| Description | Date | Identifier | |
| New procedure for boring the Wraith crankcase to incline the bottom tappets. | 10th Aug 1937 | Box 132 \ 3 scan0071 | |
| Decisions and further alterations required for the Wraith III crankcase pattern to reach its final production form. | 12th Aug 1937 | Box 132 \ 3 scan0072 | |
| Drawing of the Wraith III crankcase, detailing the wheelcase and clutch case contours. | 17th Aug 1937 | Box 132 \ 3 scan0073 | |
| Instructions and drawing list for a crankcase conversion experiment on the Wraith III chassis. | 17th Aug 1937 | Box 132 \ 3 scan0074 | |
| Listing new blue prints for the Phantom III Chassis relating to the standardization of solid rockers. | 26th Aug 1937 | Box 132 \ 3 scan0075 | |
| Modifications to the Wraith III front crankcase facing and related components. | 28th Aug 1937 | Box 132 \ 3 scan0076 | |
| Modifications to the Wraith III's rear crankcase flange, clutch casing, and pedals. | 28th Aug 1937 | Box 132 \ 3 scan0077 | |
| Instructions for the production of 6 sets of Wheelcase & Fittings for the Wraith III Chassis. | 16th Oct 1937 | Box 132 \ 3 scan0078 | |
| List of tracings for the Wraith III Chassis crankcase and bearings, for revision or addition of operations. | 26th Oct 1937 | Box 132 \ 3 scan0079 | |
| Continued list of engine components with part numbers and a production instruction. | 26th Oct 1937 | Box 132 \ 3 scan0080 | |
| Request to modify the Wraith III crankcase pattern, reverting from stud bosses to bolts. | 29th Oct 1937 | Box 132 \ 3 scan0081 | |
| The replacement of tracings for the Wraith III Chassis crankcase and bearings. | 12th Nov 1937 | Box 132 \ 3 scan0082 | |
| Simplification and foundry economies of removing water connection passages from the Phantom 111 upper crankcase. | 21th Dec 1937 | Box 132 \ 3 scan0083 | |
| Revised torque reaction damper for a Wraith III to suit a modified crankcase. | 18th Jan 1938 | Box 132 \ 3 scan0084 | |
| Confirming a hold on scheme ECD.396 for the Wraith III revised torque reaction damper, pending experimentation with a rubber replacement. | 20th Jan 1938 | Box 132 \ 3 scan0085 | |
| Deletion of the front engine support feet for the Wraith III crankcase. | 11th Feb 1938 | Box 132 \ 3 scan0086 | |
| Fitment of bearing caps on a Wraith crankcase. | 15th Feb 1938 | Box 132 \ 3 scan0087 | |
| Request to modify the Wraith III crankcase to improve clearance for a box spanner. | 2nd Mar 1938 | Box 132 \ 3 scan0088 | |
| Instructions for modifying a Bentley III engine to accommodate thin strip bearings. | 5th Mar 1938 | Box 132 \ 3 scan0089 | |
| Box spanner clearances for the Wraith III crankcase and requesting modifications. | 7th Mar 1938 | Box 132 \ 3 scan0090 | |
| Blueprint comparing box spanner clearances for the 25/30 & Bentley II against the Wraith & Bentley III models. | 10th Mar 1938 | Box 132 \ 3 scan0091 | |
| The design and specifications for the Bentley 50 crankcase and crankshaft. | 10th Mar 1938 | Box 132 \ 3 scan0092 | |
| Drawing for the Bentley 50 Crankcase & Bearings. | 10th Mar 1938 | Box 132 \ 3 scan0093 | |
| Modification to the Wraith III crankcase for a new box spanner. | 15th Mar 1938 | Box 132 \ 3 scan0094 | |
| Spanner clearances for the Wraith III crankcase, criticizing the supplied box spanner and advising against minimal clearances. | 21th Mar 1938 | Box 132 \ 3 scan0095 | |
