| Description | Date | Identifier | |
| Breakdown of the weight of a standard Dunlop wheel and tyre assembly. | 21th Aug 1923 | Box 45 \ 1 Scan307 | |
| Letter from Dunlop regarding re-treaded tyre covers for testing purposes. | 31th Oct 1923 | Box 45 \ 1 Scan308 | |
| Requesting tyres from Messrs. Dunlop to be sent to the Experimental Department. | 11th Nov 1923 | Box 45 \ 1 Scan309 | |
| Letter from Dunlop Rubber Co. Ltd. regarding the re-treading of tyre covers for testing purposes. | 31th Oct 1923 | Box 45 \ 1 Scan310 | |
| Letter to Dunlop Rubber Co. returning a chafed inner tube and providing feedback on low-pressure tyre performance and wear. | 10th Dec 1923 | Box 45 \ 1 Scan311 | |
| Continuation page of a letter regarding the return of borrowed 40/50 wheels and tyres. | 24th Mar 1924 | Box 45 \ 1 Scan312 | |
| Stocking of straight-sided tyres and tubes by agents following supply issues. | 24th Mar 1924 | Box 45 \ 1 Scan313 | |
| Weekly report detailing the performance, mileage, and issues for 'Dunlop' S.S. Cord tyres on vehicle 35 PK. | 13th Jun 1924 | Box 45 \ 1 Scan314 | |
| The positions and performance of Dunlop tyres on vehicle 35 PK. | 18th Jun 1924 | Box 45 \ 1 Scan315 | |
| Letter to Messrs. Rapson requesting more tyres for comparative testing against Dunlop tyres on 40/50 HP cars. | 18th Jun 1924 | Box 45 \ 1 Scan316 | |
| Weekly report detailing the mileage and performance of Dunlop S.S. Cord Tyres on a 35 PK vehicle. | 30th Jun 1924 | Box 45 \ 1 Scan317 | |
| Weekly report on Dunlop S.S. Cord tyre testing, detailing daily and total mileage, and wear issues. | 21th Jun 1924 | Box 45 \ 1 Scan318 | |
| The position and particulars of Dunlop tyres on chassis 98 NK. | 21th Jun 1924 | Box 45 \ 1 Scan319 | |
| The positions, numbers, and performance of 'Dunlop' tyres on vehicle 35 PK. | 21th Jun 1924 | Box 45 \ 1 Scan320 | |
| Letter from Dunlop concerning the failure of certain tyres which had burst after short mileage in France. | 26th Jun 1924 | Box 45 \ 1 Scan321 | |
| Letter to the Dunlop Rubber Co. detailing the results and return of three tyres after testing in France. | 30th Jul 1923 | Box 45 \ 1 Scan322 | |
| Log of Dunlop tyre positions and performance on vehicle 98 NK. | 30th Jun 1924 | Box 45 \ 1 Scan323 | |
| Positions and performance of Dunlop tyres on vehicle 35 PK. | 30th Jun 1924 | Box 45 \ 1 Scan324 | |
| Position and numbers of 'Dunlop' tyres on a 35 PK vehicle. | 5th Jul 1924 | Box 45 \ 1 Scan325 | |
| Weekly report on the mileage and condition of Dunlop S.S. Cord tyres on a 35 PK vehicle. | 5th Jul 1924 | Box 45 \ 1 Scan326 | |
| The performance and condition of 'Dunlop' tyres fitted to vehicle 98 NK. | 5th Jul 1924 | Box 45 \ 1 Scan327 | |
| Weekly tyre report for Dunlop S.S. cord tyres on vehicle 98 NK. | 5th Jul 1924 | Box 45 \ 1 Scan328 | |
| Comparing the performance of Rapson and Dunlop tyres during tests in connection with 4-wheel brakes. | 23th Sep 1924 | Box 45 \ 1 Scan329 | |
| Bar chart comparing the mileage performance of various tyre brands and types. | 7th Oct 1984 | Box 45 \ 1 Scan330 | |
| Severely faded document with illegible content, marked with a red ink stamp. | 7th Oct 1984 | Box 45 \ 1 Scan331 | |
| Requesting a requisition form for 18 loose flanges for straight sided rims recently delivered from Messrs. Dunlop. | 6th Oct 1924 | Box 45 \ 1 Scan332 | |
| To obtain 18 loose flanges from Messrs. Dunlop. | 7th Oct 1924 | Box 45 \ 1 Scan333 | |
