| Description | Date | Identifier | |
| Modification to Wraith wheels following issues with faulty riveting and clearance. | 9th Jan 1939 | Box 159 \ 3 scan0009 | |
| Letter from Dunlop regarding an issue with the processing of rims on a sample set of 4.00x16 disc wheels. | 9th Jan 1939 | Box 159 \ 3 scan0010 | |
| Letter from Dunlop Rubber Co. Ltd. discussing modifications to wheel shells for improved spoke head clearance. | 10th Jan 1939 | Box 159 \ 3 scan0011 | |
| Letter from Dunlop Rubber Co. regarding special cover discs and experimental tubes for wire wheels. | 10th Jan 1939 | Box 159 \ 3 scan0012 | |
| Letter from Dunlop Rubber Co. acknowledging a previous letter and detailing follow-up actions and references. | 11th Jan 1939 | Box 159 \ 3 scan0013 | |
| Sending 5 steel wheels to Dunlop Ltd. to have new rims fitted. | 11th Jan 1939 | Box 159 \ 3 scan0014 | |
| Configuration of Dunlop wheels for the Wraith 'C' series. | 12th Jan 1939 | Box 159 \ 3 scan0015 | |
| Letter from Dunlop Rubber Co., Ltd. regarding modifications to 72V type wheel shells for Wraith and Bentley models. | 12th Jan 1939 | Box 159 \ 3 scan0016 | |
| Letter from Dunlop regarding the design and supply of experimental 72R wire wheels. | 14th Jan 1939 | Box 159 \ 3 scan0017 | |
| Letter to Dunlop Rim & Wheel Co. Ltd. regarding a revised drawing for a 16' wire wheel. | 16th Jan 1939 | Box 159 \ 3 scan0018 | |
| Letter to Dunlop Rubber Co. regarding a special tyre valve experiment and wheel specifications. | 16th Jan 1939 | Box 159 \ 3 scan0019 | |
| Despatch of 5 wheel discs to Dunlop Ltd. | 17th Jan 1939 | Box 159 \ 3 scan0020 | |
| Letter from Dunlop Rubber Co., Ltd. regarding the production of wheels with 5/8' valve holes. | 18th Jan 1939 | Box 159 \ 3 scan0021 | |
| Page 2 of a letter from Dunlop Rubber Co., Ltd. concerning a proposed type of valve. | 18th Jan 1939 | Box 159 \ 3 scan0022 | |
| Letter from Dunlop Rubber Co. regarding alterations to 72R wheel shells and a debit for surplus spoke liners. | 20th Jan 1939 | Box 159 \ 3 scan0023 | |
| Letter to Dunlop Rubber Co. Ltd. regarding a change-over to longer wheel shells and proposing to split a cost of £19.7.6d. | 21th Jan 1939 | Box 159 \ 3 scan0024 | |
| Letter to Dunlop Rubber Co. Ltd. returning photographs of wheels. | 27th Jan 1939 | Box 159 \ 3 scan0025 | |
| Letter from Dunlop Rubber Co. Ltd. confirming the despatch of wheels and explaining the return of 4.50x16 wheels. | 27th Jan 1939 | Box 159 \ 3 scan0026 | |
| Letter from Dunlop Rubber Co., Ltd. regarding the attachment of rubber chafing strips to wheel discs. | 30th Jan 1939 | Box 159 \ 3 scan0027 | |
| Letter from Dunlop Rim & Wheel Co. Ltd. regarding a modified drawing for a 72R type wire wheel. | 30th Jan 1939 | Box 159 \ 3 scan0028 | |
| Drawing of a Dunlop 72R wire wheel with dimensions and specifications. | 26th Jan 1939 | Box 159 \ 3 scan0029 | |
| Advice note from Dunlop Rubber Co. Ltd. regarding wheel discs fitted with rubber chafing straps. | 13th Jan 1939 | Box 159 \ 3 scan0030 | |
| Letter to Dunlop Rim & Wheel Co. Ltd. regarding an experimental set of wheels and the provision for balance weights. | 31th Jan 1939 | Box 159 \ 3 scan0031 | |
| Letter from Dunlop Rubber Co. Ltd. regarding the despatch of special tubes and the status of special wheels. | 8th Feb 1939 | Box 159 \ 3 scan0032 | |
| Letter from Dunlop Rubber Co. Ltd. confirming the despatch of experimental wire wheels. | 9th Feb 1939 | Box 159 \ 3 scan0033 | |