| Alterations to the Phantom III crankcase and crankshaft for a 15,000 miles test car. | 2nd May 1938 | Box 132 \ 3 scan0096 | |
| Instruction to make the crankcase and bearings for the Wraith 'B' Series (101-300) without liners or shims. | 3rd May 1938 | Box 132 \ 3 scan0097 | |
| Instruction for a revised mounting for the A.C. Filter on the Wraith III and Bentley III chassis, detailing new and obsolete parts. | 16th May 1938 | Box 132 \ 3 scan0098 | |
| Confirming the manufacturing feasibility of connection E.76930 as a hot brass pressing and outlining cost savings. | 27th Jun 1938 | Box 132 \ 3 scan0099 | |
| New design for a crankcase rear end cover and oil retainer for the Wraith III. | 28th Jun 1938 | Box 132 \ 3 scan0100 | |
| Comparison of the time, metal removal, and tool changes for drilling the Wraith versus Bentley crankcase top half. | 7th Jul 1938 | Box 132 \ 3 scan0101 | |
| Analysis of the Wraith Crankcase manufacturing process, detailing increased operating time and costs and proposing design simplification. | 2nd Aug 1938 | Box 132 \ 3 scan0102 | |
| Casting issues with the Phantom III crankcase and a proposed redesign. | 2nd Aug 1938 | Box 132 \ 3 scan0103 | |
| Instructions regarding new drawings for a modified camshaft and barrel type tappets for the Bentley III and Wraith III chassis. | 3rd Sep 1938 | Box 132 \ 3 scan0104 | |
| Parts update notification for the Bentley III and 25/30 HP Chassis, detailing new drawings and required/obsolete parts for the oil system. | 9th Aug 1938 | Box 132 \ 3 scan0105 | |
| Continuation page listing parts required for Section S200. | 9th Aug 1938 | Box 132 \ 3 scan0106 | |
| Tests on crankcase ventilation to reduce acidity, corrosion, and oil leaks, with a suggested modification for B.III and Wraith models. | 16th Sep 1938 | Box 132 \ 3 scan0107 | |
| Crankcase ventilation tests conducted on Oldsmobile and Wraith engines. | 14th Sep 1938 | Box 132 \ 3 scan0108 | |
| Various breather pipe modifications and their effect on crankcase pressure. | 14th Sep 1938 | Box 132 \ 3 scan0109 | |
| Half-size scale blueprint of a Venturi Breather for a crankcase. | 14th Sep 1938 | Box 132 \ 3 scan0110 | |
| Blueprint diagram illustrating a modification to an existing breather pipe assembly. | 10th Aug 1938 | Box 132 \ 3 scan0111 | |
| Graph plotting gas flow through an Oldsmobile extractor breather against speed under three different inlet conditions. | 10th Aug 1938 | Box 132 \ 3 scan0112 | |
| Graph plotting Oldsmobile crankcase pressure in inches of water against speed in M.P.H. under four different test conditions. | 10th Aug 1938 | Box 132 \ 3 scan0113 | |
| Graph comparing crankcase breather pressures at various speeds for different breather configurations. | 30th Aug 1938 | Box 132 \ 3 scan0114 | |
| Parts list for a simplified oil filter modification on a Wraith III chassis, requesting a cost comparison against the replaced parts. | 30th Nov 1938 | Box 132 \ 3 scan0115 | |
| Continuation of a parts list for section 5000, detailing a nut and a joint washer. | 30th Nov 1938 | Box 132 \ 3 scan0116 | |
| List of parts and blueprints for the Wraith III chassis crankcase, bearings, and oil filter. | 6th Dec 1938 | Box 132 \ 3 scan0117 | |
| List of parts that are no longer required, resulting in a cost saving per chassis. | 6th Dec 1938 | Box 132 \ 3 scan0118 | |
