| Description | Date | Identifier | |
| Proposed draft for a leaflet and chassis label regarding the cleaning of untarnishable surfaces. | 22th Dec 1930 | Box 154a \ 1 scan0235 | |
| Instructions for cleaning untarnishable surfaces such as chromium and 'Staybrite' steel. | 1st Apr 1940 | Box 154a \ 1 scan0236 | |
| Letter to Mr. Heron regarding salt cooled valves and a query about Nitro Hardened Steel's compatibility with TEL dope. | 14th Mar 1931 | Box 154a \ 1 scan0237 | |
| Unsuitability of Nitro Hardened Steel when used with TEL (Tetraethyllead) dope. | 14th Mar 1931 | Box 154a \ 1 scan0238 | |
| Engine improvements using nitro-hardened crankshafts and cylinder liners. | 23th Apr 1931 | Box 154a \ 1 scan0239 | |
| Laboratory report detailing the results of tensile tests on various steel types. | 1st Oct 1931 | Box 154a \ 1 scan0240 | |
| Material supply and production capacity for crankshafts. | 1st Dec 1931 | Box 154a \ 1 scan0241 | |
| The comparison of cylinder liner steel with 0.6% carbon at varying hardness levels, detailing mechanical properties and friction tests. | 16th Dec 1931 | Box 154a \ 1 scan0242 | |
| Use of Firth's high-grade steel, its properties, and manufacturing considerations for various parts. | 15th Jan 1932 | Box 154a \ 1 scan0243 | |
| Alternative steel suppliers to Firth's, weighing price against uniformity. | 19th Jan 1932 | Box 154a \ 1 scan0244 | |
| Laboratory report on the unexpected results of case hardening tests on austenitic steel cylinder liners. | 9th Feb 1932 | Box 154a \ 1 scan0245 | |
| Cylinder liners produced from austenitic steel by the Sheepbridge Stokes Centrifugal Castings Co. | 10th Feb 1932 | Box 154a \ 1 scan0246 | |
| Comparison between the existing standard steel and a proposed new steel for use in aero engine connecting rod bolts. | 10th Feb 1932 | Box 154a \ 1 scan0247 | |
| The risks of increasing the tensile strength of 3½% nickel steel. | 10th Feb 1932 | Box 154a \ 1 scan0248 | |
| Laboratory report on the nitriding of austenitic steel cylinder liners. | 20th Feb 1932 | Box 154a \ 1 scan0249 | |
| Letter from F.H. Royce to Mr. Wormald discussing the cost and quality of steels. | 15th Mar 1932 | Box 154a \ 1 scan0250 | |
| Paper from The Mond Nickel Company Limited on Nickel Steel, titled 'Breaking Records and Breaking Stresses', relating to the 'Golden Arrow'. | 15th Mar 1932 | Box 154a \ 1 scan0251 | |
| List of other available publications on various nickel alloys and processes. | 15th Mar 1932 | Box 154a \ 1 scan0252 | |
| The use and properties of Nickel Alloy Steels in the construction of the 'Golden Arrow' land speed record car. | 15th Mar 1932 | Box 154a \ 1 scan0253 | |
| Diagrams illustrating the use of Nickel Alloy Steels in the 'Golden Arrow' racing car and its gearbox. | 15th Mar 1932 | Box 154a \ 1 scan0254 | |
| Detailed report on the metallurgy and construction of the engine, transmission, frame, and axles of the 'Golden Arrow' record-breaking car. | 15th Mar 1932 | Box 154a \ 1 scan0255 | |
| Technical bulletin detailing the use and properties of various steel alloys in automotive components, including axles, steering, and the 'Golden Arrow' engine. | 23th Apr 1932 | Box 154a \ 1 scan0256 | |
| Cost and potential use of nitro-hardened crankshafts for the Bensport model. | 23th Apr 1932 | Box 154a \ 1 scan0257 | |
| Supply of Nitralloy type crankshafts and comparing different steel types for production. | 26th Apr 1932 | Box 154a \ 1 scan0258 | |
