| Description | Date | Identifier | |
| Official order be sent to Messrs. Borg & Beck Co. Ltd. for parts already received. | 24th Jun 1937 | Box 129 \ 1 scan0206 | |
| Letter to Ben Hopkins regarding the supply of Cleveland Graphite Bronze clutch material for testing. | 25th Jun 1937 | Box 129 \ 1 scan0207 | |
| Meeting with Borg & Beck to discuss clutch costs. | 25th Jun 1937 | Box 129 \ 1 scan0208 | |
| Letter from Borg & Beck Company Ltd confirming a telephone conversation and arranging a meeting. | 25th Jun 1937 | Box 129 \ 1 scan0209 | |
| Letter from the Experimental Dept. to Messrs. Borg & Beck Co. Ltd. regarding a fault in 10' clutch assemblies. | 26th Jun 1937 | Box 129 \ 1 scan0210 | |
| Letter to Borg & Beck Ltd. concerning the purchase and pricing of clutch plates for the Phantom III. | 29th Jun 1937 | Box 129 \ 1 scan0211 | |
| Letter from Borg & Beck Company Ltd. concerning clutch plate deflection graphs for the Phantom III. | 1st Jul 1937 | Box 129 \ 1 scan0212 | |
| Deflection curve graph for a 13.5 inch compound cushion type driven plate with special Raybestos facings. | 29th Jun 1937 | Box 129 \ 1 scan0213 | |
| Deflection curve graph for a 13.5 inch compound cushion type driven plate, manufactured by the Long Co. U.S.A. | 29th Jun 1937 | Box 129 \ 1 scan0214 | |
| Order for 50 Thermoid Clutch rings from America. | 1st Jul 1937 | Box 129 \ 1 scan0215 | |
| Letter from Borg & Beck Company Ltd. regarding a fault found on 10' clutch assemblies. | 1st Jul 1937 | Box 129 \ 1 scan0216 | |
| Letter from clutch manufacturer Borg & Beck regarding the supply and pricing of 100 replacement clutch plates for Phantom III cars. | 1st Jul 1937 | Box 129 \ 1 scan0217 | |
| Letter from Borg & Beck Company Ltd. to W.A. Robotham Esq. regarding a revised quotation and the need for an early decision. | 1st Jul 1937 | Box 129 \ 1 scan0218 | |
| Short internal memo regarding information about Borg & Beck clutches. | 3rd Jul 1937 | Box 129 \ 1 scan0219 | |
| Letter to Borg & Beck Co. Ltd. discussing the performance curves and testing of clutch cushion springs. | 3rd Jul 1937 | Box 129 \ 1 scan0220 | |
| Letter from a clutch manufacturer discussing test results for different clutch facings on a Driven Plate for the Phantom III Chassis. | 5th Jul 1937 | Box 129 \ 1 scan0221 | |
| Letter to L.J. Loranger of Borg-Warner Corporation regarding invoices and unexpected costs for clutch plates. | 6th Jul 1937 | Box 129 \ 1 scan0222 | |
| Copy of an invoice for the sale and shipment of driven member assemblies. | 28th May 1937 | Box 129 \ 1 scan0223 | |
| Follow-up letter from Newton & Bennett Limited requesting an opinion on clutch plates previously supplied. | 7th Jul 1937 | Box 129 \ 1 scan0224 | |
| Letter to Messrs Newton & Bennett Ltd regarding a delay in testing flexible clutch plates. | 8th Jul 1937 | Box 129 \ 1 scan0225 | |
| Letter to The Borg & Beck Co. regarding a servo, patent situation, and clutch plates. | 13th Jul 1937 | Box 129 \ 1 scan0226 | |
| Notes for a visit to Mr. Emmott of Borg & Beck regarding the history and development of the Phantom III clutch. | 14th Jul 1937 | Box 129 \ 1 scan0227 | |
| Clutch plate pricing negotiations and supplier performance issues with Borg & Beck. | 14th Jul 1937 | Box 129 \ 1 scan0228 | |
| Letter to Messrs. Borg & Beck Limited regarding a quotation for 500 Phantom III clutch centre plates. | 16th Jul 1937 | Box 129 \ 1 scan0229 | |
| Letter from Long Manufacturing Division to Mr. W. A. Robotham regarding a cost misunderstanding for ten driven members. | 20th Jul 1937 | Box 129 \ 1 scan0230 | |
