| Description | Date | Identifier | |
| Table listing the chassis, body, and total weights of various experimental and production vehicles. | 25th Mar 1931 | Box 107 \ 4 scan0107 | |
| Front and rear chassis weights for the L.H. Phantom II and 20/25-HP models. | 25th Mar 1931 | Box 107 \ 4 scan0108 | |
| Weight and axle ratio of the 20-G4 car and its effect on acceleration. | 18th Dec 1931 | Box 107 \ 4 scan0109 | |
| Query regarding the specific weight of a car's body and chassis, requesting details on what is included in the measurement. | 23th Dec 1931 | Box 107 \ 4 scan0110 | |
| Breakdown of weights for chassis 20-GIV, its body, and various components. | 28th Dec 1931 | Box 107 \ 4 scan0111 | |
| Request for the estimated weight of the 20-G-4 chassis ('U' series) and its resultant body weight. | 20th Jan 1932 | Box 107 \ 4 scan0112 | |
| Breakdown of the weights for the 20.G.IV model, including complete vehicle, body, and chassis. | 22th Jan 1932 | Box 107 \ 4 scan0113 | |
| Weight of the body on model 20.G.4, with a breakdown of special feature weights. | 2nd Feb 1932 | Box 107 \ 4 scan0114 | |
| Weight reduction of the J.3 engine unit compared to the standard 20/25. | 18th Feb 1932 | Box 107 \ 4 scan0115 | |
| Comparing the weight of the J.3 unit to the standard 20/25 engine, noting a significant weight saving. | 20th Feb 1932 | Box 107 \ 4 scan0116 | |
| Calculating the body weight of the 20-GIV model, itemising additions and subtractions to the standard chassis. | 22th Feb 1932 | Box 107 \ 4 scan0117 | |
| Clarifying the calculation of body weight by accounting for spares, accessories, and petrol tanks. | 22th Feb 1932 | Box 107 \ 4 scan0118 | |
| Chassis weight specifications for 1. J.111 with a full petrol tank. | 30th Mar 1932 | Box 107 \ 4 scan0119 | |
| Increased weight of a Synchro Mesh 20/25 component and the associated material cost. | 25th Apr 1932 | Box 107 \ 4 scan0120 | |
| The increased weight of the new 20/25 HP Car with Synchro Mesh compared to the previous chassis. | 22th Apr 1932 | Box 107 \ 4 scan0121 | |
| Request for the weight of J.III complete with body, with the resulting weight noted in handwriting. | 20th Jul 1932 | Box 107 \ 4 scan0122 | |
| The complete body weight figures for project J.III. | 22th Jul 1932 | Box 107 \ 4 scan0123 | |
| List detailing the weights of various valves for J.III type dampers. | 23th Jan 1933 | Box 107 \ 4 scan0124 | |
| Weight comparison table for various configurations of the 20/25 Frame and J.3 Frame. | 5th Jan 1934 | Box 107 \ 4 scan0125 | |
| The weights of various 20/25 HP chassis models for the last and present quarters. | 5th Jan 1934 | Box 107 \ 4 scan0126 | |
| Vehicle weight comparisons, the need for weight reduction, and other design concerns. | 5th May 1934 | Box 107 \ 4 scan0127 | |
| Fitting of lamps on sports cars and considering future design trends from General Motors. | 3rd May 1934 | Box 107 \ 4 scan0128 | |
| The weight increase of the 20/25 chassis from its introduction in 1929 to the date of the memo. | 7th May 1934 | Box 107 \ 4 scan0129 | |
| Weight comparison for 20/25 HP Gear Box Castings made from Magnesium and Aluminium. | 3rd Aug 1934 | Box 107 \ 4 scan0130 | |
| Request to the Erecting Shop to weigh components for the Ph.II, 20/25 HP, and Bentley chassis. | 3rd Oct 1934 | Box 107 \ 4 scan0131 | |
