| Description | Date | Identifier | |
| Production of a forged radius arm for the Bentley III front suspension, including a suggestion to reduce weight. | 16th Jul 1937 | Box 100 \ 1 scan0025 | |
| Letter concerning the preparation of Torque Arms, Steel Inserts and an estimate for frames and tools. | 19th Jul 1937 | Box 100 \ 1 scan0026 | |
| Letter from The Projectile & Engineering Co. Ltd regarding modifications to riveting at the crown of an arch. | 19th Jul 1937 | Box 100 \ 1 scan0027 | |
| Notice regarding a new scheme for the front anchorage of the rear spring on the Bentley lll. | 14th Aug 1937 | Box 100 \ 1 scan0028 | |
| Requesting the design of a telescopic damper for the B.III front suspension and a high power engine's combustion chamber head. | 24th Aug 1937 | Box 100 \ 1 scan0029 | |
| Letter from The Projectile & Engineering Company regarding the dispatch of 4 experimental torque arms. | 28th Aug 1937 | Box 100 \ 1 scan0030 | |
| Letter to a supplier requesting an urgent order for two pairs of Bentley springs with specific requirements. | 31th Aug 1937 | Box 100 \ 1 scan0031 | |
| Request for testing on Bentley III front suspension parts, including rubber bushes and torque arms. | 1st Sep 1937 | Box 100 \ 1 scan0032 | |
| Letter from Thos Firth & John Brown Ltd. regarding the ordering of steel for Experimental 5-Plate Bentley Springs. | 3rd Sep 1937 | Box 100 \ 1 scan0033 | |
| Letter from Thos Firth & John Brown Ltd concerning a blueprint for experimental Bentley rear springs. | 4th Sep 1937 | Box 100 \ 1 scan0034 | |
| Letter regarding a mislaid original drawing for Experimental 5 Plate Springs, Bentley Type. | 6th Sep 1937 | Box 100 \ 1 scan0035 | |
| Letter to Messrs. Thos. Firth & John Brown Ltd. regarding drawing No.217 for springs. | 8th Sep 1937 | Box 100 \ 1 scan0036 | |
| Request to issue a covering order to Firths for two pairs of Bentley III rear road springs. | 9th Sep 1937 | Box 100 \ 1 scan0037 | |
| Letter returning a blueprint of Drawing No. 217 after a copy was taken. | 10th Sep 1937 | Box 100 \ 1 scan0038 | |
| Request to produce and despatch 6 more Torque arm inserts for a Bentley III front suspension. | 15th Sep 1937 | Box 100 \ 1 scan0039 | |
| Letter to The Projectile & Engineering Co. Ltd. regarding the supply and testing of torque arms and inserts. | 15th Sep 1937 | Box 100 \ 1 scan0040 | |
| Request to send a covering order for six torque arms to The Projectile & Engineering Co. Ltd. | 15th Sep 1937 | Box 100 \ 1 scan0041 | |
| Letter confirming the manufacture of six Torque Arms FB.2924 and noting that six inserts FB.2925 will be sent. | 17th Sep 1937 | Box 100 \ 1 scan0042 | |
| Letter from Toledo Woodhead Springs Ltd. regarding production timelines for leaf and valve springs. | 29th Sep 1937 | Box 100 \ 1 scan0043 | |
| Letter to Toledo Woodhead Springs Ltd. regarding the dispatch of a road spring part and future testing. | 5th Oct 1937 | Box 100 \ 1 scan0044 | |
| Mistake in the detailing of the Bentley III Front Suspension Yoke piece FB.2943. | 6th Oct 1937 | Box 100 \ 1 scan0045 | |
| Modification scheme for the Bentley 111 rear springs threaded shackle. | 9th Oct 1937 | Box 100 \ 1 scan0046 | |
| Comparison of actual versus drawing specifications for Bentley III front suspension springs. | 9th Oct 1937 | Box 100 \ 1 scan0047 | |
| Measurements of spring load and deflection for a Bentley III. | 30th Sep 1937 | Box 100 \ 1 scan0048 | |
