| Description | Date | Identifier | |
| Procedural document outlining the management of blueprints, LOP sheets, records, and the engineering alteration process. | 16th Jun 1938 | Box 127 \ 4 scan0129 | |
| Description of procedures for drawing alterations, arrangements, layouts, and experimental work. | 16th Jun 1938 | Box 127 \ 4 scan0130 | |
| Procedure for 'bought out parts' and observations on the Vauxhall organisation's system. | 16th Jun 1938 | Box 127 \ 4 scan0131 | |
| Letter to A. Taub of Vauxhall Motors regarding crankcase breathing systems, oil sludge, and cylinder bore wear. | 4th Aug 1938 | Box 127 \ 4 scan0132 | |
| Letter from Vauxhall Motors discussing engine ventilation, crankcase fumes, oil leaks, and bore wear. | 8th Aug 1938 | Box 127 \ 4 scan0133 | |
| Power curve data for a 1938 14 HP Vauxhall 1442 c.c. engine. | 14th Oct 1938 | Box 127 \ 4 scan0134 | |
| Comparing the body dimensions of a Vauxhall 10 with a model B.3. | 4th Nov 1938 | Box 127 \ 4 scan0135 | |
| Confirming a phone order from Oscrofts for a Vauxhall 25 HP crankshaft damper and requesting a covering order. | 30th Nov 1938 | Box 127 \ 4 scan0136 | |
| Letter to Vauxhall Motors Ltd. requesting advice on the most satisfactory method of measuring cylinder bore wear. | 27th Jan 1939 | Box 127 \ 4 scan0137 | |
| Letter from Vauxhall Motors Ltd. regarding the methods and indicators used for cylinder bore wear measurements. | 7th Feb 1939 | Box 127 \ 4 scan0138 | |
| Letter to Vauxhall Motors Ltd. regarding instruments for measuring cylinder bore wear and an invitation to visit the Works. | 20th Feb 1939 | Box 127 \ 4 scan0139 | |
| Correspondence from Vauxhall Motors regarding an invitation to visit the works. | 28th Feb 1939 | Box 127 \ 4 scan0140 | |
| Letter to Vauxhall Motors Ltd regarding a delayed works visit by Mr. Robotham. | 1st Mar 1939 | Box 127 \ 4 scan0141 | |
| Letter to A. Taub of Vauxhall Motors proposing a visit from Mr. Salt to discuss fuel consumption and plug gaps. | 1st Jun 1939 | Box 127 \ 4 scan0142 | |
| Letter from Vauxhall Motors Ltd to W.A. Robotham regarding a potential visit and an organization chart. | 7th Jun 1939 | Box 127 \ 4 scan0143 | |
| Letter to A. Taub of Vauxhall Motors Ltd. arranging a visit to discuss induction systems and petrol consumption. | 12th Jun 1939 | Box 127 \ 4 scan0144 | |
| Phone message detailing crown wheel diameters for various Vauxhall models. | 14th Jun 1939 | Box 127 \ 4 scan0145 | |
| Letter to A. Taub of Vauxhall Motors Ltd. cancelling a visit to Luton due to a Board meeting. | 15th Jun 1939 | Box 127 \ 4 scan0146 | |
| Visit to Vauxhall Motors regarding their suspension and shock damper mechanisms. | 19th Jun 1939 | Box 127 \ 4 scan0147 | |
| Improving bump rigs and spring testers, with comparisons to Vauxhall's methods. | 19th Jun 1939 | Box 127 \ 4 scan0148 | |
| General notes on materials like Aeroplastics washers, pith for fuselages, and recommendations for improving testing rigs. | 19th Jun 1939 | Box 127 \ 4 scan0149 | |
| Visit to Vauxhall to observe their latest test equipment and component endurance testing. | 19th Jun 1939 | Box 127 \ 4 scan0150 | |
| Need for more test rigs following a visit to Vauxhalls. | 29th Jun 1939 | Box 127 \ 4 scan0151 | |
| Visit to Vauxhall Motors Ltd. in Luton to review their experimental work on carburation and fuel economy. | 30th Jun 1939 | Box 127 \ 4 scan0152 | |
