| Description | Date | Identifier | |
| Instructions detailing the construction and materials of primary and secondary electrical windings. | 8th Dec 1924 | West Wittering \ S \ June1928-August1928 Scan125 | |
| Continued instruction note comparing the properties of Bosch and EW6 armatures. | 8th Dec 1924 | West Wittering \ S \ June1928-August1928 Scan126 | |
| Adoption of thinner dynamo armature plates for the Phantom dynamo. | 23th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan127 | |
| Unexplained results from tests on hydraulic shock absorbers, specifically the difference between high and low pressure end diagrams. | 24th Jul 1928 | West Wittering \ S \ June1928-August1928 Scan128 | |
| Results of experimental tests on various brake linings. | 1st Aug 1928 | West Wittering \ S \ June1928-August1928 Scan129 | |
| Note about a cost reduction for using Tenoid over Ferodo material. | 25th Jul 1928 | West Wittering \ S \ June1928-August1928 Scan130 | |
| Confirming the delivery schedule for a 20 HP car. | 25th Jul 1928 | West Wittering \ S \ June1928-August1928 Scan131 | |
| Steering wobble and shimmy issues on car 12-G-4 after testing with larger wheels and tyres. | 27th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan132 | |
| Performance report on an experimental sequence starter motor with a tapered and outward sliding armature. | 27th Jul 1928 | West Wittering \ S \ June1928-August1928 Scan133 | |
| Analysis of a motor's performance, comparing test results with initial calculations for torque and winding. | 22th Jun 1927 | West Wittering \ S \ June1928-August1928 Scan134 | |
| Continued page discussing motor performance, torque-ampere characteristics, and armature design. | 22th Jun 1927 | West Wittering \ S \ June1928-August1928 Scan135 | |
| Analysis of starter motor performance, comparing the torque and resistance of 41 and 45 slot armatures. | 29th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan136 | |
| Performance tests for A.T. Speedometers concerning temperature variation and mileage durability. | 29th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan137 | |
| The initial test run of the Super Sports Engine No. SS-3, detailing running conditions and a seized dynamo drive bush. | 27th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan138 | |
| The full load power curve tests of the 'SS' engine, comparing it to the Phantom engine. | 28th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan139 | |
| Engine performance testing, focusing on carburettor development, induction, and valve bounce. | 28th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan140 | |
| Engine testing, detailing a tappet lubrication issue and a weight comparison with the Phantom model. | 28th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan141 | |
| Power curve graph comparing 'Super Sports' Phantom, 'Continental' Phantom, and average production engines. | 28th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan142 | |
| Blank page with a red 'Print Room' stamp in the bottom right corner. | 29th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan143 | |
| Investigation into the cause of seizing of the dynamo drive pinion bush due to an oil splash lubrication issue. | 30th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan144 | |
| Engine testing, addressing oiling issues in the ignition tower, modifications to oil drain grooves, and tappet adjustments. | 30th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan145 | |
| Blueprint showing a modification to the oil drain slots in the governor housing of an S.S. Engine. | 30th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan146 | |
| Blank document page with a Print Room date stamp from the Derby facility. | 30th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan147 | |
| Diagram of an 'S.S.' dynamo drive, showing an experimental drain trough to feed oil to a bush. | 30th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan148 | |
| Blank page with a Print Room date stamp in the bottom right corner. | 30th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan149 | |
| The experimental testing of a Phantom dynamo with a coarser gauge armature for higher output. | 31th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan150 | |
| Test report on a higher output armature, detailing its performance, balancing speed, and control brush settings. | 31th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan151 | |
| Performance curve graph for a J Machine Dynamo, comparing different output armatures. | 31th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan152 | |
| Blank page with a red 'Print Room' stamp in the bottom right corner. | 31th Aug 1928 | West Wittering \ S \ June1928-August1928 Scan153 | |
| Installation difficulties and maintenance access for the two-unit battery in the Phantom model. | 1st Mar 1928 | West Wittering \ S \ March1928-May1928 Scan001 | |
| Battery maintenance, issues with heat and accessibility, and proposed improvements. | 1st Mar 1928 | West Wittering \ S \ March1928-May1928 Scan002 | |
| Observations of battery life in experimental cars equipped with an auto switch. | 2nd Mar 1928 | West Wittering \ S \ March1928-May1928 Scan003 | |
