| Description | Date | Identifier | |
| Customer feedback on a new chassis regarding stiff springs, steering issues, and clutch adjustment. | 8th Oct 1925 | Box 47 \ 1 Scan154 | |
| Letter from Geoffrey Summers detailing issues with a butterfly valve, petrol consumption, and a fierce servo motor. | 12th Oct 1925 | Box 47 \ 1 Scan155 | |
| Recurring nut replacement issue on chassis 88-HG, attributing the problem to poor lubrication. | 12th Oct 1925 | Box 47 \ 1 Scan156 | |
| Steering and clutch issues for chassis 107-MC, owned by G. Summers Esq. | 13th Oct 1925 | Box 47 \ 1 Scan157 | |
| Adjustments to car springs due to a lighter-than-specified body and proposing options based on passenger load. | 14th Oct 1925 | Box 47 \ 1 Scan158 | |
| Cover memo attaching a document from the Paris Depot concerning Chassis No. 22-EU. | 20th Oct 1925 | Box 47 \ 1 Scan159 | |
| Troubleshooting overheating and vibration issues in a 22-EU chassis 'Barker' inside drive Cabriolet. | 16th Oct 1925 | Box 47 \ 1 Scan160 | |
| Engine faults, subsequent repairs, and the results of a post-repair test. | 16th Oct 1925 | Box 47 \ 1 Scan161 | |
| Performance tests, conclusions, and recommendations for the 'Silver Ghost' chassis. | 20th Oct 1925 | Box 47 \ 1 Scan162 | |
| Fitting of a new silencer to Major Hodges' car. | 20th Oct 1925 | Box 47 \ 1 Scan163 | |
| Chassis No. 22-EU for Mr. Soulas, referencing other communications. | 21th Oct 1925 | Box 47 \ 1 Scan164 | |
| Customer's complaint of overheating on Chassis No. 22-EU. | 19th Oct 1925 | Box 47 \ 1 Scan165 | |
| To correct a chassis number that was incorrectly referenced in previous correspondence. | 23th Oct 1925 | Box 47 \ 1 Scan166 | |
| Burnt leather cover on the rear axle brake adjustment for chassis 74-MC, caused by the exhaust cut-out. | 28th Oct 1925 | Box 47 \ 1 Scan167 | |
| Letter to G. Summers Esq. discussing lighter spring options for chassis No. 117-MC. | 27th Oct 1925 | Box 47 \ 1 Scan168 | |
| Response letter addressing issues with steering, gear changes, an exhaust butterfly valve, servo motor, and petrol consumption. | 27th Oct 1925 | Box 47 \ 1 Scan169 | |
| Cover note for a report on testing an anti-freeze mixture on chassis 14-TM. | 16th Nov 1925 | Box 47 \ 1 Scan170 | |
| Correspondence regarding overheating issues and proposed modifications for chassis 14-TM belonging to Don Juan Correa. | 10th Nov 1925 | Box 47 \ 1 Scan171 | |
| With handwritten annotations detailing specifications for a chassis, bonnet, and pistons. | 28th Nov 1928 | Box 47 \ 1 Scan172 | |
| Query regarding potential alterations to an unsatisfactory oil level indicator on chassis 98-MC. | 25th Nov 1925 | Box 47 \ 1 Scan173 | |
| Proposed modifications to Chassis No. 14-TM for customer Juan Correa to address a boiling complaint. | 26th Nov 1925 | Box 47 \ 1 Scan174 | |
| Handling and reporting of complaints for the New Phantom model. | 27th Nov 1925 | Box 47 \ 1 Scan175 | |
| The cooling system on chassis 14-TM for Juan Correa, discussing a proposed axle change. | 27th Nov 1925 | Box 47 \ 1 Scan176 | |
| Fan drive efficiency and bonnet louvres for chassis 14-TM. | 28th Nov 1925 | Box 47 \ 1 Scan177 | |
| Requesting the compilation and tracking of complaints regarding the 'New Phantom' chassis. | 30th Nov 1925 | Box 47 \ 1 Scan178 | |
