| Description | Date | Identifier | |
| Outlining a list of urgent design work and improvements for various car components. | 20th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan128 | |
| And comparing various instrument board layouts for the 25EX model. | 21th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan129 | |
| The position of various modification schemes for a Left Hand Phantom II chassis. | 22th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan130 | |
| Standardisation of bonnet locks on the chassis. | 22th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan131 | |
| Modifications to improve the lubrication of an axle control ball end. | 22th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan132 | |
| Poor road holding on a 25HP car, suggesting a modification to the damper load. | 23th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan133 | |
| Decision to develop an in-house dimming switch rather than one from Lucas'. | 23th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan134 | |
| Modifications for the L.H. P. 2. Auto-Klean strainer. | 24th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan135 | |
| Modifications to a double-acting thermostat for radiator shutters. | 24th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan136 | |
| Responding to various numbered technical queries regarding a vehicle referred to as 'Camacha'. | 24th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan137 | |
| Clearance issue with the crankcase breather pipe and extra oil cock control rod on an L.H. P.2. chassis. | 24th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan138 | |
| Relocating the petrol filter and the associated concerns regarding potential air locks. | 24th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan139 | |
| Recommendations for coachbuilders regarding subframes, scuttle isolation, and aprons for the 20/25HP model. | 24th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan140 | |
| Various gearbox design problems and proposed solutions. | 26th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan141 | |
| Typed memo discussing gearbox design features and a comparison with the Wilson gear for a 45HP engine. | 26th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan142 | |
| Modifications to the Phantom II L.H. Chassis, concerning the oil filter, petrol filter, and thermostatically controlled shutters. | 26th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan143 | |
| Original drawing L.C. 2800 for the Auto-Klean strainer, with full details of the freewheel ratchet device. | 26th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan144 | |
| Schemes for central lubrication pipe coil connections for the front and rear axles. | 28th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan145 | |
| Proposing alterations to the L.H. P.2 gearbox central levers to increase load and prevent sideways deflection. | 28th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan146 | |
| Drawing for the addition of ignition type tungsten contacts to the backing light switch. | 29th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan147 | |
| Driver seating positions and adjustments for various car types. | 29th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan148 | |
| New cantilever battery support for the Phantom II model. | 29th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan149 | |
| Proposal for covering the exposed lubricated surface of the change speed ball for a left-hand chassis change gear. | 29th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan150 | |
| Proposing two schemes to resolve difficulty reaching the dashboard pump pedal on the left-hand chassis. | 30th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan151 | |
| With sketches discussing an anti-squeaking device for road wheel brakes. | 30th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan152 | |
| Search for new cam forms to experiment with timing on a compression ignition engine. | 31th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan153 | |
| Oil draining from the carburetter and power loss issues related to a new silencer design on the 23-EX. | 31th May 1930 | West Wittering \ U \ 2January1930-September1930 Scan154 | |
| Outlining a scheme to correct a lagging carbon contact issue in the P. 2. starter main switch. | 2nd Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan155 | |
| Three ways a car can oscillate and potential solutions to improve car riding comfort. | 2nd Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan156 | |
| Petrol reserve system, the Autovac tank, and a future move to a petrol pump. | 2nd Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan157 | |
| Carburetter silencer design disagreement, troubleshooting, and a modification to address power loss. | 2nd Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan158 | |
| Modifications to the carburettor silencer to reduce high-speed power loss. | 4th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan159 | |
| Design scheme for left-hand chassis floorboards and the placement of a Bosch switch. | 4th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan160 | |
| Modifications and alternative designs for the starting handle. | 6th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan161 | |
| Adapting a backing light switch for use as a stop light switch on a L.H. P.2 chassis. | 6th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan162 | |
| Chassis battery support modification with a universal subframe, particularly for the 18-EX body type. | 6th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan163 | |
| Suitability of different bumper types and potential design faults. | 6th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan164 | |
| Bumper design using 'U' springs and semi-elliptic springs, accompanied by a sketch. | 14th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan165 | |
| Modifications to the P.2 Starter Main Switch to address carbon lagging and contact burning issues. | 14th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan166 | |
| Five changes to 'F' type pedals for the continental car 26-EX. | 14th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan167 | |
| Following up on an idea for shock dampers using air vessels and urging the patenting process. | 14th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan168 | |
| Requesting a drawing of the L.H. SS. Instrument Board for the 2nd vehicle, noting the body is already a month overdue. | 14th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan169 | |
| Requesting information on the smallest available sylphon tubing for a new mechanically operated petrol pump design. | 14th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan170 | |
| Requesting feedback on the experimental P. 2 car subframes regarding body rattles and coachbuilding time. | 16th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan171 | |
| Suggestions for improving the design and functionality of a petrol gauge. | 16th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan172 | |
| Series of numbered suggestions for modifying a fuel tank system, including vents, fillers, pumps, and gauges. | 17th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan173 | |
| Hand-drawn schematic of a fluid tank and associated pipework including ball valves. | 17th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan174 | |
| Hand-drawn sketch of a fuel tank and a separate pipe assembly with valves and annotations. | 17th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan175 | |
| Modification and trial of adjustable pedals for the R.H. P. 2 and 26-EX models. | 17th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan176 | |
| Modified hand brake lever design to increase clearance and its application to other models. | 17th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan177 | |
| Cracked glass on the framed instrument patch and proposing a revised design. | 18th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan178 | |
