| Description | Date | Identifier | |
| Chassis engine research and development for the Phantom III and 25/30 HP engines. | 30th Mar 1936 | Box 161a \ 4 scan0044 | |
| The future development of the Wraith and Bentley engines. | 30th Mar 1936 | Box 161a \ 4 scan0045 | |
| Page discussing exhaust system losses, an experimental overhead camshaft Bentley engine, and methods for investigating engine smoothness. | 31th Mar 1936 | Box 161a \ 4 scan0046 | |
| Progress report on design work over the last fortnight. | 31th Mar 1936 | Box 161a \ 4 scan0047 | |
| Design position report listing updates for Bentley, 25/30 HP, and Phantom III chassis. | 24th Mar 1936 | Box 161a \ 4 scan0048 | |
| List of design modifications and their completion status for the Phantom III and Wraith II chassis. | 24th Mar 1936 | Box 161a \ 4 scan0049 | |
| Design position list for components of the Wraith II chassis, sheet 3. | 24th Mar 1936 | Box 161a \ 4 scan0050 | |
| Design position status update for various components of the Wraith II chassis, sheet 4. | 28th Mar 1936 | Box 161a \ 4 scan0051 | |
| Progress report on various single cylinder and general research projects, listing each item and its status. | 28th Mar 1936 | Box 161a \ 4 scan0052 | |
| Progress report on design modifications for the Kestrel and Merlin 'F' engines. | 31th Mar 1936 | Box 161a \ 4 scan0053 | |
| Status report on design modifications and their completion dates for the Merlin 'F' engine. | 31th Mar 1936 | Box 161a \ 4 scan0054 | |
| Development status report for the Merlin, Goshawk 'D', and Vulture engines. | 31th Mar 1936 | Box 161a \ 4 scan0055 | |
| Design position report on various components of the Vulture engine. | 24th Mar 1936 | Box 161a \ 4 scan0056 | |
| Covering memo for a progress of design report. | 22th Apr 1936 | Box 161a \ 4 scan0057 | |
| Design position report listing the status of various chassis modifications for Bentley, 25/30 HP, and Phantom III models. | 18th Apr 1936 | Box 161a \ 4 scan0058 | |
| List of design position updates and their completion status for the Phantom III chassis. | 18th Apr 1936 | Box 161a \ 4 scan0059 | |
| Design status report for Phantom III and Wraith II chassis components. | 3rd Apr 1936 | Box 161a \ 4 scan0060 | |
| Design position report for the Wraith II model, listing the status of various components. | 4th Apr 1936 | Box 161a \ 4 scan0061 | |
| Design position report for single cylinder and general research projects. | 17th Apr 1936 | Box 161a \ 4 scan0062 | |
| Design position status report on modifications for the Kestrel and Merlin 'F' engines. | 22th Apr 1936 | Box 161a \ 4 scan0063 | |
| Design position report detailing modifications and future developments for the Merlin 'F' engine. | 22th Apr 1936 | Box 161a \ 4 scan0064 | |
| List of future development items and their design position for the Merlin, Goshawk, and Vulture engines. | 12th May 1936 | Box 161a \ 4 scan0065 | |
| Brief progress report on design work, referencing a previous report from April 1936. | 12th May 1936 | Box 161a \ 4 scan0066 | |
| Design status report for Bentley and 25/30 HP chassis components. | 9th May 1936 | Box 161a \ 4 scan0067 | |
| Design position report detailing modifications and updates for the Phantom III chassis. | 8th May 1936 | Box 161a \ 4 scan0068 | |
| Design position status report for the Wraith TT Chassis components. | 8th May 1936 | Box 161a \ 4 scan0069 | |
| Design position report for Wraith II chassis components. | 8th May 1936 | Box 161a \ 4 scan0070 | |
| Status report on single cylinder and general research projects. | 7th May 1936 | Box 161a \ 4 scan0071 | |
| Design position report detailing modifications for the Kestrel and Merlin 'F' engines. | 11th May 1936 | Box 161a \ 4 scan0072 | |
| Status report listing completed and in-progress design modifications for the Merlin 'F' engine. | 9th May 1936 | Box 161a \ 4 scan0073 | |
| Status report on design items for the Merlin 'F' engine and its future development. | 9th May 1936 | Box 161a \ 4 scan0074 | |
| Design and development status report for the Merlin, Goshawk, and Vulture engines. | 4th Jun 1936 | Box 161a \ 4 scan0075 | |
| Progress report on design work, indicating advancements since a previous update. | 4th Jun 1936 | Box 161a \ 4 scan0076 | |
| Design position report listing modifications and their status for Bentley and 25/30 HP chassis. | 29th May 1936 | Box 161a \ 4 scan0077 | |
