| Description | Date | Identifier | |
| Official order be sent to Leonard Williams for an attached invoice. | 20th Dec 1938 | Box 127 \ 1 scan0393 | |
| Steering performance issues, including a 'tendency to wander', and arranging comparative tests with Lincoln and Panhard cars. | 21th May 1926 | Box 127 \ 2 scan0001 | |
| Proposing experimental testing of Lincoln and Panhard cars against the Phantom. | 26th May 1926 | Box 127 \ 2 scan0002 | |
| Trial run report and opinion on the Lincoln car, focusing on suspension and engine performance. | 1st May 1928 | Box 127 \ 2 scan0003 | |
| Page 2 of a vehicle comparison report detailing steering, gears, brakes, and body performance. | 1st May 1928 | Box 127 \ 2 scan0004 | |
| Extended trial run and performance review of a Lincoln Car. | 27th Aug 1929 | Box 127 \ 2 scan0005 | |
| The performance and engine characteristics of a Cadillac or LaSalle vehicle. | 27th Aug 1929 | Box 127 \ 2 scan0006 | |
| Road test report analysing engine performance, vibration, and noise characteristics on the road. | 27th Aug 1929 | Box 127 \ 2 scan0007 | |
| Technical comparison of competitor engines and a list of purchase prices for various car models. | 16th Oct 1929 | Box 127 \ 2 scan0008 | |
| Analysis of competitor 8-cylinder vee engines, noting their unimpressive performance and issues with torsional vibration. | 16th Oct 1929 | Box 127 \ 2 scan0009 | |
| Acceleration test results for a Lincoln V-12 Town Sedan with standard and high gear axle ratios. | 7th Jun 1932 | Box 127 \ 2 scan0010 | |
| Cover memo for a report on a run taken in a Lincoln car. | 23th Jun 1933 | Box 127 \ 2 scan0011 | |
| Test run report on a Lincoln Car, comparing its performance and features to the Rolls-Royce Phantom II. | 20th Jun 1933 | Box 127 \ 2 scan0012 | |
| Test drive report detailing observations on a vehicle's suspension, steering, gearbox, and other features, with comparisons to other cars. | 31th Aug 1933 | Box 127 \ 2 scan0013 | |
| Arranging a parallel car demonstration with a Lincoln for Ford's manager and chief engineers from Detroit. | 31th Aug 1933 | Box 127 \ 2 scan0014 | |
| Short thank you note from Rm to PN regarding a meeting with Mackintosh and a day at Dagenham. | 2nd Sep 1933 | Box 127 \ 2 scan0015 | |
| Thank-you letter regarding a vehicle demonstration and test drive at Dagenham. | 2nd Sep 1933 | Box 127 \ 2 scan0016 | |
| Letter from Ford Motor Company to Mr. Robotham regarding the sale of a Lincoln demonstration car. | 4th Sep 1933 | Box 127 \ 2 scan0017 | |
| Letter from the Experimental Department to The Ford Motor Co. Ltd. regarding a service manual for a Lincoln. | 5th Sep 1933 | Box 127 \ 2 scan0018 | |
| Visit to Dagenham regarding Textolite timing gears and other production processes. | 6th Sep 1933 | Box 127 \ 2 scan0019 | |
| Performance comparison and assessment of a Lincoln car against a Cadillac and the company's own model. | 6th Sep 1933 | Box 127 \ 2 scan0020 | |
| Lincoln 12 Cylinder car service manual and a technical argument about the engine's big end construction. | 7th Sep 1933 | Box 127 \ 2 scan0021 | |
| Letter from Ford Motor Company's Lincoln Car Department enclosing a confidential Lincoln Service Manual. | 6th Sep 1933 | Box 127 \ 2 scan0022 | |
| Letter to Ford Motor Co. regarding the return of a Lincoln Service Manual and collection of a V-8 drop head coupe. | 8th Sep 1933 | Box 127 \ 2 scan0023 | |
| Technical data sheet for a Lincoln 12 Cylinder engine. | 8th Sep 1933 | Box 127 \ 2 scan0024 | |