| Letter from Dunlop Rim & Wheel Co. Ltd. confirming the despatch of five modified 72R wire wheels. | 9th Feb 1939 | Box 159 \ 3 scan0034 | |
| Instructing the despatch of 5 wheel discs to Messrs. Dunlop Ltd. | 8th Mar 1939 | Box 159 \ 3 scan0035 | |
| Letter to Dunlop Rubber Co. Ltd. regarding the return and modification of 5 wheel discs. | 8th Feb 1939 | Box 159 \ 3 scan0036 | |
| Letter from Dunlop confirming they are awaiting the return of five wheel discs to be fitted with a rubber strip. | 9th Mar 1939 | Box 159 \ 3 scan0037 | |
| Letter from Dunlop Rubber Co. Ltd. regarding the fitting of rubber strips to wheel discs and apologising for a delay. | 23th Mar 1939 | Box 159 \ 3 scan0038 | |
| Letter from Dunlop Rubber Co. regarding the fitment of a 4.50.E section rim for a tyre. | 17th Apr 1939 | Box 159 \ 3 scan0039 | |
| Letter from Dunlop Rubber Co. about an amendment to an order for wheel rims. | 17th Apr 1939 | Box 159 \ 3 scan0040 | |
| Letter to The Dunlop Rubber Co. Ltd. enclosing a duplicate blueprint of rim block, Piece No. GB.3854. | 20th Apr 1939 | Box 159 \ 3 scan0041 | |
| Letter to Dunlop Rubber Co. Ltd. regarding a change from 'D' type to 'E' type rims for Bentley wire wheels. | 20th Apr 1939 | Box 159 \ 3 scan0042 | |
| Letter from Dunlop Rubber Co. Ltd. regarding a telephone conversation about accepting a specific rim size for a Bentley production order and a drawing discrepancy. | 20th Apr 1939 | Box 159 \ 3 scan0043 | |
| Letter to Dunlop Rubber Co. Ltd. returning their drawing CDS.1551. | 21th Apr 1939 | Box 159 \ 3 scan0044 | |
| Letter from Dunlop Rubber Co., Ltd. concerning the production timeline for special wheels, rims, and tyres. | 21th Apr 1939 | Box 159 \ 3 scan0045 | |
| Letter from Dunlop Rubber Co., Ltd. regarding the lightening of a 4.50x16 rim and confirming no further action is required. | 21th Apr 1939 | Box 159 \ 3 scan0046 | |
| Blueprint for a 4.50 inch D Super Low Pressure Rim. | 8th Mar 1932 | Box 159 \ 3 scan0047 | |
| Technical drawing for a 4.50E E.L.P. wheel rim. | 26th May 1938 | Box 159 \ 3 scan0048 | |
| Letter from Dunlop Rubber Co. Ltd. regarding a drawing correction for modified rim dimensions. | 24th Apr 1939 | Box 159 \ 3 scan0049 | |
| Letter from Dunlop Rubber Co. Ltd. requesting Rolls-Royce send five 5.00x16 wheels to be fitted with 6.00x16 rims. | 27th Apr 1939 | Box 159 \ 3 scan0050 | |
| Letter from Dunlop Rubber Co. confirming a hold on drilling balance weight holes for Bentley wheels. | 1st May 1939 | Box 159 \ 3 scan0051 | |
| Letter to Dunlop Rubber Co. regarding a delay in sending 5 x 16 wheels. | 2nd May 1939 | Box 159 \ 3 scan0052 | |
| Letter to Dunlop Rubber Co. Ltd. regarding a wire wheel problem and a decision to avoid using 'E' type rims. | 5th May 1939 | Box 159 \ 3 scan0053 | |
| Letter from Dunlop Rubber Co. discussing fixed rubber strips on discs and non-standard tube valves. | 13th May 1939 | Box 159 \ 3 scan0054 | |
| Letter to Dunlop Rubber Co. Ltd. regarding a decision on the use of outer wheel discs. | 15th May 1939 | Box 159 \ 3 scan0055 | |
| Letter from Dunlop Rim & Wheel Co. regarding a 4.50E-16' rim and balance weight bolts. | 16th May 1939 | Box 159 \ 3 scan0056 | |
| Letter from Dunlop Rim & Wheel Co. regarding a sample 'E' section rim and a meeting that took place. | 22th May 1939 | Box 159 \ 3 scan0057 | |
| Letter from Dunlop Rim & Wheel Co. Ltd. regarding an agreement to supply a new section rim and pausing work on balancing details. | 18th May 1939 | Box 159 \ 3 scan0058 | |