| Cancellation of a visit to the Dunlop tyre factory. | 13th Oct 1924 | Box 45 \ 1 Scan334 | |
| Letter to Dunlop Rubber Co. Ltd. requesting information on the increase of effective tyre diameter with speed. | 19th Jun 1925 | Box 45 \ 1 Scan335 | |
| Letter from Dunlop Rubber Co Ltd acknowledging a query regarding the increase in effective tyre diameter with speed. | 20th Jun 1925 | Box 45 \ 1 Scan336 | |
| The receipt and testing of 6 Ply Tyres from The Dunlop Rubber Co. | 22th Jun 1925 | Box 45 \ 1 Scan337 | |
| Letter from Dunlop discussing the results of experiments on effective tyre radius at various speeds. | 25th Jun 1925 | Box 45 \ 1 Scan338 | |
| Continuation sheet from Dunlop Rubber Co. Ltd. detailing tyre performance data. | 1st Jun 1925 | Box 45 \ 1 Scan339 | |
| Graph showing the increase in effective radius of a 33x5 tyre relative to speed, under specific load and inflation conditions. | 1st Jun 1925 | Box 45 \ 1 Scan340 | |
| Letter to The Dunlop Rubber Co. thanking them for providing required information. | 30th Jun 1925 | Box 45 \ 1 Scan341 | |
| Essential nature of a locking device for straight sided rims. | 31th Aug 1925 | Box 45 \ 1 Scan342 | |
| Short report on the performance of Dunlop tyres regarding noise and non-skid qualities. | 16th Oct 1925 | Box 45 \ 1 Scan343 | |
| Letter to Dunlop Rubber Co. comparing the wear of French and British tyres. | 19th Oct 1925 | Box 45 \ 1 Scan344 | |
| Letter from Dunlop suggesting a steering modification to prevent 'shimmy'. | 21th Oct 1925 | Box 45 \ 1 Scan345 | |
| Letter from Dunlop Rubber Co. Ltd. discussing steering mechanics and wheel movement to prevent tread wear. | 30th Oct 1925 | Box 45 \ 1 Scan346 | |
| Letter to the Dunlop Rubber Co. requesting figures on the rolling resistance of various tyre types. | 30th Oct 1925 | Box 45 \ 1 Scan347 | |
| Letter from Dunlop Rubber Co Ltd discussing the adoption of the 21' rim as the standard diameter for low pressure tyres and production statistics. | 5th Nov 1925 | Box 45 \ 1 Scan348 | |
| Rims and tyres, detailing correspondence with Dunlop and Michelin. | 6th Nov 1925 | Box 45 \ 1 Scan349 | |
| Letter from Dunlop Rubber Co. regarding the market prevalence and production of 21-inch rims and tyres. | 5th Nov 1925 | Box 45 \ 1 Scan350 | |
| Letter from Dunlop Rubber Co. Ltd. concerning tests on the rolling resistance of tyres. | 10th Nov 1925 | Box 45 \ 1 Scan351 | |
| Graph from Dunlop Rubber Co. Ltd. plotting rolling resistance against time as a tyre heats up from a cold start. | 19th Nov 1925 | Box 45 \ 1 Scan352 | |
| Specification sheet detailing the weights of Dunlop standard and wheel base wheel assemblies. | 19th Nov 1925 | Box 45 \ 1 Scan353 | |
| Query from The Dunlop Company about the performance of sample Triple Stud Covers under observation. | 20th Nov 1925 | Box 45 \ 1 Scan354 | |
| Blueprint comparing the dimensions and specifications for different Dunlop tyres and well base wheels. | 28th Feb 1928 | Box 45 \ 1 Scan355 | |
| The transport of tyres, tubes, and a hub to France, with a request for invoicing. | 15th Mar 1926 | Box 45 \ 1 Scan356 | |
| Confirming the despatch of 12 Dunlop Covers and Tubes for Mr. G.W. Hancock. | 26th Mar 1926 | Box 45 \ 1 Scan357 | |
| Order for three Dunlop Cord outer covers for chassis 9-G-111 ('India'). | 3rd May 1926 | Box 45 \ 1 Scan358 | |
| Request to despatch 6 tyres left at Chateauroux to The Dunlop Rubber Co. for their development department. | 15th Jun 1926 | Box 45 \ 1 Scan359 | |
