| Description | Date | Identifier | |
| Page 2 of a letter asking for clarification on a discrepancy. | 23th Jan 1936 | Box 156 \ 1 scan0156 | |
| Letter to The British Thermostat Co. Ltd. proposing a trial of a radiator steam valve and requesting the supply of a bellows assembly. | 3rd Feb 1936 | Box 156 \ 1 scan0157 | |
| Letter from The British Thermostat Co. confirming an order for a radiator bellows steam valve and requesting duplicate prints. | 5th Feb 1936 | Box 156 \ 1 scan0158 | |
| Letter to The British Thermostat Co. Ltd. concerning the dispatch of duplicate prints. | 6th Feb 1936 | Box 156 \ 1 scan0159 | |
| Letter from The British Thermostat Co. Ltd. acknowledging receipt of a letter and four duplicate drawings, and confirming the urgency of the order. | 7th Feb 1936 | Box 156 \ 1 scan0160 | |
| Letter to The British Thermostat Co. Ltd. requesting a Teddington Thermostat. | 12th Nov 1936 | Box 156 \ 1 scan0161 | |
| Letter from The British Thermostat Co. Ltd. confirming the immediate dispatch of one thermostat. | 13th Nov 1936 | Box 156 \ 1 scan0162 | |
| Internal request to send an official order for a 'Teddington' Thermostat for Vauxhall or Bedford models. | 12th Nov 1936 | Box 156 \ 1 scan0163 | |
| Letter from Thomson & Taylor requesting a reliable manufacturer for Aneroid bellows type thermostats for cooling systems. | 31th Dec 1936 | Box 156 \ 1 scan0164 | |
| Letter to R.A. Railton regarding the choice of thermostats from different manufacturers for car and aero engines. | 1st Jan 1937 | Box 156 \ 1 scan0165 | |
| Requesting modification of a thermostat casing based on a provided print. | 10th Mar 1937 | Box 156 \ 1 scan0166 | |
| Letter to The British Thermostat Co. Ltd. regarding a request for a complete water bypass thermostat unit for Bentley cars. | 11th Mar 1937 | Box 156 \ 1 scan0167 | |
| Letter from The British Thermostat Co. confirming a telephone conversation and an upcoming meeting with Mr. Steadman. | 12th Mar 1937 | Box 156 \ 1 scan0168 | |
| Letter from the British Thermostat Co. Ltd. regarding the supply of four thermostats for testing. | 17th Mar 1937 | Box 156 \ 1 scan0169 | |
| Requesting a distance piece be made for thermostat casing tests, based on sketch SK.5053. | 22th Mar 1937 | Box 156 \ 1 scan0170 | |
| Letter to The British Thermostat Co. Ltd. regarding test results of an unbalanced thermostat and requesting information on alternatives. | 19th Apr 1937 | Box 156 \ 1 scan0171 | |
| List of queries concerning the design, failure modes, and supply of thermostat components. | 21th Apr 1937 | Box 156 \ 1 scan0172 | |
| Letter from The British Thermostat Co. regarding issues with thermostats and proposed modifications. | 21th Apr 1937 | Box 156 \ 1 scan0173 | |
| Letter from The British Thermostat Co. Ltd. discussing thermostat failure modes, air leakage, and supply quantities. | 26th Apr 1937 | Box 156 \ 1 scan0174 | |
| Letter to The British Thermostat Co. Ltd. regarding the testing of supplied thermostats and a request for a quotation for a future order. | 26th Apr 1937 | Box 156 \ 1 scan0175 | |
| Internal request to place an official order for two thermostat units with specific temperature settings. | 28th Apr 1937 | Box 156 \ 1 scan0176 | |
| Request for two thermostat units with different temperature settings to drawing B.G.A.3357.A. | 28th Apr 1937 | Box 156 \ 1 scan0177 | |
| Letter from The British Thermostat Co. Ltd. regarding a quotation for 200 thermostats and the return of tested units. | 28th Apr 1937 | Box 156 \ 1 scan0178 | |
