| Description | Date | Identifier | |
| Instructions and drawing list for oil fittings on a Bentley 60 Chassis with a cast iron engine. | 12th Jul 1938 | Box 123 \ 5 scan0030 | |
| Stiffening the B.60 camwheel for Bentley 60 timing gears and putting a hold on ordering the bakelite part mould. | 13th Jul 1938 | Box 123 \ 5 scan0031 | |
| New blueprints for the Bentley 60 Chassis crankcase and bearings. | 14th Jul 1938 | Box 123 \ 5 scan0032 | |
| Notification regarding new blueprint drawings for the Bentley 60 Chassis (Cast Iron Engine) camshaft forms. | 15th Jul 1938 | Box 123 \ 5 scan0033 | |
| Camshaft forms and flywheel timing marks for the Bentley 60 Chassis with a cast iron engine. | 18th Jul 1938 | Box 123 \ 5 scan0034 | |
| Requesting a detailed drawing for an experimental Induction Pipe for the Straight 8 engine. | 19th Jul 1938 | Box 123 \ 5 scan0035 | |
| Blueprints for the Bentley 80 Chassis, 8-cylinder cast iron engine crankcase and bearings. | 22th Jul 1938 | Box 123 \ 5 scan0036 | |
| List of points for consideration regarding the design of the B.60 engine cylinder head. | 22th Jul 1938 | Box 123 \ 5 scan0037 | |
| Proposed modifications to a cylinder head, including hole sizes and dowel positions. | 5th Aug 1938 | Box 123 \ 5 scan0038 | |
| Sluggish engine pick-up due to petrol pooling at the inlet port and a related casting issue. | 11th Aug 1938 | Box 123 \ 5 scan0039 | |
| Production facilitation points for the B.60 engine block. | 20th Jul 1938 | Box 123 \ 5 scan0040 | |
| Secret memo regarding detail drawings of the Straight 8 cylinder block and crankcase, and a request to discuss the creation of the patterns. | 22th Jul 1938 | Box 123 \ 5 scan0041 | |
| Design change for the B.50 engine camshaft bearings from stepped to single diameter. | 28th Jul 1938 | Box 123 \ 5 scan0042 | |
| Letter from Vandervell Products Ltd. discussing the accepted practice for fitting Camshaft Bearings. | 27th Jul 1938 | Box 123 \ 5 scan0043 | |
| Provision of blueprints for a Bentley B80 Chassis (C.I. Engine) cylinder head. | 9th Aug 1938 | Box 123 \ 5 scan0044 | |
| New blueprints for a Camshaft for the Bentley B80 Chassis. | 11th Aug 1938 | Box 123 \ 5 scan0045 | |
| Scheme for incorporating an oil cooler into a B.60 engine unit for test bed use. | 11th Aug 1938 | Box 123 \ 5 scan0046 | |
| Patent position and potential infringement for a Bentley 60 cylinder head design. | 11th Aug 1938 | Box 123 \ 5 scan0047 | |
| Internal memorandum discussing potential patent infringement and design specifications for combustion chambers. | 11th Aug 1938 | Box 123 \ 5 scan0048 | |
| Requesting blueprints for induction pipes and packing blocks for research on a straight 8 engine. | 12th Aug 1938 | Box 123 \ 5 scan0049 | |
| 'General' type bye-pass filter for the Bentley 60 engine. | 15th Aug 1938 | Box 123 \ 5 scan0050 | |
| Instructions and new drawings for the Bentley BO Chassis (Cast Iron Engine) valves, fittings, and cylinder head. | 15th Aug 1938 | Box 123 \ 5 scan0051 | |
| Five key features of the B.60 cylinder head for inclusion in a patent application. | 15th Aug 1938 | Box 123 \ 5 scan0052 | |
| 'General' type bye-pass filter for the Bentley 60 engine as an alternative to the 'A.C.' type filter. | 15th Aug 1938 | Box 123 \ 5 scan0053 | |
