| Description | Date | Identifier | |
| Letter from a car radio engineer at E.K. Cole Ltd. arranging a visit. | 14th Jan 1935 | Box 63 \ 3 scan0239 | |
| Letter from The Gramophone Company Ltd to postpone and reschedule a visit from Mr. Haigh. | 15th Jan 1935 | Box 63 \ 3 scan0240 | |
| Letter to 'His Master's Voice', The Gramophone Co. Ltd., arranging a visit for a Mr. Haigh. | 16th Jan 1935 | Box 63 \ 3 scan0241 | |
| Sending one Ekco loud-speaker to Messrs. Park War for the attention of Mr. Evernden. | 18th Jan 1935 | Box 63 \ 3 scan0242 | |
| Secret memo requesting an order for an Ecko car radio set to be fitted to a Spectre chassis. | 19th Jan 1935 | Box 63 \ 3 scan0243 | |
| Letter from The Gramophone Company Ltd arranging a visit to H.E. West. | 21th Jan 1935 | Box 63 \ 3 scan0244 | |
| Letter from The Gramophone Company (HMV) regarding a meeting and providing the weight of a radio set. | 25th Jan 1935 | Box 63 \ 3 scan0245 | |
| Secret memo discussing the location of a car radio and its components for the 32-EX model. | 26th Jan 1935 | Box 63 \ 3 scan0246 | |
| Update on the testing of car radios, comparing Phillips and Philco sets. | 29th Jan 1935 | Box 63 \ 3 scan0247 | |
| Letter to Park Ward & Co. regarding coachwork specifications for the 32-EX Continental Touring Saloon. | 30th Jan 1935 | Box 63 \ 3 scan0248 | |
| Requirements for the dash ventilation system and the instrument board layout. | 30th Jan 1935 | Box 63 \ 3 scan0249 | |
| Page detailing body design specifications for crossmembers, seating, and audio equipment. | 30th Jan 1935 | Box 63 \ 3 scan0250 | |
| Letter discussing a change of specification for the front door ventilating windows. | 30th Jan 1935 | Box 63 \ 3 scan0251 | |
| Specification of Coachwork for a 32 Ex. Continental Touring Saloon. | 3rd Jan 1935 | Box 63 \ 3 scan0252 | |
| Specifications for car body components including doors, seats, screen, head, and luggage boot. | 3rd Jan 1935 | Box 63 \ 3 scan0253 | |
| Page 3 of a document detailing specifications for vehicle bodywork and fittings, including the luggage boot, lamps, wings, and steps. | 3rd Jan 1935 | Box 63 \ 3 scan0254 | |
| Specification sheet detailing various vehicle coachwork and fitting requirements. | 3rd Jan 1935 | Box 63 \ 3 scan0255 | |
| Specification sheet detailing vehicle features like the wireless, tools, and bumpers, along with a list of applicable body drawings. | 30th Jan 1935 | Box 63 \ 3 scan0256 | |
| Comparing different car radio sets and recommending the Ekco set. | 30th Jan 1935 | Box 63 \ 3 scan0257 | |
| Letter arranging the dispatch and installation of an Ekco Wireless set for a 40/50 Continental Touring Saloon 32-EX. | 31th Jan 1935 | Box 63 \ 3 scan0258 | |
| Instruction to despatch an Ekco car radio set for fitting to experimental chassis 32-EX. | 31th Jan 1935 | Box 63 \ 3 scan0259 | |
| Letter to E.K. Cole Ltd. about fitting a car radio set into a 40/50 experimental car. | 31th Jan 1935 | Box 63 \ 3 scan0260 | |
| Letter from coachbuilders Park Ward & Co. Ltd confirming receipt of an Ekco wireless set for installation. | 1st Feb 1935 | Box 63 \ 3 scan0261 | |
| Letter from EKCO regarding the fitting of a car radio to an experimental car with a Park Ward body. | 4th Feb 1935 | Box 63 \ 3 scan0262 | |
| Poor fitting of wireless sets in cars and proposing a schedule of standard parts. | 5th Feb 1935 | Box 63 \ 3 scan0263 | |
| Responding to a query about the availability of fittings for coachbuilders installing car radio sets. | 6th Feb 1935 | Box 63 \ 3 scan0264 | |