| Letter from English Steel Corporation regarding the dispatch of two sample springs and awaiting feedback on their suitability. | 30th Sep 1937 | Box 100 \ 1 scan0049 | |
| Particulars of springs for the Bentley 111 front suspension. | 27th Oct 1937 | Box 100 \ 1 scan0050 | |
| Specification sheet comparing two spring types for a Bentley 111 based on static deflection and normal loads. | 27th Oct 1937 | Box 100 \ 1 scan0051 | |
| Requesting a covering order for parts received from Oscroft & Co and Pickford & Co. | 3rd Nov 1937 | Box 100 \ 1 scan0052 | |
| Letter to The Projectile & Engineering Co. Ltd. complaining about an invoice for torque arms and requesting new quotations for larger quantities. | 11th Nov 1937 | Box 100 \ 1 scan0053 | |
| Requesting a covering order for 6 rebound buffers received from E.H. Pickford & Co. Ltd. | 12th Nov 1937 | Box 100 \ 1 scan0054 | |
| Letter from The Projectile & Engineering Company regarding the cost of six Torque Arms and a query about tool costs. | 13th Nov 1937 | Box 100 \ 1 scan0055 | |
| Blueprints for a simplified Yoke Piece and Bearing for the Bentley 111 front suspension. | 16th Nov 1937 | Box 100 \ 1 scan0056 | |
| Use of mild steel versus other materials for the Bentley 111 front suspension. | 18th Nov 1937 | Box 100 \ 1 scan0057 | |
| Letter to The Projectile & Engineering Co. Ltd. clarifying a quotation for torque arms and associated tool costs. | 19th Nov 1937 | Box 100 \ 1 scan0058 | |
| Modifications to the top water pipe for the Bentley 111 model. | 20th Nov 1937 | Box 100 \ 1 scan0059 | |
| Test report on Bentley III torque arms. | 26th Nov 1937 | Box 100 \ 1 scan0060 | |
| Blueprint of a test rig and failure analysis for a Bentley III torque arm. | 19th Nov 1937 | Box 100 \ 1 scan0061 | |
| Letter from a supplier regarding a quotation for Torque Arms and the cost of temporary tooling for experimental samples. | 29th Nov 1937 | Box 100 \ 1 scan0062 | |
| Request to produce 4 cast aluminium torque arms for a Bentley III front suspension. | 29th Nov 1937 | Box 100 \ 1 scan0063 | |
| Quotation for the supply of Torque Arms from The Projectile & Engineering Company. | 29th Nov 1937 | Box 100 \ 1 scan0064 | |
| Scheme for the Bentley 111 front suspension, concerning upper triangle levers and shock damper mounting. | 30th Nov 1937 | Box 100 \ 1 scan0065 | |
| Scheme for a modified rear bearing for the lower triangle of the Bentley 111 front suspension. | 1st Dec 1937 | Box 100 \ 1 scan0066 | |
| Confirming the use of nickel chrome steel for the Bentley III Front Suspension Main Levers and Yokes. | 2nd Dec 1937 | Box 100 \ 1 scan0067 | |
| Modifications to the Bentley 111 front suspension to reduce costs. | 3rd Dec 1937 | Box 100 \ 1 scan0068 | |
| Scheme detailing a modification to the Bentley 111 front suspension upper triangle levers. | 7th Dec 1937 | Box 100 \ 1 scan0069 | |
| Material change for Bentley 111 front suspension levers to 3 1/2% nickel steel. | 8th Dec 1937 | Box 100 \ 1 scan0070 | |
| Proposed serrations for shock damper levers on the Bentley 111 front suspension. | 11th Dec 1937 | Box 100 \ 1 scan0071 | |
| Order for 4 pairs of B.III rear springs from two different suppliers. | 4th Jan 1938 | Box 100 \ 1 scan0072 | |
| Letter to Silentbloc Ltd. discussing rig test results and design issues with experimental bushes. | 6th Jan 1938 | Box 100 \ 1 scan0073 | |
