| Description | Date | Identifier | |
| List of questions for Mr. Royce regarding issues with the battery ignition system. | 3rd Mar 1921 | Box 35 \ 6 scan 030 | |
| Extract discussing the materials and performance of the American Bosch Battery Ignition system. | 1st Jun 1922 | Box 35 \ 6 scan 031 | |
| The failure of Tungsten steel contact points for battery ignition after testing on a demonstration car. | 24th Mar 1921 | Box 35 \ 6 scan 032 | |
| Trial of tungsten contacts for battery ignition from C. Melin & Co. | 1st Apr 1921 | Box 35 \ 6 scan 033 | |
| Cover memo for an attached report concerning Tungsten points and their reaction to current density. | 7th Apr 1921 | Box 35 \ 6 scan 034 | |
| Technical memorandum discussing current density in tungsten contact points for various ignition systems. | 5th Apr 1921 | Box 35 \ 6 scan 035 | |
| Continued report on distributor sparking issues with tungsten contacts and proposed solutions. | 19th Jan 1921 | Box 35 \ 6 scan 036 | |
| Trial report on sample tungsten contacts for a magneto contact breaker. | 15th Apr 1921 | Box 35 \ 6 scan 037 | |
| Test report on sample tungsten contacts from Messrs. Blackwell. | 13th Apr 1921 | Box 35 \ 6 scan 038 | |
| Confirming receipt of 'Neo-Tungsten' ignition points from C.Melin & Co. for testing. | 1st Apr 1921 | Box 35 \ 6 scan 039 | |
| From EFC to EP requesting a report on the operation of a pair of tungsten contacts. | 6th May 1921 | Box 35 \ 6 scan 040 | |
| Proposal by Mr. Royce for an experiment on tungsten contacts in low tension make and break systems. | 7th May 1921 | Box 35 \ 6 scan 041 | |
| Instructions for arranging swivelling tungsten contact points on a distributor. | 9th May 1921 | Box 35 \ 6 scan 042 | |
| Instruction sheet with a diagram detailing the modification of a blade by bending it to a 30-degree angle. | 24th Jan 1919 | Box 35 \ 6 scan 043 | |
| The condition of a pair of Tungsten contacts after 1500 miles of use. | 24th May 1921 | Box 35 \ 6 scan 044 | |
| From EFC to FHC regarding a request from Mr. Royce to experiment with new tungsten points for battery ignition. | 1st Jun 1921 | Box 35 \ 6 scan 045 | |
| Instructions and drawings for scrubbing contact points, including a condenser contact, back-plate, and clamping bolt. | 1st Jun 1921 | Box 35 \ 6 scan 046 | |
| Instruction sheet with a schematic drawing of a screw-point mounting and blade. | 19th Aug 1921 | Box 35 \ 6 scan 047 | |
| Reports on the experimental running of tungsten contact points. | 6th Jun 1921 | Box 35 \ 6 scan 048 | |
| Test report on tungsten contact points from the Tungsten Manufacturing Co. under various electrical conditions. | 25th May 1921 | Box 35 \ 6 scan 049 | |
| Experiment investigating the effects of sparking on tungsten points. | 1st Jun 1921 | Box 35 \ 6 scan 050 | |
| Test report on tungsten contact points from Fansteel Co. U.S.A. after a 400-hour bench run. | 1st Jun 1921 | Box 35 \ 6 scan 051 | |
| The ongoing testing of tungsten contacts. | 15th Jun 1921 | Box 35 \ 6 scan 052 | |
| Follow-up memo regarding test results for Tungsten Contacts for Battery Ignition. | 15th Jun 1921 | Box 35 \ 6 scan 053 | |
| Parts from vehicles returned from America, evaluating the low tension contact maker, coil, and ballast resistance. | 21th Jun 1921 | Box 35 \ 6 scan 054 | |
| Extract regarding U.S.A. complaints about battery ignition systems and the reliability of tungsten versus platinum-iridium contact points. | 12th Jul 1921 | Box 35 \ 6 scan 055 | |
| Extract concerning American Bosch ignition on 4EX, specifically the durability of platinum iridium points. | 4th Aug 1921 | Box 35 \ 6 scan 056 | |
| Instruction sheet detailing further tests conducted on two different sets of tungsten contact points. | 13th Aug 1921 | Box 35 \ 6 scan 057 | |
| Instructions regarding the measurement and adjustment of spark-gap points. | 6th Nov 1918 | Box 35 \ 6 scan 058 | |
| Instruction sheet detailing engine test results, specifically issues with misfiring and contact sparking over a 150-hour run. | 6th Nov 1918 | Box 35 \ 6 scan 059 | |
| Test of tungsten points, noting discoloration, rust, and recommendations for the next test. | 6th Nov 1918 | Box 35 \ 6 scan 060 | |
| Instructions on using two condensers in parallel for ignition systems to improve sparking. | 6th Nov 1918 | Box 35 \ 6 scan 061 | |
| Instructions for determining ideal condenser capacity by creating a test series. | 16th Aug 1921 | Box 35 \ 6 scan 062 | |