| List of design modifications and their completion status for the Phantom III chassis. | 29th May 1936 | Box 161a \ 4 scan0078 | |
| Design position report for the Wraith II Chassis, listing components and their status. | 22th May 1936 | Box 161a \ 4 scan0079 | |
| Design position status report for various components of the Wraith II chassis. | 30th May 1936 | Box 161a \ 4 scan0080 | |
| Status report on single cylinder and general engine research items. | 22th May 1936 | Box 161a \ 4 scan0081 | |
| List of modifications and their design positions for the Kestrel and Merlin 'F' engines. | 4th Jun 1936 | Box 161a \ 4 scan0082 | |
| Design position sheet (sheet 7) detailing the status of various components for the Merlin 'F' engine. | 4th Jun 1936 | Box 161a \ 4 scan0083 | |
| Progress report on future development items for the Merlin engine, detailing the design position of various components. | 27th May 1936 | Box 161a \ 4 scan0084 | |
| Design position status list for various components of the Vulture engine. | 2nd Jul 1936 | Box 161a \ 4 scan0085 | |
| Cover memo for a report detailing the progress of design work. | 2nd Jul 1936 | Box 161a \ 4 scan0086 | |
| Status report on design modifications for Bentley, 25/30 HP, and Phantom III chassis. | 30th Jun 1936 | Box 161a \ 4 scan0087 | |
| Design position report for Phantom III and Wraith II chassis components. | 1st Jul 1936 | Box 161a \ 4 scan0088 | |
| Design position report for the Wraith II chassis, detailing the completion status of various components. | 1st Jul 1936 | Box 161a \ 4 scan0089 | |
| Design position report for the Wraith II chassis, detailing the completion status of various components. | 1st Jul 1936 | Box 161a \ 4 scan0090 | |
| Design status report for items on the Wraith II chassis. | 30th Jun 1936 | Box 161a \ 4 scan0091 | |
| Design progress report for the Wraith II model, sheet 6. | 25th Jun 1936 | Box 161a \ 4 scan0092 | |
| Status report on single cylinder and general research projects. | 25th Jun 1936 | Box 161a \ 4 scan0093 | |
| Status report on modifications for Kestrel and Merlin 'F' engines, listing item status as 'In hand' or 'Completed' with dates. | 25th Jun 1936 | Box 161a \ 4 scan0094 | |
| Design position sheet listing modifications for the Merlin 'F' engine and their completion status. | 2nd Jul 1936 | Box 161a \ 4 scan0095 | |
| Status report, sheet 10, detailing future developments and modifications for the Merlin engine. | 2nd Jul 1936 | Box 161a \ 4 scan0096 | |
| Design position update for the future development of the Merlin engine, sheet 10a. | 2nd Jul 1936 | Box 161a \ 4 scan0097 | |
| Progress report on the future development of Merlin G and H engine components, including cylinder heads. | 2nd Jul 1936 | Box 161a \ 4 scan0098 | |
| Design position and future development status sheet for Merlin, Vulture, and Kestrel XXVI engines. | 27th Jun 1936 | Box 161a \ 4 scan0099 | |
| Cover note for a design progress report. | 6th Aug 1936 | Box 161a \ 4 scan0100 | |
| Design position report detailing modifications and completion status for Bentley, 25/30 HP, and Phantom III chassis. | 5th Aug 1936 | Box 161a \ 4 scan0101 | |
| List of design modifications and their status for the Phantom III chassis. | 5th Aug 1936 | Box 161a \ 4 scan0102 | |
| Design position report for the Wraith II Chassis, listing various components and their completion status. | 5th Aug 1936 | Box 161a \ 4 scan0103 | |
| Design position status report for the Wraith II, listing components and their completion status. | 17th Jul 1936 | Box 161a \ 4 scan0104 | |
| Design position report for the Wraith II model, listing parts and their completion status. | 5th Aug 1936 | Box 161a \ 4 scan0105 | |
| Status report on the design position of various components for the Wraith II model. | 6th Aug 1936 | Box 161a \ 4 scan0106 | |
| Design position report detailing the status of research and development items for various engine projects. | 6th Aug 1936 | Box 161a \ 4 scan0107 | |
| Status report on modifications and future developments for the Merlin 'F' engine. | 30th Jul 1936 | Box 161a \ 4 scan0108 | |
| Status report on the design position and future development for the Merlin and Merlin 'C' engines. | 5th Aug 1936 | Box 161a \ 4 scan0109 | |
| Design position report for Merlin 'G' and 'H' engine components and modifications. | 9th Jul 1936 | Box 161a \ 4 scan0110 | |
| Design status report for Vulture and Kestrel XXVI engine components. | 9th Jul 1936 | Box 161a \ 4 scan0111 | |