| Specification sheet detailing engine speeds, capacities, gear ratios, and other vehicle characteristics. | 8th May 1937 | Box 127 \ 2 scan0025 | |
| Technical data sheet for a Lincoln V-8 engine. | 8th May 1937 | Box 127 \ 2 scan0026 | |
| Specification sheet detailing capacities, gear ratios, dimensions, and weights of vehicle components. | 8th May 1937 | Box 127 \ 2 scan0027 | |
| Oil specifications for engine, transmission, and rear axle for summer and winter use. | 22th Sep 1933 | Box 127 \ 2 scan0028 | |
| Letter to Mr. Macintosh of The Ford Motor Co. regarding testing a new product and a Lincoln car. | 22th Sep 1933 | Box 127 \ 2 scan0029 | |
| Typed memo confirming an arrangement for a meeting at Lincoln Bignalls Corner. | 5th Dec 1933 | Box 127 \ 2 scan0030 | |
| Telegram arranging a meeting at Lincoln Bignalls Corner on Wednesday at noon. | 5th Dec 1933 | Box 127 \ 2 scan0031 | |
| Letter to Ford Motor Co. regarding a trial of a Lincoln car and arranging a trial of a saloon Bentley. | 6th Dec 1933 | Box 127 \ 2 scan0032 | |
| Test report on running a 12-cylinder car on 6 cylinders, comparing performance and crankshaft weights. | 12th Dec 1933 | Box 127 \ 2 scan0033 | |
| Phenomena and test results of running a 12-cylinder engine on only 6 cylinders. | 13th Dec 1933 | Box 127 \ 2 scan0034 | |
| The Lincoln car's power unit, detailing crankshaft dimensions, firing order, and bearing specifications. | 12th Feb 1934 | Box 127 \ 2 scan0035 | |
| Lincoln engine mountings, Bohn aluminum pistons, and single-plate clutches, with comparisons to English designs. | 12th Mar 1934 | Box 127 \ 2 scan0036 | |
| Technical memorandum detailing various automotive components and personal driving observations. | 12th Aug 1934 | Box 127 \ 2 scan0037 | |
| Strategic discussion about exchanging a Bentley and an analysis of competitor cars like Cadillac, Lincoln, and Chrysler. | 12th Feb 1934 | Box 127 \ 2 scan0038 | |
| Test drive of a Lincoln car, praising its 12-cylinder engine and comparing it favorably to the P.II. | 15th Jan 1934 | Box 127 \ 2 scan0039 | |
| Specifications sheet providing data for the Lincoln & Lincoln Zephyr. | 6th Apr 1937 | Box 127 \ 2 scan0040 | |
| Letter to Lincoln Cars Ltd. requesting the loan of a forked type connecting rod for a Lincoln car. | 26th Jan 1938 | Box 127 \ 2 scan0041 | |
| Letter from Lincoln Cars Limited offering to loan forked type connecting rods. | 27th Jan 1938 | Box 127 \ 2 scan0042 | |
| Acquisition of a Lincoln Forked Connecting Rod for cost reduction analysis on the Phantom III model. | 4th Feb 1938 | Box 127 \ 2 scan0043 | |
| Acquisition of a forked rod from Lincoln Cars Ltd for onward transit to Derby. | 9th Feb 1938 | Box 127 \ 2 scan0044 | |
| Specification sheet detailing the weights of a Lincoln Connecting Rod assembly. | 11th Feb 1938 | Box 127 \ 2 scan0045 | |
| Photograph showing two connecting rod assemblies for a 12-cylinder Lincoln engine. | 11th Feb 1938 | Box 127 \ 2 scan0046 | |
| Photograph of a connecting rod assembly for a 12-cylinder Lincoln engine. | 21th Feb 1938 | Box 127 \ 2 scan0047 | |
| Letter to Lincoln Cars Limited thanking them for the loan of a connecting rod. | 21th Feb 1938 | Box 127 \ 2 scan0048 | |
| Invoice from Lincoln Cars Ltd. for three parts supplied on loan. | 23th Feb 1938 | Box 127 \ 2 scan0049 | |
| Letter from Lincoln Cars Limited regarding parts from invoice No.A.3977 for an employee of Bentley Motors Ltd. | 21th Feb 1938 | Box 127 \ 2 scan0050 | |
