| Description | Date | Identifier | |
| Request to The S.U. Company Ltd. for six thimble gauze filters for testing on a Bentley carburetter. | 24th May 1935 | Box 121 \ 4 scan0024 | |
| Letter to The S.U. Company Ltd. discussing carburettor needles, seatings, and petrol flex piping. | 29th May 1935 | Box 121 \ 4 scan0025 | |
| Sample tube received from the Power Flex Co. for testing purposes. | 29th May 1935 | Box 121 \ 4 scan0026 | |
| Letter to S.U. Company Ltd. requesting the dispatch of a standard 9 HP, 1 1/8' carburettor and providing invoicing instructions. | 29th May 1935 | Box 121 \ 4 scan0027 | |
| Letter to T.C. Skinner of The S.U. Company Ltd., acknowledging receipt of a 1 1/4' bore carburetter and its invoice. | 3rd Jun 1935 | Box 121 \ 4 scan0028 | |
| Letter to S.U. Carburetter Co. Ltd. requesting the supply of needles with specific dimensions. | 6th Jun 1935 | Box 121 \ 4 scan0029 | |
| Letter requesting the supply of carburetter needles with specified dimensions. | 19th Jun 1935 | Box 121 \ 4 scan0030 | |
| Requesting an order for two pairs of the latest type 1 5/8' S.U. carburetters. | 27th Jun 1935 | Box 121 \ 4 scan0031 | |
| Order to The S.U. Company Ltd. for two pairs of vertical piston carburettors with an anti-rattle piston device. | 27th Jun 1935 | Box 121 \ 4 scan0032 | |
| Letter from S.U. Company regarding the specification of Downdraught Carburetters and an anti-rattle device. | 29th Jun 1935 | Box 121 \ 4 scan0033 | |
| Letter from The S.U. Company regarding the supply of D.5's in either bronze or hiduminium. | 21th Jun 1935 | Box 121 \ 4 scan0034 | |
| Letter from The S.U. Company regarding carburetter needle charts, a bend sketch, and flange fittings. | 21th Jun 1935 | Box 121 \ 4 scan0035 | |
| Confirmation of a telephoned order for two pairs of 1 5/8' S.U. horizontal carburetters to The S.U. Company Ltd. | 1st Jul 1935 | Box 121 \ 4 scan0036 | |
| Invoice from The S.U. Company for a reconditioned carburetter. | 2nd Jul 1935 | Box 121 \ 4 scan0037 | |
| Letter to S.U. Company Ltd. requesting four experimental needles with specified dimensions for the 20/25 model. | 2nd Jul 1935 | Box 121 \ 4 scan0038 | |
| (page 2) providing manufacturing instructions for needles with a specific tolerance. | 2nd Jul 1935 | Box 121 \ 4 scan0039 | |
| Private purchase of a carburetter from the S.U. Company. | 3rd Jul 1935 | Box 121 \ 4 scan0040 | |
| Letter from The S.U. Company regarding blueprints for a 1 5/8' throttle horizontal carburetter. | 8th Jul 1935 | Box 121 \ 4 scan0041 | |
| Concerning the dimensions of a large carburetter for a large bore Bentley engine. | 9th Jul 1935 | Box 121 \ 4 scan0042 | |
| Letter to The S.U. Company Ltd. acknowledging receipt of prints for large carburetters. | 9th Jul 1935 | Box 121 \ 4 scan0043 | |
| Request to the S.U. Carburetter Co. for a list of dimensions for the XC2 needle for the standard 25 HP Car. | 12th Jul 1935 | Box 121 \ 4 scan0044 | |
| Request to The S.U. Company Ltd. for two experimental 20/25 HP carburetter needles with specified dimensions. | 15th Jul 1935 | Box 121 \ 4 scan0045 | |
| Letter requesting the S.U. Company to manufacture an experimental 20/25 HP carburettor needle. | 15th Jul 1935 | Box 121 \ 4 scan0046 | |
| Letter to the S.U. Company Ltd. regarding dimensional variations in supplied experimental needles. | 18th Jul 1935 | Box 121 \ 4 scan0047 | |
| Page 2 of a letter requesting needle samples (XC5, XC6 & XC7) for further tests. | 18th Jul 1935 | Box 121 \ 4 scan0048 | |
