| Description | Date | Identifier | |
| The design of a detachable air intake silencer for Hall's Car. | 16th Jul 1934 | Box 90a \ 2 Scan130 | |
| Comparative horsepower and aerodynamics of E.R. Hall's car, authorising wind tunnel tests. | 17th Jul 1934 | Box 90a \ 2 Scan131 | |
| Practice of annealing copper pipes on Hall's racing car due to frequent breakages. | 18th Jul 1934 | Box 90a \ 2 Scan132 | |
| Ordering two sizes of racing tyres from Dunlop for E.R. Hall's car. | 18th Jul 1934 | Box 90a \ 2 Scan133 | |
| Arrangements for wind tunnel testing of Mr. E.R. Hall's car with Vickers, Ltd. | 19th Jul 1934 | Box 90a \ 2 Scan134 | |
| Typed message to Mr. Hall at the Beach Hotel, Frinton-On-Sea, concerning a delay in a car's readiness. | 21th Jul 1934 | Box 90a \ 2 Scan135 | |
| List of assembly and modification instructions for Unit B-11 for Ulster. | 21th Jul 1934 | Box 90a \ 2 Scan136 | |
| Letter from the Experimental Department regarding a car's readiness and a request for more Duralumin. | 21th Jul 1934 | Box 90a \ 2 Scan137 | |
| Modifications for 'Hall's Car' regarding nuts, wing nut lift, servo lining, and spare wheel carriers. | 21th Jul 1934 | Box 90a \ 2 Scan138 | |
| Power output graph for an X5BC engine unit, showing performance under various test conditions. | 1st Jan 1934 | Box 90a \ 2 Scan139 | |
| Faded document, page 10, marked with a Print Room stamp. | 12th Jul 1934 | Box 90a \ 2 Scan140 | |
| List of minor points noted on Hall's Car, chassis number B-35-AE. | 24th Jul 1934 | Box 90a \ 2 Scan141 | |
| Telegram regarding the dispatch of Bentley racing plugs by passenger train. | 24th Jul 1934 | Box 90a \ 2 Scan142 | |
| Letter from 'The Motor' magazine inviting staff on a special trip to Ulster. | 24th Jul 1934 | Box 90a \ 2 Scan143 | |
| Advertisement for travel to the R.A.C. T.T. Race in Belfast, organised by 'The Motor' magazine. | 1st Sep 1934 | Box 90a \ 2 Scan144 | |
| Travel and cost information for a trip to the Ulster Race. | 25th Jul 1934 | Box 90a \ 2 Scan145 | |
| Timetable for outward and return train and ferry journeys for late August and early September. | 25th Jul 1934 | Box 90a \ 2 Scan146 | |
| Letter requesting a change of rear wheels and arranging a meeting. | 25th Jul 1934 | Box 90a \ 2 Scan147 | |
| Summarizing engine alterations and performance test results for the Ulster Bentley. | 25th Jul 1934 | Box 90a \ 2 Scan148 | |
| Preliminary tests and inspection findings for a Competition Bentley, chassis B-35-AE. | 25th Jul 1934 | Box 90a \ 2 Scan149 | |
| Test report on engine performance regarding oil capacity, general behaviour, and specifications for spark plugs, fuel, and oil. | 25th Jul 1934 | Box 90a \ 2 Scan150 | |
| Performance graph showing the power output of a 3.5 Litre Bentley engine under various configurations. | 21th Jul 1934 | Box 90a \ 2 Scan151 | |
| Page, possibly a cover, with a purple ink stamp from the Print Room in Derby. | 25th Jul 1934 | Box 90a \ 2 Scan152 | |
| Short typed message regarding a change of meeting plans and location. | 26th Jul 1934 | Box 90a \ 2 Scan153 | |
| Short typed message arranging a meeting at Brooklands after lunch. | 27th Jul 1934 | Box 90a \ 2 Scan154 | |
| Cover letter to E.R. Hall informing him that a copy of another letter has been sent. | 28th Jul 1934 | Box 90a \ 2 Scan155 | |