| Letter from Dunlop proposing a new 6.00F-16 inch rim and tyre equipment arrangement for a plain disc wheel. | 22th May 1939 | Box 159 \ 3 scan0059 | |
| Blueprint for a Dunlop plain disc wheel. | 12th May 1939 | Box 159 \ 3 scan0060 | |
| Request to Dunlop Rubber Co. Ltd. for a sketch showing the outside shape of two specific tyre sections. | 22th May 1939 | Box 159 \ 3 scan0061 | |
| The status of a sample wire wheel from Sound Coventry. | 22th May 1939 | Box 159 \ 3 scan0062 | |
| Arrangements with the Dunlop Co. concerning the use of balance weights and 72 spoke wheels for the Bentley V. | 24th May 1939 | Box 159 \ 3 scan0063 | |
| Letter from Dunlop Rubber Co. regarding the substitution of their rims on a plain disc wheel, confirming production is proceeding. | 5th Jun 1939 | Box 159 \ 3 scan0064 | |
| Letter to Dunlop Rubber Co. Ltd. regarding a drawing adjustment for 6' rim wheels. | 7th Jun 1939 | Box 159 \ 3 scan0065 | |
| Letter from Dunlop Rubber Co. Ltd. regarding amendments to wheel drawings and the supply of sample wheels. | 12th Jun 1939 | Box 159 \ 3 scan0066 | |
| Letter to Dunlop Rubber Co. Ltd. enclosing a copy of a letter sent to Mr. Sharpe about fixing rims to wheels for testing. | 15th Jun 1939 | Box 159 \ 3 scan0067 | |
| Letter to Dunlop concerning the supply and specifications of various wheel rims. | 15th Jun 1939 | Box 159 \ 3 scan0068 | |
| Dispatch of 10 steel wheels to Messrs. Dunlop, Coventry. | 15th Jun 1939 | Box 159 \ 3 scan0069 | |
| Letter from Dunlop Rim & Wheel Co. confirming technical details for the conversion of 5.00-16' and 5.50-16' wheels. | 16th Jun 1939 | Box 159 \ 3 scan0070 | |
| Letter from Dunlop Rubber Co. Ltd. regarding rim positioning, equipment priority, and rim availability. | 16th Jun 1939 | Box 159 \ 3 scan0071 | |
| Letter from Dunlop Rubber Co. Ltd. enclosing a print for 6.00x16 wheels, which are taking precedence over the 5.50x16 size. | 17th Jun 1939 | Box 159 \ 3 scan0072 | |
| Technical drawing of a Dunlop Plain Disc Wheel. | 1st Feb 1939 | Box 159 \ 3 scan0073 | |
| Letter to Dunlop Rim & Wheel Co. Ltd. detailing the results of stress tests on a Phantom III wheel rim. | 22th Jun 1939 | Box 159 \ 3 scan0074 | |
| Letter to Dunlop Rim & Wheel Co. Ltd. discussing stress analysis results of a wheel rim. | 22th Jun 1939 | Box 159 \ 3 scan0075 | |
| Letter to Dunlop Rubber Co. Ltd. requesting expedited delivery of rim wheels and providing instructions for Racing tyres. | 23th Jun 1939 | Box 159 \ 3 scan0076 | |
| Letter from Dunlop Rubber Co. Ltd. confirming the despatch of five special 5.50x16 and 6.00x16 wheels. | 28th Jun 1939 | Box 159 \ 3 scan0077 | |
| The receipt of Plain Disc Wheels from Dunlop Co. Ltd. and seeking clarification on payment. | 30th Jun 1939 | Box 159 \ 3 scan0078 | |
| Sending of wheels and Dunlops to be fitted with new rims. | 1st Jul 1939 | Box 159 \ 3 scan0079 | |
| Letter to Dunlop Rubber Co. Ltd. enquiring about the supply of 16' 'E' type wire wheels. | 3rd Jul 1939 | Box 159 \ 3 scan0080 | |
| Letter from Dunlop Rubber Co., Ltd. confirming the dispatch of five latest type 4.50x16 wheels. | 4th Jul 1939 | Box 159 \ 3 scan0081 | |
| Advice note from Dunlop Rubber Co. Ltd. for five black enamelled wire wheels. | 6th Jul 1939 | Box 159 \ 3 scan0082 | |
| Letter from Dunlops concerning wheels and rims. | 27th Jul 1939 | Box 159 \ 3 scan0083 | |
