| Description | Date | Identifier | |
| Design progress report for the Spectre chassis, listing components and their completion status. | 23th Feb 1934 | Box 30 \ 4 Scan104 | |
| Design position report for various chassis and engine components. | 23th Feb 1934 | Box 30 \ 4 Scan105 | |
| Design status report for a 16-ton tank, focusing on the sump and carburetter test arrangement. | 23th Feb 1934 | Box 30 \ 4 Scan106 | |
| Progress report on cylinder head and other engine component investigations for Kestrel, Goshawk, and a proof engine. | 23th Feb 1934 | Box 30 \ 4 Scan107 | |
| Design position report for the 'B', Goshawk, and Merlin engines. | 23th Feb 1934 | Box 30 \ 4 Scan108 | |
| Design position report on items for the Griffon, Kestrel, and P.V. XII engines. | 23th Feb 1934 | Box 30 \ 4 Scan109 | |
| Fortnightly progress report on design work. | 12th Mar 1934 | Box 30 \ 4 Scan110 | |
| Design position status report on modifications for the 20/25 HP and Bentley chassis. | 12th Mar 1934 | Box 30 \ 4 Scan111 | |
| Design progress report for Bentley and Spectre chassis components. | 12th Mar 1934 | Box 30 \ 4 Scan112 | |
| Design position status report for components of the Spectre and Phantom II chassis. | 12th Mar 1934 | Box 30 \ 4 Scan113 | |
| Design status report detailing development items and their progress for various chassis and engines. | 12th Mar 1934 | Box 30 \ 4 Scan114 | |
| Design position status report for engine components, including Cylinder Head and Goshawk engine parts. | 12th Mar 1934 | Box 30 \ 4 Scan115 | |
| Design progress report on components for the Goshawk, Merlin, Griffon, and Kestrel engines. | 12th Mar 1934 | Box 30 \ 4 Scan116 | |
| Design status report for components of the Kestrel, P.V. 12, R.R. 'A', and R.R. 'B' engines. | 16th Mar 1934 | Box 30 \ 4 Scan117 | |
| Trend of car front design, referencing the Berlin Show and predicting future styles. | 16th Mar 1934 | Box 30 \ 4 Scan118 | |
| Status of design work in hand for the Kestrel engine. | 23th Mar 1934 | Box 30 \ 4 Scan119 | |
| Status report on design modifications and drawings for 'Kestrel' and 'Goshawk' engine components. | 23th Mar 1934 | Box 30 \ 4 Scan120 | |
| List of design modifications and schemes for Goshawk, Griffon, P.V.XII, and P.V.G. aero engines. | 23th Mar 1934 | Box 30 \ 4 Scan121 | |
| Progress report on various P.V.G., All Aero, and Merlin engine components and designs. | 23th Mar 1934 | Box 30 \ 4 Scan122 | |
| Progress report on design schemes for the Merlin Aero Engine and Phantom II Chassis. | 25th Mar 1934 | Box 30 \ 4 Scan123 | |
| Log of design modifications and drawing statuses for various chassis and engine components. | 23th Mar 1934 | Box 30 \ 4 Scan124 | |
| List of modifications and schemes for the Japan III Chassis, detailing updates to the gearbox, clutch, and brake systems. | 23th Mar 1934 | Box 30 \ 4 Scan125 | |
| Status report on modifications for the 3½ Litre Bentley Chassis. | 23th Mar 1934 | Box 30 \ 4 Scan126 | |
| Status report on design changes and drawings for the 3½ Litre Bentley Chassis. | 23th Mar 1934 | Box 30 \ 4 Scan127 | |
| List of modifications and parts status updates for the 3 1/2 Litre Bentley and 20/25 HP chassis. | 23th Mar 1934 | Box 30 \ 4 Scan128 | |
| List of engineering schedule items for the 20/25 HP Chassis and the Spectre 12-Cylinder Engine. | 23th Mar 1934 | Box 30 \ 4 Scan129 | |
| Status update list for Spectre 12-cylinder engine components. | 23th Mar 1934 | Box 30 \ 4 Scan130 | |
| Status report on various components for the Spectre 12-cylinder engine. | 23th Mar 1934 | Box 30 \ 4 Scan131 | |
| Status report on modifications and drawings for the Spectre 12-cylinder engine and other car components. | 23th Mar 1934 | Box 30 \ 4 Scan132 | |
| Status report on a limousine comparison, a tank, an air cleaner, and a breather. | 23th Mar 1934 | Box 30 \ 4 Scan133 | |
| Cover note for the fourth fortnightly report on the progress of design work. | 24th Mar 1934 | Box 30 \ 4 Scan134 | |
| Design status report detailing completed and in-progress items for the 20/25 HP chassis. | 24th Mar 1934 | Box 30 \ 4 Scan135 | |
| Design position report listing improvements for a Bentley chassis and their status. | 24th Mar 1934 | Box 30 \ 4 Scan136 | |
