| Description | Date | Identifier | |
| Confirming Mr. Royce has agreed for Sales to use his car 18-EX for a trial. | 14th Sep 1929 | Box 19 \ 5 Scan015 | |
| Arranging for the experimental car 18-EX to be delivered to Mr. Cowan at Conduit Street for trial purposes. | 17th Sep 1929 | Box 19 \ 5 Scan016 | |
| Proposal for incorporating ten improved parts into the Phantom II production and for testing them. | 15th Oct 1929 | Box 19 \ 5 Scan017 | |
| Page discussing potential modifications to radiators, lubrication systems, bodywork, and shock absorbers. | 15th Oct 1929 | Box 19 \ 5 Scan018 | |
| Page from a report discussing noise, load, and wear on shock absorbers. | 29th Oct 1929 | Box 19 \ 5 Scan019 | |
| List of modifications and new parts to be fitted to the 18-EX car for Le Canadel. | 29th Oct 1929 | Box 19 \ 5 Scan020 | |
| Confirming the return of item '18.EX.' on Monday, November 11th. | 30th Oct 1929 | Box 19 \ 5 Scan021 | |
| Missing switch keys for the 18-EX car brought from West Wittering. | 20th Nov 1929 | Box 19 \ 5 Scan022 | |
| The calibration of an A.T. Speedometer for Chassis 18-EX due to non-standard tyre size. | 6th Dec 1929 | Box 19 \ 5 Scan023 | |
| Arranging a meeting to test drive the 20-EX car and compare its quietness against the Phantom II Trials Cars. | 7th Dec 1929 | Box 19 \ 5 Scan024 | |
| Confirming customs papers and handover arrangements for Chassis 18-EX. | 9th Dec 1929 | Box 19 \ 5 Scan025 | |
| Requesting feedback on engine knocking and valve noise for vehicle 18-EX, and advising new valve springs are being sent. | 23th Dec 1929 | Box 19 \ 5 Scan026 | |
| From Dodd regarding the performance of car 18EX and a future report on 18ER. | 21th Sep 1929 | Box 19 \ 5 Scan027 | |
| Performance report of the 18EX car following a journey to Le Canadel, France. | 29th Dec 1929 | Box 19 \ 5 Scan028 | |
| Brake performance, steering characteristics, and average petrol consumption. | 13th Jan 1930 | Box 19 \ 5 Scan029 | |
| Fitting new valve springs which failed to resolve a 'clatter' noise at 50mph. | 13th Jan 1930 | Box 19 \ 5 Scan030 | |
| Visit to the Works to discuss a gearbox problem (silence and easy change) at Le Canadel. | 9th Jan 1930 | Box 19 \ 5 Scan031 | |
| Telegram from Royce to Hardy postponing a visit due to illness. | 13th Jan 1930 | Box 19 \ 5 Scan032 | |
| Copy of a telegram postponing a visit to Le Canadel on behalf of Royce. | 14th Jan 1930 | Box 19 \ 5 Scan033 | |
| The starter motor failing to engage when the car is on a steep downward gradient. | 27th Jan 1930 | Box 19 \ 5 Scan034 | |
| Instructions for removing a leather wiper from the pinion unit of a starter motor on car 18-EX. | 1st Feb 1930 | Box 19 \ 5 Scan035 | |
| Memo from Dodd to Mr Hives on vehicle status, addressing piston knocks, shock dampers and valve springs. | 22th Feb 1930 | Box 19 \ 5 Scan036 | |
| The performance of car 18 EX during road testing in France. | 22th Feb 1930 | Box 19 \ 5 Scan037 | |
| Letter to F. Dodd regarding radiator mascot oscillation ('jellying') and brake squeaks on car 18-EX. | 27th Feb 1930 | Box 19 \ 5 Scan038 | |
| Road testing issues including radiator jellying, brake squeaks, and reduced brake efficiency. | 9th Mar 1930 | Box 19 \ 5 Scan039 | |
| Letter to a customer addressing brake squeaks, radiator 'jellying', and inquiring about fuel consumption. | 12th Mar 1930 | Box 19 \ 5 Scan040 | |