| Engine distribution, ignition systems, spark plug technology, and vacuum ignition advance mechanisms. | 30th Jun 1939 | Box 127 \ 4 scan0153 | |
| Analysis of factors contributing to improved fuel economy, focusing on ignition systems and carburetter settings. | 30th Jun 1939 | Box 127 \ 4 scan0154 | |
| Page discussing engine misfiring causes, specifically distributor arcing. | 30th Jun 1939 | Box 127 \ 4 scan0155 | |
| Technical findings and observations from a visit to Vauxhall Motors. | 27th Jul 1939 | Box 127 \ 4 scan0156 | |
| Notes on wheel rims, rear axles, tool kits, petrol tanks, and body/frame construction. | 27th Jul 1939 | Box 127 \ 4 scan0157 | |
| Summary of points made by a person named Taub concerning truck engine modifications, wear, oil systems, and transmission issues. | 27th Jul 1939 | Box 127 \ 4 scan0158 | |
| Rear axle assembly undergoing a load test on a rig using stacked weights to measure deflection. | 2nd Nov 1937 | Box 127 \ 4 scan0159 | |
| Request from the Aero Instruction School to borrow latest 12 HP Vauxhall parts for examination and sketching. | 2nd Oct 1939 | Box 127 \ 4 scan0160 | |
| Findings from a visit to Vauxhall, including comparisons of rear dampers and notes on petrol tanks and light wheels. | 23th Oct 1939 | Box 127 \ 4 scan0161 | |
| Findings from a visit to Vauxhall Motors regarding vehicle components and testing methods. | 27th Jul 1939 | Box 127 \ 4 scan0162 | |
| Notes on the design and manufacturing of various car components including wheel rims, axles, petrol tanks, and frames. | 27th Jul 1939 | Box 127 \ 4 scan0163 | |
| Points made by Taub regarding truck engine performance, wear, and oil issues. | 27th Jul 1939 | Box 127 \ 4 scan0164 | |
| Order be sent to Messrs. Oscrofts Ltd. for a Vauxhall 12 rear shock damper. | 24th Oct 1939 | Box 127 \ 4 scan0165 | |
| Credit note from Messrs. G.S. Oscroft & Co. Ltd. for a returned shock absorber. | 28th Nov 1939 | Box 127 \ 4 scan0166 | |
| Confirming the return of a shock absorber to Messrs. Oscroft's. | 29th Nov 1939 | Box 127 \ 4 scan0167 | |
| Confidential memo quoting a letter about spiral gear issues and a related secret engine project. | 29th Nov 1939 | Box 127 \ 4 scan0168 | |
| Method for recording the sideways movement of a rear axle, known as scribbling action. | 2nd Dec 1939 | Box 127 \ 4 scan0169 | |
| Letter from Vauxhall Motors inquiring about gearbox design, specifically regarding direct drive and achieving silence. | 2nd Dec 1939 | Box 127 \ 4 scan0170 | |
| Letter to A. Taub of Vauxhall Motors discussing factors for achieving gearbox silence. | 4th Dec 1939 | Box 127 \ 4 scan0171 | |
| Letter from Vauxhall Motors discussing engine economy, spark plug gaps, and carburettor design. | 7th Dec 1939 | Box 127 \ 4 scan0172 | |
| Letter to Vauxhall Motors requesting particulars of a Strobotac handled by a firm in Liverpool. | 24th Jan 1940 | Box 127 \ 4 scan0173 | |
| Letter to Vauxhall Motors regarding spark plug gaps, lean mixtures, and engine performance. | 8th Feb 1940 | Box 127 \ 4 scan0174 | |
| Letter from Vauxhall Motors to W.A. Robotham regarding engine performance, wide gap plugs, and the Bedford engine. | 13th Feb 1940 | Box 127 \ 4 scan0175 | |
| Letter to A. Taub of Vauxhall Motors regarding Bedford engine data, wide plug gaps and arranging a meeting. | 16th Feb 1940 | Box 127 \ 4 scan0176 | |
| Letter from Vauxhall Motors discussing vehicle testing methodologies, particularly wide gaps and test loads. | 20th Feb 1940 | Box 127 \ 4 scan0177 | |