| Cover note for a report detailing the progress of design work since a previous update. | 7th Sep 1936 | Box 161a \ 4 scan0112 | |
| Design position report detailing modifications for Bentley and 25/30 HP chassis. | 4th Sep 1936 | Box 161a \ 4 scan0113 | |
| Status report on design items for the 25/30 HP and Phantom III chassis. | 31th Aug 1936 | Box 161a \ 4 scan0114 | |
| Design position status list for Phantom III and Wraith II chassis modifications and their completion dates. | 1st Sep 1936 | Box 161a \ 4 scan0115 | |
| Design position status report for the Wraith II Chassis, listing various components and their completion dates. | 31th Aug 1936 | Box 161a \ 4 scan0116 | |
| Design position report for the Wraith II model, detailing the status of various components. | 4th Sep 1936 | Box 161a \ 4 scan0117 | |
| Status report on single-cylinder and general engine research projects. | 5th Sep 1936 | Box 161a \ 4 scan0118 | |
| Design position report detailing modifications and their completion status for Kestrel and Merlin engines. | 26th Aug 1936 | Box 161a \ 4 scan0119 | |
| Design position report detailing modifications and their completion status for the Merlin 'F' Engine. | 5th Sep 1936 | Box 161a \ 4 scan0120 | |
| Design position report detailing modifications and future developments for the Merlin 'F' engine. | 5th Sep 1936 | Box 161a \ 4 scan0121 | |
| Design position document outlining the status of future developments and modifications for the Merlin and Merlin 'G' engines. | 5th Sep 1936 | Box 161a \ 4 scan0122 | |
| List of modifications and design status updates for Merlin 'G' and 'H' engines. | 5th Sep 1936 | Box 161a \ 4 scan0123 | |
| Design position report for Merlin, Kestrel, and Vulture engine components. | 1st Sep 1936 | Box 161a \ 4 scan0124 | |
| Design position report listing the status of various components for the Vulture engine. | 15th Aug 1936 | Box 161a \ 4 scan0125 | |
| Cover note for a report detailing the progress of design work. | 24th Sep 1936 | Box 161a \ 4 scan0126 | |
| Design position report detailing modifications and updates for Bentley and 25/30 HP chassis. | 17th Sep 1936 | Box 161a \ 4 scan0127 | |
| Progress report on design modifications and instructions for the Phantom III chassis. | 18th Sep 1936 | Box 161a \ 4 scan0128 | |
| List of design modifications and their status for the Phantom III model. | 15th Sep 1936 | Box 161a \ 4 scan0129 | |
| Design position report detailing the status of various components for the Wraith II chassis. | 21th Sep 1936 | Box 161a \ 4 scan0130 | |
| List of items and their current status for the Wraith II model. | 21th Sep 1936 | Box 161a \ 4 scan0131 | |
| Design position report detailing the status of various engine research and development items. | 21th Sep 1936 | Box 161a \ 4 scan0132 | |
| Design position report for Kestrel and Merlin 'F'/1 engine modifications. | 22th Sep 1936 | Box 161a \ 4 scan0133 | |
| Design position report detailing modifications and development status for Merlin F/1 and G engines. | 22th Sep 1936 | Box 161a \ 4 scan0134 | |
| Design position report listing modifications and status for Merlin 'G' and 'H' engines. | 22th Sep 1936 | Box 161a \ 4 scan0135 | |
| Design position report for the Kestrel XXVI and Vulture engines. | 16th Sep 1936 | Box 161a \ 4 scan0136 | |
| Chassis engine research and development for the Phantom III, specifically concerning cylinder valves and passages. | 5th Oct 1936 | Box 161a \ 4 scan0137 | |
| Proposed engine and chassis developments, focusing on cooling system improvements. | 5th Oct 1936 | Box 161a \ 4 scan0138 | |
| Development report on valve gear, crankshaft, and flywheel components, including for the Phantom III engine. | 5th Oct 1936 | Box 161a \ 4 scan0139 | |
| Development and testing of engine components for the Phantom III. | 30th Mar 1936 | Box 161a \ 4 scan0140 | |
| Design considerations and test results for the 25/30 HP and Wraith engines. | 30th Mar 1936 | Box 161a \ 4 scan0141 | |
| Engine development report on the future Wraith, Bentley, and Phantom III models, including various component tests and modifications. | 30th Mar 1936 | Box 161a \ 4 scan0142 | |
| Engine development, including connecting rods, future Bentley engines, engine smoothness, and supercharging. | 3rd Oct 1936 | Box 161a \ 4 scan0143 | |
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