| Description | Date | Identifier | |
| Letter from The Avon India Rubber Co Ltd offering new tyre covers for testing. | 16th Jun 1921 | Box 156 \ 3 scan0002 | |
| Letter to The Avon India Rubber Co. Ltd. regarding tyre testing on experimental cars. | 20th Jun 1921 | Box 156 \ 3 scan0003 | |
| Letter from the Avon India Rubber Co Ltd regarding tyre specifications and testing. | 27th Jun 1921 | Box 156 \ 3 scan0004 | |
| Letter from The Avon India Rubber Co. Ltd. discussing different tyre tread patterns and associated noise. | 27th Jun 1921 | Box 156 \ 3 scan0005 | |
| Letter from Avon India Rubber Co. Ltd. confirming an appointment for the following afternoon. | 4th Oct 1933 | Box 156 \ 3 scan0006 | |
| 'Wor' to 'Hs' requesting a recommendation on Duo-Tread Tyres, with an attached letter from Avon India Rubber Co. | 4th Oct 1933 | Box 156 \ 3 scan0007 | |
| From 'C.' concerning an attached letter from Avon India Rubber Co. Ltd. about Duo-Tread Tyres. | 3rd Oct 1933 | Box 156 \ 3 scan0008 | |
| Letter from The Avon India Rubber Co. Ltd. offering their new Duo-Tread tyres for testing. | 27th Sep 1933 | Box 156 \ 3 scan0009 | |
| Arranging a test for a set of Dua-Tread Tyres. | 6th Oct 1933 | Box 156 \ 3 scan0010 | |
| The purchase of six tyres from The Avon India Rubber Co. | 11th Oct 1933 | Box 156 \ 3 scan0011 | |
| Letter from The Avon India Rubber Co. Ltd. quoting a price for Duo Tread tyres. | 7th Oct 1933 | Box 156 \ 3 scan0012 | |
| Follow-up letter from Avon Tyres regarding a quotation for 6.00/18 Duo Tread Tyres. | 13th Oct 1933 | Box 156 \ 3 scan0013 | |
| The test results and recommendations for Duo-Tread tyres. | 14th Nov 1933 | Box 156 \ 3 scan0014 | |
| Short memo providing initial feedback on the performance of Duo-tread tyres. | 15th Nov 1933 | Box 156 \ 3 scan0015 | |
| Letter from Avon India Rubber Co. Ltd. requesting information on tests for their 'Duo-Tread' tyres. | 24th Nov 1933 | Box 156 \ 3 scan0016 | |
| Letter to the Avon India Rubber Co. Ltd. regarding a set of Duo-Tread tyres, confirming they have been fitted to an experimental car but a report is pending sufficient mileage. | 27th Nov 1933 | Box 156 \ 3 scan0017 | |
| Customer's complaint regarding the noise and performance of Avon Double Tread Tyres. | 31th Jan 1934 | Box 156 \ 3 scan0018 | |
| Letter to the Avon India Rubber Co. Ltd. condemning their 'Duo' tread tyres after a 1,600-mile test due to noise and poor non-skid qualities. | 1st Feb 1934 | Box 156 \ 3 scan0019 | |
| 'Duo' tread Avon Tyres. | 2nd Feb 1934 | Box 156 \ 3 scan0020 | |
| Letter from The Avon India Rubber Co. Ltd. arranging a meeting to discuss Duo Tread Tyres. | 3rd Feb 1934 | Box 156 \ 3 scan0021 | |
| Letter from Avon Tyres regarding the supply of 'Supreme' 6-ply tyres for testing on a Phantom Three model and requesting mileage data on a previous set. | 15th Oct 1935 | Box 156 \ 3 scan0022 | |
| Invoice for tyres and tubes from The Avon India Rubber Co. Ltd. | 18th Oct 1935 | Box 156 \ 3 scan0023 | |
| The unsatisfactory performance regarding noise and mileage of Avon Duo Tread Tyres. | 19th Oct 1935 | Box 156 \ 3 scan0024 | |
| The unsatisfactory noise performance of Avon Duo Tread Tyres on a J-III chassis. | 19th Oct 1935 | Box 156 \ 3 scan0025 | |
| Request to place an official order for tyres and tubes from Avon India Rubber Co. Ltd. | 21th Oct 1935 | Box 156 \ 3 scan0026 | |
| Letter to Avon India Rubber Co. Ltd. regarding the unsatisfactory performance and mileage of their Duo Tread Tyres. | 21th Oct 1935 | Box 156 \ 3 scan0027 | |