| Order for XC3 needles from the S.U. Company for a 20/25 carburetter, including a table of needle dimensions. | 18th Jul 1935 | Box 121 \ 4 scan0049 | |
| Request to The S.U. Company Ltd. for the supply of needles with specific dimensions. | 18th Jul 1935 | Box 121 \ 4 scan0050 | |
| Letter to the S.U. Company Limited requesting the supply of 3 pairs of needles with specific dimensions. | 13th Aug 1935 | Box 121 \ 4 scan0051 | |
| Request to the S.U. Company Limited for the supply of needles (SV.4 and SV.5) with specific dimensions. | 23th Aug 1935 | Box 121 \ 4 scan0052 | |
| Acknowledgement letter from The S.U. Company confirming receipt of an order. | 26th Aug 1935 | Box 121 \ 4 scan0053 | |
| Letter to S.U. Company Ltd. regarding defective carburettor float chamber needles and seatings. | 26th Aug 1935 | Box 121 \ 4 scan0054 | |
| Letter to The S.U. Carburetter Co. Ltd. requesting an alteration to an order for S.V. 4 & 5 Needles. | 27th Aug 1935 | Box 121 \ 4 scan0055 | |
| Invoice from S.U.Co. for Jet Needles and requesting payment authorization. | 30th Aug 1935 | Box 121 \ 4 scan0056 | |
| Internal request to place an official order for S.U. carburettor needles. | 31th Aug 1935 | Box 121 \ 4 scan0057 | |
| Letter to The S.U. Co. Ltd. requesting the supply of two dozen needles with specific measurements. | 3rd Sep 1935 | Box 121 \ 4 scan0058 | |
| Letter to The S.U. Company Ltd. requesting the supply of various needles with detailed dimensions. | 16th Sep 1935 | Box 121 \ 4 scan0059 | |
| Letter to the S.U. Carburetter Co. requesting the supply of one pair of 1 3/4' (H.V.5) carburetters in Hiduminium for a 3 1/2 litre Bentley. | 20th Sep 1935 | Box 121 \ 4 scan0060 | |
| Letter to The S.U. Company Ltd. requesting blueprints for a 1 5/8' throttle bore carburetter, type H.V.5. | 21th Sep 1935 | Box 121 \ 4 scan0061 | |
| Invoice from the S.U. Company for Jet Needles and requesting payment authorisation. | 20th Sep 1935 | Box 121 \ 4 scan0062 | |
| Authorisation of payment for S.U. Carburetter Needles. | 21th Sep 1935 | Box 121 \ 4 scan0063 | |
| Letter from The S.U. Company advising of a two-week delivery delay for a pair of H.V.5. carburetters. | 24th Sep 1935 | Box 121 \ 4 scan0064 | |
| Letter from The S.U. Company regarding an amended order for H.V.5. carburetters and float chambers. | 25th Sep 1935 | Box 121 \ 4 scan0065 | |
| Invoice from the S.U. Company for different types of Jet Needles. | 25th Sep 1935 | Box 121 \ 4 scan0066 | |
| Letter to The S.U. Company Limited regarding drawing E.60605 for a 20/25 carburetter. | 26th Sep 1935 | Box 121 \ 4 scan0067 | |
| Letter from The S.U. Company regarding a new range of needles for H.V.5 Carburetters. | 27th Sep 1935 | Box 121 \ 4 scan0068 | |
| Short memo authorising payment for S.U. Carburetter needles. | 27th Sep 1935 | Box 121 \ 4 scan0069 | |
| Letter from The S.U. Company confirming receipt of drawing E.60605 for a 20/25 Carburetter needle. | 27th Sep 1935 | Box 121 \ 4 scan0070 | |
| Letter to The S.U. Co. Ltd. requesting the supply of needles with detailed specifications. | 3rd Oct 1935 | Box 121 \ 4 scan0071 | |
| Letter to S.U. Co. Ltd. requesting a 1 5/8' Downdraught Carburetter and trial needles. | 10th Oct 1935 | Box 121 \ 4 scan0072 | |
| Letter to The S.U. Co. Ltd. requesting the supply of two further pairs of 1 1/2' Carburetters in Hiduminium. | 10th Oct 1935 | Box 121 \ 4 scan0073 | |
