| Description | Date | Identifier | |
| Letter to Messrs. Thos. Cook & Son Ltd. enclosing a cheque for six T.T. Race trip tickets. | 18th Aug 1936 | Box 90a \ 6 Scan066 | |
| Request to fabricate a bracket for a spare petrol pump on a Hall's Bentley, including pipe alterations. | 19th Aug 1936 | Box 90a \ 6 Scan067 | |
| Requesting a set of parts, successful on another project, be fitted to E.R. Hall's 1936 T.T. car. | 19th Aug 1936 | Box 90a \ 6 Scan068 | |
| Letter from The Royal Automobile Club confirming four passes for the Tourist Trophy Race. | 19th Aug 1936 | Box 90a \ 6 Scan069 | |
| 'Letter Bag' memorandum detailing intelligence on Lagonda and Delahaye race cars. | 19th Aug 1936 | Box 90a \ 6 Scan070 | |
| Instructions for work on two Bentley cars for Mr. E.R. Hall, including brake re-lining and investigating pinking and clutch issues. | 19th Aug 1936 | Box 90a \ 6 Scan071 | |
| Requesting the removal of lamps from an Ulster Bentley for Le Mans and the supply of brake parts for a practice car. | 19th Aug 1936 | Box 90a \ 6 Scan072 | |
| Letter from The Royal Automobile Club concerning class records for G.E.T. Eyston. | 20th Aug 1936 | Box 90a \ 6 Scan073 | |
| Confirming the welding of a regulation expansion box to the exhaust system for E.R. Hall's car. | 20th Aug 1936 | Box 90a \ 6 Scan074 | |
| Customer E.R. Hall's complaints regarding car B-216-GA, covering detonation, valve clatter, squeaking brakes, and engine knock, with suggested remedies. | 20th Aug 1936 | Box 90a \ 6 Scan075 | |
| Letter to the Royal Automobile Club regarding a front brake modification on a Bentley for the Tourist Trophy Race. | 20th Aug 1936 | Box 90a \ 6 Scan076 | |
| Bentley's performance against Lagonda and the need for a new model. | 20th Aug 1936 | Box 90a \ 6 Scan077 | |
| Record comparing the empty weights of an old radiator removed and a new radiator fitted to Hall's Car. | 21th Aug 1936 | Box 90a \ 6 Scan078 | |
| Modifications to Mr Hall's 33 gallon petrol tank, referencing blueprint LeC.5249. | 24th Aug 1936 | Box 90a \ 6 Scan079 | |
| Requesting that two churns and a funnel be loaded onto a lorry with a race car. | 25th Aug 1936 | Box 90a \ 6 Scan080 | |
| Letter from the Royal Automobile Club regarding passes for the 1936 International Tourist Trophy Race. | 25th Aug 1936 | Box 90a \ 6 Scan081 | |
| Short message, possibly a telegram, requesting a 'fish tail' be put on a racing car for a passenger train. | 26th Aug 1936 | Box 90a \ 6 Scan082 | |
| Request for the weight of the Tourist Trophy car ready for the race. | 26th Aug 1936 | Box 90a \ 6 Scan083 | |
| List of weights for silencer, radiator, and petrol tank components for Hall's Car, chassis B-35-AE. | 27th Aug 1936 | Box 90a \ 6 Scan084 | |
| List of fuel capacities and weights of various removed car components for Bentley models. | 28th Aug 1936 | Box 90a \ 6 Scan085 | |
| Telegram requesting a hotel room reservation at the Station Hotel in Belfast. | 28th Aug 1936 | Box 90a \ 6 Scan086 | |
| Condition and weight report for a T.T. Bentley, chassis B-35-AE. | 28th Aug 1936 | Box 90a \ 6 Scan087 | |
| Performance improvements and technical readiness of the Tourist Trophy Car. | 28th Aug 1936 | Box 90a \ 6 Scan088 | |
| Letter to E.R. Hall outlining a suggested programme of tests to be carried out during practice runs. | 29th Aug 1936 | Box 90a \ 6 Scan089 | |
