| Description | Date | Identifier | |
| Letter from India Tyre & Rubber Co. discussing the suitability of different tyre types for a new car, comparing stability and noise. | 9th Mar 1936 | Box 157 \ 6 scan0017 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding the testing and supply of different tyre sizes and treads. | 13th Mar 1936 | Box 157 \ 6 scan0018 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding stability tests with wider wheel rims. | 16th Mar 1936 | Box 157 \ 6 scan0019 | |
| Letter from a tyre supplier regarding the schedule for manufacturing and shipping test tyres and wheels. | 16th Mar 1936 | Box 157 \ 6 scan0020 | |
| Letter from India Tyre & Rubber Company discussing various tyre options, weights, and production timelines. | 17th Mar 1936 | Box 157 \ 6 scan0021 | |
| Letter from India Tyre & Rubber Co. Ltd. discussing wheel and tyre rim specifications. | 17th Mar 1936 | Box 157 \ 6 scan0022 | |
| Cover letter from India Tyre & Rubber Company, Ltd. enclosing a print. | 17th Mar 1936 | Box 157 \ 6 scan0023 | |
| Comparison of cross-sections and dimensions for various India Super tyres mounted on well base rims. | 18th Mar 1936 | Box 157 \ 6 scan0024 | |
| To Roy requesting an official order for wheels and tyres. | 18th Mar 1936 | Box 157 \ 6 scan0025 | |
| Letter to a tyre company requesting experiments on different wheel rim widths. | 18th Mar 1936 | Box 157 \ 6 scan0026 | |
| Letter to The Earl of Rothes discussing an undesirable increase in tyre weight and the issue of tyre noise. | 18th Mar 1936 | Box 157 \ 6 scan0027 | |
| Letter from India Tyre & Rubber Company regarding tests on wider rims and procuring a 4.5 x 17 inch rim. | 19th Mar 1936 | Box 157 \ 6 scan0028 | |
| Letter of thanks from India Tyre & Rubber Company Ltd. to W.A. Robotham. | 19th Mar 1936 | Box 157 \ 6 scan0029 | |
| Inquiring about potential objections to using India brand tyres on the Phantom III. | 21th Mar 1936 | Box 157 \ 6 scan0030 | |
| Comparing India and Dunlop tyres, noting that fitting Dunlop tyres is a matter of policy. | 23th Mar 1936 | Box 157 \ 6 scan0031 | |
| Letter from a tyre supplier regarding Bentley test wheels and tyres. | 3rd Apr 1936 | Box 157 \ 6 scan0032 | |
| Letter from the India Tyre & Rubber Company regarding tyre and rim specifications for the Le Mans Race. | 3rd Apr 1936 | Box 157 \ 6 scan0033 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding tyre tests and rims. | 6th Apr 1936 | Box 157 \ 6 scan0034 | |
| Letter from India Tyre & Rubber Co. Ltd. to W.A. Robotham regarding tyre tests on Bentleys. | 6th Apr 1936 | Box 157 \ 6 scan0035 | |
| Customer satisfaction letter to The India Tyre Co. Ltd. regarding their tyres on a 3.5-litre Bentley. | 17th Mar 1936 | Box 157 \ 6 scan0036 | |
| Letter from India Tyre & Rubber Co. Ltd. to Mrs. E.R. Hall regarding tyre dimensions and specifications. | 7th Apr 1936 | Box 157 \ 6 scan0037 | |
| Letter from India Tyre & Rubber Co. arranging a meeting with Mr. Royce and a lunch invitation for W.A. Robotham. | 7th Apr 1936 | Box 157 \ 6 scan0038 | |
| Letter from India Tyre & Rubber Co. Ltd. regarding the supply of tyres and wheels for testing. | 7th Apr 1936 | Box 157 \ 6 scan0039 | |
| From ROY to Hs/Rm regarding a planned visit by Lord Rothes to the Works. | 8th Apr 1936 | Box 157 \ 6 scan0040 | |
| Letter to The Earl of Rothes at The India Tyre & Rubber Co. Ltd. confirming a lunch appointment. | 9th Apr 1936 | Box 157 \ 6 scan0041 | |