| Advice note from Borg & Beck Co., Ltd. for the dispatch of driven plate assemblies. | 26th Jul 1937 | Box 129 \ 1 scan0231 | |
| Letter to Messrs. Borg & Beck Company Ltd. regarding the supply of clutch and Bentley plates. | 27th Jul 1937 | Box 129 \ 1 scan0232 | |
| Order to be placed with Borg & Beck for Bentley clutch plates. | 27th Jul 1937 | Box 129 \ 1 scan0233 | |
| The despatch of Ph.III clutch hubs to Borg & Beck Ltd. | 27th Jul 1937 | Box 129 \ 1 scan0234 | |
| Specification table for clutch plates used in various chassis and unit configurations. | 28th Jul 1937 | Box 129 \ 1 scan0235 | |
| Comparison of specifications for P.III, 25/30, and Bentley models, focusing on clutch and flywheel details. | 1st Jul 1937 | Box 129 \ 1 scan0236 | |
| Letter to Borg & Beck Ltd. concerning a potential change in spline size for 10' and 11' clutches. | 4th Aug 1937 | Box 129 \ 1 scan0237 | |
| Letter from Borg & Beck Company Ltd regarding a potential change to driven plate hub splines for clutches. | 5th Aug 1937 | Box 129 \ 1 scan0238 | |
| Letter to Borg & Beck Ltd. concerning 10.A.3 and 11.A.3 clutches and a now-abandoned revised gearbox design. | 6th Aug 1937 | Box 129 \ 1 scan0239 | |
| Letter to Borg & Beck Co. Ltd. regarding a delay in supplying hubs for Phantom III clutches and a request for a quotation. | 10th Aug 1937 | Box 129 \ 1 scan0240 | |
| Letter to Borg & Beck Co. Ltd. concerning excessive run-out on tested Phantom III clutch driven plates. | 12th Aug 1937 | Box 129 \ 1 scan0241 | |
| Letter discussing the return of five damaged plates, their runout, balance, and a request for a new facing. | 12th Aug 1937 | Box 129 \ 1 scan0242 | |
| Letter from clutch manufacturer Borg & Beck regarding runout and balance issues with driven plates for the Phantom III model. | 13th Aug 1937 | Box 129 \ 1 scan0243 | |
| Visit to Borg & Beck Works regarding cracking issues with Phantom III clutch facings during drilling. | 17th Aug 1937 | Box 129 \ 1 scan0244 | |
| Delay in steel supplies for cushion springs and plans for replacements on customer cars. | 17th Aug 1937 | Box 129 \ 1 scan0245 | |
| Letter concerning the supply of friction material ('Clevite') for a flywheel and pressure plate assembly. | 18th Aug 1937 | Box 129 \ 1 scan0246 | |
| Technical drawing of a clutch steel disc assembly, detailing its components and dimensions. | 3rd Apr 1937 | Box 129 \ 1 scan0247 | |
| Faults found during the investigation of Borg & Beck clutches, including issues with pressure plates and centre plates. | 19th Aug 1937 | Box 129 \ 1 scan0248 | |
| Success of Thermoid clutch linings and the decision to fit them to 25/30 and Bentley models. | 23th Aug 1937 | Box 129 \ 1 scan0249 | |
| Issues with Borg & Beck clutches, including plate flatness, run-out, and packing for transit. | 23th Aug 1937 | Box 129 \ 1 scan0250 | |
| Letter to Messrs Borg & Beck Ltd. regarding run-out issues on 10' and 11' clutch plates, likely caused by damage during transit. | 23th Aug 1937 | Box 129 \ 1 scan0251 | |
| The Phantom III Clutch, detailing methods to accommodate different clutch plate thicknesses. | 24th Aug 1937 | Box 129 \ 1 scan0252 | |
| Letter from Ferodo Limited confirming a clutch spinning rig demonstration and testing of clutch facings. | 24th Aug 1937 | Box 129 \ 1 scan0253 | |
| Letter from Borg & Beck Company Ltd. regarding the packing of 10' and 11' clutches. | 25th Aug 1937 | Box 129 \ 1 scan0254 | |
| Unexpected high cost for Long clutch plates which solved the Ph.III clutch problem. | 28th Aug 1937 | Box 129 \ 1 scan0255 | |
