| Description | Date | Identifier | |
| Timing of a conference for the 'SS' model production. | 31th Jan 1929 | Box 19 \ 3 Scan022 | |
| 'SS' valve gear and left-handed engines, discussing an offset tappet design. | 1st Feb 1929 | Box 19 \ 3 Scan023 | |
| Continued discussion on tappet mechanism design, including the use of a taper pin and immersing the camshaft in oil. | 9th Feb 1929 | Box 19 \ 3 Scan024 | |
| Secret memo outlining proposals and schemes for lefthand SS engines. | 9th Feb 1929 | Box 19 \ 3 Scan025 | |
| Comparative analysis of four engine design schemes, detailing their advantages and objections. | 9th Feb 1929 | Box 19 \ 3 Scan026 | |
| Comparative table of engine design schemes for camshafts and tappets, outlining the advantages and objections of each. | 9th Feb 1929 | Box 19 \ 3 Scan027 | |
| Review of engineering schemes with remarks from 'R' concerning pushrod design and lubrication. | 11th Feb 1929 | Box 19 \ 3 Scan028 | |
| Change in wheelbase to 144 inches for two chassis, differing from the standard long-type English chassis. | 11th Feb 1929 | Box 19 \ 3 Scan029 | |
| Seven possible design schemes for the 'SS' left-hand engine, weighing the pros and cons of component changes. | 15th Feb 1929 | Box 19 \ 3 Scan030 | |
| Various engine design schemes, their pros and cons, and future development strategy. | 15th Feb 1929 | Box 19 \ 3 Scan031 | |
| Continued internal memo discussing drive scheme preferences, referencing 'Silver Ghost'. | 15th Feb 1929 | Box 19 \ 3 Scan032 | |
| Internal memorandum discussing an order of 200 left-hand drive chassis for the American market, including wheelbase specifications. | 15th Feb 1929 | Box 19 \ 3 Scan033 | |
| Standardization of the American left-handed chassis wheelbase to 150 inches. | 15th Feb 1929 | Box 19 \ 3 Scan034 | |
| Preference for Scheme 6 over Scheme 1 for left-hand engines. | 16th Feb 1929 | Box 19 \ 3 Scan035 | |
| Contractual obligations regarding the supply of 'SS' Chassis drawings to an American company for local manufacture. | 22th Sep 1924 | Box 19 \ 3 Scan036 | |
| To halt work on experimental left-handed chassis and to calculate committed costs for a potential claim. | 22th Apr 1929 | Box 19 \ 3 Scan037 | |
| Constructing three subframes for experimental left-hand drive American 'S.S.' chassis. | 18th Feb 1929 | Box 19 \ 3 Scan038 | |
| Proposals and clearances for a left-hand SS. valve tappet mechanism for an American engine. | 18th Feb 1929 | Box 19 \ 3 Scan039 | |
| Change in an order from America, switching from a special short wheelbase to a standard long wheelbase. | 18th Feb 1929 | Box 19 \ 3 Scan040 | |
| Acquisition and production schedule for J.2 Series Chassis frames. | 20th Feb 1929 | Box 19 \ 3 Scan041 | |
| Arrangement for the left-hand SS hand brake compensator and differential. | 2nd Feb 1929 | Box 19 \ 3 Scan042 | |
| Design conflict where a sub-frame cross member fouls the gearbox lever tower on experimental left-hand drive chassis for American 'S.S.' models. | 22th Feb 1929 | Box 19 \ 3 Scan043 | |
| Design and alignment of engine tappets and push rods for the L.H. SS engine. | 22th Feb 1929 | Box 19 \ 3 Scan044 | |
| Process for handling proposed engineering changes and troubles from the American division. | 22th Feb 1929 | Box 19 \ 3 Scan045 | |
| Modifications to the front brake direct leverage system to improve the cam angle. | 23th Feb 1929 | Box 19 \ 3 Scan046 | |
