| Description | Date | Identifier | |
| Blueprint with two graphs comparing vehicle acceleration figures and speedometer calibrations. | 1st Sep 1930 | Box 92 \ 2 scan0101 | |
| Comparative analysis of vehicle cooling systems and performance data for various cars. | 23th Jan 1931 | Box 92 \ 2 scan0102 | |
| Loss of horsepower in the Phantom II American Chassis & N. Series. | 23th Jan 1931 | Box 92 \ 2 scan0103 | |
| Maximum speeds of Phantom II cars and the factors affecting performance, such as body type and windage. | 9th Mar 1931 | Box 92 \ 2 scan0104 | |
| Proposal outlining experiments to increase the power output on the Phantom II engine. | 7th Apr 1931 | Box 92 \ 2 scan0105 | |
| Engine development considerations for valve train, induction, and exhaust systems. | 7th Apr 1931 | Box 92 \ 2 scan0106 | |
| Engine power enhancement experiments and modifications. | 7th Apr 1931 | Box 92 \ 2 scan0107 | |
| Comparison of engine performance against Bentley, with suggestions for improvements. | 21th Apr 1931 | Box 92 \ 2 scan0108 | |
| Engine performance, speed comparison, and future engine considerations. | 21th Apr 1931 | Box 92 \ 2 scan0109 | |
| Engine power output, comparing the Phantom engine with Ricardo sleeve designs, and considering future improvements. | 24th Apr 1931 | Box 92 \ 2 scan0110 | |
| Calculated horsepower required for a Phantom II to achieve 100 MPH, referencing a graph and comparing to Bentley performance. | 1st May 1931 | Box 92 \ 2 scan0111 | |
| Engine and body modifications for a P.2 100 M.P.H. demonstration vehicle. | 20th May 1931 | Box 92 \ 2 scan0112 | |
| Experiments with different valve lifts, camshafts, and carburetters to improve engine power output on the 25 HP and 40/50 models. | 22th May 1931 | Box 92 \ 2 scan0113 | |
| Power output test on a Continental Phantom II engine with modified timing and camshaft. | 23th May 1931 | Box 92 \ 2 scan0114 | |
| High speed engine experiments, focusing on carburettors, detonation, and vibration. | 28th May 1931 | Box 92 \ 2 scan0115 | |
| On experiments conducted to increase the horsepower of the F.2 engine. | 3rd Jun 1931 | Box 92 \ 2 scan0116 | |
| Experiments to increase engine power by modifying carburetters, camshaft, and compression ratio. | 3rd Jun 1931 | Box 92 \ 2 scan0117 | |
| Test results comparing power output and induction pipe depression using an Eagle IX carburetter versus twin carburetters. | 3rd Aug 1931 | Box 92 \ 2 scan0118 | |
| Graph showing power loss to a standard exhaust system for engine SS-15, plotting Brake Horse Power against engine RPM. | 9th Jan 1930 | Box 92 \ 2 scan0119 | |
| Graph of Phantom II power curves with an open exhaust, comparing two different camshaft configurations. | 3rd Jun 1931 | Box 92 \ 2 scan0120 | |
| Graph comparing B.M.E.P. curves for a Phantom II engine with standard versus 'R Type' camshafts. | 3rd Jun 1931 | Box 92 \ 2 scan0121 | |
| Power curves for a Phantom II Standard Engine, comparing performance with the silencer cut-out open versus shut. | 3rd Jun 1931 | Box 92 \ 2 scan0122 | |
| Graph of Brake Mean Effective Pressure (B.M.E.P.) vs engine speed (R.P.M) for a PII standard engine with two different exhaust configurations. | 3rd Jun 1931 | Box 92 \ 2 scan0123 | |
| Graph of PII power curves for various carburettor and camshaft configurations, all taken with open exhaust. | 3rd Jun 1931 | Box 92 \ 2 scan0124 | |
| Graph of BMEP curves versus RPM for four different carburettor and camshaft configurations, all tested with open exhaust. | 3rd Jun 1931 | Box 92 \ 2 scan0125 | |
