| Description | Date | Identifier | |
| Letter from S. Smith & Sons concerning the design and specifications of an automatic choke control unit. | 20th Jan 1939 | Box 123 \ 1 scan0139 | |
| Despatch request for one automatic jet control to Messrs. S.Smith & Sons Ltd. | 28th Jan 1939 | Box 123 \ 1 scan0140 | |
| Internal request to place an order for two automatic jet controls with S. Smith & Sons Ltd. | 28th Jan 1939 | Box 123 \ 1 scan0141 | |
| Letter to S.Smith & Sons Ltd. regarding the return and retention of automatic jet control units for testing. | 28th Jan 1939 | Box 123 \ 1 scan0142 | |
| Letter from the Experimental Department to S. Smith & Sons Ltd. chasing the delivery of a special automatic jet control. | 10th Feb 1939 | Box 123 \ 1 scan0143 | |
| Letter from S. Smith & Sons regarding the delivery of a special Automatic Jet Control. | 14th Feb 1939 | Box 123 \ 1 scan0144 | |
| Despatch note for an Automatic jet control to S.Smith & Sons, Ltd. | 16th Feb 1939 | Box 123 \ 1 scan0145 | |
| Letter from S. Smith & Sons regarding the dispatch and specifications of a Small Automatic Jet Control. | 22th Feb 1939 | Box 123 \ 1 scan0146 | |
| Payment for an Automatic Jet control unit from S. Smith & Sons. | 30th Mar 1939 | Box 123 \ 1 scan0147 | |
| Letter from The Automobile Engineer magazine regarding a combined air cleaner and air temperature control unit. | 5th Oct 1939 | Box 123 \ 1 scan0148 | |
| Letter to The Automobile Engineer regarding an air temperature control unit and tests carried out with Mr. Grose. | 9th Oct 1939 | Box 123 \ 1 scan0149 | |
| Letter to S. Smith & Sons clarifying a misunderstanding about an air temperature control unit. | 9th Oct 1939 | Box 123 \ 1 scan0150 | |
| Letter from 'The Automobile Engineer' magazine regarding inaccurate records from Messrs. S. Smith & Sons. | 16th Oct 1939 | Box 123 \ 1 scan0151 | |
| Letter of apology from S. Smith & Sons regarding a misunderstanding over an Air Temperature Control Unit. | 18th Oct 1939 | Box 123 \ 1 scan0152 | |
| List of required work and measurements for a Citroen Bentley 4-B-IV chassis. | 7th Oct 1936 | Box 123 \ 1 scan0153 | |
| The reduction of transverse pivot lean on a Citroen Bentley. | 21th Oct 1936 | Box 123 \ 1 scan0154 | |
| Steering geometry modifications for the Citroen Bentley. | 4th Dec 1936 | Box 123 \ 1 scan0155 | |
| Short memo regarding a report on Citroen front suspension and the need for more road experience. | 17th Dec 1936 | Box 123 \ 1 scan0156 | |
| Request to fit a temporary exhaust pipe to a Citroen Bentley to clear a new torsion bar support crossmember. | 13th Jan 1937 | Box 123 \ 1 scan0157 | |
| Tests to diagnose a transverse shake on a Bentley fitted with a Citroen front suspension. | 12th Jan 1937 | Box 123 \ 1 scan0158 | |
| The change of rear springs on a Citroen Bentley 4.B.1V car. | 8th Feb 1937 | Box 123 \ 1 scan0159 | |
| Initial design and production plan for a Bentley S2 straight-8 engine. | 8th May 1939 | Box 123 \ 1 scan0160 | |
| Specification of modifications and parts fitted to a Bentley 80 No.6 engine unit. | 29th Mar 1944 | Box 123 \ 1 scan0161 | |
| Letter to Jack Barclay regarding bonnet issues on the Phantom II and a request for a faster car. | 31th Dec 1936 | Box 123 \ 2 scan0001 | |
| Letter from a retailer proposing a trial of a new French silencer that eliminates back pressure. | 20th Apr 1937 | Box 123 \ 2 scan0002 | |
| Sea trial results for Sulzer-type engine silencers on the Chasseur N°1 vessel. | 20th Nov 1936 | Box 123 \ 2 scan0004 | |
