| Description | Date | Identifier | |
| Comparing detonation in Hispano and EAC engines. | 1st Feb 1924 | Box 22 \ 1 Scan119 | |
| Secret internal memorandum requesting further information on Hispano steering characteristics and comparing pivot inclinations. | 27th Feb 1924 | Box 22 \ 1 Scan120 | |
| Comparing springs in the side steering tube of a Hispano car with the standard 40/50 model. | 29th Feb 1924 | Box 22 \ 1 Scan121 | |
| Secret memorandum discussing the advantages of a modified semi-servo brake system over other patents and previous designs. | 1st Mar 1924 | Box 22 \ 1 Scan122 | |
| Continued memorandum on servo and braking systems, referencing Hispano and Renault patents. | 3rd Mar 1924 | Box 22 \ 1 Scan123 | |
| Describing a modified semi-servo brake operating system scheme. | 3rd Mar 1924 | Box 22 \ 1 Scan124 | |
| Brake and servo wear, angle of action and back brake equaliser design. | 4th Mar 1924 | Box 22 \ 1 Scan125 | |
| Secret memo discussing brake operation, comparing the RRM system to others, and outlining the advantages of a proposed new design. | 4th Mar 1924 | Box 22 \ 1 Scan126 | |
| Secret internal memorandum discussing improvements and alternatives for the clutch for EAC's models. | 4th Mar 1924 | Box 22 \ 1 Scan127 | |
| Different designs for a clutch brake and the necessity of a quick-stopping mechanism. | 7th Mar 1924 | Box 22 \ 1 Scan128 | |
| Design and setup of springs within a steering tube for better control and reduced wear. | 7th Mar 1924 | Box 22 \ 1 Scan129 | |
| Brakes Scheme DES.60, focusing on equal forward and backward servo operation. | 10th Mar 1924 | Box 22 \ 1 Scan130 | |
| Continued memo discussing the mechanical details of a car being tested. | 11th Mar 1924 | Box 22 \ 1 Scan131 | |
| Obtaining data from a Hispano engine. | 11th Mar 1924 | Box 22 \ 1 Scan132 | |
| Comparing the specifications and power output of Hispano and E.A.C. engines. | 11th Mar 1924 | Box 22 \ 1 Scan133 | |
| Fuel distribution and the effects of dual ignition on a Hispano engine. | 11th Mar 1924 | Box 22 \ 1 Scan134 | |
| Continuation page of a report on indicator valve performance and volumetric efficiency. | 12th Jul 1923 | Box 22 \ 1 Scan135 | |
| Indicator work and performance tests conducted on a Hispano engine. | 12th Jul 1923 | Box 22 \ 1 Scan136 | |
| Hispano indicator diagrams taken at 1500 and 2500 RPM. | 12th Jul 1923 | Box 22 \ 1 Scan137 | |
| Performance chart showing piston displacement for crank angles of a Hispano engine. | 4th Aug 1917 | Box 22 \ 1 Scan138 | |
| Small pencil sketch of a component section. | 12th Mar 1924 | Box 22 \ 1 Scan139 | |
| Indicator diagram showing piston displacement for crank angles of a Hispano engine cylinder. | 12th Mar 1924 | Box 22 \ 1 Scan140 | |
| Graph comparing the specific output of E.A.C. and Hispano engines. | 12th Mar 1924 | Box 22 \ 1 Scan141 | |
| Graph comparing B.M.E.P. against conventional gas velocity past valves for E.A.C. and Hispano engines. | 12th Mar 1924 | Box 22 \ 1 Scan142 | |
| Performance curves for a Hispano engine, detailing cooling water flow and induction pipe depression. | 12th Mar 1924 | Box 22 \ 1 Scan143 | |
| Graph comparing E.A.C. and Hispano inlet valve lift diagrams against crankshaft degrees. | 12th Mar 1924 | Box 22 \ 1 Scan144 | |
| Graph plotting inlet valve displacement against piston displacement, comparing 'Hispano' and 'E.A.C.' specifications. | 12th Mar 1924 | Box 22 \ 1 Scan145 | |
| Graph comparing ignition advance required for maximum power on E.A.C. and Hispano engines, showing the effect of synchronised dual ignition. | 10th Mar 1924 | Box 22 \ 1 Scan146 | |
| Performance curves for a Hispano engine showing horse power, efficiency, and pressures against RPM. | 10th Mar 1924 | Box 22 \ 1 Scan147 | |
| Diagrams showing the valve timing and displacement curves for a Hispano engine. | 10th Mar 1924 | Box 22 \ 1 Scan148 | |
| Load versus deflection graph for Hispano-Suiza front road springs. | 25th Aug 1928 | Box 22 \ 1 Scan149 | |
| Blank page with a red 'Print Room' stamp from Derby. | 25th Aug 1928 | Box 22 \ 1 Scan150 | |
| Test data for a Hispano servo, focusing on the ratio of torque output to input. | 11th Mar 1924 | Box 22 \ 1 Scan151 | |