| List of complaints for the New Phantom model, categorized by fault type. | 30th Nov 1925 | Box 47 \ 1 Scan179 | |
| List of vehicle faults and their associated reference numbers. | 1st Dec 1925 | Box 47 \ 1 Scan180 | |
| Investigations into 'over-oiling' complaints on the New Phantom model. | 1st Dec 1925 | Box 47 \ 1 Scan181 | |
| Issues of over-oiling, noisy tappets, and clutch jaggers. | 12th Jun 1925 | Box 47 \ 1 Scan182 | |
| Issues and investigations into vehicle components including the clutch, exhaust, steering, and engine performance. | 1st Dec 1925 | Box 47 \ 1 Scan183 | |
| Addressing various vehicle issues including brakes, clutch, and steering. | 12th Jun 1925 | Box 47 \ 1 Scan184 | |
| Letter sent to customer Juan Correa for Chassis No. 14-TM. | 1st Dec 1925 | Box 47 \ 1 Scan185 | |
| Letter to a customer in Paris regarding modifications for engine cooling in hot climates. | 1st Dec 1925 | Box 47 \ 1 Scan186 | |
| Letter to a customer regarding the fitting of a louvred bonnet for better performance under special conditions. | 1st Dec 1932 | Box 47 \ 1 Scan187 | |
| The payment of expenses for Chassis 5-MG Barkers Trials. | 3rd Dec 1925 | Box 47 \ 1 Scan188 | |
| Relining the brakes on Chassis 5-MC due to squeaking, in preparation for a Show. | 23th Oct 1925 | Box 47 \ 1 Scan189 | |
| Internal memorandum discussing the process for reporting and handling New Phantom complaints. | 12th Dec 1925 | Box 47 \ 1 Scan190 | |
| Short, handwritten memo note regarding a requested item. | 9th Dec 1925 | Box 47 \ 1 Scan191 | |
| Complaints and a list of troubles related to the New Phantom model. | 9th Dec 1925 | Box 47 \ 1 Scan192 | |
| Collection of complaints raised from various sources regarding the 40/50 HP chassis. | 9th Dec 1925 | Box 47 \ 1 Scan193 | |
| List of observed vehicle faults including issues with engine gears, battery ignition, springing, governor control, acceleration, and brakes. | 9th Dec 1925 | Box 47 \ 1 Scan194 | |
| List of documented vehicle faults and their potential causes, page 3. | 9th Dec 1925 | Box 47 \ 1 Scan195 | |
| List of reported faults and issues with various vehicle components. | 9th Dec 1925 | Box 47 \ 1 Scan196 | |
| List of reported vehicle issues and points for improvement, page 5. | 9th Dec 1925 | Box 47 \ 1 Scan197 | |
| List of engineering notes and customer complaints regarding various car components, including the engine finish, wheels, brakes, and valve failures. | 10th Dec 1925 | Box 47 \ 1 Scan198 | |
| Outlining the procedure for reporting and resolving complaints regarding the New Phantom model. | 10th Dec 1925 | Box 47 \ 1 Scan199 | |
| Cover note regarding complaints about the 'New Phantom' model, attaching a related document. | 9th Dec 1925 | Box 47 \ 1 Scan200 | |
| Complaints regarding the New Phantom model, specifically over-oiling, noisy tappets, and clutch issues. | 3rd Dec 1925 | Box 47 \ 1 Scan201 | |
| Adjustments and improvements for various vehicle components including the clutch, exhaust, steering, and governor control. | 2nd Dec 1925 | Box 47 \ 1 Scan202 | |
| Comparative overheating tests on chassis No. 14-TM. | 9th Dec 1925 | Box 47 \ 1 Scan203 | |
| Requesting confirmation on the axle specification for Mr. Geoffrey Summers' car before forwarding a report. | 11th Dec 1925 | Box 47 \ 1 Scan204 | |