| Letter from the Air Ministry regarding the use and properties of Tantalum in steel alloys, following a sample being brought from America. | 19th May 1932 | Box 154a \ 1 scan0259 | |
| Investigation into the unsatisfactory results of nitriding austenitic steel cylinder liners for Kestrel engines. | 7th Jun 1932 | Box 154a \ 1 scan0260 | |
| Agreement with Vickers for the supply and nitriding of V.C.M. steel crankshafts. | 7th Jun 1932 | Box 154a \ 1 scan0261 | |
| Use of the nitriding process on H.R. Crown Valve Steel for inlet valves. | 3rd Jun 1932 | Box 154a \ 1 scan0262 | |
| From ROY to Hs. regarding the use of H.R. Crown Valve Steel for inlet valves. | 21th Jun 1932 | Box 154a \ 1 scan0263 | |
| The nitriding treatment of austenitic steel liners. | 22th Jun 1932 | Box 154a \ 1 scan0264 | |
| Use of electric upsetting machines for valve production from SLV Bar. | 21th Jul 1932 | Box 154a \ 1 scan0265 | |
| The production, heat treatment and testing of Kestrel cylinder liners made from nitrided austenitic steel. | 5th Oct 1932 | Box 154a \ 1 scan0266 | |
| Blueprint with measurements for a Kestrel Single Cylinder Liner made of Austenitic Steel. | 26th Sep 1932 | Box 154a \ 1 scan0267 | |
| Standardisation of chassis parts, specifically the Nitro Hardened Crankshaft. | 17th Aug 1932 | Box 154a \ 1 scan0268 | |
| Standardisation sheet for a nitin hardened crankshaft to reduce wear. | 17th Aug 1932 | Box 154a \ 1 scan0269 | |
| Coefficient of linear expansion for H.R. Crown Austenitic Steel. | 19th Dec 1932 | Box 154a \ 1 scan0270 | |
| Order for 4000 Valve Stampings placed by the Bristol Aeroplane Company with Hughes Johnson Stampings Ltd. | 5th Sep 1933 | Box 154a \ 1 scan0271 | |
| Specifications and treatment procedures for Ford Steel suitable for cyanided gears. | 18th Dec 1936 | Box 154a \ 1 scan0272 | |
| Clarifying the lack of legal obligation for steel supplies from Firth's Steels. | 21th Sep 1938 | Box 154a \ 1 scan0273 | |
| Substitution of steel with aluminium for weight-saving in car parts, particularly axles. | 7th Mar 1940 | Box 154a \ 1 scan0274 | |
| Comparison of gauge and weight ratios for steel versus light alloys (Aluminium and Magnesium) in various automotive components. | 7th Mar 1940 | Box 154a \ 1 scan0275 | |
| Comparative analysis of the properties and performance of light alloys (Aluminium, Magnesium) versus steel components. | 8th Mar 1940 | Box 154a \ 1 scan0276 | |
| Request for the comparative prices of SZN and XCr steels. | 16th May 1940 | Box 154a \ 1 scan0277 | |
| Tempering graph for Vibrac Steel V.45, showing various material properties against reheating temperatures. | 16th May 1940 | Box 154a \ 1 scan0278 | |
| Tempering graph for Vibrac Steel V. 30, showing material properties against reheating temperatures. | 16th May 1940 | Box 154a \ 1 scan0279 | |
| Analysis of the causes, effects, and methods for reducing harshness in the ride of an automobile. | 1st Jan 1939 | Box 154a \ 2 scan0001 | |
| Journal page discussing automotive ride harshness and its measurement, with a cutaway diagram of a car's body and chassis construction. | 1st Jan 1939 | Box 154a \ 2 scan0002 | |
| Paper discussing the causes of and solutions for harshness in automobiles, focusing on suspension and structural rigidity. | 1st Jan 1939 | Box 154a \ 2 scan0003 | |
| Journal page discussing vehicle harshness and structural rigidity, illustrated with diagrams of torsional deflection twist tests. | 1st Jan 1939 | Box 154a \ 2 scan0004 | |
| Technical page discussing and illustrating torsional deflection tests on automobile chassis and complete cars. | 1st Jan 1939 | Box 154a \ 2 scan0005 | |