| Letter from Silentbloc Limited regarding the arrangement of a meeting. | 7th Jan 1938 | Box 100 \ 1 scan0074 | |
| Letter to Silentbloc Ltd. arranging a meeting to discuss rubber bushes. | 8th Jan 1938 | Box 100 \ 1 scan0075 | |
| Confirming a 'Safety First' measure for a Top Yoke Piece Bearing on a chassis. | 10th Jan 1938 | Box 100 \ 1 scan0076 | |
| Letter to Jonas Woodhead & Sons Ltd. regarding Bentley and Humber springs, requesting technical specifications. | 11th Jan 1938 | Box 100 \ 1 scan0077 | |
| The failure analysis of rubber bearings in a bumper chassis front suspension. | 11th Jan 1938 | Box 100 \ 1 scan0078 | |
| List showing the running time of various upper and lower bearings. | 2nd Feb 1938 | Box 100 \ 1 scan0079 | |
| Request to plot deflection curves for four Bentley III front suspension bearings against end thrust. | 2nd Feb 1938 | Box 100 \ 1 scan0080 | |
| Accounts reminder letter for overdue payments for October and December. | 11th Feb 1938 | Box 100 \ 1 scan0081 | |
| Letter to Silentbloc Ltd. discussing quotations, pricing, and comparative tests of body mountings and bushes. | 14th Feb 1938 | Box 100 \ 1 scan0082 | |
| Page 2 of a letter requesting six items be sent. | 15th Feb 1938 | Box 100 \ 1 scan0083 | |
| Letter to The Projectile Engineering Co. Ltd. regarding a quotation and costs for torque arm samples. | 15th Feb 1938 | Box 100 \ 1 scan0084 | |
| Letter regarding welding failures, the cost of a sample frame, and producing experimental torque arm samples. | 15th Feb 1938 | Box 100 \ 1 scan0085 | |
| Letter from Silentbloc Limited regarding the dispatch of Silentbloc Bearings for testing. | 15th Feb 1938 | Box 100 \ 1 scan0086 | |
| Letter discussing the cost of producing handmade and lighter gauge samples of Torque Arms. | 18th Feb 1938 | Box 100 \ 1 scan0087 | |
| Letter from The Projectile & Engineering Co Ltd regarding the costs of experimental work and non-adoption of a design. | 18th Feb 1938 | Box 100 \ 1 scan0088 | |
| Request to send a covering order to Silentbloc Ltd. for 24 received bushes. | 18th Feb 1938 | Box 100 \ 1 scan0089 | |
| Order for rubber seatings from The British Tyre & Rubber Co. | 23th Feb 1938 | Box 100 \ 1 scan0090 | |
| Findings of an investigation into the steering and independent front wheel suspension of the Bentley III. | 28th Feb 1938 | Box 100 \ 1 scan0091 | |
| Technical memorandum detailing spring stresses, ratings, and deflection specifications for various frames. | 25th Feb 1938 | Box 100 \ 1 scan0092 | |
| Meeting notes on rear spring deflection, Packard-type suspension investigation, and turning circle calculations. | 25th Feb 1938 | Box 100 \ 1 scan0093 | |
| Technical memorandum discussing potential modifications to steering, brakes, ground clearance, and wheel movement. | 25th Feb 1938 | Box 100 \ 1 scan0094 | |
| Modifications to a car's suspension system to increase movement. | 25th Feb 1938 | Box 100 \ 1 scan0095 | |
| Investigation results for the front suspension of the Bentley 111 model. | 8th Mar 1938 | Box 100 \ 1 scan0096 | |
| Confirming the testing of a metallic spherical top wishbone bearing for the B.III front suspension. | 9th Mar 1938 | Box 100 \ 1 scan0097 | |
| Parts tag for an Upper Bushing Assembly with submission details. | 18th Feb 1938 | Box 100 \ 1 scan0098 | |
| Shipping tag from Inland Manufacturing Company addressed to Mr. W. A. Robotham in Derby, England. | 18th Feb 1938 | Box 100 \ 1 scan0099 | |