| Letter from The Avon India Rubber Co. Ltd. acknowledging receipt of a letter regarding Avon Duo Tread Tyres. | 22th Oct 1935 | Box 156 \ 3 scan0028 | |
| Order for Dunlop and Avon tyre covers and tubes. | 30th Oct 1935 | Box 156 \ 3 scan0029 | |
| Investigation into objectionable tyre noise on the Phantom III car, comparing various tyre brands. | 30th Oct 1935 | Box 156 \ 3 scan0030 | |
| Tyre noise characteristics related to wear, different tyre brands, and wheel types. | 30th Oct 1935 | Box 156 \ 3 scan0031 | |
| Summary of test results on tyre noise as affected by chassis, coachwork, tyre patterns, load, and road surfaces. | 30th Oct 1935 | Box 156 \ 3 scan0032 | |
| List of five factors that do not appear to affect tyre noise. | 30th Oct 1935 | Box 156 \ 3 scan0033 | |
| Investigations into tyre and rear-wheel noise on various cars, including a Ph.III and experimental models. | 10th Jan 1936 | Box 156 \ 3 scan0034 | |
| Letter from Avon India Rubber Co. Ltd. following up on the non-skidding performance of Supreme Tyres supplied for testing. | 10th Jan 1936 | Box 156 \ 3 scan0035 | |
| Letter to The Avon India Rubber Co. Ltd. concerning tyre instability and skidding issues. | 17th Jan 1936 | Box 156 \ 3 scan0036 | |
| Letter from Avon Tyres regarding the testing of their improved Duo Tread tyres. | 22th Jan 1936 | Box 156 \ 3 scan0037 | |
| Letter from The Avon India Rubber Co. Ltd discussing the supply of 7.00 Improved Duo Tread tyres for testing. | 28th Jan 1936 | Box 156 \ 3 scan0038 | |
| Letter from Avon Tyres regarding tests on their Supreme Tyres and their tendency to skid. | 28th Jan 1936 | Box 156 \ 3 scan0039 | |
| Letter to Avon India Rubber Co. Ltd. regarding tyres run on a trials car. | 30th Jan 1936 | Box 156 \ 3 scan0040 | |
| Letter from The Avon India Rubber Co. Ltd. enclosing a copy of a report. | 8th Feb 1936 | Box 156 \ 3 scan0041 | |
| Letter regarding recommended tyre pressures for a Phantom 'Three' car to improve non-skid performance. | 7th Feb 1936 | Box 156 \ 3 scan0042 | |
| The concluding page of a letter from The Avon India Rubber Co. Ltd. | 24th Mar 1938 | Box 156 \ 3 scan0043 | |
| Letter to The Avon India Rubber Co. Ltd. arranging a tyre test on a skid-pan. | 24th Mar 1938 | Box 156 \ 3 scan0044 | |
| Letter from The Avon India Rubber Co. Ltd. regarding cornering and skid-pan tyre testing data. | 19th Apr 1938 | Box 156 \ 3 scan0045 | |
| Letter to Avon India Rubber Co. Ltd. enclosing results of tests on their tyres. | 20th Apr 1938 | Box 156 \ 3 scan0046 | |
| Tyre comparison data for various brands on a Bentley B.23.AE chassis. | 13th Apr 1938 | Box 156 \ 3 scan0047 | |
| Comparison of different tyres on a Bentley chassis B.23.AE, measuring telescope readings and slip angles at various speeds. | 13th Apr 1938 | Box 156 \ 3 scan0048 | |
| Graph plotting tyre slip angles against sideways acceleration for various tyre types on a Bentley chassis. | 14th Apr 1938 | Box 156 \ 3 scan0049 | |
| Letter from Avon India Rubber Co. Ltd. discussing the results of skid pan tests and tyre specifications. | 22th Apr 1938 | Box 156 \ 3 scan0050 | |
| Letter from Avon India Rubber Co. Ltd. requesting details on tyre testing methodologies for slip angles and sideways acceleration. | 27th Apr 1938 | Box 156 \ 3 scan0051 | |
| Letter from The Avon India Rubber Co. Ltd. regarding the receipt of Avon and Fisk tyres for road testing. | 3rd May 1938 | Box 156 \ 3 scan0052 | |
