| Description | Date | Identifier | |
| Cross-reference note for a report on a car at the Olympia Motor Show. | 1st Oct 1931 | Box 22 \ 1 Scan319 | |
| Confidential memo regarding Hispano-Suiza, forwarding an attached note for information. | 3rd Nov 1932 | Box 22 \ 1 Scan320 | |
| Confidential memo discussing the weights and material composition of Hispano-Suiza Xbrs and Ybrs engines. | 2nd Nov 1932 | Box 22 \ 1 Scan321 | |
| The independent wheel suspension system of the André Dubonnet car. | 23th Nov 1932 | Box 22 \ 1 Scan322 | |
| Report summarizing impressions on M. Dubonnet's independent wheel suspension and considering its use on a Phantom II. | 23th Nov 1932 | Box 22 \ 1 Scan323 | |
| Specification sheet detailing suspension characteristics and measurements. | 23th Nov 1932 | Box 22 \ 1 Scan324 | |
| Design document detailing vehicle weight distribution and steering system characteristics. | 23th Nov 1932 | Box 22 \ 1 Scan325 | |
| Two blueprint-style illustrations of drive transmission joints. | 23th Nov 1932 | Box 22 \ 1 Scan326 | |
| Noting that the engine, gearbox and steering gear are standard Hispano parts, with a reference to a Paris 'Salon' report. | 23th Nov 1932 | Box 22 \ 1 Scan327 | |
| Performance and specification report for a Hupmobile 16.9 HP 4 Cylinder car. | 1st Feb 1922 | Box 22 \ 2 Scan001 | |
| Specification sheet detailing vehicle performance, engine, suspension, and steering characteristics. | 19th Jul 1917 | Box 22 \ 2 Scan002 | |
| List of vehicle design specifications for the engine, suspension, brakes, and dimensions. | 19th Jul 1917 | Box 22 \ 2 Scan003 | |
| Performance test data for a Hupmobile Car 16.9 HP, showing engine revolutions, load, horsepower, and MEP. | 24th Mar 1921 | Box 22 \ 2 Scan004 | |
| Dynamometer test report showing engine revolutions against horsepower readings under different test conditions. | 5th Apr 1918 | Box 22 \ 2 Scan005 | |
| Sale of two American cars, a Hupmobile and a Dodge, at Lillie Hall. | 30th Jun 1921 | Box 22 \ 2 Scan006 | |
| Confirming the delivery and disposal of American cars. | 1st Jul 1921 | Box 22 \ 2 Scan007 | |
| Record of the total mileage for a Hupmobile Car. | 5th Sep 1934 | Box 22 \ 2 Scan008 | |
| Flight Lieutenant Potts and his newly purchased Straight 8 Hupmobile. | 5th Sep 1934 | Box 22 \ 2 Scan009 | |
| Cover note for a report on an Isotta Fraschini Car. | 31th Dec 1920 | Box 22 \ 2 Scan010 | |
| Road test and comparison of an Isotta Fraschini 'Straight 8' car. | 24th Dec 1920 | Box 22 \ 2 Scan011 | |
| The urgent study of a competitor's front wheel brakes, specifically the Hispano. | 27th Sep 1923 | Box 22 \ 2 Scan012 | |
| Confidential memo regarding the delivery schedule for an Isotta Fraschini car. | 1st Oct 1923 | Box 22 \ 2 Scan013 | |
| Urgent request for an order number for work to be done on an Isotta-Fraschini car. | 16th Oct 1923 | Box 22 \ 2 Scan014 | |
| Performance review and fault report on an Isotta-Fraschini car. | 18th Oct 1923 | Box 22 \ 2 Scan015 | |
| Communication regarding the delivery of an Isotta Fraschini for sale and an inquiry about a Hispano Car. | 23th Oct 1923 | Box 22 \ 2 Scan016 | |
| Sale of an Isotta Fraschini and the potential purchase of a Hispano Suiza. | 30th Oct 1923 | Box 22 \ 2 Scan017 | |