| Letter from Lincoln Cars Limited declining a request for a Lincoln-Zephyr for full throttle testing. | 22th Jun 1938 | Box 127 \ 2 scan0051 | |
| Comparing the performance and specifications of a Phantom III model against a Lincoln Zephyr, based on an owner's trial run. | 16th Jun 1938 | Box 127 \ 2 scan0052 | |
| Acquisition of a Lincoln Zephyr car for trial purposes in exchange for an experimental car. | 23th Jun 1938 | Box 127 \ 2 scan0053 | |
| Arrangements for a trial of a Lincoln Zephyr car. | 30th Jun 1938 | Box 127 \ 2 scan0054 | |
| The difficulty in obtaining a Lincoln Zephyr car for testing. | 6th Jul 1938 | Box 127 \ 2 scan0055 | |
| The search for a secondhand Lincoln Zephyr. | 7th Dec 1938 | Box 127 \ 2 scan0056 | |
| Letter from Ethyl Export Corporation arranging the loan of a Lincoln-Zephyr car for performance testing. | 7th Dec 1938 | Box 127 \ 2 scan0057 | |
| Providing detailed specifications for a 1938 Lincoln Zephyr 4-door saloon. | 20th Dec 1938 | Box 127 \ 2 scan0058 | |
| Specifications for a fully counterbalanced crankshaft with a vibration damper. | 20th Dec 1938 | Box 127 \ 2 scan0059 | |
| Windage calculation report for a 1938 Lincoln Zephyr. | 20th Dec 1938 | Box 127 \ 2 scan0060 | |
| Blueprint graph showing the acceleration curve for a Lincoln Zephyr. | 15th Dec 1938 | Box 127 \ 2 scan0061 | |
| Performance graph showing Brake Horsepower (BHP) curves versus RPM for a Lincoln Zephyr. | 14th Dec 1938 | Box 127 \ 2 scan0062 | |
| Order for a Lincoln Zephyr crankshaft and a starting motor clutch. | 8th Aug 1939 | Box 127 \ 2 scan0063 | |
| Letter to Delco-Remy & Hyatt Ltd. concerning an order for a Lincoln crankshaft, a starting motor clutch, and an inquiry about a High Pressure Indicator. | 9th Aug 1939 | Box 127 \ 2 scan0064 | |
| The oil retaining discs used in the Lincoln Zephyr crankshaft and a proposal to incorporate the scheme for cost savings. | 22th Aug 1939 | Box 127 \ 2 scan0065 | |
| Specification limits for the chemical analysis and hardness of a cast aluminium alloy timing gear used on the Lincoln Zephyr. | 9th Oct 1940 | Box 127 \ 2 scan0066 | |
| Specification sheet for the chemical analysis and hardness of cast aluminium alloy timing gears used on the Lincoln Zephyr. | 9th Oct 1940 | Box 127 \ 2 scan0067 | |
| Aluminium camshaft gear model from a Lincoln Zephyr sent to the Pattern Shop. | 24th Oct 1940 | Box 127 \ 2 scan0068 | |
| Advising a colleague on who has the parts they enquired about. | 11th Jan 1939 | Box 127 \ 2 scan0069 | |
| Comparative analysis of Packard suspension versus the Wraith suspension, focusing on weight and performance. | 31th Mar 1939 | Box 127 \ 2 scan0070 | |
| Technical discussion on rubber joints, suspension, engine position and cost savings, with comparisons to the Wraith and B.V. models. | 31th Mar 1939 | Box 127 \ 2 scan0071 | |
| Summary of the current position on the rationalised suspension, noting future plans for lightening, cheapening, and improving departmental communication. | 31th Mar 1939 | Box 127 \ 2 scan0072 | |
| Comparing the front suspension weights of the Bentley V and Wraith III, with a detailed breakdown for the Bentley V. | 9th Mar 1939 | Box 127 \ 2 scan0073 | |
| Information providing the rating specifications for 'silentbloc' bushes. | 3rd Apr 1939 | Box 127 \ 2 scan0074 | |
| Road test report for the 32.5 HP Packard Super Eight Saloon from The Autocar magazine. | 5th May 1939 | Box 127 \ 2 scan0075 | |