| Radiator jellying, vehicle performance, and consumption figures. | 22th Mar 1930 | Box 19 \ 5 Scan041 | |
| Letter discussing a cure for radiator 'jellying' by mounting it on three points. | 27th Mar 1930 | Box 19 \ 5 Scan042 | |
| Typed memo to F. Dodd in France regarding the return of 'R.' and the preparation of his car. | 28th Mar 1930 | Box 19 \ 5 Scan043 | |
| Letter from 'R.' at Le Canadel discussing his health, new design work, and specific projects like compression ignition units, aero engine gears, and the 20HP model. | 1st Apr 1930 | Box 19 \ 5 Scan044 | |
| Personal letter discussing health, car maintenance, and opinions on other vehicle makes. | 2nd Apr 1930 | Box 19 \ 5 Scan045 | |
| Letter discussing future engine designs, cost reduction strategies, and potential new markets. | 2nd Apr 1930 | Box 19 \ 5 Scan046 | |
| Letter by F.H. Royce discussing technical points on frame stiffness, suspension, brakes, valve springs, and carburetors. | 3rd Apr 1930 | Box 19 \ 5 Scan047 | |
| Letter from Dodd in France regarding the health of 'R', car mileage, and repairs to a windscreen and mudguard. | 3rd Apr 1930 | Box 19 \ 5 Scan048 | |
| Vehicle development progress, gear technology, model improvements, and engine units. | 9th Apr 1930 | Box 19 \ 5 Scan049 | |
| Sg. to Hs. regarding views on specific points in preparation for a meeting. | 9th Apr 1930 | Box 19 \ 5 Scan050 | |
| Letter to Mr. Royce regarding his health, a trip to France, and an update on the Phantom II model. | 11th Apr 1930 | Box 19 \ 5 Scan051 | |
| Tests conducted to resolve radiator movement issues by modifying the frame and mounting. | 11th Apr 1930 | Box 19 \ 5 Scan052 | |
| Engine performance, carburetter upgrades, radiator corrosion, and new features for a 10,000-mile test car. | 11th Apr 1930 | Box 19 \ 5 Scan053 | |
| Report discussing progress on the 20 HP car, detailing performance modifications and comparing it to other models. | 11th Apr 1930 | Box 19 \ 5 Scan054 | |
| The performance and issues of the 20 HP model, discussing the clutch, starter, axle, and engine mounting. | 11th Apr 1930 | Box 19 \ 5 Scan055 | |
| Report comparing Firth's Crown Austenitic steel and Silchrome for exhaust valves, and commenting on an Armstrong Siddeley gearbox. | 11th Apr 1930 | Box 19 \ 5 Scan056 | |
| Various gearbox technologies, including those from competitors, and considerations for future development. | 11th Apr 1930 | Box 19 \ 5 Scan057 | |
| Gearbox performance, a new chassis, dynamo output, and aero engine oil testing issues. | 11th Apr 1930 | Box 19 \ 5 Scan058 | |
| Engine lubrication issues, performance modifications for the 'R' and S.6 engines, and carburettor testing. | 11th Apr 1930 | Box 19 \ 5 Scan059 | |
| Supercharged engine development, detailing issues with cylinders, successes with reduction gears, and progress on a Compression Ignition unit. | 11th Apr 1930 | Box 19 \ 5 Scan060 | |
| On hotel letterhead from Turin regarding a car's performance, noting radiator overheating and a high-speed wobble after a drive from Nice. | 11th Apr 1930 | Box 19 \ 5 Scan061 | |
| Memo detailing vehicle performance issues such as vibration and brake squeak, and plans for future visits. | 29th Apr 1930 | Box 19 \ 5 Scan062 | |
| Letter on hotel letterhead discussing travel plans, personnel, and vehicle modifications. | 29th Apr 1930 | Box 19 \ 5 Scan063 | |