| Letter to The Avon India Rubber Co. Ltd. clarifying tyre testing methods, slip angles, and correcting previously sent rim width data. | 3rd May 1938 | Box 156 \ 3 scan0053 | |
| The second page of a letter addressed to The Avon India Rubber Co. Ltd. | 3rd May 1938 | Box 156 \ 3 scan0054 | |
| Letter from The Avon India Rubber Co. Ltd. acknowledging a previous correspondence. | 6th May 1938 | Box 156 \ 3 scan0055 | |
| Letter to The Avon India Rubber Co. Ltd. requesting a set of 6.50 x 16 tyres for trial. | 14th Jun 1938 | Box 156 \ 3 scan0056 | |
| Letter from Avon India Rubber Co. Ltd. explaining delays in supplying experimental tyres due to a manufacturing error. | 21th Jun 1938 | Box 156 \ 3 scan0057 | |
| Letter to The Avon India Rubber Co. Ltd. arranging a meeting to discuss the self-centring of tyres. | 29th Jun 1938 | Box 156 \ 3 scan0058 | |
| Letter from The Avon India Rubber Co. Ltd. arranging a meeting to discuss the self-centring of tyres. | 1st Jul 1938 | Box 156 \ 3 scan0059 | |
| Letter from The Avon India Rubber Company regarding the delivery and testing of experimental 16' tyres. | 12th Jul 1938 | Box 156 \ 3 scan0060 | |
| Request to place an official order for experimental pattern tyres from the Avon India Rubber Co., Ltd. | 13th Jul 1938 | Box 156 \ 3 scan0061 | |
| Letter from Avon India Rubber Co. Ltd. explaining a delay in replying due to a staff member being on holiday. | 27th Jul 1938 | Box 156 \ 3 scan0062 | |
| Letter from Avon Tyres discussing the outcome of tests on experimental 6.50/16 tyres and arranging a follow-up meeting. | 6th Aug 1938 | Box 156 \ 3 scan0063 | |
| Stores copy document for the receipt of tyre covers from Avon India Rubber. | 4th Aug 1938 | Box 156 \ 3 scan0064 | |
| Letter from the Avon India Rubber Company confirming a meeting to discuss the results of experimental tyre tests. | 11th Aug 1938 | Box 156 \ 3 scan0065 | |
| Letter from Avon India Rubber Co. Ltd. regarding the dispatch of two tyres for testing. | 2nd Sep 1938 | Box 156 \ 3 scan0066 | |
| Letter to Avon India Rubber Co. detailing the results of Skid Pan tests on their tyres. | 20th Sep 1938 | Box 156 \ 3 scan0067 | |
| Letter from Avon Tyres discussing skid pan test results and arranging further tyre testing. | 22th Sep 1938 | Box 156 \ 3 scan0068 | |
| Letter from the Experimental Department to The Avon India Rubber Co. Ltd. regarding the use of a Skid Pan. | 23th Sep 1938 | Box 156 \ 3 scan0069 | |
| Letter from Avon India Rubber Co. Ltd. arranging for the use of a skid pan for testing. | 27th Sep 1938 | Box 156 \ 3 scan0070 | |
| Letter to The Avon India Rubber Co. Ltd. stating that the Skid Pan is now camouflaged and unusable. | 29th Sep 1938 | Box 156 \ 3 scan0071 | |
| Letter from The Avon India Rubber Co. Ltd. regarding a Skid Pan being out of action due to A.R.P. | 30th Sep 1938 | Box 156 \ 3 scan0072 | |
| Letter from Avon Tyres concerning tyre rolling resistance, skid pan testing, and high-speed tyre performance. | 17th Oct 1938 | Box 156 \ 3 scan0073 | |
| Page 2 of a letter from The Avon India Rubber Co Ltd concerning safety precautions for tyre testing. | 28th Oct 1938 | Box 156 \ 3 scan0074 | |
| Letter to The Avon India Rubber Co. Ltd. regarding the availability of a skid pan for their use. | 28th Oct 1938 | Box 156 \ 3 scan0075 | |
| Letter from Avon India Rubber Co. Ltd. regretting they cannot take up an offer to use the Skid Pan due to a slight accident with their test car. | 31th Oct 1938 | Box 156 \ 3 scan0076 | |
| Letter from Avon Tyres concerning the dispatch of experimental tyres for testing road holding and noise. | 7th Dec 1938 | Box 156 \ 3 scan0077 | |