| Covering letter to E.R. Hall informing him a copy of a letter has been sent to his London address. | 28th Jul 1934 | Box 90a \ 2 Scan156 | |
| Letter to E.R. Hall detailing vehicle modifications to be pointed out to the R.A.C for approval. | 28th Jul 1934 | Box 90a \ 2 Scan157 | |
| Typed letter discussing car maintenance responsibilities and proposed modifications. | 20th Jul 1934 | Box 90a \ 2 Scan158 | |
| Confirming the arrival of E.R. Hall's car for final work to be carried out. | 31th Jul 1934 | Box 90a \ 2 Scan159 | |
| Letter to Thos. Cook & Son Ltd. enclosing a money order for a fare from Manchester. | 28th Aug 1934 | Box 90a \ 2 Scan160 | |
| Sending tyres to Stores for Dunlops, detailing a change in required tyre size for E.R. Hall's car. | 28th Aug 1934 | Box 90a \ 2 Scan161 | |
| Invoice details for Dunlop Road Racing Covers for a Bentley entered in the Ulster T.T. | 10th Aug 1934 | Box 90a \ 2 Scan162 | |
| Requesting the dispatch of five 5.25 x 18 Dunlop covers to the makers as they are not the required size. | 28th Aug 1934 | Box 90a \ 2 Scan163 | |
| Payment for Dunlop racing tyre covers used at the Ulster race. | 4th Sep 1934 | Box 90a \ 2 Scan164 | |
| Telegram of congratulations sent from Skinner Flexcarbur to Hives Roycar. | 3rd Sep 1934 | Box 90a \ 2 Scan165 | |
| Letter to Rowbotham regarding the Ulster race, travel arrangements, and an opinion on the participating Talbot cars. | 30th Aug 1934 | Box 90a \ 2 Scan166 | |
| From Hs/Rm to Lp regarding newspaper cuttings, a drive in the 'Spectre', and progress on the recipient's car. | 4th Sep 1934 | Box 90a \ 2 Scan167 | |
| Letter from Cam Gears Ltd. discussing the driving performance and steering of drivers Hall and Brian Lewis at an event. | 3rd Sep 1934 | Box 90a \ 2 Scan168 | |
| Continuation sheet from Cam Gears Ltd. discussing gear mechanisms in relation to M.G. and Humber cars. | 3rd Sep 1934 | Box 90a \ 2 Scan169 | |
| Letter discussing the merits of a worm and nut steering system compared to a Bishop gear, with reference to Bentley and Lagonda vehicles. | 5th Sep 1934 | Box 90a \ 2 Scan170 | |
| Letter from E.H. Hall to Robotham arranging for a scrutineer to measure a T.T. engine. | 4th Sep 1934 | Box 90a \ 2 Scan171 | |
| Letter from The Royal Automobile Club regarding the scrutineering of Bentley Car No. 7 for the 1934 Tourist Trophy Race. | 4th Sep 1934 | Box 90a \ 2 Scan172 | |
| Letter to Capt. Burt discussing the Le Mans race and the possibility of trying a Railton Terraplane. | 4th Sep 1934 | Box 90a \ 2 Scan173 | |
| Letter discussing the loan, availability, and condition of several high-performance cars, including a Railton Terraplane, Maserati, and Alfa Romeo. | 6th Sep 1934 | Box 90a \ 2 Scan174 | |
| Letter to Harry Ferguson Esq. of Belfast, thanking him for his assistance during the Tourist Trophy race. | 6th Sep 1934 | Box 90a \ 2 Scan175 | |
| Blueprint showing suggested modifications to a high-compression head for a Bentley engine. | 3rd Dec 1934 | Box 90a \ 2 Scan176 | |
| Table of diameter measurements for 'Aerolite' A122 Alloy pistons from an Ulster Bentley. | 12th Jul 1934 | Box 90a \ 2 Scan178 | |
| The reverse side of a document showing a 'Print Room' stamp from Derby. | 28th Jul 1934 | Box 90a \ 2 Scan179 | |
| Blueprint detailing the dimensions and capacities for an engine's exhaust and silencer system. | 28th Jul 1934 | Box 90a \ 2 Scan180 | |