| Sea trial results for the engine silencers of Submarine Chaser No. 3. | 1st Apr 1937 | Box 123 \ 2 scan0005 | |
| Test report on engine silencers for submarine chaser No. 3, including performance data and audibility trials. | 1st Apr 1937 | Box 123 \ 2 scan0006 | |
| Installation schematic for a Lascroux patented double silencer on a Chasseur III vessel. | 1st Apr 1937 | Box 123 \ 2 scan0007 | |
| Test report on a Hotchkiss car, comparing standard and Lascroux silencers. | 4th May 1937 | Box 123 \ 2 scan0008 | |
| Letter from Jack Barclay regarding poor clutch performance on the 4¼ litre Bentley. | 4th May 1937 | Box 123 \ 2 scan0009 | |
| Letter to J. Barclay regarding the performance of 4 1/4 litre and 3 1/2 litre Bentley clutches and engine idling. | 15th May 1937 | Box 123 \ 2 scan0010 | |
| Letter to Jack Barclay regarding silencers for the 25/30 and Bentley models, and the Phantom III. | 31th May 1937 | Box 123 \ 2 scan0011 | |
| Letter from Jack Barclay to W.A. Rowbotham regarding the manufacturing of a silencer and arranging a meeting. | 2nd Jun 1937 | Box 123 \ 2 scan0012 | |
| Query regarding a blueprint for a special silencer to confirm if it is for a 3½-litre or 4¼-litre Bentley. | 11th Jun 1937 | Box 123 \ 2 scan0013 | |
| Letter to Jack Barclay Ltd. confirming the engine specifications for a 4¼-litre Bentley. | 15th Jun 1937 | Box 123 \ 2 scan0014 | |
| Complaint letter from Jack Barclay Ltd regarding faulty instruments, specifically electric clocks, on cars. | 6th Jul 1937 | Box 123 \ 2 scan0015 | |
| Complaint letter from Jack Barclay Ltd regarding the inferior quality of Smiths clocks in cars. | 2nd Jun 1937 | Box 123 \ 2 scan0016 | |
| Letter from retailer Jack Barclay to W.A. Rowbotham enclosing a letter from a customer regarding a silencer. | 23th Jul 1937 | Box 123 \ 2 scan0017 | |
| Letter arranging an interview for Mons. J.L. Lascroux regarding a silencer. | 22th Jul 1937 | Box 123 \ 2 scan0018 | |
| Letter to Jack Barclay regarding the sale of a Phantom III to a mutual friend. | 28th Jul 1937 | Box 123 \ 2 scan0019 | |
| Letter to Mons. Pierre F. Mimerel regarding a delay in reply and arranging an interview for Mons. J.L. Lascroux. | 28th Jul 1937 | Box 123 \ 2 scan0020 | |
| Letter from Jack Barclay Ltd. to W. A. Robotham concerning the sale of a Phantom III chassis. | 30th Jul 1937 | Box 123 \ 2 scan0021 | |
| Telex communication regarding an interview on exhaust systems and testing timelines. | 2nd Aug 1937 | Box 123 \ 2 scan0022 | |
| Telegram received by telephone regarding a test of a silencer in Derby. | 2nd Aug 1937 | Box 123 \ 2 scan0023 | |
| Telegram from Paris to arrange a test for a silencer in Derby. | 10th Mar 1932 | Box 123 \ 2 scan0024 | |
| Customer request for a Thermoid Clutch Plate for a Trials Car. | 11th Apr 1938 | Box 123 \ 2 scan0025 | |
| Dispatch of a Borg & Beck Clutch Driving plate for a Jack Barclay car. | 22th Apr 1938 | Box 123 \ 2 scan0026 | |
| Confirming a verbal request to despatch a 10' Thermoid faced clutch plate for car B.37.LE. | 22th Apr 1938 | Box 123 \ 2 scan0027 | |
| Telegram from Barclay to Rowbotham regarding a lunch invitation at the Midland. | 26th Oct 1926 | Box 123 \ 2 scan0028 | |
| Letter discussing the hiring of semi-skilled dismantlers for engine repair and their starting pay. | 13th Jun 1940 | Box 123 \ 2 scan0029 | |
| Feedback on a Bentley-V and a Trials Car, specifically regarding rear body comfort and an oil issue. | 10th Jul 1940 | Box 123 \ 2 scan0030 | |
