| Description | Date | Identifier | |
| Letter to Briggs Motor Bodies Ltd. discussing frame construction and costs. | 7th Sep 1937 | Box 99 \ 2 scan0049 | |
| Letter from Briggs Motor Bodies Ltd. confirming alterations made to blueprint FB.3009. | 8th Sep 1937 | Box 99 \ 2 scan0050 | |
| Covering order for chassis frame steel from Briggs Motor Bodies Ltd. | 8th Sep 1937 | Box 99 \ 2 scan0051 | |
| Material supply and construction of a new light Bentley III frame. | 13th Sep 1937 | Box 99 \ 2 scan0052 | |
| Letter to Briggs Motor Bodies Ltd. concerning steel thickness, pricing, and proposed frame alterations. | 17th Sep 1937 | Box 99 \ 2 scan0053 | |
| Letter requesting a quotation for a frame, referencing American gauges and cost differences. | 17th Sep 1937 | Box 99 \ 2 scan0054 | |
| Testing requirements for the Bentley III frame, specifically requesting alternative front gussets. | 22th Sep 1937 | Box 99 \ 2 scan0055 | |
| Request for detail drawings of the B.III frame front end and gusset to create a sample for deflection tests. | 22th Sep 1937 | Box 99 \ 2 scan0056 | |
| Requesting a detailed investigation into design changes for the lowered Bentley 111 frame. | 11th Oct 1937 | Box 99 \ 2 scan0057 | |
| Analysis of modifications for a revised and lowered frame, model B.111. | 9th Oct 1937 | Box 99 \ 2 scan0058 | |
| List of required modifications for various vehicle components, continued from a previous page. | 9th Oct 1937 | Box 99 \ 2 scan0059 | |
| Technical memo discussing chassis frame stiffness, comparing the existing channel cross section with a proposed I-section. | 21th Oct 1937 | Box 99 \ 2 scan0060 | |
| Development, weight, and cost comparison of the Bentley III frame against the Wraith frame. | 25th Oct 1937 | Box 99 \ 2 scan0061 | |
| Frame stiffness, presenting the results of torsion tests on various chassis and bodies. | 25th Oct 1937 | Box 99 \ 2 scan0062 | |
| Table of frame stiffness measurements for the Bentley III. | 25th Oct 1937 | Box 99 \ 2 scan0063 | |
| Table of comparative dimensions for various vehicle frames. | 25th Oct 1937 | Box 99 \ 2 scan0064 | |
| Chassis frame design, comparing stiffness, construction methods, and materials for the Wraith and Bentley III models. | 25th Oct 1937 | Box 99 \ 2 scan0065 | |
| Technical note discussing frame strength, weight distribution, and modifications in relation to Bentley and Wraith models. | 25th Oct 1937 | Box 99 \ 2 scan0066 | |
| Graph showing the results of chassis and body torsion tests for an Oldsmobile Saloon with a Fisher Body. | 15th Jun 1937 | Box 99 \ 2 scan0067 | |
| Blueprint graph showing chassis and body torsion test results for a Wraith chassis. | 17th Jun 1937 | Box 99 \ 2 scan0068 | |
| Graph of chassis and body torsion test results for a Packard chassis with front wings. | 8th Jun 1937 | Box 99 \ 2 scan0069 | |
| Graph and diagram showing the torsional stiffness of a Bentley III frame under an applied torque. | 8th Jun 1937 | Box 99 \ 2 scan0070 | |
| Car chassis on a rig being weighed and tested for rigidity. | 8th Jun 1937 | Box 99 \ 2 scan0071 | |
| The stiffness of an unwelded Bentley III frame at different material thicknesses. | 26th Aug 1938 | Box 99 \ 2 scan0072 | |
| Photograph of a Bentley B, 126 inch wheelbase, all-welded production frame. | 26th Aug 1938 | Box 99 \ 2 scan0073 | |
| The torsional rigidity of a welded Bentley III frame at different thicknesses. | 26th Aug 1938 | Box 99 \ 2 scan0074 | |