| Requesting the weighing of non-standard components before fitting to the chassis to monitor and reduce weight. | 29th Oct 1934 | Box 107 \ 4 scan0132 | |
| The original and reduced weights of a Dropped Cross Member. | 12th Nov 1934 | Box 107 \ 4 scan0133 | |
| List comparing the weights of different types of dynamos. | 8th Mar 1935 | Box 107 \ 4 scan0134 | |
| Weight specification sheet for car GUB-5, detailing total, chassis, and body weights in various units. | 8th Mar 1935 | Box 107 \ 4 scan0135 | |
| Table of revised matrix weights and specifications for various models. | 25th Mar 1935 | Box 107 \ 4 scan0136 | |
| The weights of 20/25 HP chassis for the previous and present quarters. | 4th Jul 1935 | Box 107 \ 4 scan0137 | |
| Table of revised matrix weights and dimensions for various models. | 16th Apr 1935 | Box 107 \ 4 scan0138 | |
| Comparison of component weights for Ph.III, 20/25, Bentley, and Buick chassis. | 11th Feb 1936 | Box 107 \ 4 scan0139 | |
| Comparative table of weights for various car sections across different models. | 11th Feb 1936 | Box 107 \ 4 scan0140 | |
| Comparative table of weights for various car components across different vehicle models. | 11th Feb 1936 | Box 107 \ 4 scan0141 | |
| Table comparing the weights of components for different car models including Phantom III, 20/25, Bentley, and Buick. | 11th Feb 1936 | Box 107 \ 4 scan0142 | |
| Comparative table of steering component weights for various chassis models. | 31th Mar 1936 | Box 107 \ 4 scan0143 | |
| And comparing the weights of two 20/25 HP cars, GLG-5 and GLG-2, proposing an investigation into the weight discrepancy. | 8th Apr 1936 | Box 107 \ 4 scan0144 | |
| Increase in weight of a 20/25 HP car, citing engine changes and modern body design requirements as causes. | 27th Apr 1936 | Box 107 \ 4 scan0145 | |
| Internal request for the weight of a 22 G.5 car with a Thrupp & Maberly body for comparison with the Wraith II. | 1st May 1936 | Box 107 \ 4 scan0146 | |
| Weight analysis document for model 22-G-V, detailing total car, chassis, and coachwork weights. | 5th May 1936 | Box 107 \ 4 scan0147 | |
| Comparison table of engine unit weights in pounds for various models. | 5th May 1936 | Box 107 \ 4 scan0148 | |
| Cost and weight comparison between an aluminium monoblock and an existing cast iron engine unit. | 24th Mar 1937 | Box 107 \ 4 scan0149 | |
| List of weights in pounds for various components of 1937 Buick models, series 40, 60, 80, and 90. | 24th Mar 1937 | Box 107 \ 4 scan0150 | |
| Weight comparison sheet for the 25/30 and Wraith chassis models. | 30th Aug 1938 | Box 107 \ 4 scan0151 | |
| Weight calculation memorandum regarding a change in gauge frame for the Wraith model. | 30th Aug 1938 | Box 107 \ 4 scan0152 | |
| Breakdown of the Wraith chassis and accessory weights. | 30th Aug 1938 | Box 107 \ 4 scan0153 | |
| The failure of 20 HP wing stays during testing. | 1st Aug 1925 | Box 107 \ 4 scan0154 | |
| Inquiry about sourcing replacement front wings for a 20 HP 'India' chassis with a Windover body after 20,000 miles of use. | 28th Sep 1925 | Box 107 \ 4 scan0155 | |
| Telegram received by telephone concerning wings for various car bodies. | 1st Oct 1925 | Box 107 \ 4 scan0156 | |