| Two-day practice schedule for a race car and a practice car, focusing on fuel and tyre consumption tests. | 29th Aug 1936 | Box 90a \ 6 Scan090 | |
| Instructions for a race practice session, covering car preparation, programme, data collection, and tyre size considerations. | 29th Aug 1936 | Box 90a \ 6 Scan091 | |
| The final page of a letter regarding a meeting with Sidgreaves and a visit to a practice session. | 29th Mar 1936 | Box 90a \ 6 Scan092 | |
| Letter to A.W. Phillips of The Royal Automobile Club regarding the Tourist Trophy Race. | 31th Aug 1936 | Box 90a \ 6 Scan093 | |
| Short typed message regarding accommodation arrangements in Belfast. | 31th Aug 1936 | Box 90a \ 6 Scan094 | |
| Weight and balance sheet for a 'Practice Car', detailing component weights and pre-drive checks. | 1st Sep 1936 | Box 90a \ 6 Scan095 | |
| Newspaper clipping detailing the entrants, schedule, and conditions for the R.A.C. Tourist Trophy motor race. | 1st Sep 1936 | Box 90a \ 6 Scan096 | |
| Letter to Thos. Cook & Son Ltd. returning a ticket for a trip to the Tourist Trophy race. | 1st Sep 1936 | Box 90a \ 6 Scan097 | |
| Telex message to Hall in Belfast requesting practice results by telephone. | 1st Sep 1936 | Box 90a \ 6 Scan098 | |
| Battery replacement for 'Hall's Car', noting the weights of the old and new batteries. | 1st Sep 1936 | Box 90a \ 6 Scan099 | |
| Letter arranging a meeting with H.G. Russell in Belfast. | 2nd Sep 1936 | Box 90a \ 6 Scan100 | |
| Letter from travel agent Thos. Cook & Son regarding the return of a ticket for the Tourist Trophy race. | 2nd Sep 1936 | Box 90a \ 6 Scan101 | |
| Letter from a travel agent regarding a refund for two returned International T.T. Race tickets. | 5th Sep 1936 | Box 90a \ 6 Scan102 | |
| Acknowledgement of a refund cheque from Thos. Cook & Son Ltd. for tickets for a trip in connection with the T.T. race. | 9th Sep 1936 | Box 90a \ 6 Scan103 | |
| Log of practice lap times for the R.A.C. Tourist Trophy Race. | 3rd Sep 1936 | Box 90a \ 6 Scan104 | |
| Timesheet for practice laps of the R.A.C. Tourist Trophy Race. | 3rd Sep 1936 | Box 90a \ 6 Scan105 | |
| Log of practice lap times for the R.A.C. Tourist Trophy Race. | 3rd Sep 1936 | Box 90a \ 6 Scan106 | |
| Comparing the performance of various racing cars and drivers, likely from the T.T. race. | 17th Sep 1936 | Box 90a \ 6 Scan107 | |
| Letter to the Royal Automobile Club requesting the official record of the Tourist Trophy race. | 17th Sep 1936 | Box 90a \ 6 Scan108 | |
| Letter from The Royal Automobile Club regarding the results of the R.A.C. Tourist Trophy Race. | 18th Sep 1936 | Box 90a \ 6 Scan109 | |
| Request for 6.50 x 19 wheels and tyres for track tests on a T.T. car at Brooklands. | 19th Sep 1936 | Box 90a \ 6 Scan110 | |
| Analysis of tyre wear on E.R. Hall's 4½ Litre Bentley during the Ulster T.T. Race. | 21th Sep 1936 | Box 90a \ 6 Scan111 | |
| Tyre wear analysis from races in 1935 and 1936. | 21th Sep 1936 | Box 90a \ 6 Scan112 | |
| Letter discussing the supply of custom tyres for a 2.5 ft. model of a T.T. Bentley for a show at Olympia. | 22th Sep 1936 | Box 90a \ 6 Scan113 | |
| Letter to the Royal Automobile Club requesting data on cars from the year's Tourist Trophy race. | 25th Sep 1936 | Box 90a \ 6 Scan114 | |
| Report and analysis of the 1936 Tourist Trophy Race. | 29th Sep 1936 | Box 90a \ 6 Scan115 | |