| Complaints of spark plugs oiling up on cars that have been fitted with wireless installations. | 7th Feb 1935 | Box 63 \ 3 scan0265 | |
| Covering memo regarding a letter received from Hoopers about radio sets. | 9th Feb 1935 | Box 63 \ 3 scan0266 | |
| Letter from coachbuilders Hooper & Co. regarding the installation of Philips car radio sets. | 7th Feb 1935 | Box 63 \ 3 scan0267 | |
| Correct electrical wiring procedure for radio sets in vehicles. | 12th Feb 1935 | Box 63 \ 3 scan0268 | |
| Elusive ignition trouble related to car radio sets and proposing a solution. | 13th Feb 1935 | Box 63 \ 3 scan0269 | |
| Ignition trouble with car radio sets and the trial of new sparking plugs. | 14th Feb 1935 | Box 63 \ 3 scan0270 | |
| Letter to E.K. Cole Ltd. regarding a voltage regulator failure on a Phantom II chassis caused by the incorrect fitting of an Ekco radio condenser. | 22th Feb 1935 | Box 63 \ 3 scan0271 | |
| Instruction regarding the correct connection of a filter unit for future radio installations in cars. | 27th Feb 1935 | Box 63 \ 3 scan0272 | |
| To arrange the booking in of a K.L.G. type plug and an Ekco car radio set. | 27th Feb 1935 | Box 63 \ 3 scan0273 | |
| Dangerous short circuit caused by a faulty Philco wireless installation on a 3½-litre car. | 7th Mar 1935 | Box 63 \ 3 scan0274 | |
| Poor quality wireless installations and wiring on the 3½ Litre Bentley chassis. | 9th Mar 1935 | Box 63 \ 3 scan0275 | |
| Wireless interference issues on H.R.H. The Duke of Kent's car, chassis No. B.45.AE. | 11th Mar 1935 | Box 63 \ 3 scan0276 | |
| Wireless (radio) installations on 3½ Litre Bentley cars. | 13th Mar 1935 | Box 63 \ 3 scan0277 | |
| Bad car radio fittings that caused a fire on a Bentley, and a planned meeting with suppliers Philco and E.K. Cole. | 13th Mar 1935 | Box 63 \ 3 scan0278 | |
| Letter to Philco Radio & Television Corporation arranging a meeting to discuss faulty wireless installations and condenser units, including an issue on the Duke of Kent's Bentley. | 13th Mar 1935 | Box 63 \ 3 scan0279 | |
| Letter proposing a meeting with E.K.Cole Ltd. to discuss car radio installations, specifically suppressors and condensers. | 14th Mar 1935 | Box 63 \ 3 scan0280 | |
| Fitting of car radios and suggesting the creation of standardized installation sketches. | 15th Mar 1935 | Box 63 \ 3 scan0281 | |
| Instances of car fires and other issues caused by badly fitted radio sets. | 15th Mar 1935 | Box 63 \ 3 scan0282 | |
| Potential fire risks and sparking issues related to car radio set installations. | 18th Mar 1935 | Box 63 \ 3 scan0283 | |
| Letter from E.K. Cole Ltd (EKCO) confirming a meeting to discuss radio suppression in cars. | 18th Mar 1935 | Box 63 \ 3 scan0284 | |
| Efficient arrangement for a radio aerial in the sliding roof of the Spectre 3 car. | 21th Mar 1935 | Box 63 \ 3 scan0285 | |
| Approval of car radio sets, refuting claims made by Philips and recommending the Ekco set. | 21th Mar 1935 | Box 63 \ 3 scan0286 | |
| Letter to Philips Lamps Ltd. about fitting condenser filter units for radio sets on cars. | 21th Mar 1935 | Box 63 \ 3 scan0287 | |
| Issues with a Philco car radio installation in a Bentley for H.R.H. The Duke of Kent and recommending a replacement. | 21th Mar 1935 | Box 63 \ 3 scan0288 | |
| Letter complaining about a noisy Philco radio in the Duke of Kent's Bentley and recommending a British Ekco set. | 21th Mar 1935 | Box 63 \ 3 scan0289 | |
| Letter from KLG Sparking Plugs regarding the wireless in the Duke of Kent's car. | 22th Mar 1935 | Box 63 \ 3 scan0290 | |