| Technical page from an S.A.E. journal analysing vehicle frame and body deflection with different mounting systems. | 1st Jan 1939 | Box 154a \ 2 scan0006 | |
| Paper discussing the causes of and methods for reducing harshness and noise in automobiles, including mathematical analysis. | 1st Jan 1939 | Box 154a \ 2 scan0007 | |
| Paper on the requirements and testing of aircraft engine lubrication. | 14th Jun 1938 | Box 154a \ 2 scan0008 | |
| Aircraft engine lubrication experiments studying ring-sticking and piston cleanliness with various oils. | 1st Jan 1939 | Box 154a \ 2 scan0009 | |
| Journal page discussing engine component failure modes such as ring-sticking and bearing corrosion, with supporting test data graphs. | 1st Jan 1939 | Box 154a \ 2 scan0010 | |
| Page from a journal on aircraft-engine lubrication, detailing experiments and factors affecting carbon formation. | 1st Jan 1939 | Box 154a \ 2 scan0011 | |
| Technical paper discussing carbon deposits and sludge formation in engines. | 1st Jan 1939 | Box 154a \ 2 scan0012 | |
| Paper on aircraft engine lubrication, detailing test conditions, methodology, and results for oil performance. | 1st Jan 1939 | Box 154a \ 2 scan0013 | |
| Journal page detailing tests on engine ring-sticking, analysis of used oil, and methods for reducing carburetor icing. | 10th Mar 1938 | Box 154a \ 2 scan0014 | |
| Letter to Toledo Woodhead Springs Ltd. regarding an order and specifications for rear leaf springs. | 3rd Jan 1939 | Box 154a \ 2 scan0015 | |
| Letter from Toledo Woodhead Springs Ltd discussing pricing for Ferodo Strips and spring interleaving. | 4th Jan 1939 | Box 154a \ 2 scan0016 | |
| Price quotation from Toledo Woodhead Springs Ltd. for various sizes of Ferodo strips. | 3rd Jan 1939 | Box 154a \ 2 scan0017 | |
| Order request for a further supply of special Jackson Board interleaving for rear springs. | 7th Jan 1939 | Box 154a \ 2 scan0018 | |
| Follow-up letter from DuPont regarding 'Orel' Rubber Lubricant. | 9th Jan 1939 | Box 154a \ 2 scan0019 | |
| Letter from Du Pont regarding a new rubber lubricant 'Orel' and an offer of a sample for testing. | 21th Dec 1938 | Box 154a \ 2 scan0020 | |
| Letter to Ellison Insulations requesting a sample of 'bakelized' material for testing as interleaving for road springs. | 13th Jan 1939 | Box 154a \ 2 scan0021 | |
| Official order for Bakelized material from Ellisons Insulations, Birmingham. | 17th Jan 1939 | Box 154a \ 2 scan0022 | |
| Official order for a sheet of rubber from the British Tyre & Rubber Co. | 17th Jan 1939 | Box 154a \ 2 scan0023 | |
| Letter to E.I. Du Pont De Nemours & Co. requesting a sample of 'Orel' rubber lubricant. | 18th Jan 1939 | Box 154a \ 2 scan0024 | |
| Letter from The Cloudsley Engineering Company Ltd. regarding a shock-absorber arrangement with a laminated disc valve. | 20th Jan 1939 | Box 154a \ 2 scan0025 | |
| Letter from The Cloudsley Engineering Company describing an invention's features related to a piston and valve assembly. | 19th Jan 1939 | Box 154a \ 2 scan0026 | |
| Cross-sectional diagrams of three mechanical valve or injector components. | 20th Jan 1938 | Box 154a \ 2 scan0027 | |
| Letter from The Cloudsley Engineering Company detailing a shock-absorber arrangement with a laminated disc valve. | 19th Jan 1939 | Box 154a \ 2 scan0028 | |
| Letter from The Cloudsley Engineering Company Ltd. discussing the mechanics of a piston and valve assembly. | 19th Jan 1939 | Box 154a \ 2 scan0029 | |