| The Ulster Tourist Trophy Race, detailing car specifications and modifications. | 6th Sep 1934 | Box 90a \ 2 Scan181 | |
| Race performance, pit stop issues, and tyre strategy for a race car. | 6th Sep 1934 | Box 90a \ 2 Scan182 | |
| Report and analysis of a motor race, discussing driver performance, strategy, and vehicle issues. | 6th Sep 1934 | Box 90a \ 2 Scan183 | |
| Policy document discussing future involvement in sporting and racing events. | 6th Sep 1934 | Box 90a \ 2 Scan184 | |
| Strategic decisions on competition and the benefits of standard car racing for development. | 6th Sep 1934 | Box 90a \ 2 Scan185 | |
| Wind tunnel tests for the Ulster T.T. Bentley car. | 22th Aug 1934 | Box 90a \ 2 Scan186 | |
| Report comparing the aerodynamic performance of Saloon and open car bodies and proposing new designs. | 22th Aug 1934 | Box 90a \ 2 Scan187 | |
| The importance of aerodynamic body shapes for vehicle performance, specifically for Bentley race cars. | 22th Aug 1934 | Box 90a \ 2 Scan188 | |
| Appendix with performance calculations for a Standard Saloon and model R-35-AE. | 22th Aug 1934 | Box 90a \ 2 Scan189 | |
| Performance calculations for two vehicle tests, including horsepower, tractive resistance, and windage. | 22th Jun 1934 | Box 90a \ 2 Scan190 | |
| Appendix page with calculations for vehicle lap speed and windage drag based on horsepower and test results. | 22th Aug 1934 | Box 90a \ 2 Scan191 | |
| Pros and cons of Bentley's participation in motor racing for sales promotion. | 9th Oct 1934 | Box 90a \ 2 Scan192 | |
| Advantages and disadvantages of participating in motor racing. | 1st Oct 1934 | Box 90a \ 2 Scan193 | |
| Bentley customer complaints, racing strategy, and resource allocation. | 9th Oct 1934 | Box 90a \ 2 Scan194 | |
| Company's position on sponsoring racing cars and drivers for 1935. | 9th Oct 1934 | Box 90a \ 2 Scan195 | |
| List of lap times for a Bentley car at the Ulster Tourist Trophy (T.T.) race. | 8th Sep 1934 | Box 90a \ 2 Scan196 | |
| Decision on 'Hall's Car' entering future events and a request for engine inspection. | 8th Sep 1934 | Box 90a \ 2 Scan197 | |
| Letter enquiring if Brico piston rings were used in the T.T. race for the purpose of a bonus payment. | 10th Sep 1934 | Box 90a \ 2 Scan198 | |
| Letter to E.R. Hall regarding his Bentley's pistons and plans for the Shelsley event. | 12th Sep 1934 | Box 90a \ 2 Scan199 | |
| Letter to E.R. Hall regarding Bentley piston rings and arrangements for a run at Shelsley. | 12th Sep 1934 | Box 90a \ 2 Scan200 | |
| The fitting of a light flywheel to car B-35-AE for the Shelsley hill climb. | 11th Sep 1934 | Box 90a \ 2 Scan201 | |
| Private letter requesting performance details of E.R. Hall's car after the Ulster T.T. race. | 11th Sep 1934 | Box 90a \ 2 Scan202 | |
| List of wheels, tyres, and tubes detailing racing changes and original fitment. | 12th Sep 1934 | Box 90a \ 2 Scan203 | |
| Letter of complaint to Dunlop regarding tyre performance and advice during the recent Tourist Trophy Race in Ireland. | 12th Sep 1934 | Box 90a \ 2 Scan204 | |
| Page 2 of a letter discussing Dunlop tyres used for track testing and a perceived lack of cooperation. | 12th Sep 1934 | Box 90a \ 2 Scan205 | |
| Invoicing and payment for Dunlop road racing tyre covers. | 11th Sep 1934 | Box 90a \ 2 Scan206 | |
