| Description | Date | Identifier | |
| List of suppliers for Bakelite and similar materials like Formite, Condensite, and Elo in England. | 9th Sep 1921 | Box 39 \ 3 Scan140 | |
| Confirming samples of Paxoline have been obtained for modifications relating to Continental Bakelite. | 10th Aug 1921 | Box 39 \ 3 Scan141 | |
| Order for sample Bakelite insulations for experimental purposes from Continental Fibre Co. | 19th Aug 1921 | Box 39 \ 3 Scan142 | |
| On the availability of Paxolin and Bakelite as substitute insulating materials for experimental units. | 19th Aug 1921 | Box 39 \ 3 Scan143 | |
| Page 2 of a memo regarding samples from Swiss Insulating Works Ltd. and attached recommendations. | 19th Aug 1921 | Box 39 \ 3 Scan144 | |
| Table of recommended changes to insulation materials for various electrical components. | 23th Aug 1921 | Box 39 \ 3 Scan145 | |
| Correspondence and samples of Condensite Celeron and Vulcanized fibre from Diamond State Fibre Co. | 23th Aug 1921 | Box 39 \ 3 Scan146 | |
| Letter from Rolls-Royce of America to the London office regarding material samples and an attached letter from the manufacturer. | 5th Aug 1921 | Box 39 \ 3 Scan147 | |
| Letter from Diamond State Fibre Company regarding the use of Condensite Celoron for timing gears. | 30th Jun 1921 | Box 39 \ 3 Scan148 | |
| Instruction to hand over six sample pieces of Bakelite Delecto from Springfield. | 26th Aug 1921 | Box 39 \ 3 Scan149 | |
| Quoting a letter from Metropolitan-Vickers Electrical Co. Ltd. about receiving Bakelite Micarta insulation samples. | 25th Aug 1921 | Box 39 \ 3 Scan150 | |
| Modified list of substitute experimental insulation materials for electrical units. | 31th Aug 1921 | Box 39 \ 3 Scan151 | |
| Table outlining experimental insulation material changes for various electrical components. | 31th Aug 1921 | Box 39 \ 3 Scan152 | |
| Handing over Bakelite product insulations from the U.S.A for an actuator box, main switch, and battery ignition ballast. | 31th Aug 1921 | Box 39 \ 3 Scan153 | |
| The replacement of insulation materials on a ballast resistance unit and potential heat-related failure. | 9th Sep 1921 | Box 39 \ 3 Scan154 | |
| Request for particulars on standard sizes of Micarta Bakelite sheets and tubing. | 9th Sep 1921 | Box 39 \ 3 Scan155 | |
| Attaching a previously omitted report on comparative tests of Bakelite and 'Elo' mouldings. | 15th Sep 1921 | Box 39 \ 3 Scan156 | |
| The performance and adoption of Bakelite-Micarta bushes to replace fibre bushes in magnetos. | 16th Sep 1921 | Box 39 \ 3 Scan157 | |
| Recommendation to obtain Bakelite-micarta bushes from Springfield for use in magnetos. | 16th Sep 1921 | Box 39 \ 3 Scan158 | |
| Sourcing and testing of linen, cotton, and canvas Bakelite rod for magnetos. | 20th Sep 1921 | Box 39 \ 3 Scan159 | |
| Material change from fibre to linen Bakelite rod for Contact Breaker Lever bushes by North & Sons Ltd. at no extra cost. | 21th Sep 1921 | Box 39 \ 3 Scan160 | |
| Sourcing and testing of various Bakelite and similar plastic products. | 21th Sep 1921 | Box 39 \ 3 Scan161 | |
| Quality and sourcing of various insulating materials. | 21th Sep 1921 | Box 39 \ 3 Scan162 | |
| Results of comparative tests on Bakelite and 'Elo' mouldings. | 29th Sep 1921 | Box 39 \ 3 Scan163 | |
| Ordering a stock of Bakelite-Dilecto sheets and tubes, and clarifying the terminology. | 9th Nov 1921 | Box 39 \ 3 Scan164 | |