| Modifications and improvements to the floorboards for the Phantom II and 25HP models. | 19th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan179 | |
| Recommendations for an improved system of scuttle isolation and coordination with coachbuilders. | 19th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan180 | |
| Chassis delivery for 26-EX, concerns over a 'flashy' chromium finish, and a request for trunk fittings. | 19th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan181 | |
| Modifications to the subframe of car 25.EX, along with instructions for floorboards, bonnet painting, and accessory fitting. | 25th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan182 | |
| The performance and issues of the Propaganda Car (12.XJ) after a 10,000-mile tour. | 25th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan183 | |
| Issues with the rear wheel carrier, triangular stay bearings, petrol tank, rear springs, and undersheets, including suggestions for modifications. | 25th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan184 | |
| Issues with body rattles, subframe performance, and specific component failures from coachbuilders. | 25th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan185 | |
| Modifying the design of headlamp brackets and wing stays for the 20/25HP model. | 26th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan186 | |
| Tests of completed cars detailing issues and proposed solutions for various components. | 26th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan187 | |
| List of suggested improvements for vehicle components including wiring, bonnet, and pedal stems. | 27th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan188 | |
| List of requested changes for a petrol gauge and associated petrol tank. | 27th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan189 | |
| Schemes for a concealed bonnet hinge for the P.2 and 20HP/25HP models. | 28th Jun 1930 | West Wittering \ U \ 2January1930-September1930 Scan190 | |
| Request for a patent search regarding the use of induction pipe vacuum for operating the accelerating petrol pump in Stromberg carburetters. | 1st Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan191 | |
| Design of a petrol gauge, instrument board accessibility, and a fix for a speedometer noise. | 1st Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan192 | |
| Phantom cooling tests, comparing radiator design with competitors, and considering petrol supply and gearing. | 1st Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan193 | |
| Comparing the Cadillac 16-cylinder engine to Rolls-Royce's proposed 12-cylinder designs and discussing development. | 2nd Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan194 | |
| Comparison of American and English car springing, advocating for ample damping for safety on varied road conditions. | 2nd Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan195 | |
| Stop light switch, referencing telegrams and alternative design schemes. | 3rd Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan196 | |
| Design of a conical distance piece for the side spare wheel carrier. | 4th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan197 | |
| Instrument board design for a left-hand drive chassis to meet USA requirements. | 4th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan198 | |
| Modifications for increased cooling on the 25HP and 45HP models. | 4th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan199 | |
| Design modifications for a 20/25HP gearbox support tube. | 5th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan200 | |
| Modifications to thermostatically operated shutters for the 25HP model. | 5th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan201 | |
| Expected arrival of a second L.H. P.2. chassis. | 9th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan202 | |
| Query regarding previous patent specifications for self-adjusting tappets for a trial on the Phantom II. | 9th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan203 | |
| Design, modifications, and installation of a petrol pump. | 7th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan204 | |
| Visit to deliver a 25HP chassis and providing an update on the design progress for a Phantom II induction system and a new petrol pump. | 9th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan205 | |
| Alarmingly high petrol consumption, proposing bench and road tests for different carburetters and analysis of air valve behaviour. | 10th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan206 | |
| Friction clutch issues in 45HP & 25HP cars, focusing on gear change difficulty and a proposed material change for the American market. | 10th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan207 | |
| Proposed locomotive-style brake shoe design to address front brake squeaks. | 10th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan208 | |
| Elusive oil leak at the rear end of a P.2. crankshaft and proposing diagnostic tests and modifications. | 12th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan209 | |
| Agreements and proposed changes to the extra wiring for headlamps, side lamps, and centre lamps. | 12th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan210 | |
| Modifications to the rear end of a P.2 vehicle, including the petrol tank and luggage grid. | 12th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan211 | |
| Optimal size for radiator tubes and their effect on engine cooling and performance. | 14th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan212 | |
| Design and policy for fitting front aprons as a standard part of the chassis. | 14th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan213 | |
| Increase in the number of bolts on the front exhaust expansion box flange from 4 to 8. | 16th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan214 | |
| Technical memo discussing chassis and coachwork issues regarding rear wheel arch dimensions and scuttle isolation. | 15th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan215 | |
| List of technical points and issues regarding vehicle body and subframe construction. | 15th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan216 | |
| Design issues and proposed modifications for louvered bonnets, castight levers, and floorboards. | 1st Jan 1930 | West Wittering \ U \ 2January1930-September1930 Scan217 | |
| The application of automatically adjusting valve tappets to the P. 2. engine. | 1st Jan 1930 | West Wittering \ U \ 2January1930-September1930 Scan218 | |
| Proposed modifications to steering wheel controls, including flattening and switch placement. | 19th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan219 | |
| Test report on a 25HP car fitted with a Double Zenith Carburetter. | 19th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan220 | |
| Design review of a car, praising its shape and modifications but noting a safety issue with the doors. | 19th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan221 | |
| The design and standardisation of the bonnet, instrument board, and front apron for a new L.H. P. 2 model for America. | 21th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan222 | |
| Proposed increase in wheel track to fix radiator issues and questioning its progress and implications for steering and wheel arch clearances. | 22th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan223 | |
| Arguing against the use of wooden subframes in favour of steel for cars intended for the American market. | 22th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan224 | |
| Failure of P.2 subframe rear support brackets and requesting an investigation. | 22th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan225 | |
| Request for a layout regarding an issue with axle buffers fouling under conditions of extreme roll. | 22th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan226 | |
| Electric clocks, their origin, and issues with framed instrument patches. | 22th Jul 1930 | West Wittering \ U \ 2January1930-September1930 Scan227 | |
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