| Design progress report for the Spectre chassis components. | 24th Mar 1934 | Box 30 \ 4 Scan137 | |
| Design position status report for the Spectre and Phantom II chassis. | 24th Mar 1934 | Box 30 \ 4 Scan138 | |
| Design status report detailing the progress of engine, chassis, and tank components. | 24th Mar 1934 | Box 30 \ 4 Scan139 | |
| Status report on the design position of various engine components under investigation. | 24th Mar 1934 | Box 30 \ 4 Scan140 | |
| Progress report on modifications for the Goshawk and Merlin engines. | 24th Mar 1934 | Box 30 \ 4 Scan141 | |
| Status report on design modifications for the Merlin, Griffon, and Kestrel engines. | 24th Mar 1934 | Box 30 \ 4 Scan142 | |
| Design status report for various engine components, including the P.V.XII, Buzzard, RR 'A', and RR 'B' engines. | 13th Apr 1934 | Box 30 \ 4 Scan143 | |
| Cover note for the fifth fortnightly report on the progress of design work. | 13th Apr 1934 | Box 30 \ 4 Scan144 | |
| Design status report for 20/25 HP and Bentley chassis components. | 13th Apr 1934 | Box 30 \ 4 Scan145 | |
| Status report on design items for Bentley and Spectre chassis. | 13th Apr 1934 | Box 30 \ 4 Scan146 | |
| Design progress report for the Spectre chassis, listing components and their completion status. | 13th Apr 1934 | Box 30 \ 4 Scan147 | |
| Design position report on various chassis, engine, and tank projects. | 13th Apr 1934 | Box 30 \ 4 Scan148 | |
| Status report on cylinder head investigation and single cylinder research items. | 13th Apr 1934 | Box 30 \ 4 Scan149 | |
| Design status report on sleeve valve and P.V. Goshawk engine components. | 13th Apr 1934 | Box 30 \ 4 Scan150 | |
| Design position status report on modifications for the Goshawk and Merlin engines. | 13th Apr 1934 | Box 30 \ 4 Scan151 | |
| Design position report detailing the status of components for Griffon, Kestrel, and P.V.XII engines. | 13th Apr 1934 | Box 30 \ 4 Scan152 | |
| Design position status report for the Buzzard, 'A', and 'B' (PV.G.II) series engines. | 30th Apr 1934 | Box 30 \ 4 Scan153 | |
| Cover note for the sixth fortnightly report on the progress of design work. | 30th Apr 1934 | Box 30 \ 4 Scan154 | |
| List of design modifications and their status for the 20/25 HP Chassis. | 30th Apr 1934 | Box 30 \ 4 Scan155 | |
| List of design items and their current status for a Bentley Chassis. | 30th Apr 1934 | Box 30 \ 4 Scan156 | |
| Design progress report for the Spectre Chassis components. | 30th Apr 1934 | Box 30 \ 4 Scan157 | |
| Design progress report listing the status of various components for the Spectre and Phantom II chassis. | 30th Apr 1934 | Box 30 \ 4 Scan158 | |
| Design position report on modifications for Phantom II, Vulture, and Mark 'F' Tank components. | 30th Apr 1934 | Box 30 \ 4 Scan159 | |
| Design position report for the Straight '8' 30-HP Engine J.8. | 30th Apr 1934 | Box 30 \ 4 Scan160 | |
| Progress report on cylinder head investigation, research, and development for various engines. | 30th Apr 1934 | Box 30 \ 4 Scan161 | |
| Design position status report on various engine projects, including the P.V. G.II and Goshawk engines. | 30th Apr 1934 | Box 30 \ 4 Scan162 | |
| Design position report detailing the completion status of components for the Kestrel and P.V. XII engines. | 10th May 1934 | Box 30 \ 4 Scan163 | |
| Design work memorandum discussing silent tappets and Phantom II engine mounting. | 10th May 1934 | Box 30 \ 4 Scan164 | |
| Improvements for Bentley exhaust systems, silent tappets, and Textolite gears. | 10th May 1934 | Box 30 \ 4 Scan165 | |
| Design considerations for textolite gears, Bentley clutch, wing/lamp movement, and Phantom suspension. | 10th May 1934 | Box 30 \ 4 Scan166 | |
| Issues and solutions for the Bentley petrol feed, radiator shutters, and front spring shackles. | 10th May 1934 | Box 30 \ 4 Scan167 | |
| Scheme for a Fabroil water pump pinion for a Bentley. | 11th May 1934 | Box 30 \ 4 Scan168 | |
| Blueprint for a self-adjusting tappet for Bentley and 25HP models. | 11th May 1934 | Box 30 \ 4 Scan169 | |
| Scheme for a Fabroil camwheel with balancing cam for a Bentley. | 11th May 1934 | Box 30 \ 4 Scan170 | |
| Progress report on design office work for the 'Kestrel' engine. | 12th May 1934 | Box 30 \ 4 Scan171 | |