| Servo efficiency and performance characteristics. | 1st Mar 1924 | Box 22 \ 1 Scan152 | |
| The particulars and performance of Hispano front springs. | 11th Mar 1924 | Box 22 \ 1 Scan153 | |
| Secret memorandum discussing the design and comparison of different brake systems, including servo-assisted and Hispano types. | 14th Mar 1924 | Box 22 \ 1 Scan154 | |
| Continued memorandum discussing stress ratios, mentioning a Mr. Stent and an item designated EAC.1. | 8th Apr 1924 | Box 22 \ 1 Scan155 | |
| List of weights in pounds and ounces for various units of a Hispano Suiza engine. | 8th Apr 1924 | Box 22 \ 1 Scan156 | |
| List of engine component weights in pounds and ounces. | 28th Apr 1924 | Box 22 \ 1 Scan157 | |
| The performance and modifications of a 4-wheel brake system. | 28th Apr 1924 | Box 22 \ 1 Scan158 | |
| The performance of two braking schemes, the 'RRM' and the 'Agreed', focusing on servo assistance and lag. | 28th Apr 1924 | Box 22 \ 1 Scan159 | |
| The operation of the brake pedal and servo assistance mechanism. | 28th Apr 1924 | Box 22 \ 1 Scan160 | |
| Comparing the 'agreed' brake scheme with a 'Hispano' system. | 28th Apr 1924 | Box 22 \ 1 Scan161 | |
| The M. DES. 60 braking scheme, its servo-related faults, and a comparison with other four-wheel brake systems. | 28th Apr 1924 | Box 22 \ 1 Scan162 | |
| Brake design improvements, patenting a new ratchet drive, and engine issues, with a comparison to a Renault model. | 28th Aug 1924 | Box 22 \ 1 Scan163 | |
| Inefficiency and weaknesses of a re-built Hispano servo motor during testing. | 29th Apr 1924 | Box 22 \ 1 Scan164 | |
| Hispano servo motor, detailing performance data after restoration. | 29th Apr 1924 | Box 22 \ 1 Scan165 | |
| Producing 'brake jaggers' on Hispano, Isotta, and Delage cars. | 1st May 1924 | Box 22 \ 1 Scan166 | |
| Brake performance, testing different brake shoes and linings to investigate the cause of 'jagger' vibrations. | 20th May 1924 | Box 22 \ 1 Scan167 | |
| Tests to prevent brake jaggers by modifying the brake shoe lining. | 1st May 1924 | Box 22 \ 1 Scan168 | |
| List of unsuccessful experiments to eliminate front wheel brake jaggers on vehicle EAC.111. | 1st May 1924 | Box 22 \ 1 Scan169 | |
| List of experiments conducted on brakes and brake carriers. | 1st May 1924 | Box 22 \ 1 Scan170 | |
| Methods to eliminate brake 'jaggers' and listing factors that do not cause the issue. | 1st May 1924 | Box 22 \ 1 Scan171 | |
| The 'RRM' scheme of brakes, discussing brake jaggering, servo operation and lag. | 1st May 1924 | Box 22 \ 1 Scan172 | |
| Comparing the driver feel and performance of the RRM braking scheme against the Hispano scheme. | 1st May 1924 | Box 22 \ 1 Scan173 | |
| Secret memo regarding the arrival of cars for testing different 4-wheel brake schemes. | 1st May 1924 | Box 22 \ 1 Scan174 | |
| Comparison table of different front wheel brake schemes and their performance characteristics. | 29th Apr 1924 | Box 22 \ 1 Scan175 | |
| Secret memo discussing experiments to avoid brake 'jaggers' by testing stiff brake drums, referencing Hispano and Isotta cars. | 5th Mar 1924 | Box 22 \ 1 Scan176 | |
| Secret memo discussing tests on a car's brake servo with a modified reduction ratio, comparing its performance to a Hispano. | 9th May 1924 | Box 22 \ 1 Scan177 | |
| Instruction sheet for Hispano-Suiza front shock absorbers with pressure specifications. | 15th May 1924 | Box 22 \ 1 Scan178 | |
| The policy and characteristics of four-wheel brake systems. | 21th May 1924 | Box 22 \ 1 Scan179 | |
| The dangers of wheel lock during braking and its effect on steering. | 21th May 1924 | Box 22 \ 1 Scan180 | |
| Continued memorandum discussing the variation in braking performance between different cars. | 21th May 1924 | Box 22 \ 1 Scan181 | |
| Request to order new Ferodo brake linings for a Hispano car, including specifications. | 27th May 1924 | Box 22 \ 1 Scan182 | |
| Confidential internal memorandum discussing the patent implications of using a plate clutch for a servo mechanism, compared to Hispano and Renault designs. | 23th Jun 1924 | Box 22 \ 1 Scan183 | |
| Querying the performance of the Hispano front axle, including bearing wear, water protection, and a description of its assembly. | 25th Jun 1924 | Box 22 \ 1 Scan184 | |
