| Description | Date | Identifier | |
| Specification table for S.A.E. Standard balloon tires and rims for commercial vehicles. | 1st Aug 1929 | Box 17 \ 7 Scan055 | |
| Proposal for 19' well-based rims for the Phantom II, with a request for a sample pair for testing, and including a customer testimonial. | 1st Jan 1930 | Box 17 \ 7 Scan056 | |
| The effects of carrying two spare wheels on the steering, skidding, and riding comfort of a Phantom II. | 2nd Jan 1930 | Box 17 \ 7 Scan057 | |
| Assessment of vehicle riding comfort and the effects of carrying spare wheels. | 10th Jan 1930 | Box 17 \ 7 Scan058 | |
| Car test report concerning steering issues related to the Prince of Wales' car. | 10th Jan 1930 | Box 17 \ 7 Scan059 | |
| Modifications to the Prince of Wales' car, specifically the placement of spare wheels and its effect on steering. | 10th Jan 1930 | Box 17 \ 7 Scan060 | |
| Implications of increasing luggage box size and relocating the spare wheel on vehicle handling. | 13th Jan 1930 | Box 17 \ 7 Scan061 | |
| Expressing concern and withholding a signature on a standardisation form for 20' wheels with 7' tyres. | 13th Feb 1930 | Box 17 \ 7 Scan062 | |
| Querying the standardisation of 20-inch wheels with 7-inch tyres for the Phantom II model. | 13th Feb 1930 | Box 17 \ 7 Scan063 | |
| Discontinuing the 6.5 inch section tyre and replacing it with the 7 inch section for 20 inch rims. | 14th Feb 1930 | Box 17 \ 7 Scan064 | |
| Standardisation of chassis parts for 20 inch wheels with 7 inch tyres. | 1st Jan 1930 | Box 17 \ 7 Scan065 | |
| Difficulties of balancing wheels with 'Fort' tyres and proposing a solution. | 25th Mar 1930 | Box 17 \ 7 Scan066 | |
| Wheel arch clearances and modifications to the rear track for the P.2. model. | 7th Apr 1930 | Box 17 \ 7 Scan067 | |
| Steering complaint from Sir Henry Segrave, detailing issues with wheel balance and pivot lean. | 11th Apr 1930 | Box 17 \ 7 Scan068 | |
| Wheel balance issues with India Tyres and their detrimental effect on vehicle steering. | 14th Apr 1930 | Box 17 \ 7 Scan069 | |
| The excessive imbalance found in 'India' brand tyres and tubes taken from Major Segrave's car. | 23th Apr 1930 | Box 17 \ 7 Scan070 | |
| Recommendations for resolving Phantom II steering complaints regarding wheel balance, tyre pressure and pivot lean. | 13th May 1930 | Box 17 \ 7 Scan071 | |
| Page detailing adjustments for cross-steering tube toe-in, poundage, and shock absorber loading. | 13th May 1930 | Box 17 \ 7 Scan072 | |
| Shock absorber oil levels, tyre recommendations, and a test for cross-steering tube load. | 13th May 1930 | Box 17 \ 7 Scan073 | |
| Blueprint diagram detailing the cross steering tube specifications and adjustments. | 13th May 1930 | Box 17 \ 7 Scan074 | |
| Excessive front tyre wear on Phantom II cars due to incorrect toe-in, referencing a complaint from Dunlop Rubber Co. | 27th Jun 1930 | Box 17 \ 7 Scan075 | |
| List of customer cars exhibiting excessive toe-in, detailing vehicle models, tyre specifications, and mileage. | 22th Jul 1930 | Box 17 \ 7 Scan076 | |
| Wheel modifications to increase track width in response to radiator jellying experiments. | 22th Jul 1930 | Box 17 \ 7 Scan077 | |
| The production of experimental Phantom II road wheels with increased offset. | 25th Jul 1930 | Box 17 \ 7 Scan078 | |
