| Description | Date | Identifier | |
| Graph plotting the brake drum cooling rate against the speed of the car for various wheel configurations. | 12th Feb 1941 | Box 120 \ 1 scan0312 | |
| Graph showing the brake drum cooling rate against the speed of the car for an 11 B VI chassis with wheel cowls fitted. | 12th Feb 1941 | Box 120 \ 1 scan0313 | |
| Graph showing brake drum cooling curves at 60 MPH for a 4850 chassis. | 12th Feb 1941 | Box 120 \ 1 scan0314 | |
| Graph showing brake drum cooling rates at 40 M.P.H. for the 4B50 chassis. | 12th Feb 1941 | Box 120 \ 1 scan0315 | |
| Graph showing the effect of temperature on the wear of friction lining for clutch plates and brake drums. | 12th Feb 1941 | Box 120 \ 1 scan0316 | |
| Graph showing the effect of temperature on the wear of Ferodo M.R. friction lining. | 12th Feb 1941 | Box 120 \ 1 scan0317 | |
| Graph showing the relationship between car speed and brake drum cooling rate for a Buick 'Century' model. | 12th Feb 1942 | Box 120 \ 1 scan0318 | |
| Plating and delivery of cast iron brake drum liners and two rings. | 26th Mar 1941 | Box 120 \ 1 scan0319 | |
| Distortion issues found in narrow brake drums and a proposed solution involving a pattern modification. | 10th Nov 1941 | Box 120 \ 1 scan0320 | |
| Envelope from Leyland Motors containing photomicrographs of a brake drum. | 22th Jun 1942 | Box 120 \ 1 scan0321 | |
| Analysis of a Chromidium iron brake drum after braking tests. | 14th Jan 1936 | Box 120 \ 1 scan0322 | |
| Three photographs showing the microscopic structure of a braking surface. | 14th Jan 1936 | Box 120 \ 1 scan0323 | |
| Circular photomicrograph showing the microstructure of a material. | 11th Jan 1936 | Box 120 \ 1 scan0324 | |
| Microscopic analysis details for a Chromidium Cast Iron sample. | 11th Jan 1936 | Box 120 \ 1 scan0325 | |
| Two photomicrographs showing the structure of a material's surface. | 20th Jun 1935 | Box 120 \ 1 scan0326 | |
| Photomicrograph showing a material at 100 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0327 | |
| Indicating a reprint from a specific report. | 1st Oct 1935 | Box 120 \ 1 scan0328 | |
| Laboratory photomicrograph showing a material's microstructure at 100 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0329 | |
| Matched specimen of a special cast iron brake drum from R. Hyde & Son Ltd. | 1st Oct 1935 | Box 120 \ 1 scan0330 | |
| Photomicrograph showing a material's microstructure at 150x magnification. | 1st Oct 1935 | Box 120 \ 1 scan0331 | |
| Photomicrograph of 'Millenite' at 100 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0332 | |
| Photomicrograph of 'Millenite' at 150 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0333 | |
| Laboratory photomicrograph of 'Millenite' at 150 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0334 | |
| Photomicrograph of 'Millenite' at 100x magnification, part of specification no. 66. | 20th Jun 1935 | Box 120 \ 1 scan0335 | |
| Laboratory photomicrograph of a material sample at 100 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0336 | |
| Photomicrograph showing the microstructure of a material at 100x magnification, identified as Lake & Elliot Special. | 1st Oct 1935 | Box 120 \ 1 scan0337 | |
| Photomicrograph of a 'Lake & Elliot Special' material, specification number 118, at 150 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0338 | |
| Photomicrograph of 'Lake & Elliot Special' material at 100 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0339 | |
| Photomicrograph of a material named 'Lake & Elliot Special' for specification number 119 at 100x magnification. | 1st Oct 1935 | Box 120 \ 1 scan0340 | |
| Laboratory photomicrograph of 'Lake & Elliot Special' material, specification number 119, at 150 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0341 | |
| Laboratory photomicrograph of a material labelled 'Lepaz' at 150 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0342 | |
| Photomicrograph of a substance identified as 'Lepaz' at 100 diameters magnification. | 1st Oct 1935 | Box 120 \ 1 scan0343 | |
| Photomicrograph of a material sample identified as Spec. 'A' Brimol. | 20th Jun 1935 | Box 120 \ 1 scan0344 | |
| Photomicrograph of Brimol under specification 'A' at 100x magnification. | 20th Jun 1935 | Box 120 \ 1 scan0345 | |
| Photomicrograph of a material sample identified as Spec. 'B' Brimol at 100x magnification. | 20th Jun 1935 | Box 120 \ 1 scan0346 | |