| Letter from The British Thermostat Co., Ltd. confirming the dispatch of two thermostats with different opening temperatures. | 29th Apr 1937 | Box 156 \ 1 scan0179 | |
| Quotation from The British Thermostat Co., Ltd. for 200 units of Thermostat EB.667 with a proposed modification. | 30th Apr 1937 | Box 156 \ 1 scan0180 | |
| Letter from The British Thermostat Co. Ltd. concerning a price quotation. | 3rd May 1937 | Box 156 \ 1 scan0181 | |
| Letter to The British Thermostat Co. Ltd. regarding a quotation and proposed modification for a thermostat. | 3rd May 1937 | Box 156 \ 1 scan0182 | |
| Requesting parts from car B.56.BN be fitted to car B.23.AE, along with a standard Bentley fan. | 3rd May 1937 | Box 156 \ 1 scan0183 | |
| Letter from The British Thermostat Co., Ltd. providing a quotation for Bellows Elements. | 5th May 1937 | Box 156 \ 1 scan0184 | |
| Letter from The British Thermostat Co. Ltd. confirming a despatch. | 10th May 1937 | Box 156 \ 1 scan0185 | |
| Letter to a supplier regarding issues with thermostat samples. | 10th May 1937 | Box 156 \ 1 scan0186 | |
| Thermostat performance, noting undesirable variations and a potential future order for modified units. | 11th May 1937 | Box 156 \ 1 scan0187 | |
| Letter from The British Thermostat Co., Ltd. responding to comments on sample thermostats, model BGA.3357A. | 11th May 1937 | Box 156 \ 1 scan0188 | |
| Letter from The British Thermostat Co. Ltd. regarding a faulty part, sample quality, and a proposed visit. | 21th May 1937 | Box 156 \ 1 scan0189 | |
| New drawings for the Bentley II Chassis water temperature regulator. | 21th May 1937 | Box 156 \ 1 scan0190 | |
| Detailing, testing, and modification of a Bentley water temperature regulator for a fixed shutter radiator. | 11th May 1937 | Box 156 \ 1 scan0191 | |
| Testing and return of two thermostats from the British Thermostat Co. | 14th May 1937 | Box 156 \ 1 scan0192 | |
| Covering order for four thermostats from the British Thermostat Co. | 14th May 1937 | Box 156 \ 1 scan0193 | |
| Letter to The British Thermostat Co. Ltd. returning original thermostats and requesting modified replacements for testing. | 14th May 1937 | Box 156 \ 1 scan0194 | |
| The return of a thermostat to the British Thermostat Co.Ltd. | 19th May 1937 | Box 156 \ 1 scan0195 | |
| Letter to The British Thermostat Co. Ltd regarding the return of a thermostat for correction. | 19th May 1937 | Box 156 \ 1 scan0196 | |
| Letter from The British Thermostat Co. Ltd. regarding the return of two thermostats and the manufacture of a further four. | 19th May 1937 | Box 156 \ 1 scan0197 | |
| Letter chasing an outstanding order for four thermostats from The British Thermostat Co. Ltd. | 27th May 1937 | Box 156 \ 1 scan0198 | |
| Letter from The British Thermostat Co. Ltd. confirming they are proceeding with an order for four thermostats. | 31th May 1937 | Box 156 \ 1 scan0199 | |
| Request to fit a thermostat scheme to a car for testing before fitting it to another car. | 21th Jun 1937 | Box 156 \ 1 scan0200 | |
| The modification of three Bentley thermostat casings. | 25th Jun 1937 | Box 156 \ 1 scan0201 | |
| Requesting a set of parts for a Bentley Thermostat rig test. | 26th Jun 1937 | Box 156 \ 1 scan0202 | |
| Modification of a Bentley thermostat casing. | 1st Jul 1937 | Box 156 \ 1 scan0203 | |
| Letter to The British Thermostat Co. Ltd. regarding disappointing test results of a thermostat scheme on a Bentley car. | 1st Jul 1937 | Box 156 \ 1 scan0204 | |
| Letter discussing issues with thermostat BGA.2073A, requesting modified versions, and asking for a quotation. | 1st Jul 1937 | Box 156 \ 1 scan0205 | |