| Camshaft design, compression ratios, and fuel mixtures to achieve high engine power. | 1st Jun 1931 | Box 92 \ 2 scan0126 | |
| The horsepower required for a Phantom II to achieve 100 M.P.H. and a comparison to Bentley's 8-litre engine. | 8th Jun 1931 | Box 92 \ 2 scan0127 | |
| Feasibility and limitations of increasing the Phantom II's compression ratio. | 11th Jun 1931 | Box 92 \ 2 scan0128 | |
| Test report on the improved high-speed performance of a Phantom II car (27-EX) at Brooklands. | 13th Jul 1931 | Box 92 \ 2 scan0129 | |
| Various engine troubles and failures experienced with a vehicle during testing. | 10th Jul 1931 | Box 92 \ 2 scan0130 | |
| Performance test results for car 27Ex. at Brooklands, including an acceleration graph. | 10th Jul 1931 | Box 92 \ 2 scan0131 | |
| High power camshaft tests, comparing timing and performance of Phantom II and China 25HP engines. | 1st May 1931 | Box 92 \ 2 scan0132 | |
| Engine valve and camshaft testing to improve power and efficiency. | 1st Aug 1931 | Box 92 \ 2 scan0133 | |
| Tabulated list comparing valve openings, lift, and area for various engines. | 1st Aug 1931 | Box 92 \ 2 scan0134 | |
| Graph of Power Output (BHP) and Induction Pipe Depression vs R.P.M. for a China Unit 3.25 Bore engine. | 1st Aug 1931 | Box 92 \ 2 scan0135 | |
| Performance graph showing the effect of increasing valve lift on a 'China' engine. | 1st Aug 1931 | Box 92 \ 2 scan0136 | |
| Graph showing the effect of increased valve lift on the Japan engine's performance, comparing standard and increased lift. | 18th Sep 1931 | Box 92 \ 2 scan0137 | |
| Analysis of tests on the Phantom II engine to optimize power output by studying the effects of the camshaft. | 18th Sep 1931 | Box 92 \ 2 scan0138 | |
| Engine performance, comparing various valve sizes, camshafts, and carburetter setups. | 8th Sep 1931 | Box 92 \ 2 scan0139 | |
| Performance graph comparing twin carburettor and standard induction systems by plotting BHP and BMEP against RPM. | 20th Jan 1931 | Box 92 \ 2 scan0140 | |
| Performance graph comparing large and small engine valves based on BHP and BMEP against engine RPM. | 20th Aug 1931 | Box 92 \ 2 scan0141 | |
| Graph comparing engine performance based on different valve lift specifications and timing. | 9th Aug 1931 | Box 92 \ 2 scan0142 | |
| Performance graph comparing different high lift rockers and carburettors. | 9th Aug 1931 | Box 92 \ 2 scan0143 | |
| Graph showing the effect of increased valve lift on a standard cylinder head at different RPMs. | 9th Aug 1931 | Box 92 \ 2 scan0144 | |
| Graph comparing engine performance curves (BHP and BMEP) against RPM for three different inlet valve timing configurations. | 9th Aug 1931 | Box 92 \ 2 scan0145 | |
| Performance graph comparing various valve and carburetor configurations with a 1.1/4' camshaft. | 9th Aug 1931 | Box 92 \ 2 scan0146 | |
| Graph showing the effect of increased valve lift on engine B.HP and B.M.E.P. | 9th Aug 1931 | Box 92 \ 2 scan0147 | |
| Blueprint for an Inlet Valve (PII) with a 30° seat and small diameter. | 2nd Oct 1931 | Box 92 \ 2 scan0148 | |
| Test results for the Phantom II engine's power output, focusing on choke sizes, depression, and carburetter setups. | 2nd Oct 1931 | Box 92 \ 2 scan0149 | |
| Carburetter types, dimensions, and performance characteristics for various engine models. | 2nd Oct 1931 | Box 92 \ 2 scan0150 | |
