| Description | Date | Identifier | |
| Attempt to re-angle front steering pivots and alter steering rod ends. | 29th Mar 1912 | Box 4 \ 7 07-page19 | |
| Requesting the repair of a burnt-out dual ignition coil and switch for an 'L' car. | 29th Mar 1912 | Box 4 \ 7 07-page20 | |
| To Mr. Royce regarding the inspection of a Lanchester epicyclic gear. | 15th Apr 1912 | Box 4 \ 7 07-page21 | |
| The particulars of Lanchester rear springs. | 24th Jun 1912 | Box 4 \ 7 07-page22 | |
| Requesting measurements for the body room of a Lanchester car, X441. | 24th Jul 1912 | Box 4 \ 7 07-page23 | |
| And numbers on the reverse of a document or photograph. | 24th Jul 1912 | Box 4 \ 7 07-page24 | |
| Faint pencil sketch of a mechanical component, possibly a valve, with numbered callouts. | 24th Jul 1912 | Box 4 \ 7 07-page25 | |
| Faint pencil sketch with handwritten annotations and numbers. | 27th Jul 1912 | Box 4 \ 7 07-page26 | |
| Departmental memo with a diagram providing requested Lanchester measurements. | 27th Jul 1912 | Box 4 \ 7 07-page27 | |
| Comparing body room measurements between a Lanchester and another vehicle. | 26th Mar 1912 | Box 4 \ 7 07-page28 | |
| Request for the return of a Lanchester epicyclic gear for experiments. | 27th Sep 1912 | Box 4 \ 7 07-page29 | |
| Charges and work estimation for the Lanchester Experimental Car. | 7th Jan 1915 | Box 4 \ 7 07-page30 | |
| The camber of Lanchester springs, referencing the Automobile Engineer Year Book 1913. | 6th Aug 1913 | Box 4 \ 7 07-page31 | |
| Tempering valve springs in an oil bath and the effects on engine performance. | 6th Aug 1913 | Box 4 \ 7 07-page32 | |
| Instructions regarding the fitting of cleaned and revised rear springs. | 13th Nov 1923 | Box 4 \ 7 07-page33 | |
| Hydraulic shock dampers, discussing a broken link and comparing designs with Lanchester patents. | 1st Mar 1926 | Box 4 \ 7 07-page34 | |
| Performance and handling review of a 20 HP Sunbeam car. | 12th Nov 1923 | Box 4 \ 7 07-page35 | |
| Performance and handling review of a 20 HP Lanchester car. | 12th Nov 1923 | Box 4 \ 7 07-page36 | |
| Page 2 of a vehicle test report evaluating brakes, steering, gearbox, and suspension. | 27th Jan 1926 | Box 4 \ 7 07-page37 | |
| Comparative analysis of suspension spring characteristics between the New Phantom, 20 HP, and Lanchester models. | 27th Jan 1926 | Box 4 \ 7 07-page38 | |
| Comparison of suspension characteristics and damping between the New Phantom and 20 HP models. | 27th Jan 1926 | Box 4 \ 7 07-page39 | |
| Speed table for a chassis on top gear, showing miles per hour and corresponding revolutions per minute. | 29th Nov 1915 | Box 4 \ 8 08-page01 | |
| Car demonstration for Mr. Stephen Cliff in Leeds, which was hampered by black fog. | 28th Oct 1912 | Box 4 \ 8 08-page02 | |
| Departmental memo discussing a potential customer, Mr. Cliff, and comparing vehicle speed with a competitor, Napier. | 28th Oct 1912 | Box 4 \ 8 08-page03 | |
| Departmental memo discussing a customer's feedback on road performance and the negative impact of an agent's mis-statements. | 29th Oct 1912 | Box 4 \ 8 08-page04 | |
| Departmental memo discussing expected road speeds and actual test results on the Harrogate to Leeds and Newmarket roads. | 26th Oct 1912 | Box 4 \ 8 08-page05 | |
| Table of vehicle speeds in MPH and corresponding gear ratio calculations for different bevel settings. | 20th May 1913 | Box 4 \ 8 08-page06 | |
| Query to confirm vehicle specifications for a potential Spanish client intending to purchase three chassis. | 20th May 1913 | Box 4 \ 8 08-page07 | |
| Internal inquiry regarding the top speed of the latest car model for prospective customers. | 22th May 1913 | Box 4 \ 8 08-page08 | |
| Departmental memo forwarding a query from Paris regarding the speed of cars, with a handwritten note about Mr. Royce's performance. | 22th May 1913 | Box 4 \ 8 08-page09 | |
| Top speed capabilities of the latest car model with a higher radiator and 4-speed gearbox. | 28th May 1913 | Box 4 \ 8 08-page10 | |
| Responding to a query about the maximum speed of cars and the effect of the 4-speed gearbox. | 26th May 1913 | Box 4 \ 8 08-page11 | |
| Table of ratios and speeds for a 40/50 HP chassis with a four-speed gearbox. | 4th Jun 1926 | Box 4 \ 8 08-page12 | |
| Importance of testing cars for the majority of customers who use closed bodies, rather than focusing on speed enthusiasts. | 4th Jun 1926 | Box 4 \ 8 08-page13 | |
