| Description | Date | Identifier | |
| Letter to J. Lucas Ltd. discussing 'Roko' cable sleeving samples and enclosing a blueprint. | 12th Jan 1939 | Box 168 \ 1 img331 | |
| Letter to J. Lucas Ltd. regarding 'Roko' cable sleeving samples and dynamo bracket drawings. | 12th Jan 1939 | Box 168 \ 1 img332 | |
| Letter from Joseph Lucas Limited regarding the supply of 'Roco product' and an Ammeter. | 18th Jan 1940 | Box 168 \ 1 img333 | |
| Requesting an order for 10 yards of waterproof 'Roco' sleeving from Messrs. Lucas. | 31th Jan 1940 | Box 168 \ 1 img334 | |
| Letter to Lucas Ltd. concerning an order for 'Roco' product material for testing. | 31th Jan 1940 | Box 168 \ 1 img335 | |
| Letter of apology to Mr. Lucas of J. Lucas Ltd. for being left unattended during a visit to the works. | 5th Sep 1940 | Box 168 \ 1 img336 | |
| File note cross-referencing an order for cables from A.T. Speedometer Co. | 10th Oct 1940 | Box 168 \ 1 img337 | |
| Distributing blueprints for a modified Bentley V wiring layout to solve an overheating issue. | 16th Mar 1941 | Box 168 \ 1 img338 | |
| Requesting a supply of B.I. Neoprene H.T. cable. | 11th Mar 1941 | Box 168 \ 1 img339 | |
| Engine misfiring caused by fluid contamination on high-tension electrical components. | 19th Jul 1941 | Box 168 \ 1 img340 | |
| Inspection report on a Phantom III Ignition Governor and Distributor, detailing issues with lubrication, corrosion, and a proposed design modification. | 14th Aug 1936 | Box 168 \ 2 img001 | |
| Authorising the despatch of Delco Remy parts for a Bentley chassis being tested in France. | 24th Sep 1936 | Box 168 \ 2 img002 | |
| Dispatch of replacement Delco-Remy distributor parts for testing in France. | 25th Sep 1936 | Box 168 \ 2 img003 | |
| Standardisation sheet for the 25/30 HP Chassis 'Peregrine' type distributor. | 30th Sep 1936 | Box 168 \ 2 img004 | |
| Requesting a design drawing for the standardisation of Bentley Delso-Remy ignition distributors for cost estimation. | 30th Sep 1936 | Box 168 \ 2 img005 | |
| Letter to Messrs. Delco Remy & Hyatt Ltd. requesting a dimensioned drawing of distributors and a quote for a quantity of 200. | 1st Oct 1936 | Box 168 \ 2 img006 | |
| Letter from the Managing Director of Delco-Remy & Hyatt Ltd. to W.A. Robotham arranging a lunch meeting in Derby. | 1st Oct 1936 | Box 168 \ 2 img007 | |
| Brief typed letter inviting W.O. Kennington to lunch on Monday. | 2nd Oct 1936 | Box 168 \ 2 img008 | |
| Quotation from Delco-Remy & Hyatt Ltd. for a 656.R type ignition distributor, including advance curve specifications and quantity-based pricing. | 6th Oct 1933 | Box 168 \ 2 img009 | |
| Letter from Delco-Remy & Hyatt Ltd. to Rolls-Royce detailing contract terms for supplied equipment. | 2nd Oct 1936 | Box 168 \ 2 img010 | |
| From Rm. to E. regarding Kennington's return from the States with answers to a questionnaire. | 2nd Oct 1936 | Box 168 \ 2 img011 | |
| Drawing of a Delco Remy distributor for standardisation on the Bentley chassis. | 6th Oct 1936 | Box 168 \ 2 img012 | |
| Letter from Delco-Remy & Hyatt Ltd. regarding a high tension cable from America, a quotation, and a potential meeting. | 6th Oct 1936 | Box 168 \ 2 img013 | |
| Letter to Delco-Remy & Hyatt Ltd. regarding a quotation and distributor ignition advance curves. | 8th Oct 1936 | Box 168 \ 2 img014 | |
| Letter from Joseph Lucas Limited regarding the despatch of two distributor cap mouldings made from Rockite non-tracking powder. | 28th Aug 1936 | Box 168 \ 2 img015 | |