| Cover memo attaching Capt. Strong's report on the New Phantom, chassis 117-MC, owned by Mr. Geoffrey Summers. | 10th Dec 1925 | Box 47 \ 1 Scan205 | |
| Customer feedback on a car, covering issues with the carburettor air valve, piston sticking, fuel consumption, and exhaust explosions. | 7th Dec 1925 | Box 47 \ 1 Scan206 | |
| Owner's feedback regarding a sticking exhaust throttle, various mechanical issues, and vehicle performance comparisons. | 7th Dec 1925 | Box 47 \ 1 Scan207 | |
| Comparison of speed and braking tests between a Rolls-Royce 117-ME and a 30/98 Vauxhall O.E.99. | 7th Dec 1925 | Box 47 \ 1 Scan208 | |
| Performance comparison of maximum speeds and acceleration times for various cars. | 14th Dec 1925 | Box 47 \ 1 Scan209 | |
| Confirming axle ratios and weight for Mr. Geoffrey Summer's Silver Ghost and Phantom cars. | 14th Dec 1925 | Box 47 \ 1 Scan210 | |
| The acceleration performance of Mr. Geoffrey Summers' car, 117-MC, comparing it to a standard Phantom. | 12th Jun 1925 | Box 47 \ 1 Scan211 | |
| And comparing braking figures and gear acceleration for the Phantom model. | 14th Dec 1912 | Box 47 \ 1 Scan212 | |
| Page comparing the acceleration and maximum speeds of Sunbeam and Vauxhall cars. | 14th Dec 1925 | Box 47 \ 1 Scan213 | |
| With graphs comparing the acceleration performance of Phantom and Vauxhall vehicles. | 27th Nov 1925 | Box 47 \ 1 Scan214 | |
| Vehicle acceleration times and braking distances. | 14th Dec 1925 | Box 47 \ 1 Scan215 | |
| Case of premature bearing failure at 12,000 miles and the proposed course of action. | 16th Dec 1925 | Box 47 \ 1 Scan216 | |
| Investigation and repair of severe engine knocks on chassis 57-S-6, identifying slack bearings and a loose flywheel as the causes. | 30th Nov 1925 | Box 47 \ 1 Scan217 | |
| Excessive slack and bearing issues on Chassis No. 57-S-S. | 10th Dec 1925 | Box 47 \ 1 Scan218 | |
| Slack bearings on chassis 57-S-S and earlier 20-HP cars. | 15th Dec 1925 | Box 47 \ 1 Scan219 | |
| Customer's complaint about squeaking brakes on chassis 112-EU. | 16th Dec 1925 | Box 47 \ 1 Scan220 | |
| Standardization of metal shields for rear brake countershafts on chassis 112-RC. | 17th Dec 1925 | Box 47 \ 1 Scan221 | |
| Squeaking brakes on Chassis 112-EU for customer R.G. Taylor Esq. | 18th Dec 1925 | Box 47 \ 1 Scan222 | |
| Resolving a squeaking rear brake issue on Chassis 112-EU for customer R.G. Taylor. | 1st Jan 1926 | Box 47 \ 1 Scan223 | |
| Complaint of rattling controls in the New Phantom steering column, with suggestions for an anti-rattle device. | 23th Jan 1926 | Box 47 \ 1 Scan224 | |
| Letter received from the owner of chassis number 117-MC. | 25th Jan 1926 | Box 47 \ 1 Scan225 | |
| Customer letter detailing engine performance issues and suggestions for chassis 117-MC. | 23th Jan 1926 | Box 47 \ 1 Scan226 | |
| The conclusion of a letter from an enthusiast and engineer expressing admiration and a thirst for information. | 25th Jan 1928 | Box 47 \ 1 Scan227 | |
| Customer complaint about the springing on chassis 117-MC and arranging an expert visit. | 26th Jan 1926 | Box 47 \ 1 Scan228 | |
| Recurring clutch issue, described as 'jaggers', on trials car chassis no. 118-MC. | 26th Jan 1926 | Box 47 \ 1 Scan229 | |
