| Description | Date | Identifier | |
| Specifications for the trunk rack, bolt failure remediation, and the gasoline tank. | 23th Dec 1929 | Box 19 \ 3 Scan122 | |
| Design and manufacturing notes on double battery ignition, radiator, and shutter systems. | 23th Dec 1929 | Box 19 \ 3 Scan123 | |
| Modifications to the radiator matrix, bottom tank, and mascot. | 3rd Jan 1930 | Box 19 \ 3 Scan124 | |
| Notice regarding the fitting of an exhaust heated throttle to cars despatched to America. | 3rd Jan 1930 | Box 19 \ 3 Scan125 | |
| The distribution of depot sheets and spare parts recommendations for the Phantom II in America. | 3rd Jan 1930 | Box 19 \ 3 Scan126 | |
| List of recommended spare parts for the R.R.A.I. model. | 3rd Jan 1930 | Box 19 \ 3 Scan127 | |
| The fitting of exhaust heated carburetters to specific Phantom II chassis. | 3rd Jan 1930 | Box 19 \ 3 Scan128 | |
| Steering issues on a PII model, attributing the problem to the bodywork and suggesting tests on tires, shock absorbers, and alignment. | 7th Jan 1930 | Box 19 \ 3 Scan129 | |
| Modifications to spring stiffness, shock absorbers, and body mounting to improve steering performance. | 11th Jan 1930 | Box 19 \ 3 Scan130 | |
| Notes from an interview with Carl A. Neracher regarding internal gear transmissions. | 11th Jan 1930 | Box 19 \ 3 Scan131 | |
| Oil feed issues, advantages of internal-gear construction, and production challenges. | 11th Jan 1930 | Box 19 \ 3 Scan132 | |
| Gear cutting processes, gearbox construction, and gear teeth specifications for Chrysler gears. | 11th Jan 1930 | Box 19 \ 3 Scan133 | |
| Analysis of gearbox noise, bearings, and proposed design changes for clutches and roller bearings. | 11th Jan 1930 | Box 19 \ 3 Scan134 | |
| Analysis of wear and performance of transmission and bearing components. | 11th Jan 1930 | Box 19 \ 3 Scan135 | |
| Technical review of gearbox and drivetrain design considerations, including lubrication, gear selection, and new design proposals. | 11th Jan 1930 | Box 19 \ 3 Scan136 | |
| Gearbox technology, comparing dog-clutch shifts to synchromesh, discussing lubricants, and market adoption. | 11th Jan 1930 | Box 19 \ 3 Scan137 | |
| Letter discussing experimentation with a 'box' and the Salerni coupling. | 13th Jan 1930 | Box 19 \ 3 Scan138 | |
| From Maurice Olley regarding the decision to use 19 x 7 straight side tires for the L.H. PII. | 13th Jan 1930 | Box 19 \ 3 Scan139 | |
| Letter requesting an opinion on the future development of 7' drop center tires in America. | 16th Dec 1929 | Box 19 \ 3 Scan140 | |
| Letter from United States Rubber Company responding to questions about tire and rim standards. | 11th Jan 1930 | Box 19 \ 3 Scan141 | |
| Letter discussing tire and rim compatibility issues, including drop center rims and tube chafing. | 20th Jan 1930 | Box 19 \ 3 Scan142 | |
| Testing Phantom II chassis for 'booming' issues, specifically regarding left-handed versions for America without sub-frames. | 20th Jan 1930 | Box 19 \ 3 Scan143 | |
| Letter discussing automatic valve-tappet clearance adjustment, with reference to Cadillac and a specification from Royal Lee, as well as valve springs for the PI model. | 20th Jan 1930 | Box 19 \ 3 Scan144 | |
| Letter from Maurice Olley discussing the performance of new car springs on PI and PII models. | 22th Nov 1929 | Box 19 \ 3 Scan145 | |
| Letter from Cleveland Wire Spring Company regarding sample springs and their vibration test results. | 22th Nov 1929 | Box 19 \ 3 Scan146 | |
| Report from Cleveland Wire Spring Company on spring vibration characteristics and design. | 20th Jan 1930 | Box 19 \ 3 Scan147 | |
| Article from 'Automotive Industries' magazine detailing the Cadillac V-16 for 1930 and introducing a new Buick Sport Roadster. | 4th Jan 1930 | Box 19 \ 3 Scan148 | |
| Article detailing a V-type engine's cylinder block, power output, and other innovations. | 4th Jan 1930 | Box 19 \ 3 Scan149 | |
| Article from 'Automotive Industries' magazine detailing the engine and features of the new Cadillac V-16. | 4th Jan 1930 | Box 19 \ 3 Scan150 | |
| Article from 'Automotive Industries' magazine about the opening of the 1930 New York Automobile Show. | 4th Jan 1930 | Box 19 \ 3 Scan151 | |
| United States Patent document for a valve-tappet compensator. | 11th Oct 1927 | Box 19 \ 3 Scan152 | |
| Patent claim and detailed description for a self-adjusting hydraulic valve tappet. | 11th Oct 1927 | Box 19 \ 3 Scan153 | |
| United States patent document for a Valve Tappet Compensator. | 11th Oct 1927 | Box 19 \ 3 Scan154 | |