| Decision not to standardise moving wheels further out due to the increase in car track width. | 30th Aug 1930 | Box 17 \ 7 Scan079 | |
| Implications and questioning the value of fitting wider wheels to a car. | 21th Oct 1930 | Box 17 \ 7 Scan080 | |
| Implications of fitting wider wheels to the Phantom II model. | 24th Oct 1930 | Box 17 \ 7 Scan081 | |
| Suggestion to reduce the angle of the wheel cone to save paintwork on the spokes from damage. | 18th Jun 1931 | Box 17 \ 7 Scan082 | |
| Internal memorandum from Sg. to Hs. regarding the question of wheels for America. | 18th Jun 1931 | Box 17 \ 7 Scan083 | |
| Steering problems caused by attempting to standardise 19-inch wheel rims on Phantom 11 cars for America. | 20th Jun 1931 | Box 17 \ 7 Scan084 | |
| Arguing against the instruction to seal road wheel hubs on P.2 & 25 HP models. | 19th Feb 1932 | Box 17 \ 7 Scan085 | |
| Method and purpose of sealing hubs on Phantom II and 25 HP models. | 23th Feb 1932 | Box 17 \ 7 Scan086 | |
| Standardisation of road wheels with two rows of spokes. | 9th Jun 1932 | Box 17 \ 7 Scan087 | |
| Standardisation of Chassis Parts form detailing the introduction of a new part to a chassis series. | 22th Sep 1932 | Box 17 \ 7 Scan088 | |
| Road wheel specifications for the 40/50 HP O.2 series chassis. | 22th Sep 1932 | Box 17 \ 7 Scan089 | |
| Standardising 19-inch wheels on Phantom II cars and the resulting effects. | 23th Sep 1932 | Box 17 \ 7 Scan090 | |
| Speedometer revolutions for 19-inch wheels on a Phantom II. | 24th Sep 1932 | Box 17 \ 7 Scan091 | |
| The use of 19-inch wheels on Phantom II cars and axle ratios for Continental models. | 27th Sep 1932 | Box 17 \ 7 Scan092 | |
| Standardisation of 19' road wheels with two rows of spokes to lower the chassis. | 17th Aug 1932 | Box 17 \ 7 Scan093 | |
| Standardisation form for a new chassis part, specifying the first chassis for fitment and associated costs. | 17th Sep 1932 | Box 17 \ 7 Scan094 | |
| Declining the fitting of air-wheel tyres to chassis due to a lack of experience and potential danger. | 27th Jul 1934 | Box 17 \ 7 Scan095 | |
| The unsuitability of air wheel tyres for Chassis No.1-WJ, confirming the customer will use standard Balloon tyres instead. | 6th Aug 1934 | Box 17 \ 7 Scan096 | |
| Efforts to reduce vehicle weight by using lighter materials and creating new standards. | 29th Oct 1925 | Box 18 \ 1 Scan001 | |
| Modifications to lighten the Phantom engine, with comparisons to the Silver Ghost. | 1st Dec 1925 | Box 18 \ 1 Scan002 | |
| Modifications to the Lighter Phantom Engine, including increasing the cylinder block height. | 7th Jun 1926 | Box 18 \ 1 Scan003 | |
| Examination of a new front axle, highlighting design flaws and recommending improvements. | 10th Jun 1926 | Box 18 \ 1 Scan004 | |
| Weight specification sheet for the EAC-V11 chassis. | 2nd Feb 1927 | Box 18 \ 1 Scan005 | |
| Specification sheet detailing modifications and weights for engine components like pistons and governors. | 9th Feb 1927 | Box 18 \ 1 Scan006 | |
| Stating the approximate weight of the S.S. Engine and Gear Box. | 29th Aug 1928 | Box 18 \ 1 Scan007 | |
| Tests of the 'SS' engine unit's oiling system and its weight compared to the Phantom engine. | 13th Sep 1928 | Box 18 \ 1 Scan008 | |