| Test report on a modified H.T. ignition rotor, scheme 922. | 3rd Oct 1936 | Box 168 \ 2 img016 | |
| Ignition governor characteristics for a Bentley IFI B.III No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img017 | |
| Specifying the ignition governor characteristics for the Bentley B.III No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img018 | |
| Ignition characteristics and advance settings for the Bentley III, No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img019 | |
| Clarifying specifications for the 25/30 Distributor, including the H.T. rotor and head engraving. | 13th Oct 1936 | Box 168 \ 2 img020 | |
| Replying to a query about a phenomenon observed with H.T. distributor rotors. | 3rd Nov 1936 | Box 168 \ 2 img021 | |
| Ignition governor characteristics for the B.III No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img022 | |
| Ignition governor characteristics for the Bentley IFI, B.III No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img023 | |
| Table of ignition governor characteristics for the Bentley B.III No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img024 | |
| Ignition characteristics for a Bentley B.III No.2 unit. | 4th Feb 1938 | Box 168 \ 2 img025 | |
| Service manual page detailing the procedure for synchronizing Delco-Remy distributors using specific tools. | 4th Feb 1938 | Box 168 \ 2 img026 | |
| Experimental trial for a new commutator-type 'make and break' ignition distributor. | 2nd Nov 1938 | Box 168 \ 3 img001 | |
| Letter to Delco-Remy about a serious issue with distributors causing rapid wear on 25/30 HP cars. | 4th Nov 1938 | Box 168 \ 3 img002 | |
| Letter from Delco-Remy & Hyatt Ltd. to Mr. W.A. Robotham regarding an alarming matter to be investigated. | 5th Nov 1938 | Box 168 \ 3 img003 | |
| Letter from a supplier discussing the performance of a standard rubbing block material versus the specified Tufnol material. | 7th Nov 1938 | Box 168 \ 3 img004 | |
| Letter addressing an issue of cam wear on a Tufnol rubbing block, suggesting a return to the standard part. | 7th Nov 1938 | Box 168 \ 3 img005 | |
| Letter to Delco-Remy & Hyatt Ltd. regarding the standardized specification and hardness of a distributor cam. | 9th Nov 1938 | Box 168 \ 3 img006 | |
| Page two of a letter regarding a request for a supply of cams with the correct Brinell hardness due to previous failures. | 9th Nov 1930 | Box 168 \ 3 img007 | |
| Letter from the Chairman of Delco-Remy & Hyatt Ltd. providing feedback on a Rolls Bentley car. | 10th Nov 1938 | Box 168 \ 3 img008 | |
| Letter from a supplier discussing a reported failure of a distributor cam and its material properties. | 10th Nov 1938 | Box 168 \ 3 img009 | |
| Letter detailing production difficulties with Tufnol rubbing blocks and cam surface hardness, and requesting a distributor specification. | 11th Nov 1938 | Box 168 \ 3 img010 | |
| Letter to Delco-Remy & Hyatt Ltd. discussing the development and failures of a distributor product. | 11th Nov 1938 | Box 168 \ 3 img011 | |
| Letter to Delco-Remy & Hyatt Ltd. regarding production difficulties with a 9-cylinder aircraft engine cam and failures of a high output coil. | 11th Nov 1938 | Box 168 \ 3 img012 | |
| Private letter concerning a production issue with distributor cam hardness. | 11th Nov 1938 | Box 168 \ 3 img013 | |