| High-speed testing, complaints about steering, and clarifying that the Experimental Department are their own harshest critics. | 1st Jun 1926 | Box 4 \ 8 08-page14 | |
| Internal report discussing customer complaints, steering changes, and the rationale for high-speed testing in France. | 1st Jun 1926 | Box 4 \ 8 08-page15 | |
| Conditionally altering the steering type on cars only in cases where the customer complains. | 1st Jun 1926 | Box 4 \ 8 08-page16 | |
| High-speed performance comparisons between the Phantom, 20 HP car, and competitors. | 1st Oct 1926 | Box 4 \ 8 08-page17 | |
| Report comparing the performance of various car models, including braking tests and hill climb results. | 1st Oct 1926 | Box 4 \ 8 08-page18 | |
| The performance of a Lincoln car's rear suspension and a 6-cylinder A.C. engine. | 1st Oct 1926 | Box 4 \ 8 08-page19 | |
| Performance comparison table of various cars over standing and flying mile distances. | 1st Oct 1926 | Box 4 \ 8 08-page20 | |
| Bar chart comparing the 'Displacement / Ton Mile' for various closed and open cars. | 1st Oct 1926 | Box 4 \ 8 08-page21 | |
| Power curve graph for a 6-cylinder, 2-litre A.C. engine with a single carburetter. | 12th Nov 1926 | Box 4 \ 8 08-page22 | |
| Issues with the Phantom chassis and the viability of a new high speed model. | 12th Nov 1926 | Box 4 \ 8 08-page23 | |
| Declining sales of open touring cars and the viability of producing a special speed model. | 12th Nov 1926 | Box 4 \ 8 08-page24 | |
| Car body design, the challenges of Weyman bodies, and balancing aesthetic standards with customer preferences for space and comfort. | 12th Nov 1926 | Box 4 \ 8 08-page25 | |
| Internal correspondence regarding a customer's request for a high-speed Phantom model capable of 85 mph. | 13th Dec 1926 | Box 4 \ 8 08-page26 | |
| Responding to a query about guaranteeing an 85 MPH speed for the Phantom car, with recommendations and discussion of experimental engine improvements. | 14th Dec 1926 | Box 4 \ 8 08-page27 | |
| Need for double shock dampers on 40/50 & 20 HP cars prepared for high-speed use. | 13th Dec 1926 | Box 4 \ 8 08-page28 | |
| Proposing the 10-EX Sports Model to demonstrate high-speed performance and impress potential buyers. | 29th Apr 1927 | Box 4 \ 8 08-page29 | |
| Disappointing top speed of the English Phantom and requesting a General Motors performance report. | 1st Dec 1927 | Box 4 \ 8 08-page30 | |
| Reply to Lord Curzon's letter regarding car performance, speed, and wind resistance. | 1st Jan 1928 | Box 4 \ 8 08-page31 | |
| Comparison of the performance of Isotta, Bentley, Vauxhall, and Sunbeam cars against the Phantom model. | 1st Jan 1928 | Box 4 \ 8 08-page32 | |
| The practicality of high speeds for touring cars versus racing cars, with a mention of Bugatti and Brooklands. | 6th Feb 1928 | Box 4 \ 8 08-page33 | |
| Typed memo discussing poor maximum speed, dynamometer tests, and high-speed wobble on a car. | 6th Feb 1928 | Box 4 \ 8 08-page34 | |
| Top speed performance of a Continental Phantom after 8000 miles. | 9th Mar 1938 | Box 4 \ 8 08-page35 | |
| Post Office telegram message concerning a request to travel. | 22th Apr 1922 | Box 4 \ 9 09-page001 | |
| Logistical arrangements for shipping chassis 9/4/III from London to Boulogne. | 1st May 1925 | Box 4 \ 9 09-page002 | |
| Work on chassis 93 EX and 9 J.III, including a gearbox oil leak and brake overhaul. | 4th Jun 1925 | Box 4 \ 9 09-page003 | |
| Telegraph from Hancock to Hives reporting a broken near-side front spring leaf. | 25th Jul 1932 | Box 4 \ 9 09-page004 | |
| Telegram received by telephone with handwritten notes and annotations. | 8th Jun 1925 | Box 4 \ 9 09-page005 | |
| Broken top leaf on the N.S. front spring during tests in France on a 20 HP Plus F.W.B. car. | 1st Jun 1925 | Box 4 \ 9 09-page006 | |
| Correspondence to Mr. Hancock in France regarding the dispatch of spare parts and oil. | 8th Jun 1925 | Box 4 \ 9 09-page007 | |
| From France regarding the supply of engine oil and front springs for a 40 HP car. | 9th Jun 1925 | Box 4 \ 9 09-page008 | |
| The condition of chassis 9 G.III after 2,764 miles of testing. | 10th Jun 1925 | Box 4 \ 9 09-page009 | |
| Issues and rectifications on vehicle components including the undershield, radiator, dashboard, steering, and front axle. | 10th Jun 1925 | Box 4 \ 9 09-page010 | |