| The inadvertent disclosure of Rover's cost figures and a reminder to maintain confidentiality. | 21th Dec 1937 | Box 127 \ 2 scan0076 | |
| Letter from The Rover Company to Rolls-Royce concerning the continued use of Avon tyres. | 3rd Jan 1939 | Box 127 \ 2 scan0077 | |
| Letter to Capt. S.B. Wilks of The Rover Company Ltd. regarding the finalisation of Avon tyres. | 4th Jan 1939 | Box 127 \ 2 scan0078 | |
| Letter from The Rover Company Ltd. inquiring about the potential supply of gearboxes. | 16th Jan 1939 | Box 127 \ 2 scan0079 | |
| Letter to S.B. Wilks of The Rover Company Ltd. regarding a gearbox communication. | 19th Jan 1939 | Box 127 \ 2 scan0080 | |
| Letter to Capt. Wilks of The Rover Company Ltd. declining to manufacture gearboxes due to increased Air Ministry requirements. | 26th Jan 1939 | Box 127 \ 2 scan0081 | |
| Letter to The Rover Company Ltd. inquiring about piston issues and cylinder bore wear measurement. | 26th Jan 1939 | Box 127 \ 2 scan0082 | |
| Letter from The Rover Company Ltd. asking for information about two job applicants from Rolls-Royce. | 30th Mar 1939 | Box 127 \ 2 scan0083 | |
| Private letter to M. Wilks of The Rover Company regarding two employees, D. Bastow and A. Mitchell. | 4th Apr 1939 | Box 127 \ 2 scan0084 | |
| Letter from The Rover Company Ltd to W.A. Robotham of Rolls-Royce, confirming a meeting for lunch. | 5th Apr 1939 | Box 127 \ 2 scan0085 | |
| Letter to M.C. Wilks of The Rover Company Ltd. arranging a meeting. | 12th Apr 1939 | Box 127 \ 2 scan0086 | |
| Letter to M.C. Wilks of The Rover Company Ltd. confirming a meeting on April 18th. | 14th Apr 1939 | Box 127 \ 2 scan0087 | |
| Loan of a Bentley air silencer to the Rover Co. Ltd. | 19th Apr 1939 | Box 127 \ 2 scan0088 | |
| Letter to W.R. Boyle of The Rover Company Ltd. regarding the sending of a Bentley air silencer. | 19th Apr 1939 | Box 127 \ 2 scan0089 | |
| Letter to The Rover Company Ltd. discussing an engine's power curve and performance ambitions. | 21th Apr 1939 | Box 127 \ 2 scan0090 | |
| Performance graph for a B.60 No3 engine with open exhaust, detailing power and BMEP curves against RPM. | 21th Apr 1939 | Box 127 \ 2 scan0091 | |
| List of technical queries regarding various automotive components, prepared for a visit with Rover. | 21th Apr 1939 | Box 127 \ 2 scan0092 | |
| Letter from The Rover Company confirming receipt of an air silencer and enclosing drawings for a back axle and axle shaft. | 21th Apr 1939 | Box 127 \ 2 scan0093 | |
| Data sheet with weights, torques, and ratios for The Rover Company's 10.HP and 20.HP models. | 20th Apr 1939 | Box 127 \ 2 scan0094 | |
| Letter from The Rover Company discussing engine cam design, the Buick chassis frame, and a postponed meeting. | 22th Apr 1939 | Box 127 \ 2 scan0095 | |
| Letter to The Rover Company Ltd. regarding a Rover axle drawing and a special wheel bearing. | 24th Apr 1939 | Box 127 \ 2 scan0096 | |
| Letter to Rover discussing a Buick car issue and providing inlet cam specifications. | 26th Apr 1939 | Box 127 \ 2 scan0097 | |
| Request to The Rover Company for drawings of 16 HP saloons regarding body space on a Bentley. | 28th Apr 1939 | Box 127 \ 2 scan0098 | |
| Letter from The Rover Company enclosing a 1939 car data book, with a handwritten request for a specific vehicle dimension. | 29th Apr 1939 | Box 127 \ 2 scan0099 | |
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