| Urgent need to acquire and test a modern Hispano car. | 31th Oct 1923 | Box 22 \ 2 Scan018 | |
| Extract of a memo discussing competitor Hispano and interest in 8-cylinder in-line engines. | 18th Oct 1923 | Box 22 \ 2 Scan019 | |
| Acquisition and testing of a Hispano car. | 29th Oct 1923 | Box 22 \ 2 Scan020 | |
| Broken down Isotta Fraschini car with stripped bevel gears and discussing repair options. | 5th Nov 1923 | Box 22 \ 2 Scan021 | |
| Road and dynamometer tests of an 8-cylinder Isotta car. | 5th Nov 1923 | Box 22 \ 2 Scan022 | |
| The performance of an Isotta Fraschini car. | 12th Jul 1923 | Box 22 \ 2 Scan023 | |
| The braking performance and handling characteristics of a vehicle. | 1st Nov 1923 | Box 22 \ 2 Scan024 | |
| Dynamometer horse power curve and ignition specifications. | 12th Jul 1923 | Box 22 \ 2 Scan025 | |
| Vehicle performance tests including acceleration, tractive resistance, fuel consumption, and hill climb results. | 5th Nov 1923 | Box 22 \ 2 Scan026 | |
| Braking distances for different brake configurations. | 5th Nov 1923 | Box 22 \ 2 Scan027 | |
| Performance test results for an Isotta Fraschini 8-cylinder car, including horsepower, braking, and acceleration. | 7th Nov 1923 | Box 22 \ 2 Scan028 | |
| Request for a new pair of rear axle spiral bevel gears for an Isotta Fraschini type-8 car, chassis number 359. | 6th Nov 1923 | Box 22 \ 2 Scan029 | |
| Whether to make a guarantee claim or purchase parts for an Isotta Fraschini with a broken valve. | 7th Nov 1923 | Box 22 \ 2 Scan030 | |
| Request for more detailed information about the braking system of an Isotta-Fraschini car for comparison with the Goshawk. | 1st Nov 1923 | Box 22 \ 2 Scan031 | |
| Sourcing or in-house manufacturing of a new Rear Axle Pinion and Crown Wheel for an Isotta Fraschini car. | 13th Nov 1923 | Box 22 \ 2 Scan032 | |
| Rear axle failure on an Isotta Fraschini car during final road tests. | 13th Nov 1923 | Box 22 \ 2 Scan033 | |
| Whether to manufacture or purchase parts for an Isotta Fraschini, based on a letter from Barkers. | 19th Nov 1923 | Box 22 \ 2 Scan034 | |
| Letter from coachbuilders Barker & Co. to Mr. Cowen forwarding correspondence from an Isotta-Fraschini agent. | 18th Nov 1923 | Box 22 \ 2 Scan035 | |
| Letter from F.C. Cottrell & Co. regarding faulty parts and the specialized equipment needed for replacement. | 15th Nov 1923 | Box 22 \ 2 Scan036 | |
| Letter concerning a back axle failure on an Isotta Fraschini Touring Car belonging to Mr. Noel Lloyd. | 22th Nov 1923 | Box 22 \ 2 Scan037 | |
| Instruction memo to authorise work on a Fraschini car by Sanderson & Holmes Ltd. | 22th Nov 1923 | Box 22 \ 2 Scan038 | |
| Typed memo requesting a decision on acquiring parts for an Isotta Fraschini. | 3rd Dec 1923 | Box 22 \ 2 Scan039 | |
| Decision to produce gears in-house for an Isotta Fraschini car. | 12th Dec 1923 | Box 22 \ 2 Scan040 | |
| Enquiry from Barkers about the availability of a Hispano and an Isotta-Fraschini for sale. | 1st Jan 1924 | Box 22 \ 2 Scan041 | |
| Attached photostat copy of an Isotta Fraschini Crankshaft. | 28th Jan 1924 | Box 22 \ 2 Scan042 | |
| Technical drawing detailing the specifications and views of a crankshaft. | 30th Jan 1924 | Box 22 \ 2 Scan043 | |
