| Description | Date | Identifier | |
| Development of a sports model and the risks associated with high-speed chassis. | 1st May 1927 | Box 70 \ 1 scan0245 | |
| Development of a 'Blue Semi-Sports' car and the feasibility of a 100 MPH special chassis. | 29th Nov 1926 | Box 70 \ 1 scan0246 | |
| Letter to Barkers coachbuilders regarding the collection of a front wing from the 10-EX experimental car. | 7th May 1927 | Box 70 \ 1 scan0247 | |
| To fit a Sch.751 water pump and magnesium pedestal pistons to car 10-EX. | 24th May 1927 | Box 70 \ 1 scan0248 | |
| Remarks on the car's steps and the possibility of sending a sketch for an improved design. | 20th May 1927 | Box 70 \ 1 scan0249 | |
| List of proposed modifications and completions for the 10-EX car. | 20th May 1927 | Box 70 \ 1 scan0250 | |
| Diagram and notes concerning the undershield for the 10-EX model. | 20th May 1927 | Box 70 \ 1 scan0251 | |
| Diagram illustrating a dash support for a steering column. | 21th Jun 1927 | Box 70 \ 1 scan0252 | |
| Using graphite grease on butterfly valves and vehicle arrangements. | 21th Jun 1927 | Box 70 \ 1 scan0253 | |
| Request to prepare two louvred side panels for the bonnet of the 10-EX car. | 25th Jun 1927 | Box 70 \ 1 scan0254 | |
| File cover for a section on customer complaints. | 8th May 1925 | Box 70 \ 3 scan0001 | |
| Internal memorandum regarding the tracking of complaints for the 'New Phantom' model. | 30th Nov 1925 | Box 70 \ 3 scan0002 | |
| Extract from a list of customers' complaints regarding specific vehicle components. | 30th Nov 1925 | Box 70 \ 3 scan0003 | |
| Electrical complaints for the New Phantom model. | 15th Dec 1925 | Box 70 \ 3 scan0004 | |
| List of complaints and resolutions regarding the New Phantom model, covering issues with starters, dynamos, and platinum points. | 6th Jan 1926 | Box 70 \ 3 scan0005 | |
| Requesting more detailed technical information on customer complaints, particularly regarding ignition coil failures. | 16th Dec 1927 | Box 70 \ 3 scan0006 | |
| Clarifying which faulty electrical parts should be sent for inspection. | 27th Feb 1928 | Box 70 \ 3 scan0007 | |
| Requesting that electrical units with non-obvious failures be sent to the Electrical Experimental Department for inspection. | 9th Oct 1929 | Box 70 \ 3 scan0008 | |
| Procedure for handling failures of electrical units from customer vehicles. | 12th Nov 1929 | Box 70 \ 3 scan0009 | |
| From EFC to Mr. Hubbard regarding the failure of headlamps on chassis 106-XJ due to an unsuitable foot switch. | 5th May 1930 | Box 70 \ 3 scan0010 | |
| Chassis troubles and customer complaints regarding H.T. Wiring Tubes on the Phantom II model. | 7th Nov 1930 | Box 70 \ 3 scan0011 | |
| Monthly report detailing repairs for various automotive components for March 1931. | 15th May 1931 | Box 70 \ 3 scan0012 | |
| Continued list of component issues including a solder run, overhaul, and noisy bearings. | 15th May 1931 | Box 70 \ 3 scan0013 | |
| Monthly repair log from April 1931, detailing the status of various electrical components. | 15th May 1931 | Box 70 \ 3 scan0014 | |
| Overhaul and repair status of various dynamos and motors. | 15th May 1931 | Box 70 \ 3 scan0015 | |
| Log of repairs received for dynamos and coils during May 1931. | 2nd Jun 1931 | Box 70 \ 3 scan0016 | |
| Log of test results and repairs for coils and starter motors, listed by chassis and unit number. | 2nd Jun 1931 | Box 70 \ 3 scan0017 | |
| Overhaul and repair work on various vehicle components. | 8th Jul 1931 | Box 70 \ 3 scan0018 | |
| Repairs for 20 HP Starter Motors and Dynamos for June 1931. | 8th Jul 1931 | Box 70 \ 3 scan0019 | |
| Log of electrical component statuses and overhauls. | 8th Jul 1931 | Box 70 \ 3 scan0020 | |
| List of component test results and statuses, identified by alphanumeric codes. | 8th Jul 1931 | Box 70 \ 3 scan0021 | |
| List of repairs received for various electrical components during July 1931. | 7th Aug 1931 | Box 70 \ 3 scan0022 | |
| List of component faults and service actions for various automotive parts, continued on page 2. | 7th Aug 1931 | Box 70 \ 3 scan0023 | |
| List detailing the test results and faults of various ignition coils. | 4th Sep 1931 | Box 70 \ 3 scan0024 | |
| List of repairs for starter motors, distribution boards, switch boxes, and starter switches for the month of August 1931. | 4th Sep 1931 | Box 70 \ 3 scan0025 | |