| Photograph of a Bentley III frame with welded gussets, showing its construction. | 26th Aug 1938 | Box 99 \ 2 scan0075 | |
| The stiffness of a Bentley III frame with welded gussets at different thicknesses. | 26th Aug 1938 | Box 99 \ 2 scan0076 | |
| Photograph showing a lightened car chassis frame on a workshop floor. | 26th Aug 1938 | Box 99 \ 2 scan0077 | |
| Specifications for a Bentley III frame, detailing torsional rigidity based on hole configurations. | 28th Oct 1937 | Box 99 \ 2 scan0078 | |
| Stiffness results of the Bentley III front pan. | 28th Oct 1937 | Box 99 \ 2 scan0079 | |
| Quotation for chassis frame components from Rubery, Owen & Co Ltd. | 6th Nov 1937 | Box 99 \ 2 scan0080 | |
| Blueprint alterations for a Bentley 111 Frame, specifically for the starting handle and front bumper bearing. | 17th Nov 1937 | Box 99 \ 2 scan0081 | |
| Letter from Rubery, Owen & Co. Ltd declining to quote for 1,000 Chassis Frames to Drawing FCD.139. | 19th Nov 1937 | Box 99 \ 2 scan0082 | |
| Covering order request to John Thompson Motor Pressings Ltd. for a Bentley III frame assembly and a dashboard. | 29th Nov 1937 | Box 99 \ 2 scan0083 | |
| Request to issue a G.R. sheet for 4' and 6' rebound buffers received from E.H. Pickford Co. | 19th Nov 1937 | Box 99 \ 2 scan0084 | |
| Letter to John Thompson Motor Pressings Ltd. regarding new prints for part FB.33030 and a new plate FB.3347. | 6th Dec 1937 | Box 99 \ 2 scan0085 | |
| Letter to Hughes Johnson Stampings Ltd. requesting a quotation for torque arms and a modified part. | 7th Dec 1937 | Box 99 \ 2 scan0086 | |
| Letter from John Thompson Motor-Pressings Ltd. regarding prints for F.B.33030 and a new plate requirement for F.B.3347. | 7th Dec 1937 | Box 99 \ 2 scan0087 | |
| Frame shake issues on model 1.B.50 and proposed alterations to stiffen the 10 B.V frame. | 20th Sep 1938 | Box 99 \ 2 scan0088 | |
| Instruction to the Experimental Department regarding the use of a Silver Wraith Front Cross Member on a Bentley 111 frame. | 21th Sep 1938 | Box 99 \ 2 scan0089 | |
| Estimate from John Thompson Motor Pressings Ltd. for the manufacture of 1,000 torque arms. | 8th Dec 1937 | Box 99 \ 2 scan0090 | |
| Scheme for the arrangement of Body Brackets for a Bentley 111 Frame. | 9th Dec 1937 | Box 99 \ 2 scan0091 | |
| Letter to a supplier regarding pieces to block holes in a front cross member and the suggested welding method. | 11th Dec 1937 | Box 99 \ 2 scan0092 | |
| Scheme for the Bentley 111 Combined Body Bracket and Intermediate Step Iron frame and fittings. | 13th Dec 1937 | Box 99 \ 2 scan0093 | |
| Letter from a supplier regarding spring brackets and a completed frame awaiting collection. | 16th Dec 1937 | Box 99 \ 2 scan0094 | |
| Letter to Hughes-Johnsom Stampings Ltd. requesting an estimate for several parts. | 16th Dec 1937 | Box 99 \ 2 scan0095 | |
| Schemes for the front and rear step irons required for the Bentley 111. | 17th Dec 1937 | Box 99 \ 2 scan0096 | |
| Scheme for the Bentley 111 Frame, concerning the Rear Body Bracket. | 20th Dec 1937 | Box 99 \ 2 scan0097 | |
| Letter to John Thompson Pressings Ltd. regarding an inspector's report on a frame, tooling costs, and new prints for gussets. | 23th Dec 1937 | Box 99 \ 2 scan0098 | |
| List of faults and measurements for a Bentley III Frame. | 23th Dec 1937 | Box 99 \ 2 scan0099 | |
