| Description | Date | Identifier | |
| Request to modify the 21-G-IV exhaust system by fitting a larger expansion box and modifying the rear silencer. | 5th Nov 1934 | Box 104 \ 2 scan0116 | |
| Standardisation of a front exhaust expansion box in staybrite and lagged. | 23th Oct 1934 | Box 104 \ 2 scan0117 | |
| Estimated cost for extra jigs, tools, and equipment for a chassis modification, including Spherical Suspension. | 18th Sep 1934 | Box 104 \ 2 scan0118 | |
| Standardisation of parts for an exhaust suspension by spherical joints on a bracket. | 23th Oct 1934 | Box 104 \ 2 scan0119 | |
| Reference note for details on a front exhaust expansion box. | 6th Nov 1934 | Box 104 \ 2 scan0120 | |
| Query regarding the status of the new Huntington-Heberlein type silencer. | 6th Nov 1934 | Box 104 \ 2 scan0121 | |
| Testing and performance of a new Huntington-Heberlein silencer. | 8th Nov 1934 | Box 104 \ 2 scan0122 | |
| Brief report on the test of a Huntington & Heberlein silencer, concluding the design lacks promise. | 16th Nov 1934 | Box 104 \ 2 scan0123 | |
| Tests conducted on a 'Brown' silencer for a 25 HP exhaust system. | 14th Nov 1934 | Box 104 \ 2 scan0124 | |
| Blueprint of a Huntington & Heberlein Silencer. | 14th Nov 1934 | Box 104 \ 2 scan0125 | |
| Summary of tests on different exhaust systems for a 25 HP car. | 14th Nov 1934 | Box 104 \ 2 scan0126 | |
| Assessment of a Graham-Paige silencer's suitability, noise, weight, and material quality in comparison to other designs. | 14th Nov 1934 | Box 104 \ 2 scan0127 | |
| Proposal to experimentally try stronger springs for the 25-HP exhaust suspension to resolve knocking complaints. | 19th Jan 1935 | Box 104 \ 2 scan0128 | |
| Requesting the creation of 6 experimental stronger springs for a 25 HP exhaust suspension system to fix knocking. | 21th Jan 1935 | Box 104 \ 2 scan0129 | |
| Urgent need to fix a silencer rattle or cracking issue on the 25 HP chassis. | 17th Jan 1935 | Box 104 \ 2 scan0130 | |
| Instruction detailing the replacement of a spring for suspension links on the 20/25 HP chassis. | 24th Jan 1935 | Box 104 \ 2 scan0131 | |
| Request to produce six E.60449 springs for testing on 20/25 HP exhaust fittings. | 25th Jan 1935 | Box 104 \ 2 scan0132 | |
| Testing of a small exhaust snout on a 20/25 HP car and its effect on noise. | 13th May 1935 | Box 104 \ 2 scan0133 | |
| Requesting to test a 25 HP car to observe the exhaust boom and fish tail hiss. | 14th May 1935 | Box 104 \ 2 scan0134 | |
| Short memo regarding an exhaust snout and arranging a test for 20/25 HP cars. | 17th May 1935 | Box 104 \ 2 scan0135 | |
| Testing an 'exhaust snout' on a car experiencing an 'exhaust boom'. | 23th May 1935 | Box 104 \ 2 scan0136 | |
| Brief summary of road tests conducted on various 6-port induction manifolds. | 29th Jun 1935 | Box 104 \ 2 scan0137 | |
| Extract for a conference regarding a customer complaint about an exhaust boom at 30 mph in car GLG-78. | 20th Sep 1935 | Box 104 \ 2 scan0138 | |
| Reminder regarding an unresolved exhaust complaint on chassis GLC-78. | 20th Sep 1935 | Box 104 \ 2 scan0139 | |
| Arranging for a car to be brought to Cricklewood to test improvements for an exhaust boom. | 20th Sep 1935 | Box 104 \ 2 scan0140 | |
| Arranging a test drive of car GSF-4 to investigate a 30 m.p.h. exhaust boom. | 20th Sep 1935 | Box 104 \ 2 scan0141 | |