| Clarifying the formal ordering procedure between the English and American companies. | 23th Jan 1930 | Box 19 \ 3 Scan155 | |
| Requesting an update on tests for a left-handed chassis destined for the American market. | 25th Jan 1930 | Box 19 \ 3 Scan156 | |
| Technical letter discussing petrol gauges, Phantom II brakes, valve springs, and tyres. | 13th Feb 1930 | Box 19 \ 3 Scan157 | |
| Solutions for chassis torsion, axle damping, and radiator movement. | 13th Feb 1930 | Box 19 \ 3 Scan158 | |
| Suggesting a demonstration of the Phantom II sub-frame's advantages for the American market. | 26th Feb 1930 | Box 19 \ 3 Scan159 | |
| Requesting an update on the progress of tests for eliminating the sub-frame on a left-handed chassis for the USA. | 25th Feb 1930 | Box 19 \ 3 Scan160 | |
| Secret memo regarding the introduction of the Phantom II and the need to manage information to assist the American company in selling off Phantom I stock. | 27th Feb 1930 | Box 19 \ 3 Scan161 | |
| Selection of bodies for experimental left-hand chassis. | 4th Mar 1930 | Box 19 \ 3 Scan162 | |
| Private and confidential memo instructing the commencement of building two experimental left-hand drive chassis for the American market. | 4th Mar 1930 | Box 19 \ 3 Scan163 | |
| Design, supervision, and ordering of bodies for left-handed chassis. | 5th Mar 1930 | Box 19 \ 3 Scan164 | |
| Confidential memo regarding the completion status and design details of the L.H. Chassis. | 3rd Mar 1930 | Box 19 \ 3 Scan165 | |
| Contract, specifications, and delivery timeline for an experimental chassis. | 5th Mar 1930 | Box 19 \ 3 Scan166 | |
| The supply and shaping of mudguard irons. | 5th Mar 1970 | Box 19 \ 3 Scan167 | |
| Specification of the 40/50 HP Phantom II chassis with modifications agreed by the American Company. | 20th Jan 1930 | Box 19 \ 3 Scan168 | |
| List of updated components required for two left-hand chassis instead of one. | 6th Mar 1930 | Box 19 \ 3 Scan169 | |
| Potential design modifications, including the adoption of American-style components for a chassis. | 6th Mar 1930 | Box 19 \ 3 Scan170 | |
| The completion of steering designs and subframe type for the left-hand chassis. | 6th Mar 1930 | Box 19 \ 3 Scan171 | |
| Testing on coachwork sub-frames and the gap between the scuttle and dash on different chassis. | 6th Mar 1930 | Box 19 \ 3 Scan172 | |
| The construction and specifications for two experimental left-handed Phantom II chassis. | 6th Mar 1930 | Box 19 \ 3 Scan173 | |
| Dispatch of detail prints for subframes for left-handed Phantom II chassis. | 7th Mar 1930 | Box 19 \ 3 Scan174 | |
| Minutes of a conference on the re-specification of the 40/50 Phantom II chassis with modifications for the American market. | 7th Mar 1930 | Box 19 \ 3 Scan175 | |
| Specifications for chassis fittings including bumpers, headlamp brackets, finishes, radiator shutters, and lubrication modifications. | 11th Mar 1930 | Box 19 \ 3 Scan176 | |
| List of agreed modifications for a chassis, concerning the speedometer, fuel gauge, and petrol filler cap. | 7th Mar 1930 | Box 19 \ 3 Scan177 | |
| Included and proposed specifications for a Left Hand (L.H.) chassis. | 7th Mar 1930 | Box 19 \ 3 Scan178 | |
| Page discussing component availability and points for clarification regarding chassis specifications. | 7th Mar 1930 | Box 19 \ 3 Scan179 | |
| Sourcing and adapting bodies for new left-hand chassis. | 10th Mar 1930 | Box 19 \ 3 Scan180 | |
| Outcomes of a conference on fittings and components for an experimental American chassis. | 10th Mar 1930 | Box 19 \ 3 Scan181 | |
| Referral of the Patch Instrument Board and the accessibility of an oil drain plug. | 4th Mar 1930 | Box 19 \ 3 Scan182 | |
| Outlining points for discussion regarding an experimental American chassis, referencing a visiting American Phantom I. | 4th Mar 1930 | Box 19 \ 3 Scan183 | |
| Confidential memo discussing Mr. Olley's notes on chassis for America, focusing on development priorities for 200 production and two experimental models. | 10th Mar 1930 | Box 19 \ 3 Scan184 | |
| Design points for an American contract for the manufacture of R30 Chassis. | 26th Jul 1920 | Box 19 \ 3 Scan185 | |
| Listing and providing remarks on various engineering points for discussion, from chrome finishes to fuel gauges. | 27th Mar 1930 | Box 19 \ 3 Scan186 | |
| Agreed upon and previously discussed modifications for a chassis. | 27th Jan 1930 | Box 19 \ 3 Scan187 | |
| List of discussed but unagreed-upon items for the 200 chassis, with remarks on each point. | 27th Feb 1920 | Box 19 \ 3 Scan188 | |