| The green lamp scheme and improvements to the auto charge control switch for various models. | 2nd Mar 1928 | West Wittering \ S \ March1928-May1928 Scan004 | |
| Proposed modification to a green lamp indicator circuit for improved system protection. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan005 | |
| Testing and rectifying unsatisfactory steering column movement on the 15-EX chassis. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan006 | |
| Test report on column vibrations and dash rigidity, comparing models 12-EX and 15-EX. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan007 | |
| Technical report discussing tangential road shocks, steering damping, and self-centering characteristics. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan008 | |
| Test report detailing the performance of a car's suspension, coachwork, and braking systems. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan009 | |
| Engine behaviour and a summary of suspension and steering performance. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan010 | |
| Blueprint comparing the effectiveness of two different column stay attachment designs. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan011 | |
| Blank page with a Print Room date stamp from Derby. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan012 | |
| Analysis of steering column movement under various support and isolation conditions. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan013 | |
| Page featuring a purple ink date stamp from the Derby print room. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan014 | |
| Advantages and feasibility of using dual ignition in 'India engines'. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan015 | |
| Comparison of spark advance, ignition, and compression ratios between Hispano, Lorraine, and 20 HP engines. | 1st Aug 1923 | West Wittering \ S \ March1928-May1928 Scan016 | |
| Turbulent type cylinder heads, ignition, and their effects on detonation in 20 HP and Phantom engines. | 1st Aug 1923 | West Wittering \ S \ March1928-May1928 Scan017 | |
| Ignition timing and recommending opposed synchronised dual ignition for the new India engine. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan018 | |
| Graph showing the necessary ignition advance for a 20 HP engine. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan019 | |
| Graph comparing ignition advance curves for a standard Phantom engine and one with a turbulent head. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan020 | |
| The testing of a special Watford EW6 Magneto, No.106012, and its performance issues. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan021 | |
| Magneto testing, modifications for noise reduction, and the use of bakelite gears. | 11th Feb 1928 | West Wittering \ S \ March1928-May1928 Scan022 | |
| The angular location of the distributor rotor for EW6 machines, awaiting a reply from a Mr. North. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan023 | |
| Testing Watford EW6 Magneto No.106012 for noise and performance. | 7th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan024 | |
| The maximum speed tests of the Continental Phantom (15-EX) and the effect of wind resistance. | 9th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan025 | |
| Top speed of the Continental Phantom X.469 (15-EX) and the effects of wind resistance. | 9th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan026 | |
| Static deflection tests for a Phantom Sports steering column, comparing standard and sports frames. | 9th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan027 | |
| Static stiffness and torsional tests on a Continental Phantom frame, comparing a standard chassis with one using rubber engine feet. | 9th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan028 | |
| Report page detailing experiments on chassis frame twist and torsional stiffness. | 9th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan029 | |
| Comparison of frame twist percentages between models 17-EX and 50 PH at various front wheel lift heights. | 12th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan030 | |
| Issues of scuttle jellying and bonnet rattles, comparing total and semi-isolation methods. | 12th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan031 | |
| Merits of semi-isolation over total isolation for reducing engine vibrations. | 13th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan032 | |
| Change in practice for valve gear rocker geometry to eliminate noise. | 13th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan033 | |
| Modified rocker angle fitted to a Sports Phantom, with a diagram illustrating eccentric thrust. | 14th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan034 | |
| Issue of bakelite tracking and proposed solutions including varnishing distributor heads. | 14th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan035 | |
| Potential solutions for electrical tracking issues in Bakelite distributor heads. | 12th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan036 | |
| Temperature-related accuracy variations in A.T. Speedometers. | 15th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan037 | |
| Feasibility of running a 6-cylinder engine on 3 cylinders and the limitations of the crankshaft damper. | 19th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan038 | |