| Graph comparing power output (B.HP and B.M.E.P.) versus R.P.M. for different carburettor setups on a 120° camshaft engine. | 5th Oct 1931 | Box 92 \ 2 scan0151 | |
| Increased performance testing of the 27-EX car at Brooklands track with non-standard engine parts. | 5th Oct 1931 | Box 92 \ 2 scan0152 | |
| Graph comparing power output with a 5.25 compression ratio, testing different carburettor configurations. | 5th Oct 1931 | Box 92 \ 2 scan0153 | |
| Performance tests for a 27 Ex. Car at Brooklands, showing acceleration, speed, and valve timing. | 5th Oct 1931 | Box 92 \ 2 scan0154 | |
| The power curve data for engine 31-GX, showing horsepower at various RPMs. | 2nd Feb 1932 | Box 92 \ 2 scan0155 | |
| Power output curves for the Phantom II with various carburetters and the power loss from the silencer. | 2nd May 1932 | Box 92 \ 2 scan0156 | |
| The advance curve characteristics for the large bore Phantom II engine. | 23th May 1933 | Box 92 \ 2 scan0157 | |
| Graph showing various spark advance curves against RPM for the Phantom II No. 25 large bore unit. | 22th May 1933 | Box 92 \ 2 scan0158 | |
| Acceleration test results for car model 27-EX on Shardlow Road. | 29th Jun 1933 | Box 92 \ 2 scan0159 | |
| Modification to the Phantom II semi-expanding carburetter to prevent flooding on inclines. | 30th Jun 1933 | Box 92 \ 2 scan0160 | |
| Carburetter level settings, adjustments, and production quality issues. | 30th Jun 1933 | Box 92 \ 2 scan0161 | |
| Comparative test results of acceleration times using a new light float versus a standard float in a carburetter. | 30th Jun 1933 | Box 92 \ 2 scan0162 | |
| Power curves data for a P. II. No. 7 large bore unit with a semi-expanding carburettor. | 8th Aug 1933 | Box 92 \ 2 scan0163 | |
| Comparison of Phantom II acceleration times for three different experimental car configurations. | 8th Aug 1933 | Box 92 \ 2 scan0164 | |
| 8 Litre Phantom exhaust valve failure during power testing and subsequent modifications. | 30th Aug 1933 | Box 92 \ 2 scan0165 | |
| Comparative tests between the large inlet valve head and the standard head for the 8 Litre Phantom. | 28th Sep 1933 | Box 92 \ 2 scan0166 | |
| Graph comparing power tests of an 8.1 Litre Phantom engine with various sized inlet valves. | 8th Sep 1933 | Box 92 \ 2 scan0167 | |
| Power test graph for the 8.1 litre Phantom engine comparing different carburetor and cylinder head configurations. | 17th Oct 1933 | Box 92 \ 2 scan0168 | |
| Preliminary experiments on air cleaner dimensions and performance for the Phantom II Tank Engine. | 17th Oct 1933 | Box 92 \ 2 scan0169 | |
| Graph showing the differences in horsepower with 'Tank' air filters fitted to a Phantom II carburetter air intake. | 17th Oct 1933 | Box 92 \ 2 scan0170 | |
| Acceleration test results for the Continental 40/50 HP Phantom II carburetter. | 3rd Nov 1933 | Box 92 \ 2 scan0171 | |
| Vehicle weight reduction, performance improvements, and comparisons between different chassis models. | 24th Sep 1929 | Box 92 \ 2 scan0172 | |
| Reprinted road test review from 'The Motor' magazine, featuring performance graphs for a Phantom II Saloon. | 24th Sep 1929 | Box 92 \ 2 scan0173 | |
| Article from 'MOTOR SPORT' reviewing a car's performance, featuring an acceleration curve and a photograph. | 7th Apr 1932 | Box 92 \ 2 scan0174 | |
| Promotional document for the Phantom II 'Continental' model, including full specifications and a detailed road test review. | 6th Nov 1933 | Box 92 \ 2 scan0175 | |