| Confirming an appointment to investigate exhaust and potential clutch judder complaints at Cricklewood. | 21th Sep 1935 | Box 104 \ 2 scan0142 | |
| The investigation and resolution of a 30 m.p.h. exhaust boom issue on a trials car. | 26th Sep 1935 | Box 104 \ 2 scan0143 | |
| Complaint from Lady Latham regarding an exhaust boom on her car. | 26th Sep 1935 | Box 104 \ 2 scan0144 | |
| Invoice from Lane & Girvan Ltd for two motor exhaust manifolds, with a handwritten annotation questioning the cost. | 27th Sep 1935 | Box 104 \ 2 scan0145 | |
| Loan of two exhaust manifolds to Lane & Girvan Ltd. for black vitreous enamelling as a work sample. | 1st Oct 1935 | Box 104 \ 2 scan0146 | |
| Solution for exhaust boom at 30 m.p.h. on the 20/25 HP model using a new 'snout'. | 8th Oct 1935 | Box 104 \ 2 scan0147 | |
| Exhaust boom on a 20/25 HP model, the supply of mounts and future standardization. | 9th Oct 1935 | Box 104 \ 2 scan0148 | |
| Standardization and finish options for exhaust snouts on 20/25 HP trial cars. | 10th Oct 1935 | Box 104 \ 2 scan0149 | |
| 30 m.p.h. exhaust boom on a 20/25 HP model and requesting 'snouts' for new Trials Cars. | 17th Oct 1935 | Box 104 \ 2 scan0150 | |
| Drawing LeC.4756 for a swan neck nozzle to address an exhaust boom on the 20/25 HP model. | 16th Oct 1935 | Box 104 \ 2 scan0151 | |
| 20/25 HP Vitreous enamelled exhaust manifold showing signs of burning after a 150-mile trial. | 22th Oct 1935 | Box 104 \ 2 scan0152 | |
| Requesting the return of a 20/25 HP exhaust manifold. | 23th Oct 1935 | Box 104 \ 2 scan0153 | |
| Request to manufacture three exhaust nozzles for a 25 HP exhaust system. | 23th Oct 1935 | Box 104 \ 2 scan0154 | |
| Correspondence regarding the changeover of a 20/25 HP special black Vitreous enamelled exhaust manifold. | 24th Oct 1935 | Box 104 \ 2 scan0155 | |
| Correspondence regarding the return and refitting of a 20/25 HP exhaust manifold. | 31th Oct 1935 | Box 104 \ 2 scan0156 | |
| Apologising for a delay in returning an exhaust manifold for a 20/25 HP model which was lost in the Repair Dept. | 1st Nov 1935 | Box 104 \ 2 scan0157 | |
| Return of a black vitreous enamelled exhaust manifold from a 20/25 HP sales trials car. | 15th Nov 1935 | Box 104 \ 2 scan0158 | |
| Confirming the return of a 20/25-HP exhaust manifold and other parts via lorry. | 16th Nov 1935 | Box 104 \ 2 scan0159 | |
| Letter regarding the performance and cracking of two black vitreous enamelled exhaust manifolds during testing. | 20th Nov 1935 | Box 104 \ 2 scan0160 | |
| Testing an exhaust tail pipe adaptor for the 20/25 HP model to cure a 30 M.P.H. 'boom' noise. | 22th Nov 1935 | Box 104 \ 2 scan0161 | |
| Condition of a stove enamelled exhaust snout after a month of use and comparing it to a chrome plated one. | 27th Nov 1935 | Box 104 \ 2 scan0162 | |
| Letter from a supplier regarding the vitreous enamel finish on two exhaust manifolds. | 25th Nov 1935 | Box 104 \ 2 scan0163 | |
| Modified exhaust system for the Large Bore 25 HP chassis. | 20th Dec 1935 | Box 104 \ 2 scan0164 | |
| Blueprint for a 20/25 Front Expansion Box with cross-sectional dimensions. | 15th Jan 1936 | Box 104 \ 2 scan0165 | |
| Modifications for a 25-30 Front Expansion Box. | 15th Jan 1936 | Box 104 \ 2 scan0166 | |
| Customer complaints about wear on clutch fabrics, cylinder blocks, and silencers for the 20/25 model. | 16th Jan 1936 | Box 104 \ 2 scan0167 | |