| Listing items discussed but not agreed for incorporation into the 20G chassis. | 27th Feb 1920 | Box 19 \ 3 Scan189 | |
| Outlining discussion points and remarks on chassis features for the '200' model and future left-hand drive vehicles. | 7th Feb 1930 | Box 19 \ 3 Scan190 | |
| List of suggested items for consideration in the future development of the left-handed Phantom II model. | 22th Oct 1930 | Box 19 \ 3 Scan191 | |
| Listing suggested future developments for the left-handed Phantom II model and other items of general interest. | 7th Jan 1930 | Box 19 \ 3 Scan192 | |
| Listing items of general interest with accompanying remarks on various components and topics. | 7th Jan 1930 | Box 19 \ 3 Scan193 | |
| List of modifications and features for the second American L.H. Type chassis. | 11th Mar 1930 | Box 19 \ 3 Scan194 | |
| Fourteenth report of the design committee discussing the American Chassis and engine oil drain plug. | 11th Mar 1930 | Box 19 \ 3 Scan195 | |
| Options for sourcing a body for the first experimental Phantom II for R.R.A.I. | 12th Mar 1930 | Box 19 \ 3 Scan196 | |
| Planned adaptation of a right-hand drive body for use on a left-hand drive chassis. | 13th Mar 1930 | Box 19 \ 3 Scan197 | |
| Arrangements for spraying the bonnet of an Experimental Phantom II for R-R of America. | 13th Mar 1930 | Box 19 \ 3 Scan198 | |
| Confirmation of arrangements to order a Barker & Co. close-coupled Saloon body for the first experimental Phantom II chassis. | 14th Mar 1930 | Box 19 \ 3 Scan199 | |
| Design and timeline for a full-length, six-passenger car body. | 4th Mar 1930 | Box 19 \ 3 Scan200 | |
| Arrangement of a Barker body for an experimental Left-hand Phantom II Chassis. | 4th Mar 1930 | Box 19 \ 3 Scan201 | |
| Secret internal memo regarding the specification and build of an experimental car body and chassis. | 18th Mar 1930 | Box 19 \ 3 Scan202 | |
| Development of an experimental body for a left-hand drive chassis, including modifications to the radiator and bonnet. | 18th Mar 1930 | Box 19 \ 3 Scan203 | |
| Arrangement and modification of the backing light switch for the L.H. S.S. gearbox. | 17th Mar 1930 | Box 19 \ 3 Scan204 | |
| Modifications to the radiator and bonnet for left-hand drive chassis. | 17th Mar 1930 | Box 19 \ 3 Scan205 | |
| Statement on what should constitute two experimental left-hand chassis. | 17th Mar 1930 | Box 19 \ 3 Scan206 | |
| Outlining proposals and modifications for the 1st and 2nd experimental L.H. Phantom II chassis. | 14th Mar 1930 | Box 19 \ 3 Scan207 | |
| Technical memo outlining specifications for two different chassis builds, focusing on lamps, switches, clutch, and other components. | 14th Mar 1930 | Box 19 \ 3 Scan208 | |
| Specification sheet detailing component decisions and modifications for different chassis configurations. | 14th Mar 1930 | Box 19 \ 3 Scan209 | |
| List of proposed changes and agreements for various chassis components, including horns, mudguards, and ignition. | 14th Mar 1930 | Box 19 \ 3 Scan210 | |
| Modifications for experimental cars regarding the bonnet, dash, front apron, step irons, and rear axle. | 14th Mar 1930 | Box 19 \ 3 Scan211 | |
| Proposal for extending chassis lubrication to eliminate manual lubrication on various components for a future order. | 17th Mar 1930 | Box 19 \ 3 Scan212 | |
| Supply of wheels and tyres for two left-hand chassis, including orders from Dunlop and shipment delays from the States. | 17th Mar 1930 | Box 19 \ 3 Scan213 | |
| Progress and required work for the second chassis design and drawings. | 17th Mar 1930 | Box 19 \ 3 Scan214 | |
| Wheel and tire dimensions, performance data, and speedometer calibration. | 17th Mar 1930 | Box 19 \ 3 Scan215 | |
| Specifications for subframes, wheels, and tyres for two chassis, including orders for bumpers and lamps. | 18th Mar 1930 | Box 19 \ 3 Scan216 | |
| Body and interior specifications for a Phantom II Close Coupled Saloon for M.R.A.I. | 19th Mar 1930 | Box 19 \ 3 Scan217 | |
| Demonstration of sub-frames on left-handed chassis to American representatives. | 1st Mar 1930 | Box 19 \ 3 Scan218 | |
| The types of English oils used in different parts of an American chassis (404). | 20th Mar 1930 | Box 19 \ 3 Scan219 | |
| Query regarding body weight information to specify the springs for the second L.H. chassis. | 20th Mar 1930 | Box 19 \ 3 Scan220 | |
| Specification for a material change from Mild Steel to brake drum steel for clutch components on the Phantom II chassis. | 20th Mar 1930 | Box 19 \ 3 Scan221 | |
| | | | |