| Letter from The S.U. Company regarding a delay in sending a 1 5/8' carburetter. | 11th Oct 1935 | Box 121 \ 4 scan0074 | |
| Receiving needles from the S.U. Co for the Phantom III, and requesting an official order be placed. | 18th Oct 1935 | Box 121 \ 4 scan0075 | |
| Payment for an invoice for HV5 type carburettors from the S.U. Company. | 25th Oct 1935 | Box 121 \ 4 scan0076 | |
| Official order for 3 pairs of HV5 carburettors from the S.U. Company Ltd. | 29th Oct 1935 | Box 121 \ 4 scan0077 | |
| Letter to The S.U. Carburetter Co. requesting a supply of specified carburetter needles. | 31th Oct 1935 | Box 121 \ 4 scan0078 | |
| Letter from The S.U. Company regarding the dispatch of six aluminium disc pieces for a T.2 Type float chamber. | 6th Nov 1935 | Box 121 \ 4 scan0079 | |
| Advice note from The S.U. Company for the dispatch of six aluminium distance pieces. | 6th Nov 1935 | Box 121 \ 4 scan0080 | |
| Request to keep an extra lot of needles sent by mistake from the S.U. Company. | 7th Nov 1935 | Box 121 \ 4 scan0081 | |
| Letter to the S.U. Company Ltd. enquiring about the standard angle for Bentley carburetter float chamber needles. | 8th Nov 1935 | Box 121 \ 4 scan0082 | |
| Requesting an official order for H.V.8 Carburetters and a flexible coupling from the S.U. Company Ltd. | 19th Nov 1935 | Box 121 \ 4 scan0083 | |
| Letter from The S.U. Company regarding modifications to a carburetter blue print. | 18th Nov 1935 | Box 121 \ 4 scan0084 | |
| Letter to The S.U. Company Ltd. requesting the supply of carburettors and a flexible coupling. | 19th Nov 1935 | Box 121 \ 4 scan0085 | |
| Request to send an official order to the S.U. Company Ltd. for a pair of carburettors and a flexible coupling. | 19th Nov 1935 | Box 121 \ 4 scan0086 | |
| Letter requesting the supply of carburettors and a flexible coupling from The S.U. Company Ltd. | 19th Nov 1935 | Box 121 \ 4 scan0087 | |
| Letter from The S.U. Company regarding carburetter slow running issues and non-standard pistons for the 3.5 litre Bentley. | 2nd Dec 1935 | Box 121 \ 4 scan0088 | |
| Continuation letter from The S.U. Company regarding tests on a special pair of carburetter pistons. | 3rd Feb 1933 | Box 121 \ 4 scan0089 | |
| Blueprint for a special brass suction piston for an Alvis 'Firefly'. | 3rd Feb 1933 | Box 121 \ 4 scan0090 | |
| Drawing of a Suction Piston for a HV4 Carburettor. | 12th Apr 1933 | Box 121 \ 4 scan0091 | |
| Invoice for a pair of HV8 Carburetters from The S.U. Company, for which the Stores Dept. has no record of receipt. | 13th Dec 1935 | Box 121 \ 4 scan0092 | |
| Requesting to book in a pair of HV8 Carburetters (1405) delivered by hand. | 14th Dec 1935 | Box 121 \ 4 scan0093 | |
| Letter to The S.U. Company requesting the supply of three pairs of needles, marked L.B.2, with a table of specified dimensions. | 14th Nov 1936 | Box 121 \ 4 scan0094 | |
| Letter to the S.U. Company regarding the preferred type of pistons for horizontal carburetters. | 17th Jan 1936 | Box 121 \ 4 scan0095 | |
| The despatch of an S.U. Carburetter Float Chamber Lid for inspection. | 24th Feb 1936 | Box 121 \ 4 scan0096 | |
| Letter to Mr. Skinner of The S.U. Co. Ltd. regarding a sticking needle issue in a Bentley Float Chamber Lid. | 24th Feb 1936 | Box 121 \ 4 scan0097 | |
| Letter from S.U. Company regarding the return and cleaning of a float chamber lid and needle seating which cured a sticking issue. | 25th Feb 1936 | Box 121 \ 4 scan0098 | |