| Analysis of T.T. race performance, regulations, and competitor cars such as Delahaye and Riley in relation to the Bentley. | 29th Sep 1936 | Box 90a \ 6 Scan116 | |
| Wheelbase of a Delahaye vehicle, referencing a magazine for further details. | 30th Sep 1936 | Box 90a \ 6 Scan117 | |
| Letter from The Royal Automobile Club providing competitor car dimensions for the Tourist Trophy Race. | 30th Sep 1936 | Box 90a \ 6 Scan118 | |
| Telegram from Robotham to Hall advising a car is ready for Brooklands tests. | 1st Oct 1936 | Box 90a \ 6 Scan119 | |
| Short memo regarding discussions about the Tourist Trophy Race of 1936. | 10th Oct 1936 | Box 90a \ 6 Scan120 | |
| Covering memo for a report on high power development work on test beds related to the Ulster Tourist Trophy Race. | 1st Oct 1936 | Box 90a \ 6 Scan121 | |
| Power development tests for the 4¼ litre Bentley engine, detailing cylinder head modifications for the Tourist Trophy Race. | 1st Oct 1936 | Box 90a \ 6 Scan122 | |
| Engine testing results, including fuel mixtures, auto-ignition issues, and modifications to pistons and cylinder heads. | 1st Oct 1936 | Box 90a \ 6 Scan123 | |
| Engine valve and spring testing, detailing material changes, failures and bounce speeds. | 1st Oct 1936 | Box 90a \ 6 Scan124 | |
| Power development detailing modifications to a cylinder head and subsequent test results. | 1st Oct 1936 | Box 90a \ 6 Scan125 | |
| Comparison of various fuel grades for the Tourist Trophy race, tested for efficiency and detonation. | 1st Oct 1936 | Box 90a \ 6 Scan126 | |
| Fuel detonation characteristics and the performance of various engine gaskets. | 1st Oct 1936 | Box 90a \ 6 Scan127 | |
| T.T. engine development concerning spark plugs, valve specifications, and induction modifications. | 1st Oct 1936 | Box 90a \ 6 Scan128 | |
| Test report on camshafts, detailing the variation of cam duration by tappet clearances and carburettor configurations. | 1st Oct 1936 | Box 90a \ 6 Scan129 | |
| Test report and conclusion on camshaft and rocker arm modifications. | 1st Oct 1936 | Box 90a \ 6 Scan130 | |
| Conclusions on engine development, focusing on camshafts, cylinder heads, and induction systems for Bentley and 25/30 engines. | 1st Oct 1936 | Box 90a \ 6 Scan131 | |
| The T.T. Bentleys practice session at Brooklands, detailing lap times and modifications. | 5th Oct 1936 | Box 90a \ 6 Scan132 | |
| Test report for Race Car No.7, detailing modifications, lap times, and performance summary. | 5th Oct 1936 | Box 90a \ 6 Scan133 | |
| Short typed message regarding the collection of a Bentley. | 7th Oct 1936 | Box 90a \ 6 Scan134 | |
| Telegram about a car being ready and arrangements for its collection from J R's Hall. | 7th Oct 1938 | Box 90a \ 6 Scan135 | |
| Letter to The India Tyre & Rubber Co. Ltd. regarding a wheel and model. | 8th Oct 1936 | Box 90a \ 6 Scan136 | |
| Interchange of engine units, gearboxes, and exhaust systems between chassis B-35-AE and B-106-GA. | 8th Oct 1936 | Box 90a \ 6 Scan137 | |
| Short message arranging permission for track tests and car collection. | 16th Oct 1936 | Box 90a \ 6 Scan138 | |
| Telegram received by telephone regarding a car collection and supply status. | 17th Oct 1936 | Box 90a \ 6 Scan139 | |
| T.T. Bentley performance tests at Brooklands, detailing two car setups and lap speeds. | 20th Oct 1936 | Box 90a \ 6 Scan140 | |
