| Description | Date | Identifier | |
| Letter discussing the Vulture engine's progress, valve reports, and a design comparison with the Curtiss Conqueror. | 28th Jan 1934 | Box 173 \ 1 img242 | |
| Comparing competitor engine mounting and smoothness. | 28th Jan 1934 | Box 173 \ 1 img243 | |
| On Detroit Athletic Club letterhead discussing engine options like the straight 8, 12-cylinder, and V8 for a possible 20/25 replacement. | 8th Feb 1934 | Box 173 \ 1 img244 | |
| Cablegram detailing bearing temperature and material composition for comparative rig tests. | 8th Feb 1934 | Box 173 \ 1 img245 | |
| Night letter cablegram regarding a front brake judder issue. | 9th Feb 1934 | Box 173 \ 1 img246 | |
| Continuation page detailing spring movement specifications. | 9th Feb 1934 | Box 173 \ 1 img247 | |
| Packard engine testing, crankshaft bearing options, and solutions for brake judder. | 9th Feb 1934 | Box 173 \ 1 img248 | |
| Letter from the USA detailing observations on American engine designs and automotive trends. | 28th Jan 1934 | Box 173 \ 1 img249 | |
| Lack of enthusiasm for a V.8 engine and considering alternative engine configurations. | 9th Feb 1934 | Box 173 \ 1 img250 | |
| Telegram received by telephone reporting on engine bearing issues. | 9th Feb 1934 | Box 173 \ 1 img251 | |
| Telegram received by telephone regarding action on a scheme and drawings. | 10th Feb 1934 | Box 173 \ 1 img252 | |
| Telegram received by telephone discussing a Terraplane gearbox. | 10th Feb 1934 | Box 173 \ 1 img253 | |
| Telegram received by telephone regarding the examination of a front pneumatic tyre on a specific car. | 10th Feb 1934 | Box 173 \ 1 img254 | |
| Form for a telegram received by telephone. | 10th Feb 1934 | Box 173 \ 1 img255 | |
| Telegram received by telephone from Buffalo regarding the dispatch of bearings for Allison. | 10th Feb 1934 | Box 173 \ 1 img256 | |
| Transcribing three cablegrams received from the USA. | 10th Feb 1934 | Box 173 \ 1 img257 | |
| Cablegram from Detroit regarding a disappointing engine ride and proposed design alternatives. | 9th Feb 1934 | Box 173 \ 1 img258 | |
| Cablegram from Detroit regarding the study of an American Terraplane gearbox and engine. | 10th Feb 1934 | Box 173 \ 1 img259 | |
| Completely blacked-out page with no visible text or information. | 10th Feb 1934 | Box 173 \ 1 img260 | |
| Telegram message received via telephone. | 10th Feb 1934 | Box 173 \ 1 img261 | |
| Telegram received by telephone regarding a new gearbox clutch and fatigue issues. | 11th Feb 1940 | Box 173 \ 1 img262 | |
| Crossed-out telegram form received by telephone. | 10th Mar 1931 | Box 173 \ 1 img263 | |
| Form for recording a telegram received by telephone. | 10th Feb 1934 | Box 173 \ 1 img264 | |
| Cablegram regarding the dispatch of bearings and a visit to Gleasons concerning bevel gear figures. | 10th Feb 1934 | Box 173 \ 1 img265 | |
| Telegram from Detroit reporting on an engine rattle issue with a Cadillac. | 12th Feb 1934 | Box 173 \ 1 img266 | |
| Telegram message comparing the horsepower of water-cooled and air-cooled single-cylinder engines. | 10th May 1933 | Box 173 \ 1 img267 | |
| Telegram received by telephone regarding the commencement of bearing production. | 12th Feb 1934 | Box 173 \ 1 img268 | |
| Telegram received by telephone regarding a query about undertaking bearing production. | 19th Feb 1934 | Box 173 \ 1 img269 | |
| Telegram reporting on the performance and technical details of a Cadillac engine. | 19th Feb 1934 | Box 173 \ 1 img270 | |
| Telegram regarding a water-cooled single-cylinder engine having 50% more horsepower than an air-cooled one. | 12th Feb 1934 | Box 173 \ 1 img271 | |
| Telegram received by telephone regarding the commencement of bearing production and supply arrangements. | 12th Feb 1934 | Box 173 \ 1 img272 | |
| Telegram received by telephone regarding potential difficulties with manufacturing marine type bearings. | 12th Feb 1934 | Box 173 \ 1 img273 | |
| Cable advice from Western Union confirming that a cablegram has been forwarded. | 12th Feb 1934 | Box 173 \ 1 img274 | |
| Cablegram regarding bearing production, supply, and potential manufacturing difficulties. | 12th Feb 1934 | Box 173 \ 1 img275 | |
| Night letter cable containing a coded message sent to Detroit, USA. | 12th Feb 1934 | Box 173 \ 1 img276 | |
| Continuation of a night letter cable regarding a decision on which car to purchase. | 12th Feb 1934 | Box 173 \ 1 img277 | |