| Letter to Delco-Remy & Hyatt Ltd. discussing the development and issues with a distributor. | 11th Nov 1938 | Box 168 \ 3 img014 | |
| Letter to Delco-Remy & Hyatt Ltd. regarding issues with a 9-cylinder aircraft engine cam and a high output coil. | 11th Nov 1938 | Box 168 \ 3 img015 | |
| Parts list and blueprint request for a Bentley Co. crankcase and bearings, section 5000. | 15th Nov 1938 | Box 168 \ 3 img016 | |
| Letter from a supplier regarding a disagreement over soft cams and proposing to supply hardened replacements. | 15th Nov 1938 | Box 168 \ 3 img017 | |
| Letter regarding the supply and heat treatment of cams, addressing potential distortion and extra costs. | 15th Nov 1938 | Box 168 \ 3 img018 | |
| Scheme and parts list for a Commutator Brecker and Ignition Distributor modification. | 15th Nov 1938 | Box 168 \ 3 img019 | |
| Parts list and instructions for assembling brush components, referencing specific drawings. | 15th Nov 1938 | Box 168 \ 3 img020 | |
| Letter from Delco-Remy & Hyatt Ltd. acknowledging receipt of correspondence for an absent Mr. Kennington. | 15th Nov 1938 | Box 168 \ 3 img021 | |
| Letter from Delco-Remy & Hyatt Ltd. regarding the despatch of cams and shafts for hardness checking. | 15th Nov 1938 | Box 168 \ 3 img022 | |
| Investigation into scored cams on Delco Distributors and recommendations for hardness testing. | 18th Nov 1938 | Box 168 \ 3 img023 | |
| Letter to Delco-Remy & Hyatt Ltd. discussing the hardness testing and specifications for distributor cams. | 18th Nov 1938 | Box 168 \ 3 img024 | |
| Requesting the forwarding of 16 distributor cams to Delco Remy Hyatt Limited after testing. | 18th Nov 1938 | Box 168 \ 3 img025 | |
| Letter from a supplier discussing potential delivery delays and solutions for a small batch of cams and shafts. | 19th Nov 1938 | Box 168 \ 3 img026 | |
| Letter to Delco Remy & Hyatt Ltd. regarding experimentation on the hardening of cams. | 21th Nov 1938 | Box 168 \ 3 img027 | |
| Requesting the forwarding of distributor cams to Delco Remy Hyatt Limited. | 22th Nov 1938 | Box 168 \ 3 img028 | |
| Return of distributor cams to Messrs Delco Remy Hyatt Limited after testing. | 24th Nov 1938 | Box 168 \ 3 img029 | |
| Issues with Delco distributor cam hardness for the Wraith model. | 24th Nov 1938 | Box 168 \ 3 img030 | |
| Development, staffing and testing of the Delco-Remy distributor. | 28th Nov 1938 | Box 168 \ 3 img031 | |
| Letter from Delco-Remy & Hyatt Ltd. enclosing a service parts list bulletin for distributor type No.656 R.B. | 29th Nov 1938 | Box 168 \ 3 img032 | |
| Special Delco bulletin listing service parts for a 656 R.B. distributor. | 29th Nov 1938 | Box 168 \ 3 img033 | |
| Special Delco Bulletin listing various parts with their corresponding part numbers and quantities. | 30th Nov 1938 | Box 168 \ 3 img034 | |
| Request to issue a covering order for 6 contact arms to part No.813238, which were previously ordered verbally. | 30th Nov 1938 | Box 168 \ 3 img035 | |
| Requesting a change of distributor from Delco-Remy to an R.R. type on chassis 8.B.5. | 1st Dec 1938 | Box 168 \ 3 img036 | |
| Instructions for modifying ignition distributors on Wraith engines, listing parts to be fitted and removed. | 2nd Dec 1938 | Box 168 \ 3 img037 | |
| List of parts and an instruction to modify a distributor base. | 5th Dec 1938 | Box 168 \ 3 img038 | |
| Instructions for forwarding distributor cams to Messrs. Delco Remy and Hyatt Ltd. | 5th Dec 1938 | Box 168 \ 3 img039 | |