| Comparison of an old type carburetter with an old camshaft and a new type carburetter with a new camshaft. | 6th Nov 1933 | Box 92 \ 2 scan0176 | |
| Power comparison graph for a 7.67 Litre Phantom II engine with an open exhaust, comparing different carburettor and camshaft configurations. | 3rd Oct 1933 | Box 92 \ 2 scan0177 | |
| The development and performance comparison of the Phantom I Expanding Carburetter (Lec.3432). | 6th Nov 1933 | Box 92 \ 2 scan0178 | |
| Carburettor testing, modifications, and performance with an air silencer. | 6th Nov 1933 | Box 92 \ 2 scan0179 | |
| Test results for engine silencer performance and power loss at 3000 R.P.M. | 6th Nov 1933 | Box 92 \ 2 scan0180 | |
| 40/50 model acceleration and maximum speed in relation to different carburettors, axle ratios, and wheels. | 6th Nov 1933 | Box 92 \ 2 scan0181 | |
| Recommending acceleration tests and discussing the impact of increased chassis and coachwork weight on performance. | 6th Nov 1933 | Box 92 \ 2 scan0182 | |
| Blueprint detailing modifications for a main jet sleeve, including drilling four holes. | 7th Nov 1933 | Box 92 \ 2 scan0183 | |
| Blueprint showing a modification to a needle valve for a Phantom engine, including diameter and taper dimensions. | 7th Nov 1933 | Box 92 \ 2 scan0184 | |
| Blueprint of a modification to a carburetor body (Phantom Leg 3432). | 7th Nov 1933 | Box 92 \ 2 scan0185 | |
| Power curves for an 8-litre engine with a high compression head intended for the Vulture. | 11th Dec 1933 | Box 92 \ 2 scan0186 | |
| Power test results for an 8.1 Litre Phantom engine, comparing 5.5:1 and 6:1 compression ratios. | 8th Dec 1938 | Box 92 \ 2 scan0187 | |
| Graph comparing power tests for an 8.1 Litre Phantom engine, contrasting early and late valve timing with an open exhaust. | 8th Dec 1935 | Box 92 \ 2 scan0188 | |
| Performance graph comparing two different carburettor setups on an 8.1 Litre Phantom engine. | 8th Dec 1933 | Box 92 \ 2 scan0189 | |
| Comparing the performance of an 8-litre engine against a 7.6-litre unit, mentioning power output and acceleration. | 13th Dec 1933 | Box 92 \ 2 scan0190 | |
| Performance comparison chart of various Phantom and Vulture engine configurations versus RPM. | 12th Dec 1933 | Box 92 \ 2 scan0191 | |
| Power curves of the 8-Litre engine and requesting comparative horsepower data. | 12th Dec 1933 | Box 92 \ 2 scan0192 | |
| Modifications for test car 35-EX, using parts from 32-EX, before continuing tests in France. | 10th Jul 1936 | Box 92 \ 3 scan0001 | |
| Gearbox modifications for vehicle 32-EX, including using Cadillac gears and parts from 35-EX. | 10th Jul 1936 | Box 92 \ 3 scan0002 | |
| Modifications to the radiator yoke bracing for the 35-EX model intended for France. | 30th Jul 1936 | Box 92 \ 3 scan0003 | |
| Canceling instructions for a second spare wheel bracket on the 35-EX 10,000 miles car. | 18th Aug 1936 | Box 92 \ 3 scan0004 | |
| The adjustment of side steering tube springs for chassis 35-EX. | 18th Aug 1936 | Box 92 \ 3 scan0005 | |
| Request to refit the standard fan pulley ratio and a set of Cadillac blades to the 35-EX car. | 3rd Sep 1936 | Box 92 \ 3 scan0006 | |
| Four required repair jobs for car 35-EX before it begins a 15,000-mile test. | 17th Sep 1936 | Box 92 \ 3 scan0007 | |
| Requesting the preparation of parts to apply a successful modification from the 36-EX clutch to the 35-EX clutch. | 17th Sep 1936 | Box 92 \ 3 scan0008 | |
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