| Quotation letter from The British Thermostat Co. Ltd. for 200 'Teddington' thermostats. | 2nd Jul 1937 | Box 156 \ 1 scan0206 | |
| Letter from The British Thermostat Co. Ltd. discussing thermostat specifications and plating options. | 2nd Jul 1937 | Box 156 \ 1 scan0207 | |
| The closing page of a letter from The British Thermostat Co. Ltd. | 3rd Jul 1937 | Box 156 \ 1 scan0208 | |
| Letter to The British Thermostat Co. Ltd. questioning a price quotation for thermostats and requesting a cost breakdown for modifications. | 3rd Jul 1937 | Box 156 \ 1 scan0209 | |
| Letter from the Experimental Department requesting a sample motor for car heater tests. | 8th Jul 1937 | Box 156 \ 1 scan0210 | |
| Letter to The British Thermostat Co. Ltd. requesting the manufacture of three thermostats. | 9th Jul 1937 | Box 156 \ 1 scan0211 | |
| Letter to The British Thermostat Co. Ltd. requesting two new thermostats with modified seating diameters. | 9th Jul 1937 | Box 156 \ 1 scan0212 | |
| Letter from The British Thermostat Co. Ltd. discussing the price difference between standard and modified thermostats. | 9th Jul 1937 | Box 156 \ 1 scan0213 | |
| Letter from The British Thermostat Co. Ltd. regarding the price justification for part BGA.2073A. | 9th Jul 1937 | Box 156 \ 1 scan0214 | |
| Tests on alternative thermostat schemes for a Bentley car to reduce costs. | 9th Jul 1937 | Box 156 \ 1 scan0215 | |
| Arranging the despatch of two thermostats to the British Thermostat Co. for alteration. | 9th Jul 1937 | Box 156 \ 1 scan0216 | |
| Letter from The British Thermostat Co. Ltd. regarding the return of two thermostats, part number BGA. 2073. | 10th Jul 1937 | Box 156 \ 1 scan0217 | |
| Letter to The British Thermostat Co. Ltd. regarding a quotation for thermostats and the cost of plating. | 12th Jul 1937 | Box 156 \ 1 scan0218 | |
| Letter from The British Thermostat Co. Ltd. regarding progress on the supply of small heater motors. | 12th Jul 1937 | Box 156 \ 1 scan0219 | |
| Letter from The British Thermostat Co. Ltd. confirming the production of three thermostats to drawings Ex.28300 & Rm.369. | 12th Jul 1937 | Box 156 \ 1 scan0220 | |
| Confirming a delay in parts release for M. series Bentley thermostat schemes. | 16th Jul 1937 | Box 156 \ 1 scan0221 | |
| Letter from The British Thermostat Co. Ltd. regarding a 4d allowance for plating thermostat units. | 14th Jul 1937 | Box 156 \ 1 scan0222 | |
| Letter to The British Thermostat Co. regarding the delivery of special thermostats and parts for testing. | 16th Jul 1937 | Box 156 \ 1 scan0223 | |
| The despatch of thermostat fittings and casing to the British Thermostat Co. Ltd. | 16th Jul 1937 | Box 156 \ 1 scan0224 | |
| Typed list of component parts with their corresponding quantities and part numbers. | 21th Jul 1937 | Box 156 \ 1 scan0225 | |
| Letter from Harrison Radiator Division concerning the price and specifications of thermostats. | 21th Jul 1937 | Box 156 \ 1 scan0226 | |
| Returning two thermostats to the British Thermostat Co. Ltd. for rectification. | 27th Jul 1937 | Box 156 \ 1 scan0227 | |
| Letter to The British Thermostat Co. Ltd. regarding thermostats opening at an incorrect temperature. | 27th Jul 1937 | Box 156 \ 1 scan0228 | |
| Letter from The British Thermostat Co. Ltd. concerning the return and correction of two thermostats that open at the incorrect temperature. | 28th Jul 1937 | Box 156 \ 1 scan0229 | |
| Cancelling instructions for the Bentley Thermostat Scheme on the Bentley II due to the loss of induction pipe patterns. | 30th Jul 1937 | Box 156 \ 1 scan0230 | |
