| Description | Date | Identifier | |
| Letter discussing putting production work on the recipient's plate during the war. | 22th May 1941 | Box 109 \ 3 scan0124 | |
| The material specification and production of camshafts for the M.40 engine. | 22th May 1941 | Box 109 \ 3 scan0125 | |
| Requesting material specifications for drawings and providing instructions on new camshafts. | 22th May 1941 | Box 109 \ 3 scan0126 | |
| Meeting notes detailing agreed modifications to components for the M.40 test rig following a conference. | 31th Mar 1941 | Box 109 \ 3 scan0127 | |
| Meeting notes discussing design changes and agreements for various engine components. | 31th Mar 1941 | Box 109 \ 3 scan0128 | |
| Meeting minutes detailing design decisions and amendments for various components. | 31th Mar 1941 | Box 109 \ 3 scan0129 | |
| List of agreed amendments for various engine components, including rocker cover studs, bearing caps, and cylinder heads. | 31th Mar 1941 | Box 109 \ 3 scan0130 | |
| Design amendments and material changes for various engine components. | 31th Mar 1941 | Box 109 \ 3 scan0131 | |
| Decision to delete the undercut on the RE.1903 Cylinder Head Locating Stud. | 31th Mar 1941 | Box 109 \ 3 scan0132 | |
| Specification for the M.40 Test Rig's Type I.M. by-pass filter and fittings, including a list of parts and suppliers. | 21th Apr 1941 | Box 109 \ 3 scan0133 | |
| Alterations and comments on various components of the M.40 test rig engine. | 1st May 1941 | Box 109 \ 3 scan0134 | |
| Re-issuing of a connecting rod and cap detail and an omission regarding a stud-tappet cover. | 1st May 1941 | Box 109 \ 3 scan0135 | |
| Production requirements and material specifications for M.40 engine camshafts, including hardening methods. | 26th May 1941 | Box 109 \ 3 scan0136 | |
| Parts for the M.40 Test Rig, focusing on the frame, front pan, and handbrake. | 27th May 1941 | Box 109 \ 3 scan0137 | |
| 'Myth' project exhaust system and suspension bracket attachment. | 5th Jun 1941 | Box 109 \ 3 scan0138 | |
| The detailing of support parts for the bump and rebound buffers on the M.40 Test Rig. | 6th Jun 1941 | Box 109 \ 3 scan0139 | |
| Letter to The Pressed Steel Company regarding a print for a bump and rebound buffer bracket for the Myth chassis. | 6th Jun 1941 | Box 109 \ 3 scan0140 | |
| Letter to Vandervell Products Ltd. regarding revised prints for Camshaft Bearings for the M.40 Test Rig. | 12th Jun 1941 | Box 109 \ 3 scan0141 | |
| Progress report on the Senior Range Rationalised Chassis, detailing mileage statistics and gearbox faults. | 14th Jun 1941 | Box 109 \ 3 scan0142 | |
| Progress report on the development and testing of various vehicle components. | 15th Jun 1941 | Box 109 \ 3 scan0143 | |
| Issues with petrol consumption, cylinder bore wear, and bearing failures. | 15th Jun 1941 | Box 109 \ 3 scan0144 | |
| Progress report on engine testing, manufacturing, and the development of a 'Myth' chassis. | 15th Jun 1941 | Box 109 \ 3 scan0145 | |
| The development of larger four-cylinder engines and the performance of other small cars. | 15th Jun 1941 | Box 109 \ 3 scan0146 | |
| Interim report on the general performance and durability of small cars from Vauxhall, Austin, Morris, and Studebaker. | 30th Mar 1941 | Box 109 \ 3 scan0147 | |
| Vehicle component failures, engine wear, and a comparison of oil and petrol consumption against competitor cars. | 30th May 1941 | Box 109 \ 3 scan0148 | |
| Specification and status update on outstanding designs required for the Myth 1st Car. | 15th Jun 1941 | Box 109 \ 3 scan0149 | |
| Progress report on the design and detailing status of various vehicle components. | 15th Jun 1941 | Box 109 \ 3 scan0150 | |
| Status report on the design and drawing issuance for various vehicle components. | 15th Jun 1941 | Box 109 \ 3 scan0151 | |
| M.40 Test Rig camshaft lubrication, detailing bearing oil feed hole modifications and alternative test options. | 17th Jun 1941 | Box 109 \ 3 scan0152 | |
| Letter to Messrs. Wilmot-Breeden Ltd. regarding a revised list of parts for Myth. | 17th Jun 1941 | Box 109 \ 3 scan0153 | |
| Listing issued sections and components for the 'Myth Chassis'. | 24th Jun 1941 | Box 109 \ 3 scan0154 | |
| Parts list for a Test Rig concerning the Front Roll Rod and Bump Bracket. | 24th Jun 1941 | Box 109 \ 3 scan0155 | |