| Requesting feedback on the performance of a batch of tungsten contact points. | 16th Aug 1921 | Box 35 \ 6 scan 063 | |
| Inquiring about the status and performance of tungsten contact points from a Delco Liberty ignition set. | 16th Aug 1921 | Box 35 \ 6 scan 064 | |
| Further tests and experiments with tungsten contact points. | 16th Aug 1921 | Box 35 \ 6 scan 065 | |
| The cause of roller rusting, suggesting it is due to oscillatory discharges and sparking. | 16th Aug 1921 | Box 35 \ 6 scan 066 | |
| Further tests of two sets of tungsten contact points supplied by the Fansteel Co. | 13th Aug 1921 | Box 35 \ 6 scan 067 | |
| Test report on misfiring, contact sparking, and component degradation during a 150-hour run. | 11th Aug 1930 | Box 35 \ 6 scan 068 | |
| Summary table of tests on tungsten contacts from various firms for high and low tension points. | 16th Aug 1921 | Box 35 \ 6 scan 069 | |
| Log sheet detailing tests and remarks on electrical contacts and rods from various suppliers. | 27th Sep 1920 | Box 35 \ 6 scan 070 | |
| Instruction sheet detailing the unsatisfactory performance of tungsten points after a 5,000-mile test. | 18th Mar 1921 | Box 35 \ 6 scan 071 | |
| Performance of a U.S.A. Bosch condenser compared to mica condensers and recommending further testing for the Goshawk 11. | 16th Sep 1921 | Box 35 \ 6 scan 072 | |
| Testing different condenser and tungsten point combinations for battery ignition systems. | 27th Sep 1921 | Box 35 \ 6 scan 073 | |
| Design and materials for an inexpensive condenser for an ignition system. | 1st Nov 1921 | Box 35 \ 6 scan 074 | |
| Investigations into various tungsten contact points for battery ignition systems. | 10th Nov 1921 | Box 35 \ 6 scan 075 | |
| Technical report on testing paper and mica condensers, and tungsten contacts for ignition systems. | 10th Nov 1921 | Box 35 \ 6 scan 076 | |
| The performance tests of Melin tungsten contact points. | 19th Sep 1921 | Box 35 \ 6 scan 077 | |
| Test report on the performance of tungsten contacts when run on a lower voltage. | 6th Oct 1921 | Box 35 \ 6 scan 078 | |
| Test report on tungsten contact points with double capacity at 6 volts to reduce sparking. | 7th Nov 1921 | Box 35 \ 6 scan 079 | |
| Tests of distributors and condensers, proposing further testing on American ignition sets. | 25th Nov 1921 | Box 35 \ 6 scan 080 | |
| The trial of tungsten points for the Goshawk ignition system. | 25th Nov 1921 | Box 35 \ 6 scan 081 | |
| Request for Goshawk II distributor contact points, specifying tungsten points from supplier Messrs. Melin over Messrs. Reynolds. | 1st Dec 1921 | Box 35 \ 6 scan 082 | |
| Carbon copy of a note regarding an order for low tension contact rivets and screws. | 7th Dec 1921 | Box 35 \ 6 scan 083 | |
| Request for a report on the behaviour of tungsten contact points on the Demonstration Car. | 23th Dec 1921 | Box 35 \ 6 scan 084 | |
| Telephone message regarding a C.A.V. battery and Tungsten Points on a School Car. | 2nd Jan 1922 | Box 35 \ 6 scan 085 | |
| Letter from supplier C. Melin & Co. clarifying whether an enquiry for rivets and screws is for use with magnetos or battery work. | 2nd Jan 1922 | Box 35 \ 6 scan 086 | |
| The wear and performance of iridium-platinum versus tungsten ignition points on experimental cars. | 4th Jan 1922 | Box 35 \ 6 scan 087 | |
| Log sheet recording tests and remarks for tungsten contacts supplied by Tungsten Mfg. Co. and Fansteel Co. | 18th Aug 1921 | Box 35 \ 6 scan 088 | |
| Log of tests and remarks on ignition components from various firms. | 18th Aug 1921 | Box 35 \ 6 scan 089 | |
| Log tracking the specifications and testing history of ignition components supplied by Reynolds & Co. | 28th Sep 1920 | Box 35 \ 6 scan 090 | |
| Log sheet tracking parts or components, their specifications, and testing history. | 11th Jan 1924 | Box 35 \ 6 scan 091 | |
| Letter from C. Melin & Co. regarding samples and pricing for contact screws. | 9th Jan 1922 | Box 35 \ 6 scan 092 | |
| Test report on Tungsten Points with a Paper Condenser after 65 hours of running. | 24th Jul 1922 | Box 35 \ 6 scan 093 | |
| Instruction sheet detailing the observation of increasing sparking and deterioration of contacts over time. | 24th Jul 1922 | Box 35 \ 6 scan 094 | |
| Requesting the fitting of tungsten points to Goshawk ignition levers for testing. | 8th Aug 1922 | Box 35 \ 6 scan 095 | |