| Car 24EX, detailing issues with brake linings, thermostat, clutch, and engine power, with suggestions for testing. | 29th Apr 1930 | Box 19 \ 5 Scan064 | |
| Proposed production standardisations and an update on oil consumption for car 18 EX. | 2nd May 1930 | Box 19 \ 5 Scan065 | |
| Front shock absorbers and comparative performance tests between car models 18EX and 24EX. | 2nd May 1930 | Box 19 \ 5 Scan066 | |
| Travel arrangements to Paris and Germany, including visits to the Bosch and Maybach factories. | 2nd May 1930 | Box 19 \ 5 Scan067 | |
| Cover letter accompanying a list of various aero engine test reports. | 2nd May 1930 | Box 19 \ 5 Scan068 | |
| List of Aero and Chassis reports, with a memo regarding a boost control scheme. | 1st May 1930 | Box 19 \ 5 Scan069 | |
| To Mr. Hives regarding R's travel arrangements from France to Derby. | 6th May 1930 | Box 19 \ 5 Scan070 | |
| Letter regarding travel plans, photos, and an opinion on the development of the 25HP model chassis. | 9th May 1930 | Box 19 \ 5 Scan071 | |
| Letter discussing improvements to a car model, including engine features, carburetion and gearbox. | 14th May 1930 | Box 19 \ 5 Scan072 | |
| Visit to 'R.' at Le Canadel to discuss the design of the 25 HP car. | 14th May 1930 | Box 19 \ 5 Scan073 | |
| Changes to the 'Japan' type engine, a new 25 HP experimental chassis (18-G4), and modifications to the Phantom II. | 14th May 1930 | Box 19 \ 5 Scan074 | |
| Modifications for the Phantom II, including criticisms of the left-hand drive chassis and the bumpers. | 14th May 1930 | Box 19 \ 5 Scan075 | |
| The development of various aero engine types, including private venture and compression ignition engines. | 14th May 1930 | Box 19 \ 5 Scan076 | |
| Compression ignition unit dimensions, a 1000 HP engine for the Air Ministry, and a two-charge battery scheme. | 26th Sep 1930 | Box 19 \ 5 Scan077 | |
| Specification and planning memo for a new car for 'R.', detailing 26 chassis modifications. | 26th Sep 1930 | Box 19 \ 5 Scan078 | |
| Continuation page listing component modifications, including jets, switches, and springs. | 26th Sep 1930 | Box 19 \ 5 Scan079 | |
| Proposal from 'R' to arrange a car for use in France for trials, exhibition, and personal criticism. | 26th Sep 1930 | Box 19 \ 5 Scan080 | |
| Use of a specific car in France for demonstration purposes. | 29th Sep 1930 | Box 19 \ 5 Scan081 | |
| Letter discussing arrangements for a car in France for transport and marketing purposes. | 1st Oct 1930 | Box 19 \ 5 Scan082 | |
| Subframe for car 27-EX being sent to Messrs. Park Wards and the status of the chassis specification. | 11th Oct 1930 | Box 19 \ 5 Scan083 | |
| Typed memo discussing the specifications and delivery schedule for 'Car for R.'. | 29th Oct 1930 | Box 19 \ 5 Scan084 | |
| List of required accessories for car 27-EX. | 30th Oct 1930 | Box 19 \ 5 Scan085 | |
| Specification details for chassis 27-EX, a 40/50 HP new car, referencing the N.2 series. | 30th Oct 1930 | Box 19 \ 5 Scan086 | |
| List of technical updates and instructions for various vehicle components. | 30th Oct 1930 | Box 19 \ 5 Scan087 | |
| Status report detailing outstanding design and fitting items for a vehicle. | 30th Oct 1930 | Box 19 \ 5 Scan088 | |
| Sourcing and finish options for lamps for new car 27-EX. | 31th Oct 1930 | Box 19 \ 5 Scan089 | |