| Clarifying the composition of various insulating materials like Bakelite and Paxolin, and suggesting standardization. | 11th Nov 1921 | Box 39 \ 3 Scan165 | |
| Requesting the ordering of Bakelite-Dilecto sheets and tubes for stock. | 11th Nov 1921 | Box 39 \ 3 Scan166 | |
| Relative merits and availability of different types of Bakelite products. | 12th Nov 1921 | Box 39 \ 3 Scan167 | |
| Suppliers, pricing, and material specifications for Continental Bakelite tubes and rods. | 14th Nov 1921 | Box 39 \ 3 Scan168 | |
| Letter from Robert W. Blackwell & Co. Ltd. providing a price list for Bakelite-Dilecto and Continental Bakelite sheets. | 3rd Oct 1921 | Box 39 \ 3 Scan169 | |
| Letter from Robert W. Blackwell & Co. Ltd. regarding samples of Bakelite-Dilecto for experimental purposes. | 3rd Oct 1921 | Box 39 \ 3 Scan170 | |
| Quotation letter from Robert W. Blackwell & Co. Ltd. for the supply of Bakelite-Dilecto tubing and Bakelised Canvas. | 5th Oct 1921 | Box 39 \ 3 Scan171 | |
| Extract regarding production delays and material choices for the Goshawk engine's electrical equipment commutator. | 9th Nov 1921 | Box 39 \ 3 Scan172 | |
| Specifying the types of Bakelite products required for various applications. | 16th Nov 1921 | Box 39 \ 3 Scan173 | |
| Instruction to change washers from Hard Red Fibre to Continental Bakelite for the 40/50 & Goshawk II chassis. | 9th Jan 1922 | Box 39 \ 3 Scan174 | |
| Shrinkage of Continental Bakelite sheets and proposing tests on alternative materials like Paxolin and Bakelite Dilecto. | 20th Feb 1922 | Box 39 \ 3 Scan175 | |
| Instruction to acquire various Bakelite products for shrinking tests. | 6th Apr 1922 | Box 39 \ 3 Scan176 | |
| Heat resistance tests for two forms of asbestos moulded bakelite for the Goshawk II Commutator. | 23th May 1922 | Box 39 \ 3 Scan177 | |
| The use of mica dust as a filling for bakelite, comparing its properties to shellac, and an update on a failed commutator. | 25th May 1922 | Box 39 \ 3 Scan178 | |
| Two types of insulating bakelite powders, one with granular asbestos and one with fibrous asbestos filling. | 25th May 1922 | Box 39 \ 3 Scan179 | |
| To Mr. Brock confirming the visit of a Mouldensite representative. | 1st Jun 1922 | Box 39 \ 3 Scan180 | |
| Request for moulded Bakelite plates made from granulla and fibrous products for testing purposes. | 14th Jun 1922 | Box 39 \ 3 Scan181 | |
| Letter from Mouldensite Company regarding an order for moulding powder and its British manufacture. | 24th Jun 1922 | Box 39 \ 3 Scan182 | |
| Using Bakelite insulations for an actuator box and main switch for potential standardisation. | 27th Jun 1922 | Box 39 \ 3 Scan183 | |
| Difficulties with moulding powders and a comparison between American Bakelite and British alternatives. | 7th Aug 1922 | Box 39 \ 3 Scan184 | |
| Instructions for testing three moulded covers made from different materials (Mouldensite, Bakelite & Elo) to assess performance after heating. | 20th Jul 1922 | Box 39 \ 3 Scan185 | |
| Chasing the return of a battery ignition ballast resistance that was provided for testing. | 20th Jul 1922 | Box 39 \ 3 Scan186 | |
| The use of Bakelite insulations for an actuator box and main switch. | 20th Jul 1922 | Box 39 \ 3 Scan187 | |
| Use of bakelite dilecto washers for a 40/50 ballast resistance unit. | 27th Jul 1922 | Box 39 \ 3 Scan188 | |