| 'Eska' tungsten contact points received from C. Melin & Co. to be fitted to a Goshawk vehicle. | 8th Sep 1922 | Box 35 \ 6 scan 096 | |
| Request for a report on the behaviour of 'Normal' and 'Eska' tungsten contact points for a Goshawk. | 19th Jan 1923 | Box 35 \ 6 scan 097 | |
| Endurance tests of Goshawk contact breaker and distributor, comparing rubbing blocks and testing tungsten points. | 15th Feb 1923 | Box 35 \ 6 scan 098 | |
| Endurance test report for a Goshawk distributor, focusing on bakelite rubbing block wear. | 30th Oct 1922 | Box 35 \ 6 scan 099 | |
| Test report on a distributor, detailing wear, corrosion, and changes in spring load and platinum point gap. | 29th Jan 1923 | Box 35 \ 6 scan 100 | |
| Endurance test report for parts fitted to a Goshawk ignition system. | 29th Jan 1923 | Box 35 \ 6 scan 101 | |
| The wear of a bakelite block and corrosion of sparking points and a rotor after a 4,000-mile test. | 16th Feb 1923 | Box 35 \ 6 scan 102 | |
| Handing over of a pair of 'normal' tungsten contact points for a Goshawk engine. | 16th Feb 1923 | Box 35 \ 6 scan 103 | |
| The purchase of 'Eska' quality tungsten contact points for Goshawk ignition experiments. | 15th May 1923 | Box 35 \ 6 scan 104 | |
| Endurance tests of a Goshawk contact breaker and distributor, comparing different rubbing blocks and testing tungsten contact points. | 15th Mar 1923 | Box 35 \ 6 scan 105 | |
| Supply and fitting of 'Eska' tungsten contact points for a 20 HP model. | 17th Jul 1923 | Box 35 \ 6 scan 106 | |
| Letter detailing the dispatch of an updated contact breaker lever and a higher temperature dynamo sentinel for a school car. | 17th Jul 1923 | Box 35 \ 6 scan 107 | |
| Fitting and testing of two sets of tungsten contact points for Goshawk chassis. | 31th Aug 1923 | Box 35 \ 6 scan 108 | |
| Fitting of tungsten contact points for a 20 HP model to chassis 3GII. | 4th Oct 1923 | Box 35 \ 6 scan 109 | |
| Fitting one pair of tungsten contact points to chassis 3GII and another pair to chassis 7GII. | 11th Oct 1923 | Box 35 \ 6 scan 110 | |
| Confirming the fitting of tungsten contact points to specific chassis. | 16th Oct 1923 | Box 35 \ 6 scan 111 | |
| The examination of Eska tungsten points on models 3GII and 7GII which are burning away. | 14th Nov 1923 | Box 35 \ 6 scan 112 | |
| Summary of reports on the Goshawk battery ignition distributor and contact breaker. | 25th Feb 1924 | Box 35 \ 6 scan 113 | |
| Bench test report on Goshawk ignition parts after a 10,000-mile endurance test. | 31th Jan 1924 | Box 35 \ 6 scan 114 | |
| Inspection report on the wear and performance of Tungsten Points AQ and AR after road testing. | 20th Feb 1924 | Box 35 \ 6 scan 115 | |
| Preventing pip formation in electrical contacts by reversing current. | 22th Feb 1924 | Box 35 \ 6 scan 116 | |
| Test house report on tungsten contact points AC and AR. | 22th Feb 1924 | Box 35 \ 6 scan 117 | |
| The wear of standard Bakelite contact breaker rubbing blocks on various cars. | 22th Feb 1924 | Box 35 \ 6 scan 118 | |
| Electrical experimental record sheet for Eska Tungsten Points. | 1st Nov 1923 | Box 35 \ 6 scan 119 | |
| Recommendation to use tungsten points instead of platinum for battery ignition systems. | 3rd Apr 1934 | Box 35 \ 6 scan 120 | |
| Fitting the last set of Eska tungsten contact points designated AS. | 24th Apr 1924 | Box 35 \ 6 scan 121 | |
| Mileage report for Eska Tungsten Points fitted to two vehicles. | 25th Apr 1924 | Box 35 \ 6 scan 122 | |
| Extract detailing the satisfactory performance of 'Eska' tungsten points following mileage tests. | 29th Apr 1924 | Box 35 \ 6 scan 123 | |
| Electrical experimental record sheet for Eska Tungsten Points. | 29th Oct 1923 | Box 35 \ 6 scan 124 | |
| Report comparing the performance of platinum versus tungsten interrupter points, coils, and condensers. | 11th Jun 1926 | Box 35 \ 6 scan 125 | |
| Performance and testing of American Bosch and Delco coils and condensers. | 11th Jun 1926 | Box 35 \ 6 scan 126 | |
| Inspection report on the wear of Eska Tungsten points from a Goshawk distributor after 11,587 miles. | 26th Jun 1924 | Box 35 \ 6 scan 127 | |
| Instruction sheet detailing the condition and performance of engine contact points after a chassis test. | 28th Jun 1920 | Box 35 \ 6 scan 128 | |
| Querying a change of distributor parts from a 6-GII to a 7-GII and requesting clarification to update records. | 13th Aug 1924 | Box 35 \ 6 scan 129 | |
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