| Recommending taking vehicle B.34.AW off the road due to poor performance and to avoid giving the B.V. type a bad name. | 14th Jul 1940 | Box 123 \ 2 scan0031 | |
| Criticisms of a Bentley's body and interior layout. | 14th Jul 1940 | Box 123 \ 2 scan0032 | |
| Responding to criticism from Jack Barclay and Sclater Booth regarding the B.V. model's design and performance. | 16th Jul 1940 | Box 123 \ 2 scan0033 | |
| Critique and comparison of car models B.V and B.II, addressing feedback on features and performance. | 16th Jul 1940 | Box 123 \ 2 scan0034 | |
| Clarifying a misunderstanding regarding chassis numbers and negative reports on a trials car. | 17th Jul 1940 | Box 123 \ 2 scan0035 | |
| Letter from coachbuilder Park Ward regarding bonnet lifting issues on a Bentley-V at speed. | 19th Jul 1940 | Box 123 \ 2 scan0036 | |
| Letter to C.W. Ward of Messrs. Park Ward & Co. Ltd. regarding a note on Jack Barclay's Bentley. | 26th Jul 1940 | Box 123 \ 2 scan0037 | |
| Letter from Jack Barclay to W.A. Rowbotham regarding a stock list and an invitation to lunch. | 20th Aug 1940 | Box 123 \ 2 scan0038 | |
| Enquiry to Mr. Barclay about sourcing a 3.5 litre Bentley and an 8 HP Standard or Austin saloon. | 22th Aug 1940 | Box 123 \ 2 scan0039 | |
| Letter advising a customer on a high-mileage engine overhaul and available cars. | 22th Aug 1940 | Box 123 \ 2 scan0040 | |
| Price list for various used 3½ Litre cars with different coachwork. | 22th Aug 1940 | Box 123 \ 2 scan0041 | |
| Letter from Jack Barclay Ltd to W.A. Robotham regarding the availability of used Bentley cars for a potential customer. | 24th Aug 1940 | Box 123 \ 2 scan0042 | |
| Letter from Jack Barclay discussing the £875 retail price for a car, sourcing a smaller car, and arranging a viewing of two Bentleys. | 27th Aug 1940 | Box 123 \ 2 scan0043 | |
| Letter to Jack Barclay regarding the price of a car for a friend. | 27th Aug 1940 | Box 123 \ 2 scan0044 | |
| Letter from Jack Barclay Ltd regarding a 3 1/2 litre Bentley Sedanca Coupe, chassis B.199 BL. | 4th Sep 1940 | Box 123 \ 2 scan0045 | |
| Letter to Lt. Carnoult Jones regarding the sale of a 1934 Sedanca coupe by Barker. | 9th Sep 1940 | Box 123 \ 2 scan0046 | |
| Customer letter declining the purchase of a Bentley due to wartime circumstances, returning a picture. | 18th Sep 1940 | Box 123 \ 2 scan0047 | |
| Letter to J. Barclay regarding a prospective client's decision not to purchase a Bentley. | 23th Sep 1940 | Box 123 \ 2 scan0048 | |
| Letter to J. Barclay discussing the unsuccessful search for a Citroen and the potential sale or part-exchange of a 1938 Buick. | 15th Oct 1940 | Box 123 \ 2 scan0049 | |
| Letter to Jack Barclay Ltd. addressing customer complaints about car springing, pinking, and speed. | 30th Nov 1940 | Box 123 \ 2 scan0050 | |
| Letter discussing the performance of a car driven by George Eyston and the superior chassis facilities at Hythe Road compared to Derby. | 30th Nov 1940 | Box 123 \ 2 scan0051 | |
| Letter to Jack Barclay addressing complaints about car springing, pinking, and performance. | 30th Nov 1940 | Box 123 \ 2 scan0052 | |
| Letter discussing a car driven by George Eyston, its speed record, and the best location for chassis work. | 30th Nov 1940 | Box 123 \ 2 scan0053 | |
| Letter addressing customer complaints about car springing, engine pinking, and vehicle performance. | 30th Nov 1940 | Box 123 \ 2 scan0054 | |