| Letter from The Avon India Rubber Company Ltd. concerning arrangements for testing 16 silent pattern tyres on a road, drum, and an experimental Bentley. | 19th Dec 1938 | Box 156 \ 3 scan0078 | |
| Letter to The Avon India Rubber Co.Ltd. enclosing a comparison curve between their latest tyre and the India Super tyre. | 22th Dec 1938 | Box 156 \ 3 scan0079 | |
| Letter from The Avon India Rubber Co. Ltd. comparing the ply construction of their tyres with India tyres. | 29th Dec 1938 | Box 156 \ 3 scan0080 | |
| Letter to The Avon India Rubber Co. Ltd. confirming the ply construction of India Super tyres versus another tyre. | 2nd Jan 1939 | Box 156 \ 3 scan0081 | |
| Letter from Avon Tyres confirming the dispatch of 16 tyres from an altered mould for testing. | 5th Jan 1939 | Box 156 \ 3 scan0082 | |
| Letter from Avon Tyres regarding a delayed shipment of sixteen tyres due to road conditions. | 6th Jan 1939 | Box 156 \ 3 scan0083 | |
| The Avon India Rubber Co. Ltd's proposed use of the registered name 'Phantom' for their tyres. | 6th Jan 1939 | Box 156 \ 3 scan0084 | |
| Letter from Avon India Rubber Co. Ltd. requesting permission to name a new tyre 'Avon Phantom'. | 3rd Jan 1939 | Box 156 \ 3 scan0085 | |
| Yet-to-be-tested final form of the Avon tyre. | 10th Jan 1939 | Box 156 \ 3 scan0086 | |
| Follow-up note awaiting test results for the final form of the Avon tyre, with initial handwritten feedback. | 10th Jan 1939 | Box 156 \ 3 scan0087 | |
| Promising and quiet preliminary test results for an Avon Tyre. | 13th Jan 1939 | Box 156 \ 3 scan0088 | |
| Test report on Avon Special Tyres 6.50 x 16. | 23th Jan 1939 | Box 156 \ 3 scan0089 | |
| Cover note for an enclosed letter to Avon India Rubber Co. Ltd. regarding their use of the 'Phantom' name. | 23th Jan 1939 | Box 156 \ 3 scan0090 | |
| Letter to The Avon India Rubber Co. Ltd. refusing permission to use the registered name 'Phantom' for a new tyre. | 23th Jan 1939 | Box 156 \ 3 scan0091 | |
| Letter to The India Tyre & Rubber Co. detailing the mileage and position of two special tyres tested on a Bentley test car in France. | 15th Feb 1939 | Box 156 \ 3 scan0092 | |
| Letter from The Avon India Rubber Co. Ltd. regarding the suitability of a Skid Pan for slip angle tests. | 21th Feb 1939 | Box 156 \ 3 scan0093 | |
| Letter to Avon India Rubber Co. Ltd. concerning the cancellation of a skid pan inspection due to bad weather. | 22th Feb 1939 | Box 156 \ 3 scan0094 | |
| Letter from Avon India Rubber Company regarding a Skid Pan being rendered unusable by the weather. | 25th Feb 1939 | Box 156 \ 3 scan0095 | |
| Request to place an order for tyres and tubes with instructions for their delivery. | 9th Mar 1939 | Box 156 \ 3 scan0096 | |
| Letter to The Avon India Rubber Co. Ltd. requesting a further supply of special 6.50 x 16 x 4 ply tyres. | 9th Mar 1939 | Box 156 \ 3 scan0097 | |
| Letter from Avon India Rubber Co. Ltd. confirming the manufacture and dispatch of 4-ply tyres. | 10th Mar 1939 | Box 156 \ 3 scan0098 | |
| Letter from a tyre manufacturer proposing a meeting to discuss test results and power losses. | 10th Mar 1939 | Box 156 \ 3 scan0099 | |
| Letter to Dr. J.G. Mackay of The Avon India Rubber Co. Ltd. to reschedule a visit. | 13th Mar 1939 | Box 156 \ 3 scan0100 | |
| Letter from Avon India Rubber Co. regarding a delay and balance issue with a batch of tyres. | 15th Mar 1939 | Box 156 \ 3 scan0101 | |
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