| Graph of oil flows versus engine RPM for a Super-Sports engine. | 10th Sep 1928 | Box 18 \ 1 Scan009 | |
| Blank document page marked with a 'Print Room' stamp. | 13th Sep 1928 | Box 18 \ 1 Scan010 | |
| Graph of oil pressures versus engine RPM for a Super Sports Engine. | 10th Sep 1928 | Box 18 \ 1 Scan011 | |
| Received and stamped by the Print Room in Derby. | 13th Sep 1928 | Box 18 \ 1 Scan012 | |
| Requesting clarification on the weight saved on the gearbox for the 'SS' engine unit. | 18th Sep 1928 | Box 18 \ 1 Scan013 | |
| Weight breakdown and specifications for the 18-EX chassis. | 23th Nov 1928 | Box 18 \ 1 Scan014 | |
| The initial road test and general impression of the new 'SS' chassis, comparing it to the Phantom. | 23th Nov 1928 | Box 18 \ 1 Scan015 | |
| Comparison of chassis weights between the Standard 40/50 'V' Series and the 'SS' Chassis. | 1st Jan 1929 | Box 18 \ 1 Scan016 | |
| The weight of the 18-EX chassis and the complete car. | 1st Jan 1929 | Box 18 \ 1 Scan017 | |
| Weight of accessories, tools, and bodies for experimental cars 18-EX and 22-EX. | 30th Jan 1929 | Box 18 \ 1 Scan018 | |
| Request for front axle, rear axle, and chassis weights for the 'SS' ('J2' Series) for springing purposes. | 9th Apr 1929 | Box 18 \ 1 Scan019 | |
| Car performance, focusing on weight reduction and comparisons between the 20 HP, Phantom, and Chrysler models. | 13th Apr 1929 | Box 18 \ 1 Scan020 | |
| Comparative table of car data including capacity, weight, gear ratio, and fuel consumption for various models. | 15th Apr 1929 | Box 18 \ 1 Scan021 | |
| Required weights with some other additions, in reply to a previous communication. | 15th Apr 1929 | Box 18 \ 1 Scan022 | |
| List of weights in pounds for S.S. chassis components. | 16th Apr 1929 | Box 18 \ 1 Scan023 | |
| Request for chassis and unsprung weight information to estimate road spring poundages. | 16th Apr 1929 | Box 18 \ 1 Scan024 | |
| Chassis weight of a 19-EX model with and without Lucas P.100 headlamps. | 23th Apr 1929 | Box 18 \ 1 Scan025 | |
| Listing springs successfully fitted to experimental cars with their corresponding weights. | 1st Jun 1929 | Box 18 \ 1 Scan026 | |
| Summary of dynamometer performance, weight distribution, and consumption data for S.S. and Phantom models. | 9th Jul 1929 | Box 18 \ 1 Scan027 | |
| Placement of spare wheels at the rear of a car for H.R.H. The Prince of Wales and its impact on vehicle dynamics. | 26th Nov 1929 | Box 18 \ 1 Scan028 | |
| Table of chassis weights for the Phantom II and 20/25 models. | 26th Nov 1929 | Box 18 \ 1 Scan029 | |
| Table detailing weight over front and rear axles, shock damper loadings, and total car weight for specific vehicle references. | 28th Nov 1929 | Box 18 \ 1 Scan030 | |
| Disadvantages of carrying two spare wheels at the rear of cars, particularly concerning increased length and parking issues. | 28th Nov 1929 | Box 18 \ 1 Scan031 | |
| Placement of spare wheels on the Phantom II and its impact on vehicle handling and ride quality. | 3rd Dec 1929 | Box 18 \ 1 Scan032 | |
| Tests concerning the effects of carrying two spare wheels on the Phantom II's steering, skidding, and riding comfort. | 2nd Jan 1930 | Box 18 \ 1 Scan033 | |