| The Experimental Department responding to Mr. Geoffrey Summers' queries about engine performance issues. | 26th Jan 1926 | Box 47 \ 1 Scan230 | |
| Comparative analysis of spring arrangements between the New Phantom, 20 HP. Rolls-Royce, and the 20 HP. Lanchester. | 27th Jan 1926 | Box 47 \ 1 Scan231 | |
| Comparison of suspension characteristics between the New Phantom and 20 HP models, with reference to the Lanchester. | 6th Feb 1926 | Box 47 \ 1 Scan232 | |
| Short memo regarding a car trial and enclosing a report for Geoffrey Summers Esq. | 6th Feb 1926 | Box 47 \ 1 Scan233 | |
| Extract from a memo regarding feedback on a report for Chassis 117-MC and its testing at the Works. | 5th Feb 1926 | Box 47 \ 1 Scan234 | |
| Visit to Mr. Geoffrey Summers regarding springing issues with his 'New Phantom' 117-MC. | 4th Feb 1926 | Box 47 \ 1 Scan235 | |
| Mr. Summers' complaints regarding the springing and engine performance of his Phantom car. | 14th Feb 1926 | Box 47 \ 1 Scan236 | |
| Customer's (Mr. Summers) complaints and requests for modifications regarding engine performance, steering, and suspension. | 4th Feb 1926 | Box 47 \ 1 Scan237 | |
| Customer complaints regarding springing, steering, and various engine issues, with notes on potential solutions. | 4th Feb 1926 | Box 47 \ 1 Scan238 | |
| Various vehicle faults and customer complaints for a specific car. | 4th Feb 1926 | Box 47 \ 1 Scan239 | |
| Customer's complaints about brake issues and dissatisfaction with car performance. | 10th Feb 1926 | Box 47 \ 1 Scan240 | |
| Customer complaint and recommended modifications for Chassis No. 117-MC. | 10th Feb 1926 | Box 47 \ 1 Scan241 | |
| Visit to Mr. Geoffrey Summers regarding springing and handling issues with his New Phantom 117-MC. | 4th Feb 1926 | Box 47 \ 1 Scan242 | |
| Mr. Summers' complaints regarding his Phantom car's springing and engine performance compared to his old Silver Ghost. | 4th Feb 1926 | Box 47 \ 1 Scan243 | |
| Customer's complaints regarding steering, vibrations, and high-speed handling, with proposed actions. | 4th Feb 1926 | Box 47 \ 1 Scan244 | |
| Customer complaints from Mr. Summers and the planned work on his vehicle. | 4th Feb 1926 | Box 47 \ 1 Scan245 | |
| Various mechanical faults and owner complaints for a vehicle. | 4th Feb 1926 | Box 47 \ 1 Scan246 | |
| Follow-up report concerning a customer, Mr. Summers, his car, and potential resolutions. | 4th Feb 1926 | Box 47 \ 1 Scan247 | |
| The rear springing and tyres of the 7-EX R&S car at Le Canadel, suggesting improvements with semi-balloon tyres and hydraulic shock dampers. | 4th Feb 1926 | Box 47 \ 1 Scan248 | |
| Feedback and suggestions for Chassis No.117-MC belonging to Geoffrey Summers. | 5th Feb 1926 | Box 47 \ 1 Scan249 | |
| Conditional fitting of a new type silencer to a New Phantom Car, 33-MC, for Mr. Harrison. | 1st Feb 1926 | Box 47 \ 1 Scan250 | |
| Responding to complaints about steering and shock absorbers for Mr. Geoffrey Summers' car. | 11th Feb 1926 | Box 47 \ 1 Scan251 | |
| Recommendations for plugs and front wheel brake lubrication for chassis 117-MC. | 12th Feb 1926 | Box 47 \ 1 Scan252 | |
| Cover note from CJ enclosing a copy of a letter from Lord Montagu of Beaulieu for remarks. | 2nd Feb 1926 | Box 47 \ 1 Scan253 | |
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