| Summary of test results comparing the performance of a No. 7 Race Car and an 'A' Practice Car. | 20th Oct 1936 | Box 90a \ 6 Scan141 | |
| Instructions for rebuilding a chassis returned from the coachbuilders into a standard production model. | 20th Oct 1936 | Box 90a \ 6 Scan142 | |
| Requesting the fitting of aluminium brake drums to E.R. Hall's car to gain experience with them. | 27th Oct 1936 | Box 90a \ 6 Scan143 | |
| Telegram from Robotham to Hall requesting delivery instructions for a completed chassis. | 29th Oct 1936 | Box 90a \ 6 Scan144 | |
| Regulations for the 1936 Tourist Trophy Car Race by the Royal Automobile Club. | 1st Jan 1936 | Box 90a \ 6 Scan145 | |
| Account for a hired Morris Car for the Tourist Trophy Race. | 6th Nov 1936 | Box 90a \ 6 Scan146 | |
| Request for the return of a tool box and coat left on Chassis B.106.GA. | 12th Nov 1936 | Box 90a \ 6 Scan147 | |
| Estimate for repair work submitted to Mr. E. R. Hall. | 23th Nov 1936 | Box 90a \ 6 Scan148 | |
| Confirming E.R. Hall's car was used for experimental running in connection with the Tourist Trophy race. | 26th Nov 1936 | Box 90a \ 6 Scan149 | |
| Letter to E.R. Hall regarding an outstanding bill for film and requesting his practice car for experimental parts. | 10th Dec 1936 | Box 90a \ 6 Scan150 | |
| The status and required parts for car B.106.GA, including engine components and brake overhaul. | 24th Dec 1936 | Box 90a \ 6 Scan151 | |
| Issues with Bentley bearings on the continent and proposing a special model to address them. | 11th Jan 1937 | Box 90a \ 6 Scan152 | |
| Letter to E.R. Hall regarding travel to America, a share allotment, and feedback on a Bentley and a V.8 Standard. | 12th Feb 1937 | Box 90a \ 6 Scan153 | |
| Instructing the standardization of an ignition governor and tower for the B-106-GA chassis series. | 24th Jun 1937 | Box 90a \ 6 Scan154 | |
| Instructions to rebuild a Bentley B-106-GA to standard production specification for sale. | 24th Jun 1937 | Box 90a \ 6 Scan155 | |
| List of required modifications, inspections, and parts supply for a vehicle. | 24th Jun 1937 | Box 90a \ 6 Scan156 | |
| Request regarding the conversion of E.R. Hall's practice car, chassis B.106.GA, back to a standard car for resale. | 25th Jun 1937 | Box 90a \ 6 Scan157 | |
| Cable from Hall reporting that a 4 1/4 Saloon car has crossed the Polar Circle. | 30th Jun 1937 | Box 90a \ 6 Scan158 | |
| Work list detailing required maintenance and repairs for E.R. Hall's car. | 16th Jul 1937 | Box 90a \ 6 Scan159 | |
| Message inquiring if large wheels and tyres can be borrowed for a test at Brooklands. | 2nd Aug 1937 | Box 90a \ 6 Scan160 | |
| List of maintenance tasks for Mr. E.R. Hall's Vanvooren Saloon. | 3rd Aug 1937 | Box 90a \ 6 Scan161 | |
| Potential sale of a boat engine to customer E.R. Hall. | 25th Oct 1937 | Box 90a \ 6 Scan162 | |
| Letter to E.R. Hall regarding the sale of a non-standard experimental engine for use in a boat for £100. | 25th Oct 1937 | Box 90a \ 6 Scan163 | |
| Advising against supplying a standard motor car engine to E.R. Hall for a motor boat. | 26th Oct 1937 | Box 90a \ 6 Scan164 | |
| The replacement of springs in a 10' clutch assembly from Mr. E.R. Hall's T.T. car. | 2nd Nov 1937 | Box 90a \ 6 Scan165 | |
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