| Cancelling an order for 6 sets of induction and exhaust manifolds and substituting them for the 25/30 HP model. | 29th Jan 1936 | Box 104 \ 2 scan0168 | |
| Proposal to use a black enamelled induction pipe on the 25-30 chassis, pending testing and cost analysis. | 29th Jan 1936 | Box 104 \ 2 scan0169 | |
| Clarifying that an exhaust tail pipe adapter is not required for the Big Bore 25 HP car. | 3rd Feb 1936 | Box 104 \ 2 scan0170 | |
| Comparing the design, complexity, and efficiency of a proprietary air silencer against a Packard equivalent. | 4th Feb 1936 | Box 104 \ 2 scan0171 | |
| Cross-section photograph of two cylindrical metal components. | 28th Feb 1936 | Box 104 \ 2 scan0172 | |
| Cost analysis of the 20/25 HP chassis exhaust system, focusing on material and labour without overheads. | 28th Feb 1936 | Box 104 \ 2 scan0173 | |
| Reducing the cost of suspension for the Wraith II model by using less costly, self-lubricating materials. | 28th Feb 1936 | Box 104 \ 2 scan0174 | |
| Engine silencing and the costs of sound insulation for the chassis floor and bodywork. | 28th Feb 1936 | Box 104 \ 2 scan0175 | |
| Dissatisfaction with high exhaust system costs and outlining strategies for reduction through material and design changes. | 3rd Mar 1936 | Box 104 \ 2 scan0176 | |
| Efficiency and cost of engine exhaust systems and intake silencers for various car models. | 3rd Mar 1936 | Box 104 \ 2 scan0177 | |
| High cost of the Vokes Air Filter EB.2772 and the search for cheaper alternatives. | 28th Feb 1936 | Box 104 \ 2 scan0178 | |
| Potential adoption of metal spraying treatment for exhaust tail pipes. | 9th Mar 1936 | Box 104 \ 2 scan0179 | |
| 'Aluminized' metal spraying process for exhaust pipes and related components. | 19th Mar 1936 | Box 104 \ 2 scan0180 | |
| Letter regarding a 'metal sprayed' exhaust pipe treatment on a 20/25 HP car. | 27th Mar 1936 | Box 104 \ 2 scan0181 | |
| Cost reduction measures for the chassis exhaust system. | 30th Mar 1936 | Box 104 \ 2 scan0182 | |
| Letter to a customer requesting details about a 'metal sprayed' exhaust pipe process. | 1st Apr 1936 | Box 104 \ 2 scan0183 | |
| Acknowledgment of an order for a Burgess Air Cleaner Element with a copper gimp filter medium for testing. | 2nd Apr 1936 | Box 104 \ 2 scan0184 | |
| Letter from The British Oxygen Company Ltd regarding the results of metal spraying an exhaust pipe. | 3rd Apr 1936 | Box 104 \ 2 scan0185 | |
| Letter from The British Oxygen Company Ltd regarding metal spraying and aluminising processes for car and aero parts. | 3rd Apr 1936 | Box 104 \ 2 scan0186 | |
| Letter from The British Oxygen Company Ltd. regarding a bitumastic compound and a metal spraying demonstration. | 3rd Apr 1936 | Box 104 \ 2 scan0187 | |
| Letter to The British Oxygen Co. Ltd. regarding the 'Aluminized' treatment for an exhaust tail pipe. | 15th Apr 1936 | Box 104 \ 2 scan0188 | |
| Cost savings for the 25/30 HP exhaust system. | 15th Apr 1936 | Box 104 \ 2 scan0189 | |
| Letter from Burgess Products Company regarding the design of an experimental exhaust silencer for the 'Wraith' chassis. | 17th Apr 1936 | Box 104 \ 2 scan0190 | |
| Letter from The British Oxygen Company declining to duplicate metal spraying experiments on an exhaust system. | 17th Apr 1936 | Box 104 \ 2 scan0191 | |
| Requesting an official order for aluminizing a 20/25 HP exhaust tail pipe. | 20th Apr 1936 | Box 104 \ 2 scan0192 | |
