| Description | Date | Identifier | |
| Design position report detailing the status of various engine development tasks. | 5th Sep 1935 | Box 30 \ 4 Scan004 | |
| Design position report on the Merlin 'E' engine, listing completed tasks and future developments. | 6th Sep 1935 | Box 30 \ 4 Scan005 | |
| List of future development items for the Merlin 'E' engine and their design position. | 21th Sep 1935 | Box 30 \ 4 Scan006 | |
| Cover letter for a fortnightly report on the progress of design work. | 21th Sep 1935 | Box 30 \ 4 Scan007 | |
| Design position report detailing the status of various components for a Bentley chassis. | 20th Sep 1935 | Box 30 \ 4 Scan008 | |
| Design position report detailing the status of modifications for various chassis models. | 9th Sep 1935 | Box 30 \ 4 Scan009 | |
| Status update list of design and modification items for the Phantom III Chassis. | 20th Sep 1935 | Box 30 \ 4 Scan010 | |
| Design position report detailing modifications and their status for the Phantom III Chassis. | 20th Sep 1935 | Box 30 \ 4 Scan011 | |
| Design position report on modifications for the Phantom III and Wraith chassis. | 20th Sep 1935 | Box 30 \ 4 Scan012 | |
| Status report on single cylinder and general research projects. | 19th Sep 1935 | Box 30 \ 4 Scan013 | |
| Design position report detailing the status of modifications for the Kestrel and Merlin 'E' engines. | 19th Sep 1935 | Box 30 \ 4 Scan014 | |
| Design position and future development status for Merlin 'E', Merlin 'C', and Vulture engines. | 19th Sep 1935 | Box 30 \ 4 Scan015 | |
| Cover note for a fortnightly report on the progress of design work. | 8th Oct 1935 | Box 30 \ 4 Scan016 | |
| Status report on design items for the Bentley and 20/25 HP chassis. | 30th Sep 1935 | Box 30 \ 4 Scan017 | |
| Status report on design items for the Phantom III chassis. | 30th Sep 1935 | Box 30 \ 4 Scan018 | |
| Design position report listing modifications and their completion status for the Phantom III model. | 8th Oct 1935 | Box 30 \ 4 Scan019 | |
| Design position report listing modifications and their status for the Phantom III and Wraith chassis. | 8th Oct 1935 | Box 30 \ 4 Scan020 | |
| Design position status update for various components of the Wraith Chassis. | 3rd Oct 1935 | Box 30 \ 4 Scan021 | |
| Design position report on single cylinder and general research items for various engines. | 3rd Oct 1935 | Box 30 \ 4 Scan022 | |
| Design position report detailing modifications and status for the Kestrel and Merlin 'E' engines. | 7th Oct 1935 | Box 30 \ 4 Scan023 | |
| Design status report on development items for the Merlin, Vulture, and Goshawk engines. | 8th Oct 1935 | Box 30 \ 4 Scan024 | |
| Design position report for various components of the Goshawk 'B' Engine. | 8th Oct 1935 | Box 30 \ 4 Scan025 | |
| Cover memo for a fortnightly design progress report. | 25th Oct 1935 | Box 30 \ 4 Scan026 | |
| Design position report detailing the status of components for Bentley and 20/25 HP chassis. | 22th Oct 1935 | Box 30 \ 4 Scan027 | |
| Design position report listing development tasks for the 20/25 HP and Phantom III chassis. | 23th Oct 1935 | Box 30 \ 4 Scan028 | |
| List of design items and their status for the Phantom III Chassis. | 22th Oct 1935 | Box 30 \ 4 Scan029 | |
| List of modifications and their design status for the Phantom III vehicle. | 22th Oct 1935 | Box 30 \ 4 Scan030 | |
| Design status update for various components of the Wraith chassis. | 23th Oct 1935 | Box 30 \ 4 Scan031 | |
| Status report on single cylinder and general engine research items, detailing progress on Merlin, Vulture, and Kestrel components. | 23th Oct 1935 | Box 30 \ 4 Scan032 | |
| Design position report on modifications and future developments for Kestrel and Merlin 'E' engines. | 22th Oct 1935 | Box 30 \ 4 Scan033 | |
| Design position report on the development status of components for the Merlin, Goshawk, and Vulture engines. | 9th Nov 1935 | Box 30 \ 4 Scan034 | |
| Cover note for a fortnightly report on design progress. | 9th Nov 1935 | Box 30 \ 4 Scan035 | |
| Design position report on modifications and investigations for Bentley and 20/25 HP chassis. | 30th Oct 1935 | Box 30 \ 4 Scan036 | |
| Design position report detailing the status of various items for the 20/25 HP and Phantom III chassis. | 28th Oct 1935 | Box 30 \ 4 Scan037 | |