| Summary of the effects of carrying two spare wheels on riding comfort and appearance. | 10th Jan 1930 | Box 18 \ 1 Scan034 | |
| Car test report, the Prince of Wales' car, and related steering issues. | 10th Jan 1930 | Box 18 \ 1 Scan035 | |
| Modifications to the Prince of Wales' car, concerning the addition of two rear wheels and the impact on steering. | 10th Jan 1930 | Box 18 \ 1 Scan036 | |
| Proposal to increase luggage box size by moving the spare wheel and the resulting effects on weight distribution and steering. | 13th Jan 1930 | Box 18 \ 1 Scan037 | |
| Comparing the unsprung weight and handling characteristics of the PI and PII rear axles. | 3rd Jun 1930 | Box 18 \ 1 Scan038 | |
| Error in wheel and tyre weight figures and the intention to reduce road spring weight. | 4th Jun 1930 | Box 18 \ 1 Scan039 | |
| Calculation of the unsprung weight for a Phantom II rear axle. | 4th Jun 1930 | Box 18 \ 1 Scan040 | |
| Weight specification for an E.A.C. SS Engine & Gearbox unit. | 3rd Sep 1930 | Box 18 \ 1 Scan041 | |
| Urgent request for the separated weights of a chassis and a Park Ward Limousine body, with handwritten calculations. | 3rd Sep 1930 | Box 18 \ 1 Scan042 | |
| Weight specifications for a 25-EX L.H. Phantom II Park Ward enclosed limousine body. | 11th Sep 1930 | Box 18 \ 1 Scan043 | |
| Unexpectedly heavy weight of the body on the 26-EX Continental Saloon. | 17th Oct 1930 | Box 18 \ 1 Scan044 | |
| Internal request for spring poundages and body weights for a Phantom II, 25-EX, with handwritten figures provided. | 17th Nov 1930 | Box 18 \ 1 Scan045 | |
| Body weight and spring loads for a Phantom II, chassis 25-EX. | 18th Nov 1930 | Box 18 \ 1 Scan046 | |
| Car weight discrepancies, attributing them to accessories and defending the company's approach to customer-specified bodies. | 2nd Feb 1931 | Box 18 \ 1 Scan047 | |
| Discrepancies in the weight of various car bodies and accessories. | 1st Feb 1931 | Box 18 \ 1 Scan048 | |
| The weight and size of 6-seater full-size Pullman limousine bodies. | 6th Feb 1931 | Box 18 \ 1 Scan049 | |
| Reliability of car weight data, the impact of coachbuilder fittings, and a call for more accurate weighing of experimental cars. | 17th Feb 1931 | Box 18 \ 1 Scan050 | |
| Barker's accessories, their quality, and a request to collect weight data for various cars. | 2nd Mar 1931 | Box 18 \ 1 Scan051 | |
| Confidential memo discussing car body weights, exceeding limits, and coachwork inspection. | 2nd Mar 1931 | Box 18 \ 1 Scan052 | |
| Specification sheet detailing chassis, body, and total weights for various car models. | 25th Mar 1931 | Box 18 \ 1 Scan053 | |
| Front and rear chassis weights for the L.H. Phantom II and 20/25-HP models. | 25th Mar 1931 | Box 18 \ 1 Scan054 | |
| Weight increase of the 40/50 chassis due to production modifications. | 12th Jan 1933 | Box 18 \ 1 Scan055 | |
| Table comparing the weight of parts between N.2 and O series productions, showing the total chassis weight increase. | 12th Jan 1933 | Box 18 \ 1 Scan056 | |
| Weight of the 40/50 chassis and accounting for weight differences between models. | 13th Jan 1933 | Box 18 \ 1 Scan057 | |
| Steady weight increase of the 40/50 HP chassis across various series. | 18th Jan 1933 | Box 18 \ 1 Scan058 | |
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