| Letter to Ferodo Ltd. detailing the results of bursting tests on various clutch facings. | 28th Aug 1937 | Box 129 \ 1 scan0256 | |
| Letter discussing test results for different facing materials and requesting further samples for road tests. | 28th Aug 1937 | Box 129 \ 1 scan0257 | |
| Letter from Ferodo Limited regarding bursting tests and description of clutch facings. | 31th Aug 1937 | Box 129 \ 1 scan0258 | |
| Telegram received by telephone confirming metallic facings were shipped via Meadows on the Franconia. | 31th Aug 1937 | Box 129 \ 1 scan0259 | |
| To Mr. Chandler regarding a faulty Spring Plate from a Borg & Beck Clutch with a request to address the issue with the supplier. | 1st Sep 1937 | Box 129 \ 1 scan0260 | |
| Order for six clutch plates to be passed to the Long Manufacturing Co. | 2nd Sep 1937 | Box 129 \ 1 scan0261 | |
| Sending an 11-inch clutch plate with loose linings to Messrs Borg & Beck for inspection. | 2nd Sep 1937 | Box 129 \ 1 scan0262 | |
| Letter to Borg and Beck regarding the return of a faulty 11' clutch plate for inspection. | 2nd Sep 1937 | Box 129 \ 1 scan0263 | |
| Requesting the return of an 11' clutch plate to Borg and Beck in Leamington Spa. | 2nd Sep 1937 | Box 129 \ 1 scan0264 | |
| Covering order for a consignment of 18 Borg & Beck 10' driven plates. | 2nd Sep 1937 | Box 129 \ 1 scan0265 | |
| Letter to Borg & Beck Co. Ltd. regarding 10' and 11' clutches and Thermoid facings. | 2nd Sep 1937 | Box 129 \ 1 scan0266 | |
| Letter from Borg & Beck Company Limited regarding 10' and 11' clutches and changing friction facings. | 6th Sep 1937 | Box 129 \ 1 scan0267 | |
| Letter from Borg & Beck Company Limited discussing moulded facings, driven plates, and a quotation for modifications. | 6th Sep 1937 | Box 129 \ 1 scan0268 | |
| Quotation from Borg & Beck Company Limited for modifying driven plates. | 6th Sep 1937 | Box 129 \ 1 scan0269 | |
| Letter from Borg & Beck Company Limited regarding the price and supply of 10' and 11' clutches with Thermoid facings. | 1st Sep 1937 | Box 129 \ 1 scan0270 | |
| Quotation from Borg & Beck Company Limited for a Model 10.A3 Multi-Spring Single Dry Plate Clutch. | 1st Sep 1937 | Box 129 \ 1 scan0271 | |
| Quotation from Borg & Beck Company Limited for a Model 11.A3 Multi-Spring Single Dry Plate Clutch. | 1st Sep 1937 | Box 129 \ 1 scan0272 | |
| Letter to Borg & Beck Co. Ltd. acknowledging correspondence regarding 10' and 11' clutches. | 7th Sep 1937 | Box 129 \ 1 scan0273 | |
| Letter to a supplier detailing manufacturing faults found in recently received plates. | 7th Sep 1937 | Box 129 \ 1 scan0274 | |
| Letter from clutch manufacturer Borg & Beck regarding complaints about 13½ inch Long Type Driven Plates. | 8th Sep 1937 | Box 129 \ 1 scan0275 | |
| Letter from Borg & Beck Company Ltd. confirming a telephone conversation regarding an order for clutches and facings. | 8th Sep 1937 | Box 129 \ 1 scan0276 | |
| Letter from Borg & Beck Company Ltd. regarding the delayed completion of a rig for bursting tests on clutch facings. | 10th Sep 1937 | Box 129 \ 1 scan0277 | |
| Letter from Borg & Beck Company Limited acknowledging blueprints for 13½' Driven Plates for the Phantom III application and suggesting a follow-up meeting. | 10th Sep 1937 | Box 129 \ 1 scan0278 | |
| Letter to Messrs. Borg & Beck Co. Ltd. attaching blueprints related to Driven Plate Assemblies for order 47667. | 8th Sep 1937 | Box 129 \ 1 scan0279 | |
