal pressures and a pamphlet on clutch control installation for a 25 HP car. | 12th Oct 1933 | Box 128 \ 2 scan0193 | |
| Title page for a document on the Bendix Automatic Clutch Control, covering operation, installation, and essential information for designers. | 12th Oct 1933 | Box 128 \ 2 scan0194 | |
| Technical notes on the operation and installation requirements of the Bendix clutch control system. | 12th Oct 1933 | Box 128 \ 2 scan0195 | |
| Technical document detailing the operation and specifications of a cylinder system related to a clutch mechanism. | 12th Oct 1933 | Box 128 \ 2 scan0196 | |
| Specifications for fixed and automatic cushion type cylinders, detailing bore, stroke, piston area, and allowable pull. | 12th Oct 1933 | Box 128 \ 2 scan0197 | |
| Example calculation for clutch pedal leverage and cylinder size for a 16 HP car. | 12th Oct 1933 | Box 128 \ 2 scan0198 | |
| Calculations and fitting instructions for cylinder lever mechanisms and vacuum pipes. | 12th Oct 1933 | Box 128 \ 2 scan0199 | |
| The layout and function of accelerator controls, including lost motion and travel adjustments. | 12th Oct 1933 | Box 128 \ 2 scan0200 | |
| Description of the operation and installation of the Pendulum Valve for clutch control. | 12th Oct 1933 | Box 128 \ 2 scan0201 | |
| Blueprint detailing the installation, movement clearances, and connections for a cylinder mechanism. | 12th Oct 1933 | Box 128 \ 2 scan0202 | |
| Diagram of an accelerator pedal linkage mechanism connecting to a carburettor throttle valve, incorporating a lost motion device. | 12th Oct 1933 | Box 128 \ 2 scan0203 | |
| Diagram of the linkage mechanism for an accelerator pedal, carburettor, and valve plunger, including a lost motion device. | 12th Oct 1933 | Box 128 \ 2 scan0204 | |
| Typical layout diagram for a Bendix clutch control system. | 13th Oct 1933 | Box 128 \ 2 scan0205 | |
| Letter to Bendix Ltd. returning a blueprint with dimensions and a drawing of the pedals for a 20/25 HP car. | 13th Oct 1933 | Box 128 \ 2 scan0206 | |
| Letter from Bendix Limited regarding work on a 25 HP car's clutch control layout. | 16th Oct 1933 | Box 128 \ 2 scan0207 | |
| Letter to Bendix Ltd. regarding the fitting of an automatic clutch control. | 17th Oct 1933 | Box 128 \ 2 scan0208 | |
| Letter from Bendix Limited confirming the sending of Blue Prints requested by Mr. Wynne. | 19th Oct 1933 | Box 128 \ 2 scan0209 | |
| Letter from Bendix Limited requesting details and drawings of several parts for a clutch control installation they are preparing. | 17th Oct 1933 | Box 128 \ 2 scan0210 | |
| Letter from the Experimental Department to Bendix Limited regarding the dispatch of five blueprints. | 18th Oct 1933 | Box 128 \ 2 scan0211 | |
| Letter from Bendix Ltd. regarding the proposed automatic clutch control for a 25 HP car. | 24th Oct 1933 | Box 128 \ 2 scan0212 | |
| Technical drawing of a hose connection elbow. | 24th Oct 1933 | Box 128 \ 2 scan0213 | |
| Letter to Bendix Ltd. regarding the unavailability of a chassis due to urgent work on an automatic clutch control. | 3rd Nov 1933 | Box 128 \ 2 scan0214 | |
| Internal request for a new spring and piston modification to fix a sluggish clutch pedal. | 16th Nov 1933 | Box 128 \ 2 scan0215 | |
| Operational lag in a vacuum-operated clutch and proposing modifications. | 17th Nov 1933 | Box 128 \ 2 scan0216 | |
| Letter from Bendix Limited regarding the return of a 25 HP car fitted with clutch control. | 9th Dec 1933 | Box 128 \ 2 scan0217 | |
| Describing the trial and advantages of a Newton Centrifugal Clutch. | 7th Feb 1934 | Box 128 \ 2 scan0218 | |
| Confirming the upcoming dispatch of three Borg & Beck clutches and an enclosed pedal recommendations sheet. | 17th Apr 1934 | Box 128 \ 2 scan0219 | |
| Pedal recommendations for a Borg & Beck clutch system. | 14th Apr 1934 | Box 128 \ 2 scan0220 | |
| Letter from Small & Parkes Ltd. requesting a report on 'Donflex' clutch discs supplied for testing. | 14th May 1934 | Box 128 \ 2 scan0221 | |
| Letter to Small & Parkes Ltd. regarding testing a replacement 'Donflex' clutch centre. | 23th May 1934 | Box 128 \ 2 scan0222 | |