| Strategy for producing left-hand drive 'SS' cars for the American market and coordinating with the Springfield factory. | 1st Feb 1929 | Box 19 \ 3 Scan047 | |
| The causes for alterations to chassis number 2501, specifically concerning the frame. | 25th Feb 1929 | Box 19 \ 3 Scan048 | |
| Details on improved body mounting, brackets, frame modifications, fuel strainers, and a trunk rack. | 25th Feb 1929 | Box 19 \ 3 Scan049 | |
| Design considerations for trunk racks, bumpers, splashers, and the frame. | 25th Feb 1929 | Box 19 \ 3 Scan050 | |
| Non-adoption of the English wide dash and the cast dashboard, detailing a new arrangement with insulation. | 26th Feb 1929 | Box 19 \ 3 Scan051 | |
| Secret internal memo regarding American Designs, requesting comments on attached correspondence. | 26th Feb 1929 | Box 19 \ 3 Scan052 | |
| Prospect of an American company buying chassis and the supply of related drawings. | 14th Feb 1929 | Box 19 \ 3 Scan053 | |
| Letter from New York to London confirming an order for at least 200 units with a list of deductions. | 14th Feb 1929 | Box 19 \ 3 Scan054 | |
| The building of an American chassis at Derby Works, detailing items to be omitted for the US market. | 14th Feb 1929 | Box 19 \ 3 Scan055 | |
| Luggage/spare wheel carrier omissions and the standardization of chromium plating and lacquer finishes. | 14th Feb 1929 | Box 19 \ 3 Scan056 | |
| Road spring manufacturing and the logistics of chassis supply for the American market. | 7th Mar 1929 | Box 19 \ 3 Scan057 | |
| Secret memo regarding the sub-frame for the American left-handed 'SS' chassis to prevent production delays. | 7th Mar 1929 | Box 19 \ 3 Scan058 | |
| Modifications to the L.H. 'SS' hand brake lever and bracket to improve rigidity and fitment with a subframe. | 2nd Mar 1929 | Box 19 \ 3 Scan059 | |
| Confirming the handover of drawing N.sch.2348 showing a modification to the L.H. 'SS' Hand Brake Operating Rod. | 1st Mar 1929 | Box 19 \ 3 Scan060 | |
| Confirming the handover of a drawing for a modified L.H. 'SS' Speedometer Drive and requesting an extra print. | 1st Mar 1929 | Box 19 \ 3 Scan061 | |
| Suggested modification for the L.H. 'SS' Hand Brake Lever, replacing a dumbbell-shaped piece with a sphere to ease assembly. | 13th Mar 1929 | Box 19 \ 3 Scan062 | |
| The L.H. 'SS' Speedometer Drive and the adaptation of the R.H. type for the L.H. chassis. | 3rd Mar 1929 | Box 19 \ 3 Scan063 | |
| Logistics of sending 'SS' Experimental Chassis to the USA for testing and demonstration. | 8th Apr 1929 | Box 19 \ 3 Scan064 | |
| Recommended procedure for sending S.S. experimental chassis to the U.S.A. for testing and modification. | 9th Apr 1929 | Box 19 \ 3 Scan065 | |
| Supply of hubs from the U.S.A. and the arrangement for experimental tests. | 20th Apr 1929 | Box 19 \ 3 Scan066 | |
| Proposed chassis and frame alterations for chassis 2501, comparing American proposals to existing models. | 20th Apr 1929 | Box 19 \ 3 Scan067 | |
| Proposal for handling the production of 'SS' chassis and drawings for the USA market. | 23th Apr 1929 | Box 19 \ 3 Scan068 | |
| Giving an opinion on the placement of various vehicle controls, specifically on the steering column. | 23th Apr 1929 | Box 19 \ 3 Scan069 | |
| Note on the cancellation of a scheme and its replacement by a hand control. | 23th Apr 1929 | Box 19 \ 3 Scan070 | |
| Preparation and dispatch of chassis drawings for the USA, and the costs of experimental chassis. | 25th Apr 1929 | Box 19 \ 3 Scan071 | |