| Invoice for repairs to an Isotta Fraschini car, where anonymity was maintained. | 30th Jan 1924 | Box 22 \ 2 Scan044 | |
| Complete list of tools and spares for an 8-Cylinder Isotta Fraschini car. | 19th Feb 1924 | Box 22 \ 2 Scan045 | |
| The disposal of three cars: an Isotta Fraschini, a Marmon, and an experimental 4-EX. | 19th Feb 1924 | Box 22 \ 2 Scan046 | |
| Correspondence regarding the sale and overhaul of an Isotta Fraschini, a Marmon Car, and a 4-EX chassis. | 22th Feb 1924 | Box 22 \ 2 Scan047 | |
| Request for full particulars of an Isotta Fraschini chassis to facilitate its sale. | 14th Mar 1924 | Box 22 \ 2 Scan048 | |
| Responding to a query about an Isotta Fraschini, suggesting the specifications can be found in a catalogue from Messrs. Barkers. | 27th Mar 1924 | Box 22 \ 2 Scan049 | |
| Comparing an Isotta Fraschini car to a company model and discussing similarities in gearbox designs. | 1st Jan 1930 | Box 22 \ 2 Scan050 | |
| Page 2 of a letter regarding Mr. Salerni's visits, a potential patent conflict over gears, and a proposed working agreement. | 1st Jan 1930 | Box 22 \ 2 Scan051 | |
| Work, insurance, and registration for a Lanchester 40/60 car. | 18th Jan 1912 | Box 22 \ 3 Scan001 | |
| The testing, insurance, and logbook entries for a Lanchester car. | 19th Jan 1912 | Box 22 \ 3 Scan002 | |
| Instruction to place an official order with Holmes & Co for modifications to a Lanchester Chassis. | 20th Jan 1912 | Box 22 \ 3 Scan003 | |
| Internal correspondence regarding how to reference a specific chassis, concluding it should be known as the 'L' chassis. | 23th Jan 1912 | Box 22 \ 3 Scan004 | |
| Outlining procedures for the use of the Lanchester Car X440. | 23th Jan 1912 | Box 22 \ 3 Scan005 | |
| Listing jobs to be completed on the 'L' Car. | 23th Jan 1912 | Box 22 \ 3 Scan006 | |
| Acquisition of instruction books for a Lanchester chassis, Napier, and Delaunay Belleville cars for experimental purposes. | 24th Jan 1912 | Box 22 \ 3 Scan007 | |
| Copy of a letter from coachbuilder Barker & Co. Ltd. requesting the return of a cover for a Lanchester chassis or an official order for purchase. | 28th Jan 1912 | Box 22 \ 3 Scan008 | |
| Internal memos discussing a cover for a Lanchester chassis and the privacy of the communication. | 30th Mar 1912 | Box 22 \ 3 Scan009 | |
| Departmental memo confirming the enclosure of a Lanchester Instruction Book. | 30th Mar 1912 | Box 22 \ 3 Scan010 | |
| Request for an instruction book for an 'L' Chassis, and also for Napier and Delaunay Belleville instruction books. | 1st Feb 1912 | Box 22 \ 3 Scan011 | |
| Request to test the springs of a Lanchester car when it is normally loaded. | 2nd Feb 1912 | Box 22 \ 3 Scan012 | |
| Internal memorandum concerning the booking in of 'L' Chassis X440 from Holmes & Co. | 22th Dec 1911 | Box 22 \ 3 Scan013 | |
| Internal departmental memo regarding the forwarding of tools for a Lanchester chassis. | 10th Feb 1912 | Box 22 \ 3 Scan014 | |
| Departmental memo regarding the return of a Lanchester chassis required by Barkers for coachwork. | 13th Feb 1912 | Box 22 \ 3 Scan015 | |
| Private estimate for the 'L' Chassis being improperly handled. | 15th Feb 1912 | Box 22 \ 3 Scan016 | |
| Internal instruction memo regarding car registration and photography. | 15th Feb 1912 | Box 22 \ 3 Scan017 | |