| Inspection notes detailing issues with a cruciform, gusset, and channels. | 24th Dec 1937 | Box 99 \ 2 scan0100 | |
| Revised design for the front end of the Bentley 3 frame, including project objectives and specific modifications. | 24th Dec 1937 | Box 99 \ 2 scan0101 | |
| Incorporating modifications to a lower triangle lever into the next order of frames. | 24th Dec 1937 | Box 99 \ 2 scan0102 | |
| Details on shockdamper mounting, bump buffer, and main spring for the modified front end of a Bentley 111 frame. | 3rd Jan 1938 | Box 99 \ 2 scan0103 | |
| The torsional stiffness and weight of the Bentley III frame. | 5th Jan 1938 | Box 99 \ 2 scan0104 | |
| Scheme for a rear bump buffer on a Bentley 111 frame. | 7th Jan 1938 | Box 99 \ 2 scan0105 | |
| Issues with coil spring frequency, wheel flap, and wishbone bearings on a Bentley 111 chassis. | 7th Jan 1938 | Box 99 \ 2 scan0106 | |
| Requesting an order for three B.III frames with American front end construction, detailing supplier arrangements and costs. | 10th Jan 1938 | Box 99 \ 2 scan0107 | |
| Letter to a supplier about incorrect drawings for frame gussets and the issue of new prints. | 13th Jan 1938 | Box 99 \ 2 scan0108 | |
| Letter from John Thompson Motor Pressings Ltd. acknowledging receipt of a letter and revised drawing for Frame Gussets. | 14th Jan 1938 | Box 99 \ 2 scan0109 | |
| Letter to John Thompson Motor Pressings Ltd. confirming details for three new Bentley frames. | 18th Jan 1938 | Box 99 \ 2 scan0110 | |
| Letter confirming the alteration of records for three new Bentley Frames. | 20th Jan 1938 | Box 99 \ 2 scan0111 | |
| Parts list for a revised front end and modified front bumper for the Bentley III chassis. | 4th Feb 1938 | Box 99 \ 2 scan0112 | |
| Instruction to produce and fit parts for the starting handle to the 3rd chassis onwards. | 4th Feb 1938 | Box 99 \ 2 scan0113 | |
| Letter to Messrs. Briggs Motor Bodies Ltd. requesting quotations for manufacturing 1,000 car frames based on a new design. | 3rd Feb 1938 | Box 99 \ 2 scan0114 | |
| Letter to Briggs Motor Bodies Ltd. regarding final drawings for a new frame and quotation. | 3rd Feb 1938 | Box 99 \ 2 scan0115 | |
| Letter to John Thompson Motor Pressings Ltd. enclosing an arrangement drawing for a new frame and advising on parts despatch. | 4th Feb 1938 | Box 99 \ 2 scan0116 | |
| Letter from John Thompson Motor Pressings Ltd. acknowledging receipt of arrangement drawing F.B.3558 for a new frame. | 7th Feb 1938 | Box 99 \ 2 scan0117 | |
| Letter from Briggs Motor Bodies regarding a quotation for 1,000 frame members. | 7th Feb 1938 | Box 99 \ 2 scan0118 | |
| Letter from Briggs Motor Bodies regarding frame drawings, pricing, and a proposed meeting. | 7th Feb 1938 | Box 99 \ 2 scan0119 | |
| Scheme detailing a modification to a Bentley III frame's rear gusset for simplified welding. | 9th Feb 1938 | Box 99 \ 2 scan0120 | |
| Ground clearance measurements for a Bentley III chassis with handwritten annotations. | 10th Feb 1938 | Box 99 \ 2 scan0121 | |
| Modifications to the Bentley 111 frame following a fracture on the bumping rig. | 16th Feb 1938 | Box 99 \ 2 scan0122 | |
| Directive to proceed with modifications to the Bentley 111 frame dies, rejecting a suggested delay for bumping tests. | 18th Feb 1938 | Box 99 \ 2 scan0123 | |
| Letter from Briggs Motor Bodies regarding figures for frames and arranging a meeting. | 22th Feb 1938 | Box 99 \ 2 scan0124 | |