| Requesting an official order for Bakelized Fabric material for the interleaving of rear road springs. | 21th Jan 1939 | Box 154a \ 2 scan0030 | |
| Letter from Enwood Steel Products Ltd. confirming a meeting to discuss spring manufacture. | 27th Jan 1939 | Box 154a \ 2 scan0031 | |
| Letter to Cloudsley Engineering Co. Ltd. regarding car suspension, comparators, and dampers. | 27th Jan 1939 | Box 154a \ 2 scan0032 | |
| Letter from The Cloudsley Engineering Company offering to sell an Oyston Suspension Comparator instrument for £72 10s. | 1st Nov 1938 | Box 154a \ 2 scan0033 | |
| Article on the Oyston Comparator for investigating and measuring vehicle suspension and damping performance. | 1st Nov 1938 | Box 154a \ 2 scan0034 | |
| Analysis of vehicle suspension performance using a gyroscopic recording instrument and comparing results from different cars and adjustments. | 6th Feb 1939 | Box 154a \ 2 scan0035 | |
| Requesting approval to purchase an Avery No. 662 Spring Testing Machine. | 6th Feb 1939 | Box 154a \ 2 scan0036 | |
| Letter from the Experimental Department to Ellison Insulations Ltd. regarding the testing of graphite impregnated Tufnol. | 8th Feb 1939 | Box 154a \ 2 scan0037 | |
| Letter to a spring supplier requesting a change in the manufacturing process for springs. | 10th Feb 1939 | Box 154a \ 2 scan0038 | |
| Order for Silentbloc bearings for use in B.lll & 50 chassis. | 21th Feb 1939 | Box 154a \ 2 scan0039 | |
| Letter to Toledo Woodhead Spring Co. Ltd. enquiring about the weight increase of a new 56' leaf spring. | 22th Feb 1939 | Box 154a \ 2 scan0040 | |
| Order for road springs for two chassis. | 1st Mar 1939 | Box 154a \ 2 scan0041 | |
| Requesting the despatch of a Firth road leaf spring to Willcot (Parent) Co. Ltd. | 1st Mar 1939 | Box 154a \ 2 scan0042 | |
| Order for 50 pairs of rear road springs from Messrs. Thomas Firth. | 1st Mar 1939 | Box 154a \ 2 scan0043 | |
| Standardisation of Firth Springs for the Bentley V rear road springs. | 2nd Mar 1939 | Box 154a \ 2 scan0044 | |
| Order for front and rear road springs for a Bentley V Bumper Chassis. | 6th Mar 1939 | Box 154a \ 2 scan0045 | |
| Letter to E.I. Du Pont De Nemours & Co. regarding the absence of Mr. Martindale. | 6th Mar 1939 | Box 154a \ 2 scan0046 | |
| Letter from the Experimental Department to Toledo Woodhead Springs Ltd. regarding the development of a proposed 56' leaf spring. | 10th Mar 1939 | Box 154a \ 2 scan0047 | |
| Request for a 1000 lb. spring for the FW.1781 series. | 10th Mar 1939 | Box 154a \ 2 scan0048 | |
| Letter to the English Steel Corporation requesting the urgent manufacture of two pairs of coil springs. | 13th Mar 1939 | Box 154a \ 2 scan0049 | |
| Specifications for 8' static deflection springs with an 850 lbs. normal load. | 13th Mar 1939 | Box 154a \ 2 scan0050 | |
| Official order for coil springs from the English Steel Corporation. | 15th Mar 1939 | Box 154a \ 2 scan0051 | |
| Letter to Toledo Woodhead Springs Ltd. requesting a cost estimate for cutting new Roles for a leaf spring. | 22th Mar 1939 | Box 154a \ 2 scan0052 | |
| The pros and cons of the Packard type front suspension. | 27th Mar 1939 | Box 154a \ 2 scan0053 | |
| Review of the advantages and disadvantages of the Packard suspension system. | 27th Mar 1939 | Box 154a \ 2 scan0054 | |
| Technical analysis and comparison of various vehicle suspension systems, with requirements for a rationalised programme. | 27th Mar 1939 | Box 154a \ 2 scan0055 | |
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