| Page two of a letter from Alex Taub to W.A. Robotham discussing spark plug gap and positioning. | 20th Feb 1940 | Box 127 \ 4 scan0178 | |
| Letter to Vauxhall Motors listing a series of troubles and repairs for a Bedford vehicle. | 22th Feb 1940 | Box 127 \ 4 scan0179 | |
| Letter discussing remarks on wide plug gaps and arranging a visit to Luton. | 24th Feb 1940 | Box 127 \ 4 scan0180 | |
| Letter from Alex Taub of Vauxhall Motors to W.A. Robotham of Rolls-Royce arranging a meeting. | 24th Feb 1940 | Box 127 \ 4 scan0181 | |
| Letter to A. Taub of Vauxhall Motors Ltd. arranging a visit. | 26th Feb 1940 | Box 127 \ 4 scan0182 | |
| Letter from Vauxhall Motors Ltd to W.A. Robotham confirming a meeting date. | 28th Feb 1940 | Box 127 \ 4 scan0183 | |
| Letter to A. Taub of Vauxhall Motors Ltd. arranging a meeting time. | 1st Mar 1940 | Box 127 \ 4 scan0184 | |
| Notes on a visit to Vauxhall's to discuss current automobile design problems. | 8th Mar 1940 | Box 127 \ 4 scan0185 | |
| Page 2 of a memorandum discussing engine weight, fly-wheel issues, vibrations, and piston design. | 8th Mar 1940 | Box 127 \ 4 scan0186 | |
| Redesign of skew-gear drives for cast-iron camshafts and post-war development. | 8th Mar 1940 | Box 127 \ 4 scan0187 | |
| Notes on a visit to Vauxhall Motors in Luton to discuss experimental work on carburation, ignition, and fuel economy. | 8th Mar 1940 | Box 127 \ 4 scan0188 | |
| Report comparing normal-reach and long-reach spark plugs and their effect on fuel economy (M.P.G.). | 8th Mar 1940 | Box 127 \ 4 scan0189 | |
| Use of extra-long reach spark plugs and investigating ignition deterioration issues. | 8th Mar 1940 | Box 127 \ 4 scan0190 | |
| Potential for improved fuel economy by increasing voltage on a test car. | 8th Mar 1940 | Box 127 \ 4 scan0191 | |
| Letter to A. Taub of Vauxhall Motors regarding a visit to Derby to share information on engine components. | 19th Apr 1940 | Box 127 \ 4 scan0192 | |
| Letter from Vauxhall Motors Ltd to W.A. Robotham regarding progress on an engine project. | 22th Apr 1940 | Box 127 \ 4 scan0193 | |
| Letter from Alex Taub discussing bore wear data and enclosing a related paper. | 24th Apr 1940 | Box 127 \ 4 scan0194 | |
| Letter to A. Taub of Vauxhall Motors regarding a potential visit and engine reliability. | 24th Apr 1940 | Box 127 \ 4 scan0195 | |
| Notification of the purchase of a 1939 Vauxhall 10 HP car for experimental purposes. | 29th Apr 1940 | Box 127 \ 4 scan0196 | |
| Providing a driving impression and comparison of a 1939 Vauxhall De luxe 10/HP Saloon. | 7th May 1940 | Box 127 \ 4 scan0197 | |
| Performance and issue report on various vehicle components including the engine, gearbox, and brakes. | 7th May 1940 | Box 127 \ 4 scan0198 | |
| Vehicle noise and body issues, with suggestions for improvements. | 7th May 1940 | Box 127 \ 4 scan0199 | |
| Technical report detailing sources of noise and other issues within the vehicle body and engine. | 7th May 1940 | Box 127 \ 4 scan0200 | |
| Letter confirming a telephone conversation to arrange a trial run for a 1939 Vauxhall 10-HP car. | 26th Apr 1940 | Box 127 \ 4 scan0201 | |
| Letter from British & Colonial Motors regarding the sale of a Vauxhall '10' and an enclosed order form. | 26th Apr 1940 | Box 127 \ 4 scan0202 | |
| Telegram regarding a delay in sending a Vauxhall due to a staffing issue. | 26th Apr 1940 | Box 127 \ 4 scan0203 | |