| Status report on various design schemes for Kestrel and Goshawk engines. | 12th May 1934 | Box 30 \ 4 Scan172 | |
| Design modification status report for Goshawk and Kestrel engines. | 12th May 1934 | Box 30 \ 4 Scan173 | |
| Status report on design schemes for Griffon and P.V.XII aero engines. | 12th May 1934 | Box 30 \ 4 Scan174 | |
| List of completed and issued detail drawings for P.V.G. Aero Engine components and a general aero engine warning device. | 12th May 1934 | Box 30 \ 4 Scan175 | |
| Progress report on the Merlin Aero Engine and Phantom II Chassis, detailing various gearbox scheme updates and drawing completions. | 12th May 1934 | Box 30 \ 4 Scan176 | |
| List of modifications and drawing statuses for the Phantom II Chassis. | 12th May 1934 | Box 30 \ 4 Scan177 | |
| Progress report on design modifications and drawings for Phantom II and 3½ Litre Bentley chassis and engines. | 12th May 1934 | Box 30 \ 4 Scan178 | |
| Progress report on design schemes and drawings for a 3 1/4 Litre Bentley Chassis. | 12th May 1934 | Box 30 \ 4 Scan179 | |
| List of modifications and drawing status for the 3½ Litre Bentley Chassis. | 12th May 1934 | Box 30 \ 4 Scan180 | |
| List of modifications and updates for the 20/25 HP chassis. | 12th May 1934 | Box 30 \ 4 Scan181 | |
| Progress report detailing issued drawings for the 20/25 HP Chassis and the Spectre 12-Cylinder Engine. | 12th May 1934 | Box 30 \ 4 Scan182 | |
| Progress report on design schemes and drawings for the Spectre 12-Cylinder engine and other vehicle components. | 12th May 1934 | Box 30 \ 4 Scan183 | |
| Log of design and drawing statuses for Spectre 12-Cylinder Engine components. | 12th May 1934 | Box 30 \ 4 Scan184 | |
| Progress report on design schemes for the Spectre 12-Cylinder engine and other car components. | 12th May 1934 | Box 30 \ 4 Scan185 | |
| Log of design modifications and drawing status for various car components. | 12th May 1934 | Box 30 \ 4 Scan186 | |
| Cover note for the seventh fortnightly report on the progress of design work. | 14th May 1934 | Box 30 \ 4 Scan187 | |
| Design position report detailing the status of various components for the 20/25 HP and Bentley chassis. | 14th May 1934 | Box 30 \ 4 Scan188 | |
| List of completed design modifications for Bentley and Spectre chassis. | 14th May 1934 | Box 30 \ 4 Scan189 | |
| Design position report detailing the status of various components for the Spectre project. | 14th May 1934 | Box 30 \ 4 Scan190 | |
| Design position report detailing the status of various items for the Spectre and Phantom II Chassis models. | 14th May 1934 | Box 30 \ 4 Scan191 | |
| Design progress report listing the status of modifications for the Phantom II, Vulture chassis, Mark 'F' tank, and Straight '8' engine. | 14th May 1934 | Box 30 \ 4 Scan192 | |
| Progress report on cylinder head investigation and various engine development projects. | 14th May 1934 | Box 30 \ 4 Scan193 | |
| Design position report detailing the status of modifications for Goshawk, Kestrel, and P.V.XII engines. | 14th May 1934 | Box 30 \ 4 Scan194 | |
| Design position report for the P.V.XII engine detailing the status of specific items. | 1st Jun 1934 | Box 30 \ 4 Scan195 | |
| Cover memo for the eighth fortnightly report on the progress of design work. | 1st Jun 1934 | Box 30 \ 4 Scan196 | |
| Design position report for various items on the 20/25 HP chassis. | 1st Jun 1934 | Box 30 \ 4 Scan197 | |
| Design progress report on Bentley and Spectre chassis components. | 1st Jun 1934 | Box 30 \ 4 Scan198 | |
| Design position report detailing the status of various components for the Spectre Chassis. | 1st Jun 1934 | Box 30 \ 4 Scan199 | |
| Design position status report for various chassis components. | 1st Jun 1934 | Box 30 \ 4 Scan200 | |
| Design position report for Phantom II chassis and Straight '8' engine components. | 1st Jun 1934 | Box 30 \ 4 Scan201 | |
| Status report on design investigations for the Straight '8' 30-HP Engine, Mark 'F' Tank, and a single-cylinder unit. | 1st Jun 1934 | Box 30 \ 4 Scan202 | |
| Design position report for components of the P.V.G.I, P.V.G.II, and Goshawk aero engines. | 1st Jun 1934 | Box 30 \ 4 Scan203 | |
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