| Parts list continuation memo detailing additions and quantities for various sections. | 24th Jun 1941 | Box 109 \ 3 scan0156 | |
| Confirming the dispatch of blueprints and parts for a M.40 Test Rig Front Stabiliser. | 26th Jun 1941 | Box 109 \ 3 scan0157 | |
| Blueprints for new parts issued for an M.40 Test Rig's exhaust-heated induction system. | 27th Mar 1941 | Box 109 \ 3 scan0158 | |
| The M.40 Test Rig, specifically the Pendulum Lever part RF.2525 and its relation to steering components. | 27th Jun 1941 | Box 109 \ 3 scan0159 | |
| Parts list for the M.40 Test Rig, PL.504 Handbrake Lever & Mechanism. | 30th Jun 1941 | Box 109 \ 3 scan0160 | |
| List of previously issued parts being sent with instructions. | 30th Jun 1941 | Box 109 \ 3 scan0161 | |
| Altered blueprints for a pressed steel wheel section. | 1st Jul 1941 | Box 109 \ 3 scan0162 | |
| Letter to Messrs. Park Ward Ltd. enclosing prints for a Radiator Baffle and Shell, and notifying them of a design modification to the sliding roof. | 4th Jul 1941 | Box 109 \ 3 scan0163 | |
| Specification sheet for the 'Myth' project, listing components and their designated suppliers. | 4th Jul 1941 | Box 109 \ 3 scan0164 | |
| List of vehicle components and their respective suppliers or manufacturers. | 2nd Apr 1941 | Box 109 \ 3 scan0165 | |
| Specification sheet for the 'Myth (1st Car)' prototype, reference PL532. | 2nd Apr 1941 | Box 109 \ 3 scan0166 | |
| Specification sheet detailing engine components, their materials, and associated design numbers. | 7th Feb 1940 | Box 109 \ 3 scan0167 | |
| Specification sheet detailing engine components and their respective design numbers and remarks. | 7th Feb 1940 | Box 109 \ 3 scan0168 | |
| Specification sheet detailing various vehicle components and their associated design numbers. | 7th Feb 1940 | Box 109 \ 3 scan0169 | |
| Specification sheet detailing various vehicle components and their design references. | 7th Feb 1940 | Box 109 \ 3 scan0170 | |
| Specification sheet detailing chassis and drivetrain components with their corresponding design numbers. | 7th Feb 1940 | Box 109 \ 3 scan0171 | |
| Specification sheet for vehicle parts, issue 2, sheet 7. | 7th Feb 1940 | Box 109 \ 3 scan0172 | |
| Specification sheet detailing various vehicle components, their design numbers, and related remarks. | 7th Feb 1940 | Box 109 \ 3 scan0173 | |
| Specification sheet detailing vehicle components such as shock dampers, instrument boards, and tools. | 7th Feb 1940 | Box 109 \ 3 scan0174 | |
| Specification sheet listing various electrical and mechanical parts. | 7th Feb 1940 | Box 109 \ 3 scan0175 | |
| Specification sheet for various electrical components including switch boxes, distribution boards, and lamps. | 7th Feb 1940 | Box 109 \ 3 scan0176 | |
| Misunderstanding of the flame hardening process for an M.40 engine, requesting chill hardened shafts as an alternative. | 29th May 1941 | Box 109 \ 3 scan0177 | |
| Specification document outlining the work required to complete the first 'Myth' chassis. | 15th Jun 1941 | Box 109 \ 3 scan0178 | |
| Continued list of vehicle components and their associated suppliers or manufacturers. | 15th Jun 1941 | Box 109 \ 3 scan0179 | |
| The bought-out parts for the M.40 Test Rig. | 2nd Jul 1941 | Box 109 \ 3 scan0180 | |
| Outlining details for the Front Stabiliser, dynamo, distributor, and starter motor sections. | 2nd Jul 1941 | Box 109 \ 3 scan0181 | |
| Agreements on the manufacture and modification of various parts for the M.40 Test Rig. | 3rd Jul 1941 | Box 109 \ 3 scan0182 | |
| Distributing blueprints for new water connection parts for the M.40 Test Rig. | 9th Jul 1941 | Box 109 \ 3 scan0183 | |
| Design history and production modifications of M.40 and B.60 tappets. | 19th Jul 1941 | Box 109 \ 3 scan0184 | |
| Comparison of two cross-sectional diagrams, (a) and (b), of a component, possibly a bearing. | 11th Sep 1941 | Box 109 \ 3 scan0185 | |
| Blueprints and parts for a Prop Shaft & Joints on the M.40 Test Rig. | 11th Sep 1941 | Box 109 \ 3 scan0186 | |
| Parts list and memo regarding prints for the M.40 Test Rig front axle assembly. | 16th Aug 1941 | Box 109 \ 3 scan0187 | |
| Costs for a carburettor modification due to overheating. | 31th Jul 1931 | Box 109 \ 3 scan0188 | |
| Letter to Park Ward & Co. regarding body mounting parts for the 'Myth' project. | 19th Aug 1941 | Box 109 \ 3 scan0189 | |