| To Mr. Brock rescheduling a visit from Mouldensite representatives. | 31th Jul 1922 | Box 39 \ 3 Scan189 | |
| Letter from Westinghouse discussing the manufacturing challenges and development costs of Bakelite commutators. | 31th Jul 1922 | Box 39 \ 3 Scan190 | |
| With recommendations on the use of Bakelite moulded commutators, citing economy and potential shrinkage issues. | 12th Aug 1922 | Box 39 \ 3 Scan191 | |
| Internal inquiry regarding the manufacturing of moulded bakelite commutators in the USA and the sourcing of bakelite powder. | 4th Aug 1922 | Box 39 \ 3 Scan192 | |
| Use of Mouldensite powder with an asbestos filler for dynamo commutators. | 9th Aug 1922 | Box 39 \ 3 Scan193 | |
| Letter from the Springfield, Mass. office to London regarding Bakelite commutators. | 24th Aug 1922 | Box 39 \ 3 Scan194 | |
| Letter from General Bakelite Company regarding designs for a commutator mold. | 1st Sep 1922 | Box 39 \ 3 Scan195 | |
| Letter from the General Bakelite Company discussing the molding and supply of Bakelite materials for commutators. | 7th Oct 1922 | Box 39 \ 3 Scan196 | |
| Changes to insulation materials for a main switch, actuator box, and ballast resistance. | 12th Sep 1922 | Box 39 \ 3 Scan197 | |
| Tests of moulded insulating materials like Bakelite, including feedback from American manufacturers. | 14th Sep 1922 | Box 39 \ 3 Scan198 | |
| Production methods and the use of moulded commutators for the Goshawk starter motor. | 10th Aug 1922 | Box 39 \ 3 Scan199 | |
| Comparative tests on insulating materials Elo, black Mouldensite, and brown Mouldensite. | 10th Aug 1922 | Box 39 \ 3 Scan200 | |
| Comparative heat test of insulation specimens, detailing shrinkage and distortion. | 12th Sep 1922 | Box 39 \ 3 Scan201 | |
| Attaching information about Bakelite moulded commutators from the General Bakelite Co. of America for experimental work. | 21th Sep 1922 | Box 39 \ 3 Scan202 | |
| Letter from the American office to the UK office forwarding correspondence regarding Bakelite Commutators. | 22th Sep 1922 | Box 39 \ 3 Scan203 | |
| Attached note from Mr. Royce and a forthcoming new design for the Goshawk ignition coil. | 13th Nov 1922 | Box 39 \ 3 Scan204 | |
| Electrostatic dielectric losses and casing materials for the Goshawk ignition coil. | 11th Nov 1922 | Box 39 \ 3 Scan205 | |
| Suitable insulation materials for electrical coils, comparing stabalite, ebonite, rubber, and bakelite. | 11th Nov 1922 | Box 39 \ 3 Scan206 | |
| Analysis of ignition coil failures and proposed solutions involving insulation materials and component placement. | 15th Nov 1922 | Box 39 \ 3 Scan207 | |
| Instructions detailing tests on Goshawk ignition coil cases to investigate electrostatic and leakage effects. | 15th Nov 1922 | Box 39 \ 3 Scan208 | |
| The effects of heat on capacity, losses, and spark length in phenol materials like Elo and Bakelite. | 6th Nov 1918 | Box 39 \ 3 Scan209 | |
| Instructions for testing electrical leakage in condenser cases at high temperatures. | 6th Nov 1918 | Box 39 \ 3 Scan210 | |
| Technical notes on experiments with misfiring, spark extinction, and the properties of various insulating materials for coils. | 6th Nov 1918 | Box 39 \ 3 Scan211 | |
| Comparative strength tests of three moulding materials: 'Bakelite', 'Elo', & 'Mouldensite'. | 18th Dec 1922 | Box 39 \ 3 Scan212 | |
| Machining and comparative strength tests conducted on various insulating materials. | 30th Jan 1923 | Box 39 \ 3 Scan213 | |