| Letter from Delco-Remy & Hyatt Ltd. regarding an order for distributors, cam hardness, and material supplies. | 5th Dec 1938 | Box 168 \ 3 img040 | |
| Letter discussing the supply of special coils and investigating costs for die-cast versus ordinary sand castings. | 7th Dec 1938 | Box 168 \ 3 img041 | |
| Requesting the return of two cam assemblies to Messrs. Delco Remy & Hyatt Ltd. due to a softness issue. | 7th Dec 1938 | Box 168 \ 3 img042 | |
| Return of 30 cam assemblies due to failing hardness tests. | 7th Dec 1938 | Box 168 \ 3 img043 | |
| Letter to Delco-Remy & Hyatt Ltd. regarding the return of rejected shaft assemblies and cams due to failed Brinell hardness tests. | 7th Dec 1938 | Box 168 \ 3 img044 | |
| Letter to Delco-Remy & Hyatt Ltd. regarding issues with a distributor and halting production. | 8th Dec 1938 | Box 168 \ 3 img045 | |
| Revised drive arrangement for a distributor with a Lucas governor for Wraith and Bentley models. | 14th Dec 1938 | Box 168 \ 3 img046 | |
| Letter from Delco-Remy & Hyatt Ltd. regarding the potential supply of ignition equipment. | 15th Dec 1938 | Box 168 \ 3 img047 | |
| Letter from a supplier regarding the reconciliation of despatched and returned cams and shafts. | 22th Dec 1938 | Box 168 \ 3 img048 | |
| The lubrication of contact breaker cams for all chassis. | 21th Dec 1938 | Box 168 \ 3 img049 | |
| Request to obtain two 662W type distributors from Messrs. Delco-Remy & Hyatt Ltd for an 8-cylinder engine. | 28th Dec 1938 | Box 168 \ 3 img050 | |
| Letter to Delco Remy & Hyatt Ltd. discussing faulty and damaged cams. | 30th Dec 1938 | Box 168 \ 3 img051 | |
| Letter regarding missing cams and the despatch of a replacement baton of 51 cams. | 30th Dec 1938 | Box 168 \ 3 img052 | |
| Specification for the overhaul of the 9.B.V. B.V. No.4 unit in preparation for a 15,000-mile test. | 31th Dec 1936 | Box 168 \ 3 img053 | |
| Numbered list of specifications for various vehicle components and systems to be fitted. | 31th Dec 1938 | Box 168 \ 3 img054 | |
| Specification for upgrading a B.V. No.3 engine unit for installation into a 3.B.50 chassis. | 31th Dec 1938 | Box 168 \ 3 img055 | |
| Follow-up letter from a supplier requesting a decision on the further supply of ignition equipment. | 6th Jan 1939 | Box 168 \ 3 img056 | |
| Letter to Delco Remy & Hyatt Ltd. regarding a decision to change to an R.A. distributor, cancelling the need for further supplies. | 9th Jan 1939 | Box 168 \ 3 img057 | |
| The re-assembly specification for a Wraith III No.9 engine into chassis 3.B.50. | 13th Jan 1939 | Box 168 \ 3 img058 | |
| List of technical updates including an induction system, distributor, coupling, and camwheel. | 13th Jan 1939 | Box 168 \ 3 img059 | |
| Modifications to the C.I. Conventional 8 distributor drive. | 19th Jan 1939 | Box 168 \ 3 img060 | |
| Ignition distributor failures on the Phantom III chassis and proposing modifications to the distributor head moulding. | 21th Jan 1939 | Box 168 \ 3 img061 | |
| Return of eight distributor shaft assemblies to Delco Remy and Hyatt due to cam softness. | 24th Jan 1939 | Box 168 \ 3 img062 | |
| The return of rejected Delco Remy distributor shafts due to cam softness. | 24th Jan 1939 | Box 168 \ 3 img063 | |
| New scheme for an eight-point distributor for a conventional 8-cylinder engine, incorporating a Lucas Governor. | 24th Jan 1939 | Box 168 \ 3 img064 | |
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