| Despatch of 6 tyres for chassis 10-G-111 to The Dunlop Rubber Company. | 17th Jun 1926 | Box 45 \ 1 Scan360 | |
| Correspondence regarding the whereabouts of Dunlop Medium Pressure Tyres used in tests in France. | 10th Aug 1926 | Box 45 \ 1 Scan361 | |
| Comparison of road shocks and ride comfort between standard high-pressure tyres and 6.75 inch Dunlop balloon tyres. | 1st Aug 1926 | Box 45 \ 1 Scan362 | |
| Copy of correspondence from Paris regarding Dunlop Tyres sent for chassis 10.G.III. | 25th Aug 1926 | Box 45 \ 1 Scan363 | |
| Results of high-speed wobble tests on three different sizes of tyres in France. | 10th Sep 1926 | Box 45 \ 1 Scan364 | |
| Visit to Dunlop Co. discussing modifications to Triple Stud and 6.75' Balloon tyres. | 9th Sep 1926 | Box 45 \ 1 Scan365 | |
| Comparison of Dunlop triple stud and traction tread tyres, focusing on high-speed wobble and anti-skid performance. | 14th Sep 1926 | Box 45 \ 1 Scan366 | |
| Availability of modified 6.75' Dunlop tyres and placing an order for existing stock. | 14th Sep 1926 | Box 45 \ 1 Scan367 | |
| Letter to Dunlop Rubber Co. Ltd. concerning the testing of tyre treads to avoid high-speed wobbles on the 40/50 HP chassis. | 15th Sep 1926 | Box 45 \ 1 Scan368 | |
| Letter to Dunlop requesting tyre performance figures and information on inner tube availability. | 21th Sep 1926 | Box 45 \ 1 Scan369 | |
| Objections to Dunlop's new triple stud 6.75' tyres, which replaced the traction tread pattern, citing issues with high-speed wobbles. | 21th Sep 1926 | Box 45 \ 1 Scan370 | |
| Tyre supply issues with Dunlop, specifically concerning high-speed wobbles and the transition to well-based wheels. | 21th Sep 1926 | Box 45 \ 1 Scan371 | |
| Manufacture and testing of 6.75' Dunlop tyres with traction tread. | 1st Sep 1926 | Box 45 \ 1 Scan372 | |
| Patent for noise elimination and suggesting its application for reducing tyre noise with Messrs. Dunlop. | 10th Oct 1926 | Box 45 \ 1 Scan373 | |
| Communication confirming a wire and discussing the sourcing of 6.75' tyres with traction tread for testing. | 10th Oct 1926 | Box 45 \ 1 Scan374 | |
| Letter to the Dunlop Rubber Co. Ltd. inquiring about available tyre sizes and experiments with heavy inner tubes to reduce high-speed wobbles. | 23th Oct 1926 | Box 45 \ 1 Scan375 | |
| Standardization of low and medium pressure tyre descriptions based on their section size. | 23th Oct 1926 | Box 45 \ 1 Scan376 | |
| To prevent confusion in the nomenclature of tyres for the 20 HP and 40/50 HP chassis. | 25th Oct 1926 | Box 45 \ 1 Scan377 | |
| Letter from Dunlop Rubber Co. regarding tyre sizes, experiments with heavy inner tubes for wheel wobble, and a road wheel drum testing rig. | 27th Oct 1926 | Box 45 \ 1 Scan378 | |
| Letter from Dunlop Rubber Co. regarding a request for information on tyre sizes for cars and available competitive makes. | 3rd Nov 1926 | Box 45 \ 1 Scan379 | |
| Specification sheet detailing tyre equipment and available makes for various car models. | 5th Nov 1926 | Box 45 \ 1 Scan380 | |
| Tyre options for 21' rims on the 40/50 HP car and fitting instructions for traction tread tyres. | 5th Nov 1926 | Box 45 \ 1 Scan381 | |
| Standardising tyre terminology for non-technical customers, proposing specific names for tyres on Phantom and 20 HP models. | 6th Nov 1926 | Box 45 \ 1 Scan382 | |