| Letter from Philips Lamps Limited regarding regulations and referring a matter to their Experimental Department. | 23th Mar 1935 | Box 63 \ 3 scan0291 | |
| Letter to Philips Lamps Ltd. regarding an objection to pitting and welding of regulator contacts. | 25th Mar 1935 | Box 63 \ 3 scan0292 | |
| Letter to Park Ward & Co. regarding the installation of a wireless set and aerial in a Continental Touring Saloon, chassis 32EX. | 25th Mar 1935 | Box 63 \ 3 scan0293 | |
| Philips claiming official approval for their wireless sets. | 25th Mar 1935 | Box 63 \ 3 scan0294 | |
| Letter from Philco to Rolls-Royce regarding collaboration on car radio installation and experimental work. | 25th Mar 1935 | Box 63 \ 3 scan0295 | |
| Letter to Philco Radio & Television Corporation regarding difficulties with car radio installation, specifically interference from suppressors and voltage regulators. | 26th Mar 1935 | Box 63 \ 3 scan0296 | |
| Communication regarding the fitting of condensers to voltage-controlled dynamos. | 27th Mar 1935 | Box 63 \ 3 scan0297 | |
| Letter from coachbuilder Park Ward & Co. Ltd confirming details for the installation of a wire mesh aerial. | 27th Mar 1935 | Box 63 \ 3 scan0298 | |
| Performance of an Ekco car radio set on a Spectre 3 car. | 28th Mar 1935 | Box 63 \ 3 scan0299 | |
| Letter from Philips Lamps' Radio Department advising that fitting a condenser across the dynamo voltage regulator is unnecessary. | 28th Mar 1935 | Box 63 \ 3 scan0300 | |
| Attempts to fix noise issues with a Philco wireless installation in a car for H.R.H. the Duke of Kent. | 28th Mar 1935 | Box 63 \ 3 scan0301 | |
| Wireless interference on a vehicle for H.R.H. The Duke of Kent, chassis B.45.AE. | 29th Mar 1935 | Box 63 \ 3 scan0302 | |
| Request to E.K.Cole, Ltd. for an installation wiring diagram for an Ekco Radio Set on an experimental 40/50 chassis. | 29th Mar 1935 | Box 63 \ 3 scan0303 | |
| Philco service news bulletin for radio engineers, detailing a service plan, a technical information book, and corrections for specific sets. | 1st Mar 1935 | Box 63 \ 3 scan0304 | |
| Technical bulletin detailing the design highlights of a Philco chassis and service guidelines for radio receivers. | 1st Mar 1935 | Box 63 \ 3 scan0305 | |
| Service news bulletin for radio receivers, covering oscillators, wiring modifications, and set testers. | 1st Mar 1935 | Box 63 \ 3 scan0306 | |
| 'Philco Serviceman and Radio Manufacturers' Service News' bulletin discussing valves, batteries, and troubleshooting. | 1st Mar 1935 | Box 63 \ 3 scan0307 | |
| Short memo requesting a reply to previous correspondence regarding a car radio. | 2nd Apr 1935 | Box 63 \ 3 scan0308 | |
| Fire caused by a poorly fitted car radio condenser filter unit. | 3rd Apr 1935 | Box 63 \ 3 scan0309 | |
| Letter from radio manufacturer E.K. Cole Ltd. regarding the installation of a radio set into an experimental car chassis. | 4th Apr 1935 | Box 63 \ 3 scan0310 | |
| Producing a comprehensive statement for car radio installations on R.R. and Bentley cars. | 4th Apr 1935 | Box 63 \ 3 scan0311 | |
| Brief internal memorandum acknowledging the cause of a car radio issue. | 4th Apr 1935 | Box 63 \ 3 scan0312 | |
| Letter to Erie Resistor, Ltd. regarding the design of a standardized ignition suppressor for new chassis. | 5th Apr 1935 | Box 63 \ 3 scan0313 | |
| Letter to E.K. Cole Ltd. regarding standardizing condenser fittings for noise suppression on car radio sets in R.R. and Bentley chassis. | 8th Apr 1935 | Box 63 \ 3 scan0314 | |