| Confirmation of telegram correspondence regarding the production and dispatch of front wings. | 1st Oct 1925 | Box 107 \ 4 scan0157 | |
| The failure of step irons and front mud-guard stays on 20 HP and 40/50 HP models. | 1st Feb 1926 | Box 107 \ 4 scan0158 | |
| Requirement of a chassis for a Saloon Cab De Ville body nearing completion at Hoopers for India. | 26th Mar 1927 | Box 107 \ 4 scan0159 | |
| Change in the factory process for fitting 20-HP Chassis front wing irons due to customisation difficulties. | 31th May 1927 | Box 107 \ 4 scan0160 | |
| Unsuitability of standard wings when fitting 19' rims to a 20 HP model. | 19th Jul 1927 | Box 107 \ 4 scan0161 | |
| Part number changes and experimental fitting of mudwings for a 20-HP chassis. | 12th Aug 1927 | Box 107 \ 4 scan0162 | |
| The replacement of experimental front mudwing stays with new designs for the 20-HP chassis. | 22th Aug 1927 | Box 107 \ 4 scan0163 | |
| The standardisation of sheet steel wing stays and the mounting of headlamps. | 21th Nov 1927 | Box 107 \ 4 scan0164 | |
| Front and rear wheel clearances for the 'India 3' model with specific instructions for the Derby facility. | 26th Jun 1928 | Box 107 \ 4 scan0165 | |
| Specifications for body brackets, step irons, and side levers for the India 3 model. | 26th Jun 1928 | Box 107 \ 4 scan0166 | |
| Wheel carrier and step brackets for the first car. | 5th Jul 1928 | Box 107 \ 4 scan0167 | |
| Resetting intermediate and rear step irons, and a proposal to increase their length. | 5th Jul 1928 | Box 107 \ 4 scan0168 | |
| Outlining the specifications and schedule for fitting a Barkerlite Coupe body onto the India 3 chassis for Mr. Royce. | 7th Jul 1928 | Box 107 \ 4 scan0169 | |
| Letter from coachbuilders Barker & Co. confirming that parts for Mr. Royce's 20HP F.C. Coupe are ready for collection. | 11th Jul 1928 | Box 107 \ 4 scan0170 | |
| Reduction of wheel arch height for a 20 HP model with 5¼ inch tyres and 21 inch rims. | 8th Aug 1928 | Box 107 \ 4 scan0171 | |
| Buffer penetration tests and wheel arch sizes for different tyres. | 23th Aug 1928 | Box 107 \ 4 scan0172 | |
| Front wings without a mud-lip, which results in mud spraying onto the car body and windscreen. | 31th Aug 1928 | Box 107 \ 4 scan0173 | |
| Absence of mud-lips on front wings and proposing a modification. | 3rd Sep 1928 | Box 107 \ 4 scan0174 | |
| Outlining specifications for front wings, headlamps, and wheel carriers for the India 4 model. | 30th Nov 1928 | Box 107 \ 4 scan0175 | |
| Valances and steps for a 14.G.4. Sedanca model. | 30th Nov 1928 | Box 107 \ 4 scan0176 | |
| Required modifications and discovered issues for a Hooper Sedanca, chassis 14-G-4. | 18th Dec 1928 | Box 107 \ 4 scan0177 | |
| Failure of front wing stays on car 14-G-4, attributing it to abnormal fatigue from excessive twisting. | 1st Aug 1929 | Box 107 \ 4 scan0178 | |
| Letter to Hooper & Co. Ltd. requesting a new pair of front wings for a Sedanca 14-G-1V. | 8th Feb 1929 | Box 107 \ 4 scan0179 | |
| Letter from coachbuilder Hooper & Co. regarding the manufacture and dispatch of a pair of front wings for a Sedanca car. | 9th Feb 1929 | Box 107 \ 4 scan0180 | |
| Order to be placed with Messrs. Hooper & Co. for front wings for a Sedanca car. | 11th Feb 1929 | Box 107 \ 4 scan0181 | |