| Letter confirming arrangements for a Lanchester chassis for France, including registration and a driving trial. | 15th Feb 1912 | Box 22 \ 3 Scan018 | |
| Cancelling a previous instruction regarding a Lanchester Chassis car destined for France. | 15th Feb 1912 | Box 22 \ 3 Scan019 | |
| Letter regarding photographs of a Lanchester Chassis for an International Driving Pass. | 16th Feb 1912 | Box 22 \ 3 Scan020 | |
| Letter to Mr Johnson regarding the transport of a Lanchester chassis to France for Mr Royce. | 16th Feb 1912 | Box 22 \ 3 Scan021 | |
| Concluding that a stop of more than one day in Paris is necessary for a general examination after a run. | 16th Feb 1912 | Box 22 \ 3 Scan022 | |
| Letter to Mr. Cowen regarding arrangements for a Lanchester Chassis being sent to France, including an R.A.C. trial, licensing, and number plates. | 16th Feb 1912 | Box 22 \ 3 Scan023 | |
| Outlining travel arrangements to take a Lanchester Chassis to France for a trial run. | 16th Feb 1912 | Box 22 \ 3 Scan024 | |
| Departmental memo regarding arranging a pass for Mr. Johnson's travel to France. | 16th Feb 1912 | Box 22 \ 3 Scan025 | |
| Departmental memo regarding a County Council form for a Lanchester chassis and number plates for a Delaunay car. | 16th Feb 1912 | Box 22 \ 3 Scan026 | |
| Departmental memo regarding chassis purchased from Lanchester & Delaunay-Bellville and a request for a completion date. | 1st Mar 1912 | Box 22 \ 3 Scan027 | |
| Private letter regarding the return of Lanchester & Delaunay Belleville chassis and an inquiry about the completion date for the work being done on them. | 1st Mar 1912 | Box 22 \ 3 Scan028 | |
| Departmental memo regarding the licensing of a 38 Lanchester chassis and a Delaunay-Belleville vehicle. | 6th Mar 1912 | Box 22 \ 3 Scan029 | |
| The delivery of a 'Delaunay Belleville' and the return of a 'Lanchester' car. | 6th Mar 1912 | Box 22 \ 3 Scan030 | |
| The delayed return of a Delaunay Belleville and a Lanchester due to experimentation. | 7th Mar 1912 | Box 22 \ 3 Scan031 | |
| To Mr Cowen regarding the completion of a license for a Lanchester chassis. | 7th Mar 1912 | Box 22 \ 3 Scan032 | |
| Departmental memo regarding the requirement to fill out a license form for a Lanchester chassis. | 12th Mar 1912 | Box 22 \ 3 Scan033 | |
| The requirement to obtain licenses for Lanchester & DeLaunay Belleville. | 13th Mar 1912 | Box 22 \ 3 Scan034 | |
| The urgent return of Delaunay-Bellville & Lanchester chassis and the removal of a Napier chassis. | 15th Mar 1912 | Box 22 \ 3 Scan035 | |
| Requesting an official order confirmation for experimental work on an 'L' Chassis. | 22th Mar 1912 | Box 22 \ 3 Scan036 | |
| Cheque for the return of a deposit for French Customs duties. | 25th Mar 1912 | Box 22 \ 3 Scan037 | |
| Departmental memo inquiring about the completion status of a Delaunay Belleville and Lanchester chassis. | 27th Mar 1912 | Box 22 \ 3 Scan038 | |
| Examination timeline for Delauney Belleville and Lanchester chassis. | 29th Mar 1912 | Box 22 \ 3 Scan039 | |
| Departmental memo to Mr. Platford regarding the delayed return of D.B. and L. Chassis. | 2nd Apr 1912 | Box 22 \ 3 Scan040 | |
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