| Parts tag for an Inner Pin Assembly with part numbers and submission details. | 18th Feb 1938 | Box 100 \ 1 scan0100 | |
| Shipping tag from Inland Manufacturing Company in Dayton, Ohio, to Rolls-Royce in Derby. | 15th Mar 1938 | Box 100 \ 1 scan0101 | |
| Request for a detailed drawing to modify dies for front suspension yoke pieces. | 15th Mar 1938 | Box 100 \ 1 scan0102 | |
| Request to change the rear road springs on a chassis, preferably overnight. | 15th Mar 1938 | Box 100 \ 1 scan0103 | |
| Despatch instruction for sending a pair of road springs to the makers for alteration. | 15th Mar 1938 | Box 100 \ 1 scan0104 | |
| Letter regarding the return of Bentley springs and a request for a drawing of softer replacements. | 15th Mar 1938 | Box 100 \ 1 scan0105 | |
| List of experimental items required for the front suspension. | 16th Mar 1938 | Box 100 \ 1 scan0106 | |
| Alterations to the front suspension of a Bentley 111 to achieve zero caster angle. | 16th Mar 1938 | Box 100 \ 1 scan0107 | |
| Letter from a supplier regarding the modification of springs and a new blueprint for softer springs. | 17th Mar 1938 | Box 100 \ 1 scan0108 | |
| Letter to Thos. Firth & John Brown Ltd. confirming receipt of 1000 lbs. springs and ordering another pair to print No.250. | 21th Mar 1938 | Box 100 \ 1 scan0109 | |
| Request to send a covering order to Firths for the modification and supply of Bentley rear springs. | 21th Mar 1938 | Box 100 \ 1 scan0110 | |
| Confirming the submission of two failed Bentley III front coil springs for examination. | 22th Mar 1938 | Box 100 \ 1 scan0111 | |
| Letter to a supplier requesting an estimate for frame production and providing an update on prototype testing. | 23th Mar 1938 | Box 100 \ 1 scan0112 | |
| Outlining three questions requiring answers regarding the B.III suspension system. | 26th Mar 1938 | Box 100 \ 1 scan0113 | |
| Blueprints for Bentley 111 front shock damper pistons and associated gudgeon pins. | 28th Mar 1938 | Box 100 \ 1 scan0114 | |
| Unpaid invoice from The Projectile and Engineering Co. Ltd. for Torque Arms and Tubes. | 29th Mar 1938 | Box 100 \ 1 scan0115 | |
| Letter to a supplier regarding a payment dispute over the cost of torque arms. | 30th Mar 1938 | Box 100 \ 1 scan0116 | |
| Instruction to modify road springs by fitting 5/16' packings and a pair of lower rating rear springs for vehicle 7.B.V. | 30th Mar 1938 | Box 100 \ 1 scan0117 | |
| Instructions for fitting packings under the front springs and supplying lower rating rear springs. | 30th Mar 1938 | Box 100 \ 1 scan0118 | |
| Packard type front suspension on B.III & B.50 models, including torque calculations. | 1st Apr 1938 | Box 100 \ 1 scan0119 | |
| Request for two blueprints each for various Bentley lll front suspension components. | 8th Apr 1938 | Box 100 \ 1 scan0120 | |
| Instructions to fit a pair of standard dampers and change the rear springs for car 7.B.V. | 8th Apr 1938 | Box 100 \ 1 scan0121 | |
| Testing a Cadillac-style threaded pin to replace the silent-bloc bush for the rear spring front anchorage. | 8th Apr 1938 | Box 100 \ 1 scan0122 | |
| Parts list for the Bentley 111 Front Suspension, Sections 7160 and 7042, accompanying two blueprints. | 8th Apr 1938 | Box 100 \ 1 scan0123 | |
| Payment of two invoices from Projectile & Engineering Co.Ltd. | 12th Apr 1938 | Box 100 \ 1 scan0124 | |
| | | | |