| Blueprints for new drawings related to the Bentley 80 Chassis cast iron engine. | 15th Aug 1938 | Box 123 \ 5 scan0054 | |
| Blueprints for a Bentley 80 Chassis cast iron engine cylinder head and joint washer. | 17th Aug 1938 | Box 123 \ 5 scan0055 | |
| New drawings and List of Parts for the Wheelcase section of a Bentley 80 Chassis. | 17th Aug 1938 | Box 123 \ 5 scan0056 | |
| The need to vent steam pockets in the B-60 cylinder block. | 17th Aug 1938 | Box 123 \ 5 scan0057 | |
| Request for a cost figure for the patterns of a cast iron cylinder block-cum-crankcase unit. | 18th Aug 1938 | Box 123 \ 5 scan0058 | |
| Blueprints for new drawings related to the Bentley 80 Chassis Thermostat and Bye-Pass. | 19th Aug 1938 | Box 123 \ 5 scan0059 | |
| Pattern costs for a Bentley 60 Cast Iron Cylinder Block and crankcase. | 19th Aug 1938 | Box 123 \ 5 scan0060 | |
| Instructions regarding new drawings and part replacements for the Bentley GO Chassis (Cast Iron Engine). | 22th Aug 1938 | Box 123 \ 5 scan0061 | |
| Instruction to supply blueprints for a 'Bump Crown' piston to increase the compression ratio for a B.60 Chassis. | 23th Aug 1938 | Box 123 \ 5 scan0062 | |
| Parts list and instructions for modifying a B.60 engine test bed unit with an oil cooler. | 23th Sep 1938 | Box 123 \ 5 scan0063 | |
| Agreements on the B.60 Block design, including oil hole placement and camshaft tolerances. | 23th Aug 1938 | Box 123 \ 5 scan0064 | |
| Modifications and new drawings for the Bentley 60 Chassis cast iron engine's crankcase. | 24th Aug 1938 | Box 123 \ 5 scan0065 | |
| Letter from Ferodo Limited confirming the dispatch of six sample fan belts from two different moulds. | 26th Aug 1938 | Box 123 \ 5 scan0066 | |
| Application of raised crown pistons to a single cylinder unit. | 26th Aug 1938 | Box 123 \ 5 scan0067 | |
| Instructions for the front engine mounting for the first B.60 engine in a Bentley 60. | 29th Aug 1938 | Box 123 \ 5 scan0068 | |
| New drawings and part replacements for the Bentley 60 Chassis Cast Iron Engine. | 30th Aug 1938 | Box 123 \ 5 scan0069 | |
| Part changes and references for various engine sections. | 30th Aug 1938 | Box 123 \ 5 scan0070 | |
| The official ordering of 'Ferogrip' fan belts for B.60 engines. | 30th Aug 1938 | Box 123 \ 5 scan0071 | |
| Request to issue a detail for .4 carbon steel inlet valve push rods for the Bentley 60 engine. | 1st Sep 1938 | Box 123 \ 5 scan0072 | |
| Requesting the fabrication of a drive shaft to test crankshaft oscillation on a B.60 unit. | 2nd Sep 1938 | Box 123 \ 5 scan0073 | |
| Requesting official orders to be placed for B.60 engine components with Vandervell Products Ltd. | 3rd Sep 1938 | Box 123 \ 5 scan0074 | |
| The procurement of rocker bushes from Vandervells for B.60 and B.80 units. | 3rd Sep 1938 | Box 123 \ 5 scan0075 | |
| Instruction regarding new drawings and a List of Parts for the Bentley 60 Chassis connecting rod. | 3rd Sep 1938 | Box 123 \ 5 scan0076 | |
| Correct Vee angle for belt pulleys on the Bentley B.60 engine. | 5th Sep 1938 | Box 123 \ 5 scan0077 | |
| Specification sheet detailing pulley dimensions including V-belt angles and widths. | 6th Sep 1938 | Box 123 \ 5 scan0078 | |
| Instruction regarding new drawings for bushed rockers for the Bentley 60 Chassis. | 6th Sep 1938 | Box 123 \ 5 scan0079 | |