| Stock shortage for car 27-EX and a request to obtain the full equipment. | 1st Nov 1930 | Box 19 \ 5 Scan090 | |
| Letter to Park Ward & Co. Ltd. detailing the final finish and interior specifications for Sir Henry Royce's car, chassis 27EX. | 5th Nov 1930 | Box 19 \ 5 Scan091 | |
| Interior specifications and design sketches for a car body. | 5th Nov 1930 | Box 19 \ 5 Scan092 | |
| Urgent internal request for wing stays and lock reference numbers for car 27-EX, for coachbuilder Park Ward. | 5th Nov 1930 | Box 19 \ 5 Scan093 | |
| 'N.2' series specification updates and exceptions for the 40/50 HP Chassis, 27-EX. | 5th Nov 1930 | Box 19 \ 5 Scan094 | |
| List of vehicle part specifications, detailing items to be fitted, not fitted, and those pending design. | 5th Nov 1930 | Box 19 \ 5 Scan095 | |
| Specifications for the bonnet and tyres, along with a list of drawings provided to the coachbuilders. | 5th Nov 1930 | Box 19 \ 5 Scan096 | |
| Required weight for front road springs and providing suitable alternatives if out of stock. | 6th Nov 1930 | Box 19 \ 5 Scan097 | |
| Logistics for mounting a body on chassis 27-EX for Sir Henry Royce by Park Ward. | 6th Nov 1930 | Box 19 \ 5 Scan098 | |
| Correcting the finish specification for bright parts on chassis 27-EX. | 7th Nov 1930 | Box 19 \ 5 Scan099 | |
| Confirming the despatch of wing stays and providing reference numbers for bonnet and switch box keys for car 27-EX. | 7th Nov 1930 | Box 19 \ 5 Scan100 | |
| To Sir Henry Royce regarding modifications and unavailable parts for chassis 27-EX. | 7th Nov 1930 | Box 19 \ 5 Scan101 | |
| Specifications and timelines for a new car chassis for a client 'R'. | 7th Nov 1930 | Box 19 \ 5 Scan102 | |
| Letter to Park Ward & Co. Ltd. detailing a list of accessories to be sent from the Lillie Hall Depot for chassis 27-EX. | 7th Nov 1930 | Box 19 \ 5 Scan103 | |
| Requesting permission to send chassis 27-EX to coachbuilder Park Ward for body mounting and discussing logistics. | 10th Nov 1930 | Box 19 \ 5 Scan104 | |
| Sending a chassis to Park Ward, the fitting of a dual carburetter, and the design of a new petrol tank. | 10th Nov 1930 | Box 19 \ 5 Scan105 | |
| Request for the rear brakes to be lined with AMR.2 material from the stores. | 12th Nov 1930 | Box 19 \ 5 Scan106 | |
| Chassis 27-EX being sent to coachbuilder Park Ward, with instructions to keep the new radiator covered. | 12th Nov 1930 | Box 19 \ 5 Scan107 | |
| Scheduling concerns for testing car 27-EX, including potential delays with the twin carburetter and a centrally vented tank. | 13th Nov 1930 | Box 19 \ 5 Scan108 | |
| Internal order for a pair of stiffer 1200 lbs rear springs for chassis 27-EX, as the body is expected to be lighter than 26-EX. | 13th Nov 1930 | Box 19 \ 5 Scan109 | |
| Note stating that a specific car will not be fitted with a cantilever battery support. | 14th Nov 1930 | Box 19 \ 5 Scan110 | |
| Letter to coachbuilder Park Ward & Co. Ltd. detailing experimental features and instructions for a chassis. | 14th Nov 1930 | Box 19 \ 5 Scan111 | |
| The loan of a chassis to Park Ward, detailing special features and concerns about secrecy. | 14th Nov 1930 | Box 19 \ 5 Scan112 | |
| Work program and delayed features for car 27-EX, destined for the South of France. | 17th Nov 1930 | Box 19 \ 5 Scan113 | |
| Arranging the collection of car 18-EX for chassis or body renovation. | 19th Nov 1930 | Box 19 \ 5 Scan114 | |
| | | | |