| Photomicrograph of 'Brimol' material, specification 'B', at 100 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0347 | |
| Photomicrograph of 'Spec C' Brimol at 100 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0348 | |
| Photomicrograph of Spec 'C' Brimal at 100x magnification. | 20th Jun 1935 | Box 120 \ 1 scan0349 | |
| Photomicrograph of 'Brimol' material at 150 diameters magnification. | 20th Jun 1935 | Box 120 \ 1 scan0350 | |
| Proposal to test light alloy drums on transport cars, requesting development history and manufacturing techniques. | 21th Jan 1944 | Box 120 \ 1 scan0351 | |
| The development, issues, and manufacturing process of light alloy brake drums. | 9th Feb 1944 | Box 120 \ 1 scan0352 | |
| Casting aluminium brake drums and a list of alternative brake and hub designs. | 11th Aug 1941 | Box 120 \ 1 scan0353 | |
| Letter from New-Hudson Ltd offering their Girling braking system for 1937 productions. | 6th Jan 1936 | Box 120 \ 2 scan0001 | |
| Letter to Automotive Products Co. Ltd. requesting information on their 'Lockheed' brake systems. | 11th Feb 1936 | Box 120 \ 2 scan0002 | |
| Letter requesting information on the boiling point and types of Lockheed fluid. | 11th Feb 1936 | Box 120 \ 2 scan0003 | |
| Letter to New Hudson Ltd. concerning experiments with Girling brakes on a Bentley car. | 15th Apr 1936 | Box 120 \ 2 scan0004 | |
| Letter to Messrs. New-Hudson Ltd. concerning the design of an anti-wrapping brake linkage and rear drum shoes. | 23th Apr 1936 | Box 120 \ 2 scan0005 | |
| Letter detailing material specifications for 'shoes', including the required alloy and lining. | 23th Apr 1936 | Box 120 \ 2 scan0006 | |
| Letter to Messrs. New-Hudson Ltd. regarding the manufacture and jig drilling of a front axle forging. | 23th Apr 1936 | Box 120 \ 2 scan0007 | |
| Quotation from New-Hudson Ltd for supplying a machined front axle forging and Girling brakes. | 28th Apr 1936 | Box 120 \ 2 scan0008 | |
| Letter to New-Hudson Ltd. confirming the go-ahead for brake work. | 5th May 1936 | Box 120 \ 2 scan0009 | |
| Letter from New-Hudson Ltd regarding proceeding with brake work as instructed. | 6th May 1936 | Box 120 \ 2 scan0010 | |
| Requesting the dispatch of one front and one rear Bentley axle to New Hudson Ltd. concerning Girling Brakes. | 7th May 1936 | Box 120 \ 2 scan0011 | |
| Letter from New-Hudson Ltd concerning the Girling Brake layout for a new front axle. | 22th May 1936 | Box 120 \ 2 scan0012 | |
| Letter to Messrs. New Hudson Ltd. arranging to examine the layout of Girling Brakes for a 4 1/4 litre Bentley. | 23th May 1936 | Box 120 \ 2 scan0013 | |
| Letter from New-Hudson Ltd confirming a visit to examine the layout of Girling Brakes as applied to Bentley axles. | 25th May 1936 | Box 120 \ 2 scan0014 | |
| Letter from New-Hudson Ltd regarding the redesign of the front axle following an interview. | 28th May 1936 | Box 120 \ 2 scan0015 | |
| Letter to New-Hudson Ltd. about trialling new Girling brakes and necessary axle modifications. | 4th Jun 1936 | Box 120 \ 2 scan0016 | |
| Letter from New-Hudson Ltd concerning brake drum clearance and enclosing revised axle and brake drawings for approval. | 6th Jun 1936 | Box 120 \ 2 scan0017 | |
| Letter from New Hudson Ltd. regarding the trial of new brakes. | 6th Jun 1936 | Box 120 \ 2 scan0018 | |
| Letter to New-Hudson Ltd. approving a brake system scheme for an experimental car and discussing associated costs and drawing modifications. | 8th Jun 1936 | Box 120 \ 2 scan0019 | |
| Letter discussing the importance of a neat appearance for a hand-forged axle before examination. | 8th Jun 1936 | Box 120 \ 2 scan0020 | |
| Letter to The Automotive Products Co. Ltd. regarding drawings for Lockheed Brakes. | 9th Jun 1936 | Box 120 \ 2 scan0021 | |
| Letter from Bowden Engineers Ltd. recommending T-6-H conduit for the Bentley Car. | 11th Jun 1936 | Box 120 \ 2 scan0022 | |
| Page two of a letter from Bowden (Engineers) Ltd. about lubricator abutments. | 18th Apr 1936 | Box 120 \ 2 scan0023 | |
| Technical drawing for a Conduit Abutment. | 18th Apr 1936 | Box 120 \ 2 scan0024 | |
| Drawing of an outer casing abutment with a taper nose for car brake cables. | 10th Jun 1936 | Box 120 \ 2 scan0025 | |
| Data sheet for Bowdenex cable assemblies, detailing standard end fittings and ordering information. | 10th Jun 1936 | Box 120 \ 2 scan0026 | |