| Relaying the content of two cables received from the U.S.A. | 12th Aug 1934 | Box 173 \ 1 img278 | |
| Report from the U.S.A. on a Bentley in Detroit, detailing issues with high RPM boom and front brake performance, and commenting on the US automotive market. | 30th Jan 1934 | Box 173 \ 1 img279 | |
| Technical report discussing engine design, body resonance, and noise reduction experiments for coachwork. | 12th Feb 1934 | Box 173 \ 1 img280 | |
| Technical memo discussing exhaust systems, including a comparison with Cadillac silencers and notes on noise measurement. | 12th Feb 1934 | Box 173 \ 1 img281 | |
| Notes on shell noise, pipe vibration, silencers, and observations on Cadillac's straight-eight engine and electrical components. | 12th Feb 1934 | Box 173 \ 1 img282 | |
| Notes on Delco high-speed coils, starting motors, dynamos, and frame design. | 24th Feb 1934 | Box 173 \ 1 img283 | |
| Engine inertia, mounting, frame frequency, volumetric efficiency, and clutches. | 12th Feb 1934 | Box 173 \ 1 img284 | |
| Bentley in Detroit, detailing issues with vehicle boom, front brakes, and independent suspension, with comparisons to competitor vehicles. | 12th Feb 1934 | Box 173 \ 1 img285 | |
| Vehicle body resonance, sound absorption materials, and potential experiments to reduce engine noise. | 12th Feb 1934 | Box 173 \ 1 img286 | |
| Memo discussing exhaust system designs, comparing with Cadillac and proposing new tests. | 12th Feb 1934 | Box 173 \ 1 img287 | |
| Exhaust silencer design, noise, and vibration issues. | 12th Feb 1934 | Box 173 \ 1 img288 | |
| Notes on engine downtake, silencer dimensions, Cadillac's straight-eight engine and electrical system. | 12th Feb 1934 | Box 173 \ 1 img289 | |
| Delco high-speed coils, starting motors, and dynamos. | 12th Feb 1934 | Box 173 \ 1 img290 | |
| Dynamo performance, comparison with Delco and Bentley parts, and comments on independent suspension. | 12th Feb 1934 | Box 173 \ 1 img291 | |
| Engine inertia, frame frequency, and centre point wing mounting. | 12th Feb 1934 | Box 173 \ 1 img292 | |
| Volumetric efficiency tests and issues with a two-plate clutch. | 12th Feb 1934 | Box 173 \ 1 img293 | |
| Cablegram from Detroit reporting on engine performance, rattle issues, and design comparisons. | 12th Feb 1934 | Box 173 \ 1 img294 | |
| Design sketch and notes on an independent suspension system, detailing caster loss and wheel lean. | 31th Jan 1934 | Box 173 \ 1 img295 | |
| Vehicle suspension characteristics, over-self centering effect, and comparing different suspension schemes. | 31th Jan 1934 | Box 173 \ 1 img296 | |
| Analysis of an Opel suspension arrangement and the weight disposition of Cadillac and Chrysler vehicles. | 31th Jan 1934 | Box 173 \ 1 img297 | |
| Vehicle damping, lever schemes, and independent rear suspension systems. | 31th Jan 1934 | Box 173 \ 1 img298 | |
| And a diagram discussing modifications to driving shafts and the use of torsion shafts for main springing. | 31th Jan 1934 | Box 173 \ 1 img299 | |
| Vehicle suspension, including stabilisers, coil springs, and steering geometry. | 31th Jan 1934 | Box 173 \ 1 img300 | |
| Notes on wheel straightening forces and intelligence on Cadillac's new 8-in-line engine for the LaSalle model. | 31th Jan 1934 | Box 173 \ 1 img301 | |
| Comparing torsional vibration characteristics and dampers of various engine designs. | 31th Jan 1934 | Box 173 \ 1 img302 | |
| Replacing a rubber component with Micarta to drive a flywheel, including a sketch and a request for drawings for testing. | 31th Jan 1934 | Box 173 \ 1 img303 | |
| Variable pitch rubber blade cooling fan, its performance benefits, and potential cost savings. | 31th Jan 1934 | Box 173 \ 1 img304 | |
| With diagrams on a governor-controlled fan and dynamo drive system. | 31th Jan 1934 | Box 173 \ 1 img305 | |
| Page featuring two large black horizontal bars and no discernible text. | 12th Feb 1934 | Box 173 \ 1 img306 | |
| Independent suspension design, explaining the loss of caster by inclining the wishbones. | 12th Feb 1934 | Box 173 \ 1 img307 | |
| Technical memorandum discussing wheel self-centering effects and comparing suspension schemes, with an accompanying diagram. | 12th Feb 1934 | Box 173 \ 1 img308 | |
| Analysis of vehicle suspension arrangements, weight disposition, and damping characteristics. | 12th Feb 1934 | Box 173 \ 1 img309 | |
| The experimental use of torsion shafts in a suspension system, including a blueprint diagram and material specifications. | 12th Feb 1934 | Box 173 \ 1 img310 | |