| List of moments of inertia for various wheel and tyre combinations to investigate high-speed wobbles. | 26th Nov 1926 | Box 45 \ 1 Scan383 | |
| Performance data table for 33 x 6.75' tyres at 35 lbs/sq.in pressure. | 30th Nov 1926 | Box 45 \ 1 Scan384 | |
| Performance data tables for 33 inch Solid Tyres and 33 X 5 inch S.S. tyres. | 30th Nov 1926 | Box 45 \ 1 Scan385 | |
| Tyre recommendations for a high-speed chassis, advising high pressure tyres over the 6.75' model. | 1st Jan 1927 | Box 45 \ 2 Scan001 | |
| Index page for a report on the fundamentals of car performance focusing on tyres. | 1st Jan 1927 | Box 45 \ 2 Scan002 | |
| The fundamentals of car performance, specifically the effect of out-of-balance and out-of-truth tyres on steering. | 1st Jan 1927 | Box 45 \ 2 Scan003 | |
| Technical bulletin discussing the causes and solutions for high speed wobbles, focusing on tyre pressure and size. | 1st Jan 1927 | Box 45 \ 2 Scan004 | |
| The causes of high-speed wobbles, including tyre tread patterns, irregular wear, and inflation pressure. | 1st Jan 1927 | Box 45 \ 2 Scan005 | |
| Tyre pressures, stability, and vehicle wobbles. | 1st Jan 1927 | Box 45 \ 2 Scan006 | |
| Factors affecting tyre wear, including steering, temperature, and a comparison between British and Continental conditions. | 1st Jan 1927 | Box 45 \ 2 Scan007 | |
| The effect of tyre types and inflation pressure on petrol consumption, with an accompanying graph. | 1st Jan 1927 | Box 45 \ 2 Scan008 | |
| Two graphs comparing the rolling resistance of different tyres against varying inflation pressures, both in machine tests and on the road. | 1st Jan 1927 | Box 45 \ 2 Scan009 | |
| Report page discussing the impact of balloon tyres on petrol consumption, featuring a graph on tyre rolling resistance. | 1st Jan 1927 | Box 45 \ 2 Scan010 | |
| The characteristics of balloon tyres, their effect on suspension, and riding comfort. | 1st Jan 1927 | Box 45 \ 2 Scan011 | |
| Comparison of effective circumference between high pressure and balloon tyres for 20 HP and 40/50 HP models. | 1st Jan 1927 | Box 45 \ 2 Scan012 | |
| Graph comparing the increase in effective radius with speed for two different tyre types, alongside a discussion on tyre noise. | 1st Jan 1927 | Box 45 \ 2 Scan013 | |
| Report page discussing tyre characteristics, including the rejection of triple stud treads and the variation in non-skid properties of balloon tyres with wear. | 6th Jan 1927 | Box 45 \ 2 Scan014 | |
| Comparison of recommended and not recommended Dunlop tyres and well-base wheels. | 6th Jan 1927 | Box 45 \ 2 Scan015 | |
| Tyre noise issues, conversations with Dunlop, and potential solutions like subframe mounting. | 2nd Feb 1927 | Box 45 \ 2 Scan016 | |
| Proposing a plan to investigate tyre noises on Mr. Spyers' car by collaborating with Dunlop. | 17th Feb 1927 | Box 45 \ 2 Scan017 | |
| Letter to the Dunlop Rubber Co. regarding a car with peculiar tyre noises for them to test. | 1st Mar 1927 | Box 45 \ 2 Scan018 | |
| Letter from Dunlop Rubber Co. Ltd. to the Experimental Department arranging a car demonstration. | 2nd Mar 1927 | Box 45 \ 2 Scan019 | |
| Letter to Dunlop Rubber Co. regarding the unavailability of a car for a scheduled demonstration. | 3rd Mar 1927 | Box 45 \ 2 Scan020 | |
| Letter from Dunlop Rubber Co. Ltd. providing a reminder about a car for demonstration that was previously unavailable. | 14th Mar 1927 | Box 45 \ 2 Scan021 | |
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