| Letter to F.H. Manning of Briggs Motor Bodies Limited to arrange a discussion about frame particulars and specifications. | 24th Feb 1938 | Box 99 \ 2 scan0125 | |
| Letter from John Thompson Motor Pressings Ltd. confirming telephone instructions for a new type of frame assembly. | 24th Feb 1938 | Box 99 \ 2 scan0126 | |
| Torque reaction damper for the Bentley 111, noting the design is no longer required and should be filed. | 28th Feb 1938 | Box 99 \ 2 scan0127 | |
| Letter to John Thompson Motor Pressings Ltd. confirming agreement with their letter of 24th February. | 1st Mar 1938 | Box 99 \ 2 scan0128 | |
| Letter from Briggs Motor Bodies to W. A. Robotham arranging a meeting to discuss frame figures. | 4th Mar 1938 | Box 99 \ 2 scan0129 | |
| Letter to N.H. Manning of Briggs Motor Bodies Ltd, confirming arrangements for a visit on March 9th. | 5th Mar 1938 | Box 99 \ 2 scan0130 | |
| Comparative table of frame stiffness measurements for various car models. | 7th Mar 1938 | Box 99 \ 2 scan0131 | |
| Letter from Briggs Motor Bodies regarding Mr. Manning's travel arrangements and declining an offer of accommodation. | 7th Mar 1938 | Box 99 \ 2 scan0132 | |
| Lower triangle rear bearing for the strengthened frame of a Bentley 111. | 7th Mar 1938 | Box 99 \ 2 scan0133 | |
| Modifications to the Bentley 111 strengthened front end frame. | 11th Mar 1938 | Box 99 \ 2 scan0134 | |
| Letter to John Thompson Motor Pressings Ltd. regarding fitting bracket FB.3464 to a new longer frame. | 11th Mar 1938 | Box 99 \ 2 scan0135 | |
| Letter to Brigg Motor Bodies Ltd. concerning the costs and specifications for modifying a vehicle frame. | 12th Mar 1938 | Box 99 \ 2 scan0136 | |
| Letter inquiring about the capability to produce a specific length of frame and the associated additional tool costs. | 12th Mar 1938 | Box 99 \ 2 scan0137 | |
| Letter to Briggs Motor Bodies Ltd. requesting clarification on a quotation for 12g Chassis steel. | 12th Mar 1938 | Box 99 \ 2 scan0138 | |
| Telegram from Briggbody confirming the thickness of a chassis frame quotation. | 14th Mar 1938 | Box 99 \ 2 scan0139 | |
| Torsional stiffness test results for a B.III riveted frame. | 18th Mar 1938 | Box 99 \ 2 scan0140 | |
| Blueprints for a strengthened frame forward of the dash for the Bentley III chassis. | 21th Mar 1938 | Box 99 \ 2 scan0141 | |
| Letter to Briggs Motor Bodies Ltd. discussing frame specifications and requesting a quotation for a pressed steel dashboard. | 26th Mar 1938 | Box 99 \ 2 scan0142 | |
| Summary of work done on the B.III Suspension and frame. | 28th Mar 1938 | Box 99 \ 2 scan0143 | |
| Comparison report on bumper chassis endurance and wheel flutter tests between a Bentley III and a Packard. | 28th Mar 1938 | Box 99 \ 2 scan0144 | |
| List of component failures and their lifespans observed during an endurance run. | 28th Mar 1938 | Box 99 \ 2 scan0145 | |
| Test results and failures for chassis and engine components including torque arms, dampers, and frame welding. | 28th Mar 1938 | Box 99 \ 2 scan0146 | |
| Failures and modifications to the vehicle frame, gussets, and various rubber components. | 28th Mar 1938 | Box 99 \ 2 scan0147 | |
| Blueprint for a proposed bumper with specified dimensions and hardness. | 4th Mar 1938 | Box 99 \ 2 scan0148 | |
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