| Letter to John Marston Ltd. regarding the dispatch of adaptors for M.40 radiators. | 19th Aug 1941 | Box 109 \ 3 scan0190 | |
| The parts and blueprints required for the M.40 Test Rig, specifically for the front brakes and pivot. | 20th Aug 1941 | Box 109 \ 3 scan0191 | |
| Parts required for the M.40 Test Rig's rear brakes, including a list of parts to be supplied. | 20th Aug 1941 | Box 109 \ 3 scan0192 | |
| Concluding instructions regarding the use of standard parts from LOP for a specific section. | 20th Aug 1941 | Box 109 \ 3 scan0193 | |
| Distributing prints for the M.40 Test Rig frame and fittings. | 21th Aug 1941 | Box 109 \ 3 scan0194 | |
| Design and features of instrument boards for the 'Myth' post-war car. | 21th Aug 1941 | Box 109 \ 3 scan0195 | |
| Requesting an order for various brake parts for the M.40 Test Rig. | 22th Aug 1941 | Box 109 \ 3 scan0196 | |
| Design and storage requirements for the Myth chassis starting handle. | 22th Aug 1941 | Box 109 \ 3 scan0197 | |
| Parts list for the rear brakes, linkages, and equaliser for the M.40 test rig. | 22th Aug 1941 | Box 109 \ 3 scan0198 | |
| Parts required for the M.40 Test Rig Starting Handle. | 29th Aug 1941 | Box 109 \ 3 scan0199 | |
| Comparing two different propeller shaft specifications for the 'Myth' chassis, including a table of whirling speeds. | 1st Sep 1941 | Box 109 \ 3 scan0200 | |
| List of parts and blueprint request for the M.40 Test Rig steering column and box. | 12th Sep 1941 | Box 109 \ 3 scan0201 | |
| Instructions for ordering steering column, horn button, dip switch, and steering wheel components. | 12th Sep 1941 | Box 109 \ 3 scan0202 | |
| New drawing print for a steering wheel on the M.40 Test Rig. | 13th Sep 1941 | Box 109 \ 3 scan0203 | |
| Letter to Messrs. Park Ward Ltd. enclosing a list of technical prints in duplicate. | 13th Sep 1941 | Box 109 \ 3 scan0204 | |
| Progress update memo concerning delays on two experimental 'Myth' chassis. | 14th Sep 1941 | Box 109 \ 3 scan0205 | |
| Design and manufacturing of a steering wheel with a cast iron hub. | 3rd Oct 1941 | Box 109 \ 3 scan0206 | |
| The modification of a steering wheel to incorporate a cast aluminium hub. | 3rd Oct 1941 | Box 109 \ 3 scan0207 | |
| Letter to Burman & Sons Ltd. apologizing for a delay and clarifying steering column details with an attached print. | 10th Oct 1941 | Box 109 \ 3 scan0208 | |
| M.40 Test Rig, Front Axle, providing prints for a bearing pin. | 16th Oct 1941 | Box 109 \ 3 scan0209 | |
| The dispatch of prints for modified front and rear hubs, replacing older parts. | 10th Nov 1941 | Box 109 \ 3 scan0210 | |
| Drawings and production of steering column components. | 26th Nov 1941 | Box 109 \ 3 scan0211 | |
| Modifications and a new clamping method for front and rear bumper brackets. | 26th Nov 1941 | Box 109 \ 3 scan0212 | |
| The drawings and production for a 'Myth' steering column. | 26th Nov 1941 | Box 109 \ 3 scan0213 | |
| Modifications and a clamping method for front and rear bumper brackets. | 26th Nov 1941 | Box 109 \ 3 scan0214 | |
| Letter to Messrs. Park Ward, Ltd. regarding prints for outstanding items related to the petrol filler. | 3rd Dec 1941 | Box 109 \ 3 scan0215 | |
| Adjustable camshaft thrust washers for the M.40 Test Rig. | 6th Dec 1941 | Box 109 \ 3 scan0216 | |
| Cancellation and replacement of steering wheel parts due to wartime manufacturing difficulties. | 9th Dec 1941 | Box 109 \ 3 scan0217 | |
| Outstanding chassis work, focusing on a stiffened front cross member and a larger petrol tank for the B.5 model. | 23th Dec 1941 | Box 109 \ 3 scan0218 | |
| Delay in supplying a windscreen template to Perfecta Motor Equipment Ltd. | 24th Dec 1941 | Box 109 \ 3 scan0219 | |
| Specification document for the Myth Engine No.1, detailing components for the crankcase, bearings, and crankshaft. | 31th Dec 1941 | Box 109 \ 3 scan0220 | |
| List of parts and specifications for Crankshaft, Connecting Rods, Pistons, and Cylinder Head. | 31th Dec 1941 | Box 109 \ 3 scan0221 | |
| List of specifications and part numbers for various engine components. | 31th Dec 1941 | Box 109 \ 3 scan0222 | |
| List of parts and specifications for the camshaft, water pump, fan, oil pump, and wheelcase fittings. | 31th Dec 1941 | Box 109 \ 3 scan0223 | |
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