| Specifications for a 6.00 x 17 India Super 17' Bentley Wheel, including weight and dimensions. | 17th Apr 1936 | Box 157 \ 6 scan0042 | |
| Typed message from Robotham to Rothes regarding unavailability on a Monday. | 18th Apr 1936 | Box 157 \ 6 scan0043 | |
| Letter from the India Tyre & Rubber Company regarding a missed meeting and a discussion on tyres. | 20th Apr 1936 | Box 157 \ 6 scan0044 | |
| Letter to The Earl of Rothes regarding an absence and an update on the progress of new tyres. | 25th Apr 1936 | Box 157 \ 6 scan0045 | |
| Letter from the India Tyre & Rubber Company Ltd. to the Experimental Department. | 27th Apr 1936 | Box 157 \ 6 scan0046 | |
| Excessive noise from India brand tyres fitted to Bentley cars and the need to test quieter alternatives. | 8th May 1936 | Box 157 \ 6 scan0047 | |
| Letter from India Tyre & Rubber Co. regarding tyre tests and performance on a new 4 1/4 Litre Bentley. | 8th May 1936 | Box 157 \ 6 scan0048 | |
| Letter from the India Tyre & Rubber Company Ltd. to arrange a meeting in Derby. | 11th May 1936 | Box 157 \ 6 scan0049 | |
| Holding letter to The India Tyre & Rubber Co. Ltd. regarding the absence of Mr. Robotham. | 12th May 1936 | Box 157 \ 6 scan0050 | |
| Experiments to find an improved and quieter tyre for Bentley motor cars. | 20th May 1936 | Box 157 \ 6 scan0051 | |
| Letter from India Tyre & Rubber Company Ltd. regarding a previous correspondence. | 21th May 1936 | Box 157 \ 6 scan0052 | |
| Letter to The India Tyre & Rubber Co. Ltd. about testing a new tyre on a wider rim to address noise issues. | 25th May 1936 | Box 157 \ 6 scan0053 | |
| Letter from India Tyre & Rubber Company Ltd. concerning trying out tyres on a wider rim. | 26th May 1936 | Box 157 \ 6 scan0054 | |
| Letter from India Tyre & Rubber Company discussing tyre and rim improvements and recommendations. | 27th May 1936 | Box 157 \ 6 scan0055 | |
| Letter from India Tyre & Rubber Company, Ltd. to W.A. Robotham regarding sending tyres for testing. | 27th May 1936 | Box 157 \ 6 scan0056 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding the dispatch of wheels for tyre modification. | 28th May 1936 | Box 157 \ 6 scan0057 | |
| Confirming wheels are being sent to The Bramber Engineering Co. for wider rims to be fitted. | 28th May 1936 | Box 157 \ 6 scan0058 | |
| Letter to The Earl of Rothes regarding the rebuilding of wheels to accommodate a wider rim. | 28th May 1936 | Box 157 \ 6 scan0059 | |
| Letter from India Tyre & Rubber Co. Ltd. acknowledging a letter addressed to Lord Rothes. | 29th May 1936 | Box 157 \ 6 scan0060 | |
| Letter from the India Tyre & Rubber Company Ltd. concerning the postponement of a discussion until after a test is completed. | 3rd Jun 1936 | Box 157 \ 6 scan0061 | |
| Letter from India Tyre & Rubber Co. Ltd. regarding wheel offset and tyre dimensions. | 4th Jun 1936 | Box 157 \ 6 scan0062 | |
| Letter from Bramber Engineering advising that 5 wire wheels will be ready for collection after being fitted with wider rims. | 5th Jun 1936 | Box 157 \ 6 scan0063 | |
| Letter to Bramber Engineering Co. Ltd. requesting the dispatch of wheels by rail and an estimate. | 6th Jun 1936 | Box 157 \ 6 scan0064 | |
| Road wheels for a Bentley chassis to prevent tyre rolling. | 8th Jun 1936 | Box 157 \ 6 scan0065 | |
| Letter from The Bramber Engineering Company Ltd. quoting a price for rebuilding a set of wheels. | 8th Jun 1936 | Box 157 \ 6 scan0066 | |
| Pencil sketch of a wheel rim design, showing a cross-section and dimensions. | 3rd Apr 1936 | Box 157 \ 6 scan0067 | |