| Test and inspection report on various vehicle components including the clutch, gearbox, and brakes. | 10th Jun 1925 | Box 4 \ 9 09-page011 | |
| Inspection report detailing the condition and adjustments made to various vehicle components. | 10th Jun 1925 | Box 4 \ 9 09-page012 | |
| Inspection report detailing the condition of the frame, shafts, and wings. | 12th Jun 1925 | Box 4 \ 9 09-page013 | |
| Cover letter for a report on chassis 9-G-111 after 2,764 miles. | 12th Jun 1925 | Box 4 \ 9 09-page014 | |
| Chassis 9-G-111 after completing 2,764 miles. | 1st Jun 1925 | Box 4 \ 9 09-page015 | |
| Observations on the gearbox undershield, radiator, dashboard, steering, and front axle. | 10th Jun 1925 | Box 4 \ 9 09-page016 | |
| Issues with front springs, clutch, and gearbox components during testing. | 10th Jun 1925 | Box 4 \ 9 09-page017 | |
| The condition and testing of vehicle components including pedals, axle, brakes, and electrical fittings. | 25th Sep 1936 | Box 4 \ 9 09-page018 | |
| Vehicle components including the exhaust, brake shaft, and frame. | 10th Jun 1925 | Box 4 \ 9 09-page019 | |
| From G.W. Hancock confirming the arrival and fitting of 20 HP front road springs to chassis 9 G.III. | 11th Jun 1925 | Box 4 \ 9 09-page020 | |
| Progress report on vehicle repairs and road testing, detailing spring and steering adjustments. | 12th Jun 1925 | Box 4 \ 9 09-page021 | |
| Gearbox oil leak, spring strengths, a misaddressed oil delivery, and requests for supplies. | 2nd Jun 1925 | Box 4 \ 9 09-page022 | |
| Secret memo detailing the weight specifications for the front of car 9-G-111, including axle and spring details. | 2nd Jun 1925 | Box 4 \ 9 09-page023 | |
| Investigation and revised diagnosis of an oil leak, tracing it from the gearbox case to the speedometer drive. | 13th Jun 1935 | Box 4 \ 9 09-page024 | |
| Investigation into an oil leak, engine roughness, and other mechanical issues on car 9 G.III. | 15th Jun 1925 | Box 4 \ 9 09-page025 | |
| Letter comparing newly fitted 600 lbs front springs to the original 600/650 lbs springs for vehicle 9-G-111. | 15th Jun 1925 | Box 4 \ 9 09-page026 | |
| Issue with the lubricator on front spring leather covers fouling the undershields. | 15th Jun 1925 | Box 4 \ 9 09-page027 | |
| Secret memo regarding the extended testing of a car abroad up to 10,000 miles. | 17th Jun 1925 | Box 4 \ 9 09-page028 | |
| Acknowledging a car will not be returning to England and requesting updates on car movements at Châteauroux. | 19th Jun 1925 | Box 4 \ 9 09-page029 | |
| Chassis 9 G.III after 5,726 miles. | 21th Jun 1928 | Box 4 \ 9 09-page030 | |
| Condition report on various engine and chassis components, detailing issues and rectifications. | 21th Jun 1928 | Box 4 \ 9 09-page031 | |
| Condition report on various vehicle components including the dynamo, oil pump, and gearbox. | 21th Jun 1928 | Box 4 \ 9 09-page032 | |
| Road tests of steering performance and inspection of front axle and brake components. | 21th Jun 1928 | Box 4 \ 9 09-page033 | |
| The condition of brake shafts, shock absorbers, road springs, clutch, and gearbox. | 21th Jun 1928 | Box 4 \ 9 09-page034 | |
| The condition and performance of various vehicle mechanisms. | 21th Jun 1928 | Box 4 \ 9 09-page035 | |
| Condition report assessing wear and faults on various vehicle components. | 22th Jun 1925 | Box 4 \ 9 09-page036 | |
| Letter regarding a fan boom issue on chassis 9-G-111 and the management of spare parts stock, specifically front springs, at Chateauroux. | 22th Jun 1925 | Box 4 \ 9 09-page037 | |
| Continuation page of a document regarding parts required for the 20 HP model based on experience in France. | 1st Jun 1925 | Box 4 \ 9 09-page038 | |
| Cover note for a report on chassis 9-0-111 after 5,726 miles, which is running in France. | 1st Jun 1925 | Box 4 \ 9 09-page039 | |
| Temperature test conditions for chassis 9 G.III, with notes on spare parts availability. | 24th Jun 1925 | Box 4 \ 9 09-page040 | |
| Temperature readings and fan boom observations for chassis 9 G.III. | 25th Jun 1925 | Box 4 \ 9 09-page041 | |
| Report by S.G. Bagley from France on temperature readings, buffer clearances and travel arrangements for chassis 9.G.III. | 27th Jun 1925 | Box 4 \ 9 09-page042 | |
| Temperature readings for Chassis 9.T.III. | 26th Jun 1925 | Box 4 \ 9 09-page043 | |
| Temperature readings and gearbox testing for Chassis 9 A.III. | 29th Jun 1925 | Box 4 \ 9 09-page044 | |
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