| Instructions and specifications for laying out a Bowdenex mechanism, including tables for conduits, cables, and abutments. | 12th Jun 1936 | Box 120 \ 2 scan0027 | |
| Letter from New-Hudson Ltd regarding the progress, cost, and quotation for a Girling Universal Brake system. | 12th Jun 1936 | Box 120 \ 2 scan0028 | |
| Requesting parts to be sent to the Lockheed Company for fitting brakes to a Phantom III chassis. | 13th Jun 1936 | Box 120 \ 2 scan0029 | |
| Letter from New-Hudson Ltd listing parts required to complete an order for a set of Girling Brakes. | 19th Jun 1936 | Box 120 \ 2 scan0030 | |
| Postscript to a letter requesting the loan of Hub Extractors and box spanners. | 19th Jun 1936 | Box 120 \ 2 scan0031 | |
| Request to despatch various parts and tools for Girling Brakes on a Bentley to New Hudson Ltd. | 22th Jun 1936 | Box 120 \ 2 scan0032 | |
| List of required and alternative hub removal tools for a Bentley Chassis. | 22th Jun 1936 | Box 120 \ 2 scan0033 | |
| Letter to Messrs. New-Hudson Ltd. arranging to send parts for one chassis plus 10% spares. | 22th Jun 1936 | Box 120 \ 2 scan0034 | |
| Quotation letter from New-Hudson Ltd for 400 sets of Girling Brakes. | 8th Jul 1936 | Box 120 \ 2 scan0035 | |
| Quotation from New-Hudson Ltd for 400 sets of Girling Brakes for Bentley with Rod Control. | 8th Jul 1936 | Box 120 \ 2 scan0036 | |
| Parts list for backplate assemblies. | 17th Jun 1936 | Box 120 \ 2 scan0037 | |
| Parts list for a Brake Shoe Assembly. | 8th Jul 1936 | Box 120 \ 2 scan0038 | |
| Parts list for an expander assembly and an adjuster assembly. | 26th Jun 1936 | Box 120 \ 2 scan0039 | |
| Letter to Messrs. New-Hudson Ltd. chasing an overdue front axle for a Bentley car ahead of a works shutdown. | 11th Jul 1936 | Box 120 \ 2 scan0040 | |
| Letter from New-Hudson Ltd concerning the expedited delivery of a front axle for a Bentley Car. | 13th Jul 1936 | Box 120 \ 2 scan0041 | |
| Letter from New-Hudson Ltd concerning the delayed delivery of a front axle for a Bentley Car. | 15th Jul 1938 | Box 120 \ 2 scan0042 | |
| Letter of thanks from the Works Manager of New Hudson Ltd. | 15th Jul 1936 | Box 120 \ 2 scan0043 | |
| Letter to Messrs. New-Hudson Ltd. regarding the inability to machine swivel pin holes on a Saturday due to the machine shop being closed. | 17th Jul 1936 | Box 120 \ 2 scan0044 | |
| Letter from New-Hudson Ltd. regarding production difficulties and delivery delays for Girling Brakes for the Bentley Axle. | 31th Jul 1936 | Box 120 \ 2 scan0045 | |
| Instruction to despatch a Phantom III gearbox to Automotive Products Ltd. to be fitted with a Lockheed Master Cylinder. | 4th Aug 1936 | Box 120 \ 2 scan0046 | |
| Letter to Automotive Products Co. Ltd. regarding the dispatch of a Phantom III gearbox for an experimental hydraulic braking system. | 4th Aug 1936 | Box 120 \ 2 scan0047 | |
| Letter of complaint to New Hudson Ltd. regarding a supplied front axle fitted with Girling Brakes. | 13th Aug 1936 | Box 120 \ 2 scan0048 | |
| The second page of a letter suggesting a visit. | 13th Aug 1936 | Box 120 \ 2 scan0049 | |
| Requesting an order be sent to New Hudson Ltd. for brakes and front axles. | 13th Aug 1936 | Box 120 \ 2 scan0050 | |
| Letter from New-Hudson Ltd concerning modifications to sample Girling Brake assemblies. | 13th Aug 1936 | Box 120 \ 2 scan0051 | |
| With handwritten annotations regarding placing an order for brakes and front axles from New Hudson Ltd. | 13th Aug 1936 | Box 120 \ 2 scan0052 | |
| Letter from New Hudson Ltd. regarding the supply and cost of front/rear axles and Girling brakes. | 28th Apr 1936 | Box 120 \ 2 scan0053 | |
| Letter from Automotive Products Company Ltd acknowledging receipt of a drawing for the Phantom III rear brake mechanism. | 19th Aug 1936 | Box 120 \ 2 scan0054 | |
| Letter to Automotive Products Ltd. about sending updated drawings for brake levers and brake shoes. | 20th Aug 1936 | Box 120 \ 2 scan0055 | |
| Letter from New-Hudson Ltd. proposing a meeting to discuss Girling Brakes fitted to Bentley Axles. | 19th Aug 1936 | Box 120 \ 2 scan0056 | |
| Letter to Messrs. New-Hudson Ltd. postponing a visit as Mr. Martindale is on holiday. | 20th Aug 1936 | Box 120 \ 2 scan0057 | |
| Letter to New-Hudson Ltd. proposing a date for a visit to inspect a car with axle and brake system issues. | 24th Aug 1936 | Box 120 \ 2 scan0058 | |
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