| Letter from Rothes of India Tyre & Rubber Co. to W.A. Robotham regarding an invitation around the Le Mans race. | 8th Jun 1936 | Box 157 \ 6 scan0068 | |
| Letter regarding the postponement of the Le Mans race due to French strikes and a potential meeting at Wimbledon. | 9th Jun 1936 | Box 157 \ 6 scan0069 | |
| Letter to The India Tyre & Rubber Co. Ltd. concerning wheel position, tyre contact, and road holding. | 9th Jun 1936 | Box 157 \ 6 scan0070 | |
| To Roy requesting an order be placed with Bramber Eng. Co. Ltd. for re-building five 17 inch wheels. | 10th Jun 1936 | Box 157 \ 6 scan0071 | |
| Letter from India Tyre & Rubber Co. regarding wheel specifications, tyre testing, and the cancellation of the Le Mans race. | 10th Jun 1936 | Box 157 \ 6 scan0072 | |
| Letter to The India Tyre & Rubber Co.Ltd. discussing the performance of wide rim wheels and tyres. | 26th Jun 1936 | Box 157 \ 6 scan0073 | |
| Comparison table of different Bentley tyre specifications, detailing weights and dimensions. | 27th Jun 1936 | Box 157 \ 6 scan0074 | |
| Letter to P. Worth of The India Tyre & Rubber Co.Ltd., enclosing a copy of a letter sent to Lord Rothes. | 27th Jun 1936 | Box 157 \ 6 scan0075 | |
| Letter from the India Tyre & Rubber Company Ltd. arranging a meeting to discuss a tyre issue. | 29th Jun 1936 | Box 157 \ 6 scan0076 | |
| Letter to The Earl of Rothes at The India Tyre & Rubber Co. Ltd., confirming a meeting with Mr. Worth. | 30th Jun 1936 | Box 157 \ 6 scan0077 | |
| Payment for an invoice from India Tyre & Rubber Co. Ltd. for experimental tyre covers. | 6th Jul 1936 | Box 157 \ 6 scan0078 | |
| Official order for tyres from the India Tyre & Rubber Co. Ltd. | 7th Jul 1936 | Box 157 \ 6 scan0079 | |
| Letter from India Tyre & Rubber Company regarding recommendations and supply of tyres, tubes, and wheels for a Bentley Ulster T.T. | 8th Jul 1936 | Box 157 \ 6 scan0080 | |
| Letter from India Tyre & Rubber Company Limited concerning the supply, pricing, and testing of various tyres. | 8th Jul 1936 | Box 157 \ 6 scan0081 | |
| Letter from the India Tyre & Rubber Company requesting a servo repair for a 20HP car, chassis G.X.L.23. | 9th Jul 1936 | Box 157 \ 6 scan0082 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding the performance of tyres for E.R. Hall's race car. | 10th Jul 1936 | Box 157 \ 6 scan0083 | |
| Letter to the Earl of Rothes regarding his car's servo and an enquiry for a 4 1/4 litre Bentley Saloon. | 11th Jul 1936 | Box 157 \ 6 scan0084 | |
| Letter from India Tyre & Rubber Co. Ltd. to W.A. Robotham regarding a 'Servo' issue with a car and an invitation. | 13th Jul 1936 | Box 157 \ 6 scan0085 | |
| Customer's prematurely worn-out servo lining and scheduling its investigation. | 15th Jul 1936 | Box 157 \ 6 scan0086 | |
| Letter regarding a car's servo for Lord Rothes, mentioning a summer holiday closure and arranging for potential work. | 17th Jul 1936 | Box 157 \ 6 scan0087 | |
| Depot closure and providing Lord Rothes' car chassis number and address. | 20th Jul 1936 | Box 157 \ 6 scan0088 | |
| Request to issue an order to cover an invoice for tyres and tubes sent to a customer in France. | 20th Jul 1936 | Box 157 \ 6 scan0089 | |
| Request to issue a purchase order for an invoice from The India Tyre & Rubber Co. Ltd for experimental tyres and tubes. | 20th Jul 1936 | Box 157 \ 6 scan0090 | |
| Request to pass an official order to the India Tyre & Rubber Co. for covers and tubes for experimental purposes. | 27th Jul 1936 | Box 157 \ 6 scan0091 | |