| Page 2 of a letter discussing George Eyston's car and facilities at Hythe Road versus Derby. | 30th Nov 1940 | Box 123 \ 2 scan0055 | |
| Letter from Jack Barclay detailing the service history and issues with his Bentley car, chassis B 34 AW. | 26th Nov 1940 | Box 123 \ 2 scan0056 | |
| Letter from Jack Barclay detailing ongoing issues with a car and suggesting a long-term test. | 26th Nov 1940 | Box 123 \ 2 scan0057 | |
| Postscript to a letter concerning a singing noise from the gearbox due to a low oil level. | 4th Dec 1940 | Box 123 \ 2 scan0058 | |
| Letter to Mr. Barclay informing him that a Buick car is no longer for sale as it has been commissioned by the Transport Department. | 4th Dec 1940 | Box 123 \ 2 scan0059 | |
| Letter from retailer Jack Barclay complaining about his Bentley's suspension, pinking, and speed. | 2nd Dec 1940 | Box 123 \ 2 scan0060 | |
| Continuation letter from Jack Barclay regarding car maintenance, data gathering, and a request for a loaner vehicle. | 7th Dec 1940 | Box 123 \ 2 scan0061 | |
| Letter to Jack Barclay regarding car suspension issues, top speed, and wartime service limitations. | 7th Dec 1940 | Box 123 \ 2 scan0062 | |
| Confidential nett trade price list for stock items from Jack Barclay Ltd. | 10th Dec 1940 | Box 123 \ 2 scan0063 | |
| Customer complaint from Jack Barclay regarding a noisy second speed gear and a proposal for its rectification. | 16th Dec 1940 | Box 123 \ 2 scan0064 | |
| Letter to Jack Barclay regarding stronger rear springs for a car. | 19th Jan 1941 | Box 123 \ 2 scan0065 | |
| Letter from Jack Barclay regarding suspension issues and other work required for a Bentley B 34 AW. | 15th Jan 1941 | Box 123 \ 2 scan0066 | |
| Continuation of a letter from Jack Barclay with a handwritten postscript about a potential Bentley sale. | 22th Jan 1940 | Box 123 \ 2 scan0067 | |
| Response to a customer complaint about soft rear suspension, with recommendations for modification. | 22th Jan 1940 | Box 123 \ 2 scan0068 | |
| Customer complaint about soft rear suspension and the proposed modifications to the damping system. | 22th Jan 1941 | Box 123 \ 2 scan0069 | |
| Potential engine repairs for a car belonging to Jack Barclay, including costs and wartime feasibility. | 23th Jan 1941 | Box 123 \ 2 scan0070 | |
| Complaint from Jack Barclay about his B.V.'s rear suspension being too soft, with advice on modifying the damping. | 22th Jan 1941 | Box 123 \ 2 scan0071 | |
| Arranging with Jack Barclay to swap a gearbox between chassis B.34-AW and B.28-AW. | 31th Jan 1941 | Box 123 \ 2 scan0072 | |
| Letter from a retailer regarding the performance of a Bentley B 34 AW, requesting modifications to increase its speed. | 11th Mar 1941 | Box 123 \ 2 scan0073 | |
| Continuation page of a letter discussing payment for parts, signed by Jack Barclay. | 13th Mar 1941 | Box 123 \ 2 scan0074 | |
| Letter to Jack Barclay regarding the performance of experimental Bentley cars and the Corniche model. | 13th Mar 1941 | Box 123 \ 2 scan0075 | |
| Telegram from Jack Barclay enquiring about a forgotten letter concerning a Bentley. | 26th Mar 1941 | Box 123 \ 2 scan0076 | |
| Record of a phone call from Jack Barclay London chasing up a letter regarding a Bentley. | 26th Mar 1941 | Box 123 \ 2 scan0077 | |
| Telegram received by telephone from Jack Barclay to W.A. Robotham about a letter concerning a Bentley. | 26th Mar 1941 | Box 123 \ 2 scan0078 | |
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