| Status and issues found with ignition coils and 20 HP dynamos. | 4th Sep 1931 | Box 70 \ 3 scan0026 | |
| Status report on various dynamos, detailing actions taken such as overhauls, adjustments, and repairs. | 4th Sep 1931 | Box 70 \ 3 scan0027 | |
| Monthly report detailing repairs on various motor components for September 1931. | 8th Oct 1931 | Box 70 \ 3 scan0028 | |
| Log detailing faults and test results for 20 HP dynamos and coils. | 8th Oct 1931 | Box 70 \ 3 scan0029 | |
| Test report detailing the status and faults of various ignition coils. | 8th Oct 1931 | Box 70 \ 3 scan0030 | |
| Dynamo repairs for the month ending 31.10.31. | 10th Nov 1931 | Box 70 \ 3 scan0031 | |
| List of faults, modifications, and repairs for various electrical components. | 10th Nov 1931 | Box 70 \ 3 scan0032 | |
| List of ignition coils with their corresponding test results and faults. | 25th Jan 1928 | Box 70 \ 3 scan0033 | |
| The overload specifications for a chassis ammeter, requiring it to withstand 90 amperes. | 25th Jan 1928 | Box 70 \ 3 scan0034 | |
| Battery and dynamo issues on 40/50HP & 20-HP chassis models. | 25th Nov 1925 | Box 70 \ 3 scan0035 | |
| Battery charging difficulties in 40/50 HP and 20 HP chassis models. | 30th Nov 1925 | Box 70 \ 3 scan0036 | |
| Continued memorandum requesting that useful information be forwarded for driver training. | 30th Nov 1925 | Box 70 \ 3 scan0037 | |
| Insufficient dynamo output on 20 HP chassis and battery electrolyte loss. | 1st Dec 1925 | Box 70 \ 3 scan0038 | |
| Complaints of undercharging batteries and melting dynamos on 20 HP cars. | 1st Dec 1925 | Box 70 \ 3 scan0039 | |
| Battery and dynamo issues, discussing charging problems and control brush failures. | 30th Nov 1925 | Box 70 \ 3 scan0040 | |
| Owner maintenance practices and issues related to batteries and dynamos on 40/50 HP & 20 HP chassis. | 4th Dec 1925 | Box 70 \ 3 scan0041 | |
| Requesting an update on the position regarding customer complaints about standard Watford magnetos. | 26th Nov 1925 | Box 70 \ 3 scan0042 | |
| Examination of a faulty P. & R. Battery from chassis 36-HC, returned from Paris due to a suspected internal short-circuit. | 5th Mar 1926 | Box 70 \ 3 scan0043 | |
| Complaints regarding P.& R. batteries for 20 HP & 40/50 HP chassis. | 30th Mar 1926 | Box 70 \ 3 scan0044 | |
| Letter to Messrs Peto & Radford concerning unsatisfactory battery repair reports and the lack of detail provided. | 26th Mar 1926 | Box 70 \ 3 scan0045 | |
| Page two of a letter requesting fuller information be afforded from a repair depot. | 29th Mar 1926 | Box 70 \ 3 scan0046 | |
| Copy of a letter from Peto & Radford regarding a disputed battery repair for chassis 47G5. | 29th Mar 1926 | Box 70 \ 3 scan0047 | |
| The examination, fault diagnosis, and proposed dispatch of a P & R battery from chassis 36-HC. | 16th Apr 1926 | Box 70 \ 3 scan0048 | |
| Test report on a faulty P & R battery from chassis 36-HC. | 15th Apr 1926 | Box 70 \ 3 scan0049 | |
| Letter to Messrs. Peto & Radford regarding a customer complaint about a New Phantom P & R battery requiring frequent topping up. | 15th Oct 1926 | Box 70 \ 3 scan0050 | |
| Serious condition of a customer's car battery and its replacement. | 18th Oct 1926 | Box 70 \ 3 scan0051 | |
| Letter from Peto & Radford concerning battery filling issues and vent thread problems. | 18th Oct 1926 | Box 70 \ 3 scan0052 | |
| Letter from Peto & Radford responding to a complaint about battery lids and suggesting modifications. | 18th Oct 1926 | Box 70 \ 3 scan0053 | |
| Letter to a supplier regarding a customer's battery complaint and experiments on an automatic charging device. | 19th Oct 1926 | Box 70 \ 3 scan0054 | |
| Letter from accumulator manufacturers Peto & Radford regarding the return of a battery for special attention. | 20th Oct 1926 | Box 70 \ 3 scan0055 | |
| The free-of-charge repair of an unsatisfactory 40/50 HP P & R Battery. | 21th Oct 1926 | Box 70 \ 3 scan0056 | |
| Seeking instructions on how to proceed with a customer's P & R battery that was replaced. | 10th Nov 1926 | Box 70 \ 3 scan0057 | |
| Letter from battery supplier Peto & Radford concerning a disputed faulty battery and offering a replacement. | 9th Nov 1926 | Box 70 \ 3 scan0058 | |
| Letter from Peto & Radford reporting a faulty battery and requesting replacement instructions. | 9th Nov 1926 | Box 70 \ 3 scan0059 | |