| Letter to The Earl of Rothes regarding the servicing of his car's servo. | 28th Jul 1936 | Box 157 \ 6 scan0092 | |
| Letter from the India Tyre & Rubber Company Ltd. regarding car servicing and holiday schedules. | 29th Jul 1936 | Box 157 \ 6 scan0093 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding modifications to wheels for a Bentley chassis test. | 10th Aug 1936 | Box 157 \ 6 scan0094 | |
| Letter to Bramber Engineering Co. Ltd. regarding the modification of wheels for a Bentley chassis. | 10th Aug 1936 | Box 157 \ 6 scan0095 | |
| Letter to The India Tyre Co. Ltd. regarding the availability, balancing, and testing of various tyres. | 12th Aug 1936 | Box 157 \ 6 scan0096 | |
| Letter to Bramber Engineering Co. Ltd. regarding the fitting of balance weights to 17' rim Bentley wheels. | 12th Aug 1936 | Box 157 \ 6 scan0097 | |
| Mileage of specific India tyres fitted to a car. | 24th Aug 1936 | Box 157 \ 6 scan0098 | |
| Letter from India Tyre & Rubber Company Ltd. regarding the performance of test tyres on Bentley cars. | 25th Aug 1936 | Box 157 \ 6 scan0099 | |
| Letter to the Earl of Rothes regarding travel, tyre testing, and an upcoming race. | 26th Aug 1936 | Box 157 \ 6 scan0100 | |
| Letter from the India Tyre & Rubber Company Ltd. regarding success in the 'T.T.', a holiday, and a pending arrangement with the Dunlop Company. | 27th Aug 1936 | Box 157 \ 6 scan0101 | |
| Two unpaid invoices from The India Tyre & Rubber Co. Ltd. for which no orders exist. | 28th Aug 1936 | Box 157 \ 6 scan0102 | |
| Invoice for tyres, tubes, and wheels from India Tyre & Rubber Co. Ltd for experimental use. | 11th Aug 1936 | Box 157 \ 6 scan0103 | |
| Copy of an order from India Tyre & Rubber Co. Ltd. for wire wheels for a 3 1/4 Litre Bentley. | 17th Aug 1936 | Box 157 \ 6 scan0104 | |
| Official orders be placed for tyres, wheels, and rims with the India Tyre & Rubber Co. Ltd. | 31th Aug 1936 | Box 157 \ 6 scan0105 | |
| Letter from India Tyre & Rubber Company concerning a drawing of a 6.00/17 Super tyre. | 31th Aug 1936 | Box 157 \ 6 scan0106 | |
| Full-size section drawing of a 6.00/17 India Super Tyre on a 4.00-17 W.B. Rim. | 30th Aug 1939 | Box 157 \ 6 scan0107 | |
| Letter from India Tyre & Rubber Company regarding the development and supply of new tyres for Bentley. | 12th Sep 1936 | Box 157 \ 6 scan0108 | |
| Letter to W.A. Robotham regarding a visit to Derby to test new tyres. | 12th Sep 1936 | Box 157 \ 6 scan0109 | |
| Letter to The Earl of Rothes arranging a meeting in Derby to discuss improved tread tyres and service records. | 17th Sep 1936 | Box 157 \ 6 scan0110 | |
| Letter from India Tyre & Rubber Company Ltd. to arrange a meeting in Derby. | 18th Sep 1936 | Box 157 \ 6 scan0111 | |
| Letter to The Earl of Rothes at The India Tyre & Rubber Co. Ltd. to arrange a visit with Mr. Royce. | 22th Sep 1936 | Box 157 \ 6 scan0112 | |
| Letter from India Tyre & Rubber Co. arranging a final visit and farewell lunch. | 25th Sep 1936 | Box 157 \ 6 scan0113 | |
| Letter from India Tyre & Rubber Company requesting test results for new silent pattern tyres. | 12th Oct 1936 | Box 157 \ 6 scan0114 | |
| Letter to India Tyre & Rubber Co. Ltd. regarding the testing of new silent tyres. | 16th Oct 1936 | Box 157 \ 6 scan0115 | |
| Testing new India brand tyres on a Bentley, comparing their silence to standard tyres. | 16th Oct 1936 | Box 157 \ 6 scan0116 | |
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