| Request to arrange payment of £165 for a Vauxhall 10 HP car for the Experimental Department. | 27th Apr 1940 | Box 127 \ 4 scan0204 | |
| Letter to Mr. J. B. Donaldson regarding a cheque for a 'Vauxhall'. | 29th Apr 1940 | Box 127 \ 4 scan0205 | |
| Follow-up note regarding the payment and invoice for a 10-HP Vauxhall purchased for the Experimental Department. | 2nd May 1940 | Box 127 \ 4 scan0206 | |
| 'with compliments' slip on British & Colonial Motors Limited letterhead. | 4th May 1940 | Box 127 \ 4 scan0207 | |
| Letter to J. B. Donaldson thanking him for the registration book for a Vauxhall vehicle. | 4th May 1940 | Box 127 \ 4 scan0208 | |
| Returning an invoice for a Vauxhall 10 HP Car for signature. | 6th May 1940 | Box 127 \ 4 scan0209 | |
| Signing of an invoice for a Vauxhall 10-HP car and ensuring payment to British & Colonial Motors Ltd. | 7th May 1940 | Box 127 \ 4 scan0210 | |
| Declining the purchase of various 10-HP cars in favour of a Vauxhall 10-HP. | 7th May 1940 | Box 127 \ 4 scan0211 | |
| Secret internal memorandum detailing driving impressions of a 1939 Vauxhall De Luxe 10 HP Saloon. | 7th May 1940 | Box 127 \ 4 scan0212 | |
| Vehicle performance and issue report detailing problems with the engine, exhaust, gearbox, clutch, brakes, axles, and noise levels. | 7th May 1940 | Box 127 \ 4 scan0213 | |
| Vehicle noise and body issues, with potential causes and solutions. | 7th May 1940 | Box 127 \ 4 scan0214 | |
| Vehicle noise, interior discomforts, and mechanical problems. | 7th May 1940 | Box 127 \ 4 scan0215 | |
| Request for a report on potential modifications to improve a 10 HP Vauxhall car. | 13th May 1940 | Box 127 \ 4 scan0216 | |
| Arranging the delivery of a Vauxhall car for a trial at Duffield Bank. | 15th May 1940 | Box 127 \ 4 scan0217 | |
| Letter from Vauxhall Motors Ltd concerning valve spring wire data and testing substitutes for Swedish wire. | 6th Jun 1940 | Box 127 \ 4 scan0218 | |
| Request to order 6 Dunlop or India 5.25 x 16 covers for the 10 HP Vauxhall Experimental car. | 17th Jun 1940 | Box 127 \ 4 scan0219 | |
| Notes on the headings and units for ride and roll rate tests carried out at Vauxhall. | 2nd Jan 1940 | Box 127 \ 4 scan0220 | |
| Report page detailing vehicle suspension and handling characteristics, including ride rates, roll rates, and tyre pressures. | 2nd Jul 1940 | Box 127 \ 4 scan0221 | |
| Technical notes and formulas for calculating vehicle roll rate, anti-roll bar effects, and rolling weight. | 2nd Jul 1940 | Box 127 \ 4 scan0222 | |
| Letter to A. Taub of Vauxhall Motors regarding recent visits, wartime broadcasts, and engine development. | 13th Sep 1940 | Box 127 \ 4 scan0223 | |
| Letter from Vauxhall Motors discussing engine development, including the 'Iron horse' engine's performance and plans for a new C.I. engine. | 17th Sep 1940 | Box 127 \ 4 scan0224 | |
| Letter from Alex Taub referencing the R.A.F. and a quote from Churchill. | 24th Sep 1940 | Box 127 \ 4 scan0225 | |
| Comparing the component weights of Vauxhall, Studebaker, and Opel cars. | 24th Sep 1940 | Box 127 \ 4 scan0226 | |
| Query to Vauxhall Motors regarding the weight of wheels on the 'E' type car. | 21th Sep 1940 | Box 127 \ 4 scan0227 | |
| Request for a detailed drawing of a Vauxhall brake drum and the car's exact weight. | 25th Sep 1940 | Box 127 \ 4 scan0228 | |
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