| The specifications for a 12-inch diameter clutch with dampered sprung drive. | 12th Jun 1934 | Box 128 \ 2 scan0223 | |
| Visits to Morris and Rover to investigate clutch linings and flexible engine mountings. | 12th Jun 1934 | Box 128 \ 2 scan0224 | |
| Visit to an experimental shop reviewing 1935 cars, transmissions, bodywork, and a Rover car clutch operation. | 14th Jun 1934 | Box 128 \ 2 scan0225 | |
| List of specifications and particulars for a Morris cork clutch. | 14th Jun 1934 | Box 128 \ 2 scan0226 | |
| Advertisement for Alvis cars from 'The Autocar' magazine, highlighting performance and quietness. | 2nd Dec 1938 | Box 128 \ 3 scan0001 | |
| Magazine advertisement page featuring S.U. Carburetters and Exide batteries. | 2nd Dec 1938 | Box 128 \ 3 scan0002 | |
| Letter to M.G. Car Company regarding bearing alloys and a potential visit to the Works. | 2nd Dec 1938 | Box 128 \ 3 scan0003 | |
| Letter from The MG Car Company Ltd discussing a Lagonda car and bearings for Gardner's machine. | 5th Dec 1938 | Box 128 \ 3 scan0004 | |
| Letter to C. Kimber of M.G. Car Company discussing car bearings, Bentley owners, the Lagonda, and competition. | 8th Dec 1938 | Box 128 \ 3 scan0005 | |
| Letter from The M.G. Car Company Ltd acknowledging receipt of correspondence. | 9th Dec 1938 | Box 128 \ 3 scan0006 | |
| Article from 'The Autocar' magazine describing a road trip over the High Alps to the Riviera in a 12-cylinder Lagonda. | 16th Dec 1938 | Box 128 \ 3 scan0007 | |
| Page from The Autocar magazine discussing new automotive features, including a 'slamless' door lock, a wax-pellet thermostat, and a non-detachable fuel filler cap. | 16th Dec 1938 | Box 128 \ 3 scan0008 | |
| Article from 'The Autocar' magazine describing a road trip through the French Alps in a Lagonda car. | 16th Dec 1938 | Box 128 \ 3 scan0009 | |
| Photographic print from 'The Autocar' magazine showing a convertible car overlooking a mountainous landscape. | 16th Dec 1938 | Box 128 \ 3 scan0010 | |
| Article from 'The Autocar' magazine detailing a motoring holiday through the French Alps. | 16th Dec 1938 | Box 128 \ 3 scan0011 | |
| Article from 'The Autocar' magazine offering Christmas gift ideas for motorists from a woman's perspective. | 16th Dec 1938 | Box 128 \ 3 scan0012 | |
| Request to order two Hillman 'Minx' complete sun visors for use on an experimental car. | 28th Dec 1938 | Box 128 \ 3 scan0013 | |
| Letter to Ethyl Export Corporation discussing track resistance and camshaft closing velocities. | 28th Dec 1938 | Box 128 \ 3 scan0014 | |
| Letter from Ethyl Export Corporation acknowledging receipt of investigation particulars on track resistance of cars. | 30th Dec 1938 | Box 128 \ 3 scan0015 | |
| Clarifying the official status of a Lagonda speed event at Brooklands. | 9th Feb 1939 | Box 128 \ 3 scan0016 | |
| Article from 'The Motor' magazine detailing a 248 m.p.h. land speed record on the Dessau Autobahn, with comparisons to other record-breaking cars. | 14th Feb 1939 | Box 128 \ 3 scan0017 | |
| Article from 'The Motor' magazine advocating for oil-engined Grand Prix racing to drive innovation in high-efficiency engines. | 14th Feb 1939 | Box 128 \ 3 scan0018 | |
| 4-cylinder versus 6-cylinder engines with specifications for several car models. | 13th Mar 1939 | Box 128 \ 3 scan0019 | |
| From Rm to W/S. Bly requesting to test drive a 4-cylinder Riley and a Wyllis. | 14th Mar 1939 | Box 128 \ 3 scan0020 | |
| Message confirming an arrangement to try the Wyllis vehicle at Bignall's Corner. | 15th Mar 1939 | Box 128 \ 3 scan0021 | |
| Availability of a 16 HP Riley Saloon and a Willys motor car. | 15th Mar 1939 | Box 128 \ 3 scan0022 | |
| Detailed overview of the Studebaker 'Champion' model, including engine specifications, features, and pricing from an automotive publication. | 1st Apr 1939 | Box 128 \ 3 scan0023 | |
| Article from 'Automotive Industries' detailing the specifications of the Studebaker Champion coupe and a water pump section. | 1st Apr 1939 | Box 128 \ 3 scan0024 | |
| Detailed description of the New Studebaker Champion engine and chassis components. | 1st Apr 1939 | Box 128 \ 3 scan0025 | |