| Payment instructions for an invoice from The British Thermostat Co. Ltd. | 31th Jul 1937 | Box 156 \ 1 scan0231 | |
| Official order for two thermostats to be issued to The British Thermostat Co.Ltd. | 2nd Aug 1937 | Box 156 \ 1 scan0232 | |
| Request to place an official order for a thermostat casing and thermostat for a 1937 25.HP. Vauxhall car. | 4th Aug 1937 | Box 156 \ 1 scan0233 | |
| Fitting of thermostat schemes to Bentley cars for comparison purposes. | 4th Aug 1937 | Box 156 \ 1 scan0234 | |
| Requesting a damaged thermostat be sent to The British Thermostat Co. Ltd. for repair. | 12th Aug 1937 | Box 156 \ 1 scan0235 | |
| Letter to The British Thermostat Co. Ltd. regarding the failure of a thermostat during testing and requesting comments. | 12th Aug 1937 | Box 156 \ 1 scan0236 | |
| Letter from The British Thermostat Co., Ltd. about a faulty thermostat with a fractured bellows. | 13th Aug 1937 | Box 156 \ 1 scan0237 | |
| Invoice from Harrison Radiator Division for 3 Thermostat Assemblies. | 27th Aug 1937 | Box 156 \ 1 scan0238 | |
| Request for a covering order for 3 thermostat assemblies received from the Harrison Radiator Corporation. | 30th Aug 1937 | Box 156 \ 1 scan0239 | |
| Letter requesting four modified thermostat units from The British Thermostat Co. Ltd. for experimental purposes. | 6th Sep 1937 | Box 156 \ 1 scan0240 | |
| Request for a quotation for a modified thermostat, involving the elimination of a ball valve and the drilling of a hole. | 7th Sep 1937 | Box 156 \ 1 scan0241 | |
| Inquiry to Vauxhall Motors regarding the reliability of a thermostat from the British Thermostat Co. | 7th Sep 1937 | Box 156 \ 1 scan0242 | |
| Letter from a supplier confirming the production of four thermostats with modifications and advising on despatch. | 7th Sep 1937 | Box 156 \ 1 scan0243 | |
| Letter from Vauxhall Motors regarding their experience with cooling system thermostats. | 8th Sep 1937 | Box 156 \ 1 scan0244 | |
| Letter from The British Thermostat Co. Ltd. providing a revised quotation for thermostats. | 9th Sep 1937 | Box 156 \ 1 scan0245 | |
| Letter to Vauxhall Motors Ltd. discussing thermostats on their cars and arranging a meeting to standardise a similar unit. | 10th Sep 1937 | Box 156 \ 1 scan0246 | |
| Payment for thermostats received from the British Thermostat Co. Ltd. without an official order. | 11th Sep 1937 | Box 156 \ 1 scan0247 | |
| Request for a covering order for four thermostats ordered from the British Thermostat Co. | 13th Sep 1937 | Box 156 \ 1 scan0248 | |
| Request to issue an official order for thermostats to the British Thermostat Co. Ltd. | 13th Sep 1937 | Box 156 \ 1 scan0249 | |
| Letter to the British Thermostat Co. Ltd. confirming a modification to an order for four thermostats. | 13th Sep 1937 | Box 156 \ 1 scan0250 | |
| Inquiry to Rover Motor Co. Ltd. about the reliability of bellow thermostat units. | 13th Sep 1937 | Box 156 \ 1 scan0251 | |
| Letter to Vauxhall Ltd. arranging a meeting to discuss thermostatic water temperature control. | 14th Sep 1937 | Box 156 \ 1 scan0252 | |
| Letter to S. Smith & Sons Ltd. requesting a price quote for a thermostatic bypass system for Bentley cars. | 14th Sep 1937 | Box 156 \ 1 scan0253 | |
| Letter from The Rover Company regarding thermostat usage, service trouble rates, and an enclosed drawing. | 16th Sep 1937 | Box 156 \ 1 scan0254 | |
| Letter from S. Smith & Sons discussing thermostat designs and offering alternative arrangements. | 16th Sep 1937 | Box 156 \ 1 scan0255 | |
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