| Wheel self-centering and an analysis of 8-in-line engines with comparisons to Cadillac designs. | 12th Feb 1934 | Box 173 \ 1 img311 | |
| With a blueprint diagram of a damper flywheel driven by a Micarta tube, and a discussion on cooling fans. | 12th Feb 1934 | Box 173 \ 1 img312 | |
| Technical memorandum discussing a governor-controlled fanspeed mechanism with a blueprint diagram. | 12th Feb 1934 | Box 173 \ 1 img313 | |
| Analysis of the Lincoln Car's engine, detailing the change from a seven-bearing to a four-bearing crankshaft. | 1st Feb 1934 | Box 173 \ 1 img314 | |
| Car components including pistons, clutch, bearings, electrical systems, and brakes. | 23th Jan 1934 | Box 173 \ 1 img315 | |
| Competitor cars like Packard and Cadillac, focusing on their engine and independent suspension technology. | 23th Jan 1934 | Box 173 \ 1 img316 | |
| The power unit of a Lincoln car, detailing crankshaft and engine specifications. | 12th Feb 1934 | Box 173 \ 1 img317 | |
| Comparison of engine designs, piston treatments, and single-plate clutch specifications. | 12th Feb 1934 | Box 173 \ 1 img318 | |
| Specification sheet detailing various automotive components including clutch, bearings, electrical, and engine parts. | 18th Feb 1934 | Box 173 \ 1 img319 | |
| Competitor vehicles from Cadillac, Chrysler and Bentley, focusing on engines and suspension suitability for the UK market. | 12th Feb 1934 | Box 173 \ 1 img320 | |
| Telegram from Hives recommending specifications for straight-eight engine rods, referencing the latest Lasalle engine. | 14th Feb 1934 | Box 173 \ 1 img321 | |
| Telegram received by telephone concerning engine manifold layout and a competitor's engine smoothness. | 10th Mar 1932 | Box 173 \ 1 img322 | |
| Telegram message concerning vehicle performance issues like cylinder smoothness and brake lag. | 10th May 1930 | Box 173 \ 1 img323 | |
| Telegram received by telephone from Robotham with the message 'March before sailing'. | 10th Sep 1933 | Box 173 \ 1 img324 | |
| Cablegram comparing American competitor engine designs and recommending the purchase of a Cadillac Sixteen for analysis. | 14th Feb 1934 | Box 173 \ 1 img325 | |
| Cablegram reporting on an investigation into six-cylinder engine smoothness and brake noise. | 14th Feb 1934 | Box 173 \ 1 img326 | |
| Distributing a cable from the USA with engine design recommendations and competitor analysis. | 15th Feb 1934 | Box 173 \ 1 img327 | |
| Night letter cable to Detroit, U.S.A. regarding a comparison between a Bentley and a Terraplane. | 15th Feb 1934 | Box 173 \ 1 img328 | |
| Continuation of a communication discussing the export of cars, pricing, and duties. | 15th Feb 1934 | Box 173 \ 1 img329 | |
| Night letter cable to Coverley in Indianapolis regarding bearing difficulties and further rig tests. | 15th Feb 1934 | Box 173 \ 1 img330 | |
| Bearing production methods and supplier visits to Allison and Bohn Aluminum in Detroit. | 26th Jan 1934 | Box 173 \ 1 img331 | |
| Discussions on engine development, including bearing issues, crankshaft hardness, test conditions, and valve materials. | 26th Jan 1934 | Box 173 \ 1 img332 | |
| Engine development regarding combustion chamber design, valve materials, and methods to reduce lead attack. | 9th Feb 1934 | Box 173 \ 1 img333 | |
| Memo discussing impressions of the Chrysler Airflow suspension and ride comfort. | 9th Feb 1934 | Box 173 \ 1 img334 | |
| Various independent suspension schemes from General Motors, Mercedes, and Chrysler. | 9th Feb 1934 | Box 173 \ 1 img335 | |
| Memo comparing suspension and gearbox designs of competitor vehicles. | 9th Feb 1934 | Box 173 \ 1 img336 | |
| Memo discussing gearbox design, tooth proportions, and competitor transmission analysis. | 9th Feb 1934 | Box 173 \ 1 img337 | |
| Automatic transmissions, including a Maybach clutch system and future developments by Chrysler. | 9th Feb 1934 | Box 173 \ 1 img338 | |
| Steering shocks, referencing experiments on wheel wobble, gyroscopic torque, and experiences with wishbone suspension cars. | 9th Feb 1934 | Box 173 \ 1 img339 | |
| Comparison of American car engine weights with notes on contemporary automotive technology. | 9th Feb 1934 | Box 173 \ 1 img340 | |
| Suspension and handling adjustments, including specifications for a test car. | 19th Feb 1934 | Box 173 \ 1 img341 | |
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