| Correspondence concerning a faulty battery for chassis 1-SC and its replacement. | 15th Nov 1926 | Box 70 \ 3 scan0060 | |
| Extract from a customer's letter regarding the condition and maintenance of a Peto and Radford battery on a Phantom 1-SC. | 16th Nov 1926 | Box 70 \ 3 scan0061 | |
| Letter regarding a damaged battery and an agreement for its free repair and replacement. | 16th Nov 1926 | Box 70 \ 3 scan0062 | |
| Letter from accumulator manufacturer Peto & Radford regarding a free-of-charge battery repair. | 17th Nov 1926 | Box 70 \ 3 scan0063 | |
| Recurring Exide battery failures on various chassis. | 3rd Dec 1928 | Box 70 \ 3 scan0064 | |
| Faulty 12-volt battery for chassis 37-RC, including a report from the manufacturer The Chloride Electrical Storage Co. Ltd. | 16th Oct 1926 | Box 70 \ 3 scan0065 | |
| Examination of a returned defective 12-volt Exide battery from chassis No.76-HC. | 13th Oct 1926 | Box 70 \ 3 scan0066 | |
| Requesting the return of an Exide battery from chassis 25MC (Lord Rochdale) for examination. | 3rd Dec 1926 | Box 70 \ 3 scan0067 | |
| Instruction to the Experimental Department to receive a 12V Exide battery for examination. | 4th Dec 1926 | Box 70 \ 3 scan0068 | |
| The re-test of an Exide battery from chassis 25MC. | 9th Dec 1926 | Box 70 \ 3 scan0069 | |
| Battery failures, vague reports from the Exide Co., and offering further examination. | 15th Dec 1926 | Box 70 \ 3 scan0070 | |
| The examination and testing of a 40/50 Exide battery from chassis 25-MC for Lord Rochdale. | 15th Dec 1926 | Box 70 \ 3 scan0071 | |
| Concluding statement regarding the responsibility of battery makers for a specific treatment. | 15th Dec 1926 | Box 70 \ 3 scan0072 | |
| Cause of an Exide battery leaking acid on chassis 1SC, attributing it to overcharging and suggesting remedies. | 9th Jun 1927 | Box 70 \ 3 scan0073 | |
| Batteries dealt with by the Repair Department during June, July and August. | 5th Sep 1927 | Box 70 \ 3 scan0074 | |
| Letter regarding a P. & R. battery on chassis 41-LC, and an attached analysis of batteries from the Repair Dept. | 29th Sep 1927 | Box 70 \ 3 scan0075 | |
| Details on battery failures for 40/50 and 20 HP models. | 4th Oct 1927 | Box 70 \ 3 scan0076 | |
| Leaking acid from Exide batteries on Phantom chassis, quoting a customer complaint and the manufacturer's response. | 30th Apr 1928 | Box 70 \ 3 scan0077 | |
| Diagnosing the cause of acid spraying from an Exide battery on a Phantom Chassis. | 3rd May 1928 | Box 70 \ 3 scan0078 | |
| Faulty Exide battery from chassis 48-YC, suggesting the cause is over-filling and over-charging. | 8th Jun 1928 | Box 70 \ 3 scan0079 | |
| Letter from a battery supplier about complaints of acid leaking from the vent plugs of Exide batteries fitted to cars in Australia. | 21th Jun 1928 | Box 70 \ 3 scan0080 | |
| Letter from a battery supplier discussing potential causes for acid leakage, such as over-filling or sulphation. | 21th Jun 1928 | Box 70 \ 3 scan0081 | |
| Letter to a battery supplier regarding poor quality screw threads on vent plugs for 40/50 HP car batteries. | 5th Jul 1928 | Box 70 \ 3 scan0082 | |
| Extract of a letter from Mr. Minchin regarding a problem with vent plugs. | 7th Jul 1928 | Box 70 \ 3 scan0083 | |
| Extract from a letter from M/S Peto & Radford regarding an issue with loose vents and nuts on terminal pillars. | 26th Jul 1928 | Box 70 \ 3 scan0084 | |
| The risks and benefits of using a two-battery system in parallel. | 22th Jan 1929 | Box 70 \ 3 scan0085 | |
| Examination of a cracked battery from chassis 118-GY, suggesting its return to the makers for further inspection. | 11th Mar 1931 | Box 70 \ 3 scan0086 | |
| Test report and recommendations for a faulty battery exhibiting excessive gassing from chassis 37-WJ. | 1st Jul 1931 | Box 70 \ 3 scan0087 | |
| Extract discussing an unusual car issue and the normal position of the ignition lever. | 18th Aug 1925 | Box 70 \ 3 scan0088 | |
| Request for detailed particulars on battery ignition failures, specifically lever seizing and spring breakages, to aid an improved design. | 16th May 1927 | Box 70 \ 3 scan0089 | |
| Responding to a query about battery ignition system failures, specifically seizing levers and broken springs. | 18th May 1927 | Box 70 \ 3 scan0090 | |
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