| Letter to Metallisation Ltd. regarding the aluminizing of a 20/25 HP exhaust tail pipe. | 20th Apr 1936 | Box 104 \ 2 scan0193 | |
| Letter to The Burgess Products Company regarding an exhaust silencer for a 'Wraith' chassis and a 25/30 HP car. | 22th Apr 1936 | Box 104 \ 2 scan0194 | |
| Letter from Burgess Products Company requesting additional data for an experimental exhaust silencer for a 25/30 HP car. | 24th Apr 1936 | Box 104 \ 2 scan0195 | |
| Letter to The Burgess Products Company providing the compression ratio and maximum revs for the 25/30 HP engine. | 27th Apr 1936 | Box 104 \ 2 scan0196 | |
| Letter from Burgess Products Company acknowledging receipt of information on the compression ratio of the 25/30 HP engine. | 28th Apr 1936 | Box 104 \ 2 scan0197 | |
| Acknowledgement of order for a Burgess Exhaust Silencer for testing on a 25/30 HP car. | 7th May 1936 | Box 104 \ 2 scan0198 | |
| Letter from Burgess Products Company regarding the dispatch of an experimental exhaust silencer and enclosing related bulletins. | 7th May 1936 | Box 104 \ 2 scan0199 | |
| Product data sheet for Burgess Acousti-Pad, a sound absorbent for air-conditioning duct noises. | 1st Mar 1936 | Box 104 \ 2 scan0200 | |
| Product data sheet for Burgess Acousti-Pad, a sound-absorbing duct lining, with charts and tables for noise level calculations. | 1st Jan 1936 | Box 104 \ 2 scan0201 | |
| Bulletin explaining noise measurement with a decibel chart comparing various common sound sources. | 1st Mar 1936 | Box 104 \ 2 scan0202 | |
| Informational document explaining the concept of sound intensity, the decibel scale, and calculations for noise level management. | 1st Jan 1936 | Box 104 \ 2 scan0203 | |
| Letter to The Burgess Products Co. Ltd. arranging to fit an exhaust system to a car for testing. | 8th May 1936 | Box 104 \ 2 scan0204 | |
| Letter from Burgess Products Company regarding a delay in dispatching an experimental exhaust silencer. | 8th May 1936 | Box 104 \ 2 scan0205 | |
| Letter from Burgess Products Company offering to cooperate on silencer tests. | 11th May 1936 | Box 104 \ 2 scan0206 | |
| Rattling exhaust systems on 25 HP cars, identifying the intermediate pipe stay as the cause. | 26th May 1936 | Box 104 \ 2 scan0207 | |
| A rattling stay on the 25 HP exhaust system and a proposed modification. | 7th Mar 1935 | Box 104 \ 2 scan0208 | |
| Letter from Burgess Products Company enquiring about the testing of a new experimental exhaust silencer. | 26th May 1936 | Box 104 \ 2 scan0209 | |
| Letter to The Burgess Products Company regarding a delay in testing an exhaust silencer. | 27th May 1936 | Box 104 \ 2 scan0210 | |
| Letter from Burgess Products Company regarding the testing of an experimental exhaust silencer. | 28th May 1936 | Box 104 \ 2 scan0211 | |
| Requesting the fitting of a Burgess exhaust silencer to component GAE-20. | 29th May 1936 | Box 104 \ 2 scan0212 | |
| Customer complaints of exhaust rattles on the 20/25 HP model. | 27th May 1936 | Box 104 \ 2 scan0213 | |
| Letter from Burgess Products Company arranging a test of an experimental exhaust silencer. | 12th Jun 1936 | Box 104 \ 2 scan0214 | |
| Issue with the 25 HP exhaust system's rear silencer fouling a cross member. | 15th Jun 1936 | Box 104 \ 2 scan0215 | |
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