| Letter from Dunlop Rubber Co. concerning the production and testing of lightweight wheel rims for experimental purposes. | 28th Aug 1939 | Box 159 \ 3 scan0084 | |
| Letter to Dunlop Rubber Co. Ltd. regarding the machining and supply of wheel rims. | 30th Aug 1939 | Box 159 \ 3 scan0085 | |
| Letter from Dunlop Rubber Co. regarding a proposed modification to rims due to the suspension of deliveries. | 13th Sep 1939 | Box 159 \ 3 scan0086 | |
| Blueprint detailing a proposed valve hole for a 4.00 inch rim, model RS.0548. | 3rd Aug 1939 | Box 159 \ 3 scan0087 | |
| Technical drawing detailing the section of a 4.00-inch rim, including dimensions for standard and racing variants. | 5th Jan 1937 | Box 159 \ 3 scan0088 | |
| Letter to Dunlop Rubber Co. Ltd. regarding a modified 4' rim and single outer discs for a 17' wheel. | 14th Sep 1939 | Box 159 \ 3 scan0089 | |
| Letter from Dunlop Rubber seeking instruction on whether to proceed with an order for lightweight rims due to the 'European situation'. | 22th Sep 1939 | Box 159 \ 3 scan0090 | |
| Letter to Dunlop Rubber Co. Ltd. requesting to stop work on 5.50 x 16 lightweight rims due to the war. | 25th Sep 1939 | Box 159 \ 3 scan0091 | |
| Letter from Dunlop Rubber Co. regarding the supply of rims with a modified valve arrangement. | 9th Oct 1939 | Box 159 \ 3 scan0092 | |
| The status of 10 steel wheels sent to Messrs Dunlop Rim and Wheel Co. Ltd. for testing in France. | 16th Oct 1939 | Box 159 \ 3 scan0093 | |
| Responding to a query about the return of wheels, detailing their receipt and location. | 19th Oct 1939 | Box 159 \ 3 scan0094 | |
| Letter to Dunlop Rubber Co. Ltd. regarding the production of experimental pressed steel wheels. | 31th Oct 1939 | Box 159 \ 3 scan0095 | |
| Letter from Dunlop Rubber Co. Ltd. regarding their consideration of a letter about Pressed Steel Wheels. | 2nd Nov 1939 | Box 159 \ 3 scan0096 | |
| Letter from Dunlop Rubber Co. Ltd. explaining why modifying existing 4.50x16 pressed steel wheels is not feasible. | 3rd Nov 1939 | Box 159 \ 3 scan0097 | |
| Letter from Dunlop Rubber Co. regarding a proposed change in valve hole for well base rims for replacement wheels. | 6th Nov 1939 | Box 159 \ 3 scan0098 | |
| Blueprint detailing the valve hole for a 3.62 inch rim, part RSO549. | 29th Sep 1939 | Box 159 \ 3 scan0099 | |
| Detailed engineering drawing of a 3.62-inch rim section, including dimensions and associated tooling. | 5th Jan 1937 | Box 159 \ 3 scan0100 | |
| Letter to Dunlop Rubber Co. discussing issues with fitting new rims and changes to well base rims. | 7th Nov 1939 | Box 159 \ 3 scan0101 | |
| Letter to Dunlop Rubber Co. Ltd. regarding the exchange of wheel rims and requesting tyre specifications. | 9th Jan 1940 | Box 159 \ 3 scan0102 | |
| Letter from Dunlop Rubber Co. regarding difficulties with modifications and a query about tyres. | 11th Jan 1940 | Box 159 \ 3 scan0103 | |
| Requesting a tap for a 40-gallon oil drum for the Kestrel oil pump test rig. | 4th Sep 1940 | Box 159 \ 4 scan0001 | |
| Revival of the flat 12-cylinder engine and proposing a study of its characteristics. | 25th Oct 1939 | Box 159 \ 5 scan0001 | |
| Requesting a copy of the polar diagrams of bearing loads. | 30th Oct 1939 | Box 159 \ 5 scan0002 | |
| Experimental plug tests on service cars to study plug deterioration. | 22th Feb 1940 | Box 159 \ 5 scan0003 | |
| Requesting a price quote for petrol marine engines to compete against American engines. | 11th Mar 1940 | Box 159 \ 5 scan0004 | |
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