| Comparative loading and high voltage breakdown tests of Stabalite and Beldalite materials at various temperatures. | 30th Jan 1923 | Box 39 \ 3 Scan214 | |
| The electrical breakdown voltage tests of various insulating materials. | 9th Jan 1923 | Box 39 \ 3 Scan215 | |
| Test results of canvas and fibre core material specimens. | 30th Jan 1923 | Box 39 \ 3 Scan216 | |
| The supplier Robert W. Blackwell & Co. Ltd., issues with their Bakelite sheets, and alternative materials. | 12th Mar 1928 | Box 39 \ 3 Scan217 | |
| Correspondence regarding a special material, N.P. Stock Fibre, for use on friction surfaces. | 26th Mar 1923 | Box 39 \ 3 Scan218 | |
| Instruction memo regarding the in-house production of GII wiring tubes. | 5th Jun 1923 | Box 39 \ 3 Scan219 | |
| Insulation issues and the standardisation of ignition coils. | 26th Jul 1923 | Box 39 \ 3 Scan220 | |
| Instruction sheet regarding a sample of Redmanol insulation varnish for experimentation and testing. | 20th Aug 1923 | Box 39 \ 3 Scan221 | |
| The comparison of sparking performance for ignition coils with cases made of various materials. | 3rd Sep 1923 | Box 39 \ 3 Scan222 | |
| Temperature tests of ignition coils housed in cases made of various materials. | 1st Sep 1923 | Box 39 \ 3 Scan223 | |
| Test report on a coil connected to six graduated spark gaps, recording sparking performance over a 120 minute period. | 1st Sep 1923 | Box 39 \ 3 Scan224 | |
| Test 2, detailing the maximum regular sparking gap over time for various insulation materials. | 6th Mar 1924 | Box 39 \ 3 Scan225 | |
| Attached report on tests conducted on Redmanol varnish. | 6th Mar 1924 | Box 39 \ 3 Scan226 | |
| Results of various tests conducted on Redmanol Varnish. | 6th Mar 1924 | Box 39 \ 3 Scan227 | |
| Cover letter for an attached report regarding further tests on Redmanol varnish. | 19th May 1924 | Box 39 \ 3 Scan228 | |
| Further tests conducted on Redmanol Varnish. | 16th May 1924 | Box 39 \ 3 Scan229 | |
| The hot and cold bursting test of a moulded commutator to determine failure points. | 4th Jul 1924 | Box 39 \ 3 Scan230 | |
| Suggestion to test a new moulded synthetic material (Bakelite) for Slipper Drive Damper Plates on an experimental car. | 28th Aug 1924 | Box 39 \ 3 Scan231 | |
| Report on Coils in Redmanol cases and a proposal from Mr. Brock to produce mouldings in-house. | 11th Apr 1924 | Box 39 \ 3 Scan232 | |
| Report on Redmanol coil cases and comparing them to Stabalite cases. | 29th Oct 1924 | Box 39 \ 3 Scan233 | |
| Expressing concerns about the potential unreliability and treacherous nature of Redmanol material for coil cases. | 5th Nov 1924 | Box 39 \ 3 Scan234 | |
| New Laminated Paper and Laminated Bakelized Canvas from J.Burns Ltd. | 1st Apr 1925 | Box 39 \ 3 Scan235 | |
| Tests of contact breaker rubbing block material, and in particular of Bone Grey fibre. | 1st Jul 1925 | Box 39 \ 3 Scan236 | |
| Comparative tests between bone grey fibre and continental bakelite, proposing the standardisation of the fibre material. | 1st Jul 1925 | Box 39 \ 3 Scan237 | |
| Hygroscopic and wear tests comparing bone grey fibre with bakelite. | 1st Jul 1925 | Box 39 \ 3 Scan238 | |
| Summary of wear tests conducted on continental bakelite and bone grey fibre components. | 1st Jul 1925 | Box 39 \ 3 Scan239 | |
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