| B.60 engine's heavy oil filler and a proposed modification to prevent loosening due to torque reaction. | 6th Sep 1938 | Box 123 \ 5 scan0080 | |
| New blueprints for the water pump casing of a Bentley B0 Chassis with a cast iron engine. | 6th Sep 1938 | Box 123 \ 5 scan0081 | |
| New drawing for a Push Rod for the Bentley 60 Chassis, replacing an older part. | 7th Sep 1938 | Box 123 \ 5 scan0082 | |
| New drawings and replacement parts for the Bentley 60 Chassis damper flywheel. | 10th Sep 1938 | Box 123 \ 5 scan0083 | |
| Modification to the crankcase rear end oil retaining groove for the Bentley 60 and 80 models. | 12th Sep 1938 | Box 123 \ 5 scan0084 | |
| Request for a cost analysis of the first Bentley B.60 engine, including expenses for patterns and overtime. | 14th Sep 1938 | Box 123 \ 5 scan0085 | |
| Notification of new drawings and part replacements for the Bentley 60 Chassis (Cast Iron Engine) crankcase and bearings. | 15th Sep 1938 | Box 123 \ 5 scan0086 | |
| New blueprints and modifications for the Bentley 60 Chassis cast iron engine's crankcase and bearings. | 15th Sep 1938 | Box 123 \ 5 scan0087 | |
| Calculations for the B.60 engine damper inertia and stiffness. | 16th Sep 1938 | Box 123 \ 5 scan0088 | |
| New drawings and blueprints for the Water Pump and Fan on the Bentley 80 Chassis. | 17th Sep 1938 | Box 123 \ 5 scan0089 | |
| Issue of blueprints for a new water pump facing washer for the Bentley 60 Chassis. | 19th Sep 1938 | Box 123 \ 5 scan0090 | |
| Development of an induction system for the B.60 engine, requesting adaptor flanges for a standard Wraith system. | 19th Sep 1938 | Box 123 \ 5 scan0091 | |
| Parts list for the Bentley 60 Chassis, covering Inlet Pipes, Carburetter, and Controls. | 21th Sep 1938 | Box 123 \ 5 scan0092 | |
| List of required parts for assembly sections 5070 and 5080. | 21th Sep 1938 | Box 123 \ 5 scan0093 | |
| Parts list and production request for a special carburetter body and built-up induction pipe for testing. | 21th Sep 1938 | Box 123 \ 5 scan0094 | |
| Listing the required sections for the Bentley 80 Chassis engine. | 23th Sep 1938 | Box 123 \ 5 scan0095 | |
| On the method for treating B.60 cast iron crankcases to prevent iron particles entering the bearings. | 23th Sep 1938 | Box 123 \ 5 scan0096 | |
| Cleaning cylinder heads before applying anodic oxidation anti-corrosion treatment. | 23th Sep 1938 | Box 123 \ 5 scan0097 | |
| Instruction to use an S/ZN shaft on the B.80 engine due to a distributor drive gear failure on the B.60 engine. | 30th Sep 1938 | Box 123 \ 5 scan0098 | |
| The modification of an 8-cylinder engine camshaft based on findings from a 6-cylinder Bentley 50 engine. | 30th Sep 1938 | Box 123 \ 5 scan0099 | |
| Engine mounting for a straight engine in a Silver Wraith type frame. | 30th Sep 1938 | Box 123 \ 5 scan0100 | |
| Preliminary unit test report of the B.60 engine, detailing a failure and comparing its performance against a Wraith engine. | 30th Sep 1938 | Box 123 \ 5 scan0101 | |
| Engine performance, focusing on camshafts, valve lift, and detonation issues in various engines. | 30th Sep 1938 | Box 123 \ 5 scan0102 | |
| Engine idling performance and detailed observations on valve gear components, wear, and potential improvements. | 30th Sep 1938 | Box 123 \ 5 scan0103 | |
| Engine component performance, detailing issues with valve bounce, gear failure, and lubrication. | 30th Sep 1938 | Box 123 \ 5 scan0104 | |