| Production changes and a steering column mismatch for a Bailey Barker Sports Saloon body on a 24-EX chassis. | 27th Apr 1929 | Box 19 \ 3 Scan072 | |
| Re-instructing parts to make a chassis suitable for the 24-EX model. | 29th Apr 1929 | Box 19 \ 3 Scan073 | |
| Instruction to cancel all work on the Left Hand Chassis for America and to store the parts. | 3rd May 1929 | Box 19 \ 3 Scan074 | |
| The decision to stop all work on an experimental chassis for the USA. | 2nd May 1929 | Box 19 \ 3 Scan075 | |
| Car body types and design requirements for various chassis models. | 18th May 1929 | Box 19 \ 3 Scan076 | |
| Alteration report disagreeing with a proposed modification to the starting handle, citing design concerns. | 24th May 1929 | Box 19 \ 3 Scan077 | |
| Letter from Rolls-Royce of America to Rolls Royce Ltd. requesting clarification on the 5-point engine suspension design. | 12th Jun 1929 | Box 19 \ 3 Scan078 | |
| Circulating a complimentary letter regarding the improved, centralized handling of alterations. | 25th Jun 1929 | Box 19 \ 3 Scan079 | |
| Copy of a letter from Maurice Olley in America to A. F. Sidgreaves in London regarding inter-company cooperation on alterations. | 14th Jun 1929 | Box 19 \ 3 Scan080 | |
| The circumstances of supplying chassis drawings to an American company, exploiting a contract loophole and outlining precautions taken. | 28th Jun 1929 | Box 19 \ 3 Scan081 | |
| Supply of three experimental left-handed engine and gearbox units. | 28th Jun 1929 | Box 19 \ 3 Scan082 | |
| Forwarding of a letter and associated documents from Mr. Olley to Mr. Royce for consultation. | 30th Jul 1929 | Box 19 \ 3 Scan083 | |
| Letter comparing the performance of the American and English built Phantom models, quoting an extract from a Paris Office report. | 25th Oct 1929 | Box 19 \ 3 Scan084 | |
| Comparing American and English car springing and suspension systems. | 26th Oct 1929 | Box 19 \ 3 Scan085 | |
| Report from Paris comparing the acceleration of American versus British chassis. | 26th Oct 1929 | Box 19 \ 3 Scan086 | |
| Listing proposed improvements and performance figures for the L.H. Phantom II chassis for the American market. | 11th Nov 1929 | Box 19 \ 3 Scan087 | |
| Gear ratios, wheel sizes, and coachwork for the Phantom II model, with comparisons to American standards. | 1st Nov 1929 | Box 19 \ 3 Scan088 | |
| Specification sheet for vehicle bumpers and lamps, with notes on modifications for the Phantom II model and the American market. | 12th Nov 1929 | Box 19 \ 3 Scan089 | |
| Component issues for the US market including clutch, cylinder head, finishes, and radiator shutter. | 12th Nov 1929 | Box 19 \ 3 Scan090 | |
| Considerations for battery, tools, lubrication, and luggage carrier design for the American market. | 13th Nov 1929 | Box 19 \ 3 Scan091 | |
| List of specifications for vehicle components, including exhaust, governor, accessories, and mudguards, with notes for the US market. | 13th Nov 1929 | Box 19 \ 3 Scan092 | |
| Potential improvements to fuel filling, steering, and ignition systems. | 11th Nov 1929 | Box 19 \ 3 Scan093 | |
| List of particulars to modify the L.H. Phantom II chassis for American requirements. | 13th Nov 1929 | Box 19 \ 3 Scan094 | |
| List of specifications and arrangements for various vehicle accessories and components. | 13th Nov 1929 | Box 19 \ 3 Scan095 | |
| Technical analysis of a proposal to install a Phantom II power plant and rear axle into an American chassis. | 13th Nov 1929 | Box 19 \ 3 Scan096 | |