| Letter from coachbuilder Hooper & Co. confirming the dispatch of two wings and apologizing for a delayed response regarding a Sedanca. | 15th Feb 1929 | Box 107 \ 4 scan0182 | |
| Gauge of wing stays and the design of head-lamp brackets for P.2 and 20/25 HP models. | 12th Apr 1930 | Box 107 \ 4 scan0183 | |
| Modifying wing stays for the 20/25 HP chassis and removing the lamp as the cause of trouble. | 14th Apr 1930 | Box 107 \ 4 scan0184 | |
| Modifications to wing stays for the 20/25 HP model. | 15th Apr 1930 | Box 107 \ 4 scan0185 | |
| Revised wingstays, crossmembers, and lamp brackets for the 20/25 HP model. | 24th Apr 1930 | Box 107 \ 4 scan0186 | |
| Decision to provide two-wire instead of three-wire concealed wiring for the lamps on the 20/25 HP chassis. | 3rd May 1930 | Box 107 \ 4 scan0187 | |
| Sending a chassis for approval of a Phantom II type head-lamp bracket on a 20/25 HP chassis. | 23th Jun 1930 | Box 107 \ 4 scan0188 | |
| Extract from a report on tests of completed cars regarding unsatisfactory wing stays and headlamps. | 26th Jun 1930 | Box 107 \ 4 scan0189 | |
| Providing feedback on the design of headlamp brackets and wing stays for the 20/25 HP model. | 26th Jun 1930 | Box 107 \ 4 scan0190 | |
| Extract from a report on tests of completed cars, concerning new headlamp brackets for the 'S' series chassis. | 5th Jul 1930 | Box 107 \ 4 scan0191 | |
| The significant costs associated with a new design of Front Wing Stays for the 20 HP Chassis. | 22th Aug 1930 | Box 107 \ 4 scan0192 | |
| Cost of cancelling an order for Mudwing Stays and Stiffeners for the 20/25-HP Chassis 'S' Series. | 9th Sep 1930 | Box 107 \ 4 scan0193 | |
| Introduction of new front wing stays for the 20/25 HP chassis. | 11th Sep 1930 | Box 107 \ 4 scan0194 | |
| Standardisation of headlamps and the use of existing 20/25 HP wing stays. | 11th Sep 1930 | Box 107 \ 4 scan0195 | |
| Standardisation of chassis parts for headlamps and stronger wing stays to improve the 'jellying' on the front of the car. | 30th Jun 1930 | Box 107 \ 4 scan0196 | |
| Usage and testing arrangements for the 32-EX and Wraith cars. | 15th Jul 1937 | Box 108 \ 1 scan0001 | |
| Instructions for mounting a new HP pump to a 10,000 Miles Chassis. | 15th Jul 1937 | Box 108 \ 1 scan0002 | |
| The parallel petrol pump configuration for a Wraith 26-G-VI chassis. | 16th Jul 1937 | Box 108 \ 1 scan0003 | |
| Telegram requesting a room reservation at the East Kent Arms in Folkestone. | 21th Jul 1937 | Box 108 \ 1 scan0004 | |
| On the initial testing of the first Wraith car in France, focusing on performance and engine roughness. | 24th Jul 1937 | Box 108 \ 1 scan0005 | |
| Noisy high-pressure pump on a Wraith engine. | 26th Jul 1937 | Box 108 \ 1 scan0006 | |
| Electrical fault where the main switch fails to cut power to certain components on a Wraith model. | 26th Jul 1937 | Box 108 \ 1 scan0007 | |
| Noisy fan and stretched drive belt for a Wraith model, requesting new parts. | 26th Jul 1937 | Box 108 \ 1 scan0008 | |
| The difficulty of using the starting handle on a Wraith model due to crankshaft misalignment. | 26th Jul 1937 | Box 108 \ 1 scan0009 | |
| Routine inspection of the poundage on cross steering tube joints for a Wraith model. | 26th Jul 1937 | Box 108 \ 1 scan0010 | |
| | | | |