| Progress report on design modifications and tasks for the Phantom III model. | 6th Nov 1935 | Box 30 \ 4 Scan038 | |
| Design position report detailing the status of components for the Phantom III and Wraith chassis. | 7th Nov 1935 | Box 30 \ 4 Scan039 | |
| Design position report for items related to the Wraith chassis. | 30th Oct 1935 | Box 30 \ 4 Scan040 | |
| Status report on single cylinder and general engine research projects. | 30th Oct 1935 | Box 30 \ 4 Scan041 | |
| List of modifications and their status for the Kestrel and Merlin 'E' engines. | 7th Nov 1935 | Box 30 \ 4 Scan042 | |
| Design position report detailing modifications and future developments for the Merlin 'E' and Goshawk 'B' engines. | 7th Nov 1935 | Box 30 \ 4 Scan043 | |
| Design position report detailing the status of modifications and investigations for Goshawk, Vulture, and Merlin engines. | 7th Nov 1935 | Box 30 \ 4 Scan044 | |
| Cover note for a fortnightly report on the progress of design work. | 26th Nov 1935 | Box 30 \ 4 Scan045 | |
| Design position report listing the status of various modifications and investigations for the Bentley chassis. | 23th Nov 1935 | Box 30 \ 4 Scan046 | |
| Design position status report for the 20/25 HP and Phantom III chassis. | 23th Nov 1935 | Box 30 \ 4 Scan047 | |
| Status list of design items and modifications for the Phantom III model. | 22th Nov 1935 | Box 30 \ 4 Scan048 | |
| Design position report detailing the status of components for the Phantom III and Wraith Chassis. | 25th Nov 1935 | Box 30 \ 4 Scan049 | |
| Design position report for various components of the Wraith chassis. | 20th Nov 1935 | Box 30 \ 4 Scan050 | |
| Design position report on single cylinder and general research items, including Merlin and Vulture engine components. | 20th Nov 1935 | Box 30 \ 4 Scan051 | |
| Design position report outlining modifications and their status for the Kestrel and Merlin 'E' engines. | 21th Nov 1935 | Box 30 \ 4 Scan052 | |
| Design position report detailing modifications and progress on the Merlin 'E' and Goshawk 'B' engines. | 26th Nov 1935 | Box 30 \ 4 Scan053 | |
| Design position report detailing the status of modifications and investigations for Goshawk 'B', Vulture, and Merlin 'C' engines. | 26th Nov 1935 | Box 30 \ 4 Scan054 | |
| Design position report on the Buzzard engine and future developments for the Merlin 'E' engine. | 21th Nov 1933 | Box 30 \ 4 Scan055 | |
| Cover note for a fortnightly report on the progress of design. | 11th Dec 1935 | Box 30 \ 4 Scan056 | |
| Status list of modifications and investigations for the Bentley chassis. | 10th Dec 1935 | Box 30 \ 4 Scan057 | |
| Status report on design modifications and their progress for the 20/25 HP chassis. | 10th Dec 1935 | Box 30 \ 4 Scan058 | |
| Design status report for various components of the Phantom III chassis. | 10th Dec 1935 | Box 30 \ 4 Scan059 | |
| Design position report for the Phantom III chassis, detailing the status of various modifications. | 10th Dec 1935 | Box 30 \ 4 Scan060 | |
| List of design modifications and their current status for the Phantom III and Wraith Chassis models. | 31th Dec 1935 | Box 30 \ 4 Scan061 | |
| Status report on single cylinder and general research design projects. | 31th Dec 1935 | Box 30 \ 4 Scan062 | |
| Design position report detailing the status of modifications for Kestrel and Merlin engines. | 31th Dec 1935 | Box 30 \ 4 Scan063 | |
| Progress report on design modifications for Bentley and Phantom II chassis. | 31th Dec 1935 | Box 30 \ 4 Scan064 | |
| Design status sheet for modifications on the Phantom II and Spectre chassis. | 31th Dec 1935 | Box 30 \ 4 Scan065 | |
| Design position report detailing the status of items for the Spectre and Wraith chassis. | 31th Dec 1935 | Box 30 \ 4 Scan066 | |
| Design position report detailing the status of items for the Wraith Chassis and Phantom II Tank Engines. | 31th Dec 1935 | Box 30 \ 4 Scan067 | |
| Status report on single cylinder and general engine research projects. | 31th Dec 1935 | Box 30 \ 4 Scan068 | |
| Design position report on various engine projects, detailing the status of specific components. | 31th Dec 1935 | Box 30 \ 4 Scan069 | |
| Design position sheet listing development status for P.V.G.II and P.V.XII engine components. | 2nd Nov 1934 | Box 30 \ 4 Scan070 | |