| Letter from Philips Lamps Ltd. regarding the standardisation of condenser types and fitting of car radio sets. | 9th Apr 1935 | Box 63 \ 3 scan0315 | |
| Letter from Erie Resistor Limited regarding a delay in responding and arranging a meeting. | 11th Apr 1935 | Box 63 \ 3 scan0316 | |
| Ignition trouble and oiling spark plugs in cars fitted with radio sets. | 11th Apr 1935 | Box 63 \ 3 scan0317 | |
| Installation requirements for wireless sets, referencing specific feedback from Philips. | 11th Apr 1935 | Box 63 \ 3 scan0318 | |
| Letter to The Telegraph Condenser Co. Ltd. requesting specifications for a car radio condenser for noise suppression. | 11th Apr 1935 | Box 63 \ 3 scan0319 | |
| Follow-up request for a report on the performance of wireless sets in new experimental cars. | 1st Jun 1953 | Box 63 \ 3 scan0320 | |
| Letter to Philips Lamps Ltd. questioning the fitting instructions for a battery filter unit supplied with their car radio sets. | 12th Apr 1935 | Box 63 \ 3 scan0321 | |
| Ignition interference with car radios and potential solutions using sparking plug suppressors. | 12th Apr 1935 | Box 63 \ 3 scan0322 | |
| Letter to The Erie Resistor Co. Ltd. arranging a suitable day for a visit. | 12th Apr 1935 | Box 63 \ 3 scan0323 | |
| Wireless sets and the technical placement of a filter in consultation with Philips. | 12th Apr 1935 | Box 63 \ 3 scan0324 | |
| Brief communication explaining the delay in reporting on car radio sets. | 13th Apr 1935 | Box 63 \ 3 scan0325 | |
| Letter from Philips Lamps Ltd. concerning the method of connecting a battery filter to suppress interference in a Philips Car-Radio Set. | 13th Apr 1935 | Box 63 \ 3 scan0326 | |
| Letter from Philips Lamps Ltd regarding the power supply for a set versus fitting resistive suppressors. | 13th Apr 1935 | Box 63 \ 3 scan0327 | |
| Letter to Philips Lamps Ltd. regarding the placement of a filter unit and prevention of ignition interference on a Bentley. | 15th Apr 1935 | Box 63 \ 3 scan0328 | |
| Letter from Erie Resistor Limited regarding a proposed meeting. | 15th Apr 1935 | Box 63 \ 3 scan0329 | |
| The return of a faulty Philco car radio set for adjustment. | 16th Apr 1935 | Box 63 \ 3 scan0330 | |
| Letter to Philco Radio & Television Co. Ltd. regarding a faulty car radio which has developed a hum. | 16th Apr 1935 | Box 63 \ 3 scan0331 | |
| Letter from Joseph Lucas Research Laboratories regarding the fitting of a condenser for a car radio. | 16th Apr 1935 | Box 63 \ 3 scan0332 | |
| Letter from The Telegraph Condenser Company discussing the suitability of different condensers for car radio noise suppression. | 16th Apr 1935 | Box 63 \ 3 scan0333 | |
| From The Telegraph Condenser Co. Ltd. detailing variations and sizes for Paper Dielectric Condensers. | 16th Apr 1935 | Box 63 \ 3 scan0334 | |
| Letter from Philips Lamps Ltd regarding the method of fixing a Battery Filter for car radios. | 17th Apr 1935 | Box 63 \ 3 scan0335 | |
| Letter from Philips Lamps Ltd. discussing car radio installation, interference, and condensers. | 17th Apr 1935 | Box 63 \ 3 scan0336 | |
| Letter from Philips Lamps Limited regarding the specifications and availability of a condenser for a car radio. | 17th Apr 1935 | Box 63 \ 3 scan0337 | |
| Letter from E.K. Cole Ltd (EKCO) regarding suppression condensers for reducing radio interference in Rolls Royce and Bentley vehicles. | 23th Apr 1935 | Box 63 \ 3 scan0338 | |
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