| List of proposed design specifications and modifications for a vehicle chassis and components. | 14th Nov 1929 | Box 19 \ 3 Scan097 | |
| Technical notes on chassis design, including rear seats, suspension shackles, and electrical components. | 14th Nov 1929 | Box 19 \ 3 Scan098 | |
| Noise issue with the exhaust heated hot spot on the Phantom II. | 16th Nov 1929 | Box 19 \ 3 Scan099 | |
| Design considerations for the L.H. Phantom II chassis for the American market. | 26th Nov 1929 | Box 19 \ 3 Scan100 | |
| Design choices for cylinder heads, chrome finish, battery systems, tools, and lubrication. | 26th Nov 1929 | Box 19 \ 3 Scan101 | |
| List of potential improvements and American-style accessories for consideration on vehicles. | 26th Nov 1929 | Box 19 \ 3 Scan102 | |
| Decisions on windscreen wipers, mudguards, fuel caps, steering, and ignition systems. | 26th Nov 1929 | Box 19 \ 3 Scan103 | |
| Enclosing minutes regarding the specification for an experimental Left-Handed Phantom II chassis for America. | 29th Nov 1929 | Box 19 \ 3 Scan104 | |
| Meeting minutes regarding the supply of left-handed Phantom II chassis to the American Company. | 28th Nov 1929 | Box 19 \ 3 Scan105 | |
| Minutes of a meeting discussing modifications and improvements to car components. | 29th Nov 1929 | Box 19 \ 3 Scan106 | |
| Minutes of a meeting discussing car specifications including battery voltage, lubrication, and luggage carriers for the American market. | 1st Nov 1929 | Box 19 \ 3 Scan107 | |
| Minutes of a meeting discussing decisions on various vehicle components and accessories. | 1st Nov 1929 | Box 19 \ 3 Scan108 | |
| Minutes of a meeting discussing specifications for the American market, including mudguards, fuel caps, steering, and ignition. | 29th Nov 1929 | Box 19 \ 3 Scan109 | |
| The standardisation of an exhaust heated bend for the Phantom II model. | 16th Dec 1929 | Box 19 \ 3 Scan110 | |
| Duplicate prints for a Left-Hand Drive PII Chassis, listing part numbers for wheels, bumpers, and attachments. | 23th Dec 1929 | Box 19 \ 3 Scan111 | |
| Specifications for bumper mounting and a parts list with description for headlamp assemblies. | 23th Dec 1929 | Box 19 \ 3 Scan112 | |
| Part numbers and descriptions for side lamps, rear lamps, and the stop light switch. | 23th Dec 1929 | Box 19 \ 3 Scan113 | |
| Page detailing the components and functionality of the backing light switch, dimmer switch, and front number plate. | 23th Dec 1929 | Box 19 \ 3 Scan114 | |
| Details on number plate mountings, electrical connections, and battery box installations for various coachwork. | 23th Dec 1929 | Box 19 \ 3 Scan115 | |
| Specification sheet for a tool box, air cleaner, and two types of oil filters. | 23th Dec 1929 | Box 19 \ 3 Scan116 | |
| Notes on component fouling, and parts lists for an oil level indicator and speedometer drive. | 23th Dec 1929 | Box 19 \ 3 Scan117 | |
| Page discussing speedometer calibration, axle ratio changes, gearbox oil sealing, and various vacuum tank fittings. | 23th Dec 1929 | Box 19 \ 3 Scan118 | |
| Details on banjo fittings, gasolene filters and a Sparton horn. | 23th Dec 1929 | Box 19 \ 3 Scan119 | |
| Parts list for an American Instrument Board and a Fuseboard, with assembly notes. | 23th Dec 1929 | Box 19 \ 3 Scan120 | |
| List of fuseboard components and a description of an Underwriters' bumper test procedure and results. | 23th Dec 1929 | Box 19 \ 3 Scan121 | |
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