| Lack of a Packard type crank for a Phantom III and a preference for Bowers' recommendation on balance weights. | 10th Dec 1938 | Box 132 \ 3 scan0119 | |
| Parts list for the Wraith III Crankcase, Dynamo Drive, and Wheelcase & Fittings. | 4th Jan 1939 | Box 132 \ 3 scan0120 | |
| Request for the cost of replacement parts, including a wheelcase, crankcase, and stud. | 4th Jan 1939 | Box 132 \ 3 scan0121 | |
| Crankcase and clutch cone for the Bentley 5 experimental production chassis. | 26th Jan 1939 | Box 132 \ 3 scan0122 | |
| Crankcase modification and required parts for the Bentley V chassis. | 17th May 1939 | Box 132 \ 3 scan0123 | |
| Purchase order be sent to Messrs Pickford for two crankshaft dampers. | 22th Feb 1940 | Box 132 \ 3 scan0124 | |
| Dispatch of blueprints for RE.112 and a pending modification for RE.107. | 27th Feb 1940 | Box 132 \ 3 scan0125 | |
| Alteration note for crankcase and cylinders detailing dimensional changes. | 15th Mar 1940 | Box 132 \ 3 scan0126 | |
| Alterations to the hole for the water rail on the wheelcase end, including dimensional changes and the reasons for modification. | 15th Mar 1940 | Box 132 \ 3 scan0127 | |
| Alteration note to remove surplus metal from the exhaust port due to casting build-up. | 21th Mar 1940 | Box 132 \ 3 scan0128 | |
| Alteration note for a B40 3.500 Bore engine's crankcase and cylinders. | 21th Mar 1940 | Box 132 \ 3 scan0129 | |
| The distribution of two new blueprints for a Front Bearing Bush and a Stud for the Tappet Cover. | 18th Mar 1940 | Box 132 \ 3 scan0130 | |
| Sending of blueprints for a water gallery and cylinder head joint washer. | 18th Mar 1940 | Box 132 \ 3 scan0131 | |
| Blueprints for the B.60 75 M/M Bore crankcase and cylinders. | 20th Mar 1940 | Box 132 \ 3 scan0132 | |
| Accompanying preliminary blueprints for a B. 60. 3.500 Bore crankcase and cylinders. | 20th Mar 1940 | Box 132 \ 3 scan0133 | |
| New pattern for a rationalised six-cylinder engine crank-case. | 28th Mar 1940 | Box 132 \ 3 scan0134 | |
| Alteration notice for the Crankcase & Cylinders Lop, replacing Tappet Cover EB4777 with RE 798. | 4th Apr 1940 | Box 132 \ 3 scan0135 | |
| Cover sheet listing blueprints for B. 80 Alum Engine components. | 9th Apr 1940 | Box 132 \ 3 scan0136 | |
| Alteration notice for the B.80 crankcase and cylinders, specifying the width of camshaft bosses. | 10th Apr 1940 | Box 132 \ 3 scan0137 | |
| Request sent to Messrs. Rotax Ltd. for a service and spare manual for a Direct Cranking Starter Motor, Type E 160 C. | 22th Nov 1940 | Box 132 \ 3 scan0138 | |
| Scuttle isolation for Bensport, referencing schedule number 3486. | 9th Jun 1932 | Box 132 \ 3 scan0139 | |
| Design of the Bensport dashboard casting and its fixing to the frame. | 10th Sep 1932 | Box 132 \ 3 scan0140 | |
| Design changes to the sloping footboard for the Bensport model. | 12th Oct 1932 | Box 132 \ 3 scan0141 | |
| Modifications to the front floorboards and gearbox tower for a Bensport (B.3.) vehicle. | 22th Nov 1932 | Box 132 \ 3 scan0142 | |
| Drawings for the Bensport front floor, modified to accommodate the J.L. engine. | 24th Nov 1932 | Box 132 \ 3 scan0143 | |
| Issue with the rubber beading on a Bentley dashboard and proposing a solution using clips. | 13th Jul 1933 | Box 132 \ 3 scan0144 | |