| Graph comparing the power output of two different B.60 engine configurations with an open exhaust. | 3rd Oct 1938 | Box 123 \ 5 scan0105 | |
| Experimental B.60 engine with a 3¾ inch bore. | 3rd Oct 1938 | Box 123 \ 5 scan0106 | |
| List of dynamo weights for various car models including B.60, Wraith, S.S., Bentley, and Oldsmobile. | 3rd Oct 1938 | Box 123 \ 5 scan0107 | |
| Urgent request to produce two trial distributor drive gears for a B.60 engine, following a gear failure. | 4th Oct 1938 | Box 123 \ 5 scan0108 | |
| Carburetter revision for the Bentley 60 Chassis, including changes to stud diameters and a list of required parts. | 5th Oct 1938 | Box 123 \ 5 scan0109 | |
| List of new drawings for the Bentley 80 Chassis Crankcase and Bearings. | 6th Oct 1938 | Box 123 \ 5 scan0110 | |
| Stress analysis and comparison of rear axle options for the proposed B.80 Straight 8 engine. | 6th Oct 1938 | Box 123 \ 5 scan0111 | |
| List of new drawings and instructions for the Crankshaft Damper on a Bentley 80 Chassis with a cast iron engine. | 8th Oct 1938 | Box 123 \ 5 scan0112 | |
| Blueprints for new exhaust manifolds for the Bentley 80 Chassis. | 10th Oct 1938 | Box 123 \ 5 scan0113 | |
| Confirming the fitting of Vandervell main bearings to the B.80 engine due to issues with the B.60 units. | 11th Oct 1938 | Box 123 \ 5 scan0114 | |
| New drawings for a camshaft and inlet cam for the Bentley 60 Chassis (Cast Iron Engine). | 12th Oct 1938 | Box 123 \ 5 scan0115 | |
| New drawings and section references for the Bentley 80 Chassis with a cast iron engine. | 13th Oct 1938 | Box 123 \ 5 scan0116 | |
| List of parts and alterations for the Bentley 60 and 80 engines, completing instructions for test bed purposes. | 13th Oct 1938 | Box 123 \ 5 scan0117 | |
| Test report on Bentley 60 valve guide inserts, detailing interference fit tests and their results. | 13th Oct 1938 | Box 123 \ 5 scan0118 | |
| Chart of diametral interferences for valve guides and valve inserts on a Bentley 60 No.1 Unit. | 13th Oct 1938 | Box 123 \ 5 scan0119 | |
| Piston for the B.60 C.I. engine with a 3.75 inch bore. | 14th Oct 1938 | Box 123 \ 5 scan0120 | |
| Comparison of engine component weights for the B.60 engine and the Wraith engine. | 14th Oct 1938 | Box 123 \ 5 scan0121 | |
| Photograph of a B.60 engine unit, viewed from the near side. | 1st Sep 1938 | Box 123 \ 5 scan0122 | |
| Photograph of a B 60 engine unit, front view. | 1st Sep 1938 | Box 123 \ 5 scan0123 | |
| Photograph of a B.60 engine unit, off side view. | 1st Sep 1938 | Box 123 \ 5 scan0124 | |
| New drawing for a Valve Lift Curve and Flywheel Timing on a Bentley 60 Chassis. | 17th Oct 1938 | Box 123 \ 5 scan0125 | |
| Blue prints for a new drawing of an exhaust cam form for a Bentley 60 Chassis. | 18th Oct 1938 | Box 123 \ 5 scan0126 | |
| Blueprints for a new drawing of the Bentley B0 Chassis Crankcase and Cylinders. | 20th Oct 1938 | Box 123 \ 5 scan0127 | |
| The arrangement of the B.60 engine on the no.5 test bed, providing details for mounting the engine and gearbox. | 1st Oct 1938 | Box 123 \ 5 scan0128 | |
| Camshaft, valve lift curve, and new drawing for the inlet cam form for the Bentley 60 Chassis. | 25th Oct 1938 | Box 123 \ 5 scan0129 | |
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