| The dispatch of a 'Hispano Pivot' for inspection. | 28th Jun 1924 | Box 22 \ 1 Scan185 | |
| Condition and removal method for pivots on a Hispano car. | 28th Jun 1924 | Box 22 \ 1 Scan186 | |
| Issue of boiling water in the 40/50 HP engine and potential solutions. | 21th Aug 1924 | Box 22 \ 1 Scan187 | |
| List of observations and questions regarding engine cooling, fan performance, and radiator design, with comparisons to a Hispano model. | 21th Aug 1924 | Box 22 \ 1 Scan188 | |
| Engine cooling improvements, comparing radiator design and water circulation with a Hispano engine. | 29th Aug 1924 | Box 22 \ 1 Scan189 | |
| Design and efficiency of car radiators for the 20 HP and 40/50 models. | 29th Aug 1924 | Box 22 \ 1 Scan190 | |
| Engine cooling issues, fan efficiency, bonnet design, and solutions to prevent boiling and water loss. | 22th Sep 1924 | Box 22 \ 1 Scan191 | |
| The heat given to the cooling water of a Hispano engine during a dynamometer test. | 22th Sep 1924 | Box 22 \ 1 Scan192 | |
| Analyzing the thermal efficiency and heat losses of a Hispano engine. | 22th Sep 1924 | Box 22 \ 1 Scan193 | |
| Energy diagram for a Hispano engine, detailing the distribution of heat energy against engine RPM. | 26th Sep 1924 | Box 22 \ 1 Scan194 | |
| Radiator tests conducted on a Hispano car. | 1st Sep 1924 | Box 22 \ 1 Scan195 | |
| The results of radiator tests conducted on a Hispano car. | 22th Sep 1924 | Box 22 \ 1 Scan196 | |
| Table of radiator test results conducted on a Hispano car, with and without the bonnet fitted. | 22th Sep 1924 | Box 22 \ 1 Scan197 | |
| Graph comparing heat flow to jacket water and heat dissipated by radiators for 40/50 HP and Hispano engines. | 22th Sep 1924 | Box 22 \ 1 Scan198 | |
| Graph comparing Heat Transfer Flow at full load for the 40/50 HP and Hispano models. | 22th Sep 1924 | Box 22 \ 1 Scan199 | |
| Leverage fluctuation of square cams in four-wheel brake systems. | 10th Oct 1924 | Box 22 \ 1 Scan200 | |
| Heat flow to jacket water on a Hispano car. | 13th Oct 1924 | Box 22 \ 1 Scan201 | |
| The effect of fuel mixture strength on engine heat flow and power output. | 13th Oct 1924 | Box 22 \ 1 Scan202 | |
| Data tables showing heat flow to jacket water for a Hispano engine under different conditions. | 1st Oct 1924 | Box 22 \ 1 Scan203 | |
| Graph of performance curves for a Hispano car, showing heat flow, horsepower, and fuel consumption against engine RPM. | 1st Oct 1924 | Box 22 \ 1 Scan204 | |
| Graph showing the reduction in heat flow with a richer mixture for a Hispano engine. | 1st Oct 1924 | Box 22 \ 1 Scan205 | |
| Internal order memo for two Ferodo friction discs for a Hispano Car. | 17th Oct 1924 | Box 22 \ 1 Scan206 | |
| Specifying the correct dimensions for Hispano car clutch lining friction discs, referencing a letter from Messrs. Ferodo. | 27th Oct 1924 | Box 22 \ 1 Scan207 | |
| Cooling investigations and radiator tests. | 28th Nov 1924 | Box 22 \ 1 Scan208 | |
| Summary on engine overheating issues at low speeds. | 28th Nov 1924 | Box 22 \ 1 Scan209 | |
| Methods for comparing radiator cooling efficiencies. | 25th Nov 1924 | Box 22 \ 1 Scan210 | |
| Radiator cooling efficiency, referencing Newton's Law of Cooling. | 25th Nov 1924 | Box 22 \ 1 Scan211 | |
| Method for testing radiator cooling performance. | 25th Nov 1924 | Box 22 \ 1 Scan212 | |
| Page summarizing radiator test results, detailing improvements from matrix heights and ventilation. | 25th Nov 1924 | Box 22 \ 1 Scan213 | |
| Vehicle cooling system efficiency, comparing fan and radiator performance. | 25th Nov 1924 | Box 22 \ 1 Scan214 | |
| Comparing the cooling performance of the Hispano and 40/50 HP engines at 20 M.P.H. | 25th Nov 1924 | Box 22 \ 1 Scan215 | |
| Comparing the merits of Hispano and 40/50 type radiator matrices. | 25th Nov 1924 | Box 22 \ 1 Scan216 | |
| With recommendations to reduce vehicle over-heating. | 25th Nov 1924 | Box 22 \ 1 Scan217 | |
| Table evaluating the performance of different radiator matrix heights and depths at a road speed of 30 m.p.h. | 25th Nov 1924 | Box 22 \ 1 Scan218 | |
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