| Standardisation report for a magnesium dashboard and clutch pit to save weight. | 9th Sep 1935 | Box 132 \ 3 scan0145 | |
| Cost comparison analysis for old and new Dashboard and Clutch Casing parts, detailing material, labour, and other charges. | 28th Jun 1935 | Box 132 \ 3 scan0146 | |
| Relocation of the 'Datum Back of Dash' line for the Wraith II model. | 1st Jul 1936 | Box 132 \ 3 scan0147 | |
| Modifications for the Wraith II dashboard, comparing its components and design to the Phantom III. | 15th Jul 1936 | Box 132 \ 3 scan0148 | |
| Method for holding rubber on the Bentley Dashboard, proposing a switch to Ferodo bonnet rests. | 17th Nov 1936 | Box 132 \ 3 scan0149 | |
| The standardization of the Ferodo bonnet rest scheme for Bentley vehicles. | 8th Dec 1936 | Box 132 \ 3 scan0150 | |
| The fitting of aluminium bonnet rest angles to the Wraith II dashboard. | 14th Jan 1937 | Box 132 \ 3 scan0151 | |
| Instructions regarding the production of a modified bonnet rest with wider interlacing strip for the Phantom III dashboard. | 19th Jan 1937 | Box 132 \ 3 scan0152 | |
| Request to despatch a model of a Bentley Scuttle to Mr. J. L. Evans at Lillie Hall. | 17th Mar 1937 | Box 132 \ 3 scan0153 | |
| Confirming the dispatch of a half section of the Bentley scuttle. | 17th Mar 1937 | Box 132 \ 3 scan0154 | |
| Modifications to the Wraith III dash brackets and accelerator pedal assembly. | 20th Apr 1937 | Box 132 \ 3 scan0155 | |
| Service complaint memo regarding Bentley instrument lighting, specifically a dark patch on the speedometer. | 20th May 1937 | Box 132 \ 3 scan0156 | |
| The testing of a wider Bentley dashboard and its potential standardisation. | 25th Jun 1937 | Box 132 \ 3 scan0157 | |
| Use of a Bentley III dashboard on the current Bentley chassis, questioning its necessity and benefit. | 2nd Jul 1937 | Box 132 \ 3 scan0158 | |
| Modified dashboard layout including component placement and cost savings. | 28th Sep 1937 | Box 132 \ 3 scan0159 | |
| Scheme document for the dashboard casting of the Bentley 111. | 7th Oct 1937 | Box 132 \ 3 scan0160 | |
| Requesting an order for six sets of parts for the oil tank on the dash of a Wraith III chassis. | 13th Oct 1937 | Box 132 \ 3 scan0161 | |
| List of blueprint and production parts for a Wraith Dashboard modification. | 15th Oct 1937 | Box 132 \ 3 scan0162 | |
| Requesting an order for 6 sets of dashboard and fitting parts for the Wraith III chassis. | 3rd Nov 1937 | Box 132 \ 3 scan0163 | |
| The Bentley 111 dashboard casting for a dropped frame. | 5th Nov 1937 | Box 132 \ 3 scan0164 | |
| Reduction of cost for the Bentley III dashboard by switching materials. | 26th Nov 1937 | Box 132 \ 3 scan0165 | |
| Modification to the Bentley dashboard, involving the deletion of cast beading. | 14th Jan 1938 | Box 132 \ 3 scan0166 | |
| Scheme detailing the left hand dash bracket and ramp board support for the Bentley 111 chassis. | 21th Jan 1938 | Box 132 \ 3 scan0167 | |
| Scheme detailing the arrangement of the engine side of the dashboard for a Bentley 111. | 21th Jan 1938 | Box 132 \ 3 scan0168 | |
| The modifications to the dashboard layout for the Wraith III model. | 26th Jan 1938 | Box 132 \ 3 scan0169 | |
| Request to Park Ward & Co. Ltd. for dashboard material and leather for a Grey Bentley. | 17th Feb 1938 | Box 132 \ 3 scan0170 | |
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