| Request for carburetter needles and dimension sheets from the S.U. Carburetter Co. Ltd. | 4th Mar 1936 | Box 121 \ 4 scan0099 | |
| Official order for parts from the S.U. Co. | 14th Mar 1936 | Box 121 \ 4 scan0100 | |
| Requesting an order to cover an invoice for 12 Assorted Jet Needles from The S.U.Co. | 2nd Apr 1936 | Box 121 \ 4 scan0101 | |
| Official order for 12 Jet Needles from S.U. Co. Ltd. | 3rd Apr 1936 | Box 121 \ 4 scan0102 | |
| Letter from S.U. Carburetter Co. Ltd. about a customer query concerning carburetter dash pot washers. | 7th Apr 1937 | Box 121 \ 4 scan0103 | |
| Letter to S.U. Carburetter Co. clarifying a customer's query about removing washers from carburettors after a running-in period. | 12th Apr 1937 | Box 121 \ 4 scan0104 | |
| Internal request to order carburetter parts for a Bentley car. | 16th Apr 1936 | Box 121 \ 4 scan0105 | |
| Letter to S.U. Company Ltd. requesting urgent carburetter parts for a Bentley endurance test. | 16th Apr 1936 | Box 121 \ 4 scan0106 | |
| Letter to The S.U. Carburetter Co. Ltd. requesting a pair of modified H.V.S carburetters for a 4¼ litre Bentley. | 27th Apr 1936 | Box 121 \ 4 scan0107 | |
| Request to send an official order to the S.U. Carburetter Co. regarding a previous letter. | 27th Apr 1936 | Box 121 \ 4 scan0108 | |
| Request to place an official order for 3 pairs of carburetter needles with the S.U. Company. | 29th Apr 1936 | Box 121 \ 4 scan0109 | |
| Letter to S.U. Carburetter Co. Ltd. requesting carburettor needles for a 4.5 litre Bentley for the 1936 Le Mans race. | 29th Apr 1936 | Box 121 \ 4 scan0110 | |
| Typed table of numerical values under the headings L.M., L.M.1., and L.M.2. | 29th Apr 1936 | Box 121 \ 4 scan0111 | |
| Letter from The S.U. Company regarding the supply of H.V.8 carburetters for a 4¼ Litre Bentley. | 29th Apr 1936 | Box 121 \ 4 scan0112 | |
| Letter to The S.U. Carburetter Co. Ltd. regarding the supply and modification of H.V.8 carburetters. | 4th May 1936 | Box 121 \ 4 scan0113 | |
| To Roy confirming the collection of Jet assemblies from S.U. Carburetter Co. and requesting an official order. | 15th May 1936 | Box 121 \ 4 scan0114 | |
| Letter to S.U. Carburetter Co. Ltd. requesting a supply of needles and thanking them for a previous delivery. | 18th May 1936 | Box 121 \ 4 scan0115 | |
| Data sheet with two tables of numerical values, titled L.M.4. and L.M.3. | 30th May 1938 | Box 121 \ 4 scan0116 | |
| Invoice for jet needles from the S.U. Company and requesting payment authorization. | 30th May 1938 | Box 121 \ 4 scan0117 | |
| Requesting an official order be placed with the S.U. Company for LM4 and LM3 needles. | 4th Jun 1936 | Box 121 \ 4 scan0118 | |
| Telegram requesting the immediate dispatch of various types of carburettor needles. | 15th Jul 1936 | Box 121 \ 4 scan0119 | |
| Requesting an official order be passed to S.U. Co.Ltd. for carburetter needles. | 15th Jul 1936 | Box 121 \ 4 scan0120 | |
| Request to The S.U. Carburetter Co. Ltd. for the supply of specific carburetter needles. | 6th Aug 1936 | Box 121 \ 4 scan0121 | |
| Request to send an official order to the S.U. Carburetter Co. Ltd. for various needles. | 13th Aug 1936 | Box 121 \ 4 scan0122 | |
| Letter to the S.U. Carburetter Co. Ltd. regarding an incomplete order for carburetter needles. | 13th Aug 1936 | Box 121 \ 4 scan0123 | |
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