| Technical article detailing the engine, steering, suspension, and braking systems of the new Studebaker Champion. | 1st Apr 1939 | Box 128 \ 3 scan0026 | |
| The new Studebaker Champion's features and the advanced tooling used for its production. | 1st Apr 1939 | Box 128 \ 3 scan0027 | |
| Digest of recent developments and techniques in automotive production and engineering. | 8th Apr 1939 | Box 128 \ 3 scan0028 | |
| Page from Automotive Industries magazine detailing the 'mono-construction' process of the Morris Ten-Four car body and underframe. | 8th Apr 1939 | Box 128 \ 3 scan0029 | |
| Technical description of the body assembly process for a 'Chassisless' Morris Sedan. | 8th Apr 1939 | Box 128 \ 3 scan0030 | |
| Page from a journal describing the 'chassisless' construction of the Morris Ten-Four and a Vickers hydraulic brake booster. | 8th Apr 1939 | Box 128 \ 3 scan0031 | |
| 'Autocar' magazine road test of the 17 HP Frazer Nash-B.M.W. Type 327 Cabriolet. | 14th Apr 1939 | Box 128 \ 3 scan0032 | |
| Road test report for a Frazer Nash-B.M.W. Type 327 Cabriolet from 'The Autocar' magazine. | 14th Apr 1939 | Box 128 \ 3 scan0033 | |
| Article discussing a patented rear-engined, frameless passenger car with a two-stroke radial engine. | 22th Apr 1939 | Box 128 \ 3 scan0034 | |
| Page from 'Automotive Industries' magazine featuring news on Japanese auto plans, new tire technology, Chevrolet sales, and an industry event calendar. | 22th Apr 1939 | Box 128 \ 3 scan0035 | |
| Article detailing eight patents assigned to General Motors Corp. for passenger car induction and cooling systems. | 22th Apr 1939 | Box 128 \ 3 scan0036 | |
| Page from an automotive journal detailing a GM rear-engined design, with illustrations of the transmission, clutch, and powerplant mounting. | 22th Apr 1939 | Box 128 \ 3 scan0037 | |
| Technical article from 'Automotive Industries' detailing the design of a GM rear-engined car's cone clutch, transmission, and shifting mechanisms. | 22th Apr 1939 | Box 128 \ 3 scan0038 | |
| Article on automotive and aircraft research being conducted at New York University. | 22th Apr 1939 | Box 128 \ 3 scan0039 | |
| The Autocar road test of a 37 HP 4.3-Litre Twelve-Cylinder Atalanta Saloon. | 28th Apr 1939 | Box 128 \ 3 scan0040 | |
| Road test report from 'The Autocar' magazine for the Atalanta vehicle, including diagrams and performance review. | 28th Apr 1939 | Box 128 \ 3 scan0041 | |
| Letter to the Studebaker Corporation requesting a specific crankshaft damper. | 18th May 1939 | Box 128 \ 3 scan0042 | |
| Letter from Studebaker Distributors Ltd. regarding the inability to supply a crank shaft damper from stock. | 19th May 1939 | Box 128 \ 3 scan0043 | |
| Letter to Studebaker Distributors Limited regarding the inability to carry out an experiment due to lack of time. | 22th May 1939 | Box 128 \ 3 scan0044 | |
| Letter enclosing photos of a Peugeot, discussing its features and a planned visit to Derby. | 12th Jun 1939 | Box 128 \ 3 scan0045 | |
| Page with four photographs of a streamlined sports car, registration number EYU 9, at a race track. | 13th Jun 1939 | Box 128 \ 3 scan0046 | |
| Secret memo discussing pictures of a Peugeot and a new Bentley car with a big engine. | 13th Jun 1939 | Box 128 \ 3 scan0047 | |
| Testing a 4-cylinder 2½-litre Riley engine and a proposal to develop a similar engine for the Ripplet model. | 13th Jun 1939 | Box 128 \ 3 scan0048 | |
| Page from an automotive industry publication discussing tire pricing, sales records, and new passenger car registrations. | 15th May 1939 | Box 128 \ 3 scan0049 | |
| Newsletter page from 'Automotive Industries' covering various automotive and aviation industry news. | 15th May 1939 | Box 128 \ 3 scan0050 | |
| Article from 'The Motor' magazine about the Lagonda V12 for the Le Mans race. | 13th Jun 1939 | Box 128 \ 3 scan0051 | |
| Magazine article about streamlined open and closed racing cars for the Le Mans 24-hour race. | 13th Jun 1939 | Box 128 \ 3 scan0052 | |
| Article from 'The Motor' magazine analysing a Lagonda race car, its specifications, and race prospects. | 13th Jun 1939 | Box 128 \ 3 scan0053 | |
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