| Cover note for a fortnightly report on the progress of design work. | 2nd Nov 1934 | Box 30 \ 4 Scan071 | |
| Design position report detailing the status of various items for the 20/25 HP and Bentley chassis. | 2nd Nov 1934 | Box 30 \ 4 Scan072 | |
| Design position report detailing the status of various components for Bentley, Phantom II, and Spectre chassis. | 2nd Nov 1934 | Box 30 \ 4 Scan073 | |
| Status list of design modifications for the Spectre Chassis. | 2nd Nov 1934 | Box 30 \ 4 Scan074 | |
| Design position report for the Spectre and Wraith chassis. | 2nd Nov 1934 | Box 30 \ 4 Scan075 | |
| Design position report listing the status of various components for the Wraith model. | 2nd Nov 1934 | Box 30 \ 4 Scan076 | |
| List of design items for the Wraith project and their current status. | 2nd Nov 1934 | Box 30 \ 4 Scan077 | |
| Status report on single cylinder and general engine research projects, listing their current design position. | 2nd Nov 1934 | Box 30 \ 4 Scan078 | |
| Design position report detailing the status of modifications for the Kestrel, Griffon, and Vulture engines. | 2nd Nov 1934 | Box 30 \ 4 Scan079 | |
| Design position status report for Vulture and P.V.XII engines. | 8th Feb 1934 | Box 30 \ 4 Scan080 | |
| Proposal to issue a fortnightly report on the progress of aero and chassis design work. | 8th Feb 1934 | Box 30 \ 4 Scan081 | |
| Chassis design progress report detailing modifications for the Phantom II, 20/25 HP, and Bentley models following 10,000-mile tests. | 8th Feb 1934 | Box 30 \ 4 Scan082 | |
| Design status update on a radiator shutter modification, the Spectre engine, and an 8-cylinder engine for the 20/25 HP Car. | 8th Feb 1934 | Box 30 \ 4 Scan083 | |
| Progress report on various aero engine design projects, including Kestrel, Goshawk, and Merlin. | 8th Feb 1934 | Box 30 \ 4 Scan084 | |
| Short note on the progress of a battery ignition design for the Kestrel Engine. | 19th Feb 1934 | Box 30 \ 4 Scan085 | |
| The status of work in hand in the drawing office for the Kestrel, Kestrel Single Cylinder, and Goshawk engines. | 19th Feb 1934 | Box 30 \ 4 Scan086 | |
| Status report on design schemes and modifications for Goshawk, Griffon, and P.V.XII aero engines. | 19th Feb 1934 | Box 30 \ 4 Scan087 | |
| List of modifications and drawing status for the P.V.XII Aero Engine. | 19th Feb 1934 | Box 30 \ 4 Scan088 | |
| Status report on design drawings and schemes for P.V.G. & Merlin aero engines and the Phantom II chassis. | 19th Feb 1934 | Box 30 \ 4 Scan089 | |
| List of modifications and updates for the Phantom II Chassis. | 19th Feb 1934 | Box 30 \ 4 Scan090 | |
| Status list of drawings and modifications for Phantom II and Japan III chassis and engine components. | 19th Feb 1934 | Box 30 \ 4 Scan091 | |
| List of technical schedule updates for the 'Japan III' chassis, detailing modifications and their status. | 19th Feb 1934 | Box 30 \ 4 Scan092 | |
| List of engineering modifications and their status for the 3 1/2 Litre Bentley Chassis. | 19th Feb 1934 | Box 30 \ 4 Scan093 | |
| List of engineering modifications and component updates for the 3 1/2 Litre Bentley Chassis. | 19th Feb 1934 | Box 30 \ 4 Scan094 | |
| Status report on engineering schemes for the 3½ Litre Bentley and 20/25 HP chassis. | 19th Feb 1934 | Box 30 \ 4 Scan095 | |
| List of modifications and schemes related to the 20/25 HP Chassis. | 19th Feb 1934 | Box 30 \ 4 Scan096 | |
| Schedule of modifications and drawings for the 20/25 HP Chassis. | 19th Feb 1934 | Box 30 \ 4 Scan097 | |
| Progress report on engineering tasks for the 20/25 HP chassis and Spectre 12-cylinder engine. | 19th Feb 1934 | Box 30 \ 4 Scan098 | |
| Status report on various engine and chassis components for the Spectre, Vulture, and general car models. | 19th Feb 1934 | Box 30 \ 4 Scan099 | |
| Status update on schemes for a 20/25 HP W.O. Tank, a Test Rig for Bearing Alloys, and an Air Cleaner. | 19th Feb 1934 | Box 30 \ 4 Scan100 | |
| Cover letter for the second fortnightly report on the progress of design work. | 23th Feb 1934 | Box 30 \ 4 Scan101 | |
| List of completed design items for the 20/25 HP chassis. | 23th Feb 1934 | Box 30 \ 4 Scan102 | |
| Design position report detailing the status of various modifications to the Bentley chassis. | 23th Feb 1934 | Box 30 \ 4 Scan103 | |
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