| Letter from Dunlop Rubber Co. Ltd. declining to amend an invoice for special racing tyres. | 10th Sep 1934 | Box 90a \ 2 Scan207 | |
| To Roy regarding a dispute with Dunlop Rubber Co. over a set of covers taken in Belfast. | 12th Sep 1934 | Box 90a \ 2 Scan208 | |
| Letter to Sir Algernon Lee Guinness thanking him for passes to the Ulster Race. | 14th Sep 1934 | Box 90a \ 2 Scan209 | |
| Requesting confirmation of charges for mechanic's time and parts for Chassis No. B-35-AE. | 14th Sep 1934 | Box 90a \ 2 Scan210 | |
| The loan of a mechanic for the Ulster Race and discussing costs with Mr. Hall. | 17th Sep 1934 | Box 90a \ 2 Scan211 | |
| Letter from K.L.G. Sparking Plugs congratulating on the performance of a Bentley in the Ulster T.T. race. | 17th Sep 1934 | Box 90a \ 2 Scan212 | |
| Advertisement for K.L.G. plugs celebrating the winner and fastest time of the Ulster T.T. race. | 11th Sep 1934 | Box 90a \ 2 Scan213 | |
| Transfer of servo cams from one chassis to another and a request for a further pair to be fitted to Hall's car. | 18th Sep 1934 | Box 90a \ 2 Scan214 | |
| Letter to K.L.G. Sparking Plugs Ltd. expressing satisfaction with their plugs in a Bentley and approving their advertisement. | 18th Sep 1934 | Box 90a \ 2 Scan215 | |
| The return of E.R. Hall's spare S.U. carburettors and a request for a credit note. | 18th Sep 1934 | Box 90a \ 2 Scan216 | |
| Suggesting communication with Mr. Shankland to arrange about racing tyres. | 20th Sep 1934 | Box 90a \ 2 Scan217 | |
| Letter from Dunlop Rubber Co. Ltd. regarding a disappointing tyre experience and invoicing. | 19th Sep 1924 | Box 90a \ 2 Scan218 | |
| Post Office telegram confirming an arrival time. | 20th Sep 1934 | Box 90a \ 2 Scan219 | |
| Requesting the rebuild of the B-11 engine unit following completion of tests for Shelsley. | 20th Sep 1934 | Box 90a \ 2 Scan220 | |
| Testing Hall's rev counter for accuracy when mounted in an aluminium panel before running at Shelsley Hall. | 21th Sep 1934 | Box 90a \ 2 Scan221 | |
| Thanking a colleague for a report on the Ulster T.T. race and the Bentley's performance. | 22th Sep 1934 | Box 90a \ 2 Scan222 | |
| Recommendations for costs on chassis B-35-AE for E.R. Hall at Belfast. | 24th Sep 1934 | Box 90a \ 2 Scan223 | |
| The power curve and testing of a Bentley engine for the Shelsley Walsh hill climb. | 27th Sep 1934 | Box 90a \ 2 Scan224 | |
| Calibration chart comparing Tachometer and Hasler rev counter readings for Hall's Car. | 1st Oct 1934 | Box 90a \ 2 Scan225 | |
| Letter accompanying a disc and drawing used for testing brake linings, with a request for four more to be made. | 1st Oct 1934 | Box 90a \ 2 Scan226 | |
| Performance of E.R. Hall's Bentley at the Shelsley Walsh Hill Climb and outlining recommendations for the next racing season. | 1st Oct 1934 | Box 90a \ 2 Scan227 | |
| Staffing for car testing, including extra mechanics for summer months, and the need for a conference to finalise the programme. | 2nd Oct 1934 | Box 90a \ 2 Scan228 | |
| Agreement memorandum regarding charges for Mr. E.R. Hall's car (B.75-AE) and invoicing instructions following the Ulster T.T. event. | 3rd Oct 1934 | Box 90a \ 2 Scan229 | |
| From Sg. to Hs. regarding a conversation with Mr. E.R. Hall about car charges and future racing proposals. | 3rd Oct 1934 | Box 90a \ 2 Scan230 | |
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