| Letter to Borg & Beck Co. Ltd. regarding the change to Thermoid facings on 10' and 11' clutches. | 10th Sep 1937 | Box 129 \ 1 scan0280 | |
| Letter to Borg & Beck Ltd. regarding bursting tests on a cracked Thermoid plate and arranging a meeting. | 13th Sep 1937 | Box 129 \ 1 scan0281 | |
| Letter from clutch manufacturer Borg & Beck regarding order details, product testing, and delivery schedules. | 15th Sep 1937 | Box 129 \ 1 scan0282 | |
| Continuation letter from Borg & Beck Company Limited regarding the production of a size plate on a hand-made basis. | 15th Sep 1937 | Box 129 \ 1 scan0283 | |
| Letter to Borg & Beck Ltd. regarding poor quality plates and arranging a visit for inspection. | 16th Sep 1937 | Box 129 \ 1 scan0284 | |
| Clutch slipping issues with the facing material on Bentley and 25/30 models. | 16th Sep 1937 | Box 129 \ 1 scan0285 | |
| Letter from Borg & Beck Company Ltd. regarding a Thrust Spring Chart and Detail Drawings for a Phantom III clutch component. | 18th Sep 1937 | Box 129 \ 1 scan0286 | |
| Letter from Borg & Beck Company Ltd. regarding production difficulties and proposed changes to clutch friction facings. | 20th Sep 1937 | Box 129 \ 1 scan0287 | |
| The initial testing of Cleveland Graphite Bronze clutch facings for older clutch models. | 28th Sep 1937 | Box 129 \ 1 scan0288 | |
| Road test report on new clutch facings from Cleveland Graphite Bronze Co. fitted to car 17-G-4. | 28th Sep 1937 | Box 129 \ 1 scan0289 | |
| Letter from the Cleveland Graphite Bronze Co. regarding the design and material for flywheel and pressure plate friction facings. | 18th Aug 1937 | Box 129 \ 1 scan0290 | |
| Letter to the Cleveland Graphite Bronze Co. discussing bearing material tests and results. | 28th Sep 1937 | Box 129 \ 1 scan0291 | |
| Letter to Ben F. Hopkins regarding his visit to Derby and a game of Snooker. | 28th Sep 1937 | Box 129 \ 1 scan0292 | |
| Letter to a supplier regarding slipping clutches and the testing of spring poundage for 10' and 11' models. | 29th Sep 1937 | Box 129 \ 1 scan0293 | |
| Analysis and comparison of a hard-rolled Carbon Steel sample, with a conclusion on its suitability. | 30th Sep 1937 | Box 129 \ 1 scan0294 | |
| Letter from Borg & Beck Company Ltd. regarding the supply of steel for Phantom III clutch components. | 27th Sep 1937 | Box 129 \ 1 scan0295 | |
| Use of Borg & Beck clutches versus in-house designs for Bentley, 20/25, and Wraith models. | 27th Feb 1935 | Box 129 \ 2 scan0001 | |
| Letter from Hudson Motor Car Company discussing the design and performance of their cork-inserted wet clutch compared to a dry clutch. | 19th Jun 1934 | Box 129 \ 2 scan0002 | |
| Page 2 of a letter to Mr. Robotham regarding a fancy pedal arrangement. | 19th Jun 1934 | Box 129 \ 2 scan0003 | |
| To Roy requesting an order for a Borg & Beck 11A1G clutch. | 21th Sep 1934 | Box 129 \ 2 scan0004 | |
| Specification sheet for the Borg & Beck Clutch, Type 11 A1-G. | 22th Jan 1934 | Box 129 \ 2 scan0005 | |
| Technical drawing of a Borg & Beck clutch assembly. | 22th Jan 1934 | Box 129 \ 2 scan0006 | |
| Confirming receipt of a Pedal Date Sheet from Borg & Beck Co. Ltd. | 1st Oct 1934 | Box 129 \ 2 scan0007 | |
| Pedal recommendations and specifications for a Borg & Beck clutch system. | 28th Sep 1934 | Box 129 \ 2 scan0008 | |
| Letter from Borg & Beck Company regarding a sample clutch and test results. | 12th Nov 1934 | Box 129 \ 2 scan0009 | |
| Letter to The Borg & Beck Company Ltd. concerning an 11-inch clutch test. | 14th Nov 1934 | Box 129 \ 2 scan0010 | |
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