| Impressions and review of the Buick Light Six vehicle. | 19th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan039 | |
| Performance review and comparison of Buick and Sunbeam competitor vehicles. | 19th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan040 | |
| Comparison table of specifications between a 20 HP Rolls-Royce and a Buick. | 21th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan041 | |
| Specification sheet detailing the particulars of a Buick Car. | 21th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan042 | |
| Specifications for inner and outer springs, total spring load, and vehicle turning circles. | 21th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan043 | |
| Comparison of hill-climbing performance figures for a Buick car and a Goshawk engine on a 31 cwt chassis. | 21th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan044 | |
| Diagrams and dimensions for a rubber bush and steel cradle for an engine bearer arm. | 19th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan045 | |
| Blank document page with a Print Room date stamp. | 19th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan046 | |
| Performance comparison graph showing top gear acceleration for a Buick Light Six versus a 20 HP Rolls-Royce. | 19th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan047 | |
| Blank sheet of paper with a purple ink 'Print Room' stamp from Derby. | 21th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan048 | |
| Report comparing the performance and efficiency of different steering worm gears. | 22th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan049 | |
| Technical memo detailing experiments and conclusions on worm and nut steering systems. | 19th Jul 1927 | West Wittering \ S \ March1928-May1928 Scan050 | |
| Analysis of steering friction with different axle arrangements, including measured values in a table. | 19th Jul 1927 | West Wittering \ S \ March1928-May1928 Scan051 | |
| Comparison table of steering specifications for various Phantom series models. | 23th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan052 | |
| Blank document page with a 'Print Room' archival stamp. | 23th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan053 | |
| Tests on the electrical tracking properties of pure and filled Bakelite, with further tests planned on varnished surfaces. | 23th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan054 | |
| Letter from Bakelite Limited regarding the unsuitability of their material where surface sparking is likely to occur. | 15th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan055 | |
| Torsion tests for the India 3 crankshaft, comparing its stiffness against the standard 20 HP shaft. | 23th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan056 | |
| Report page detailing the observed drop in crankshaft stiffness for various engines and comparing test results with Carter's formula. | 29th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan057 | |
| Comparing the torsional balance of twin-five, six-cylinder, and twin-six engines. | 29th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan058 | |
| Complaints and proposed solutions for the dynamo-battery system. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan059 | |
| Potential solutions for electrical system complaints and system arrangements for chassis 12-EX. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan060 | |
| Specifications for tumbler switches and green lamp switch units. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan061 | |
| Investigation into a fault with the green lamp operating switch in a dynamo-battery circuit during start-up. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan062 | |
| Page detailing temperature compensation for a green lamp and auto charge control switch units. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan063 | |
| Comparison of the reliability of an auto charge control switch versus a green lamp scheme. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan064 | |
| Continued explanation of the dynamo-battery circuit's warning indications and potential for damage. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan065 | |
| Tests conducted on staggering the orifices in Phantom and 20 HP hydraulic dampers. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan066 | |
| The effects of oil viscosity and temperature on shock absorber pressure, using staggered orifices. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan067 | |
| Analysis of shock damper performance, limitations, and design considerations regarding pressure, velocity, and ride comfort. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan068 | |
| Shock absorber performance, addressing issues with rubber buffers and the effects of velocity pressure. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan069 | |
| Analysis of suspension damper performance, comparing the existing '14-EX' system with an ideal system using pressure-velocity graphs. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan070 | |
| Page from a report discussing the need for an indicator to record internal pressures on shock absorbers. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan071 | |
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