| Description | Date | Identifier | |
| Official order be placed for parts from the Zenith Carburetter Co. Ltd. | 12th Nov 1935 | Box 20 \ 9 Scan018 | |
| Request to issue an official order for Stromberg carburetter parts for carburetter No. DB-32. | 15th Nov 1935 | Box 20 \ 9 Scan019 | |
| Performance report and specifications for a Stromberg carburetter D.B.42. | 16th Nov 1935 | Box 20 \ 9 Scan020 | |
| Letter from Zenith Carburetter Co. Ltd. regarding the supply and testing of various carburetter parts and models. | 20th Nov 1935 | Box 20 \ 9 Scan021 | |
| Letter from the Zenith Carburetter Co. confirming a carburetter has passed a petrol leak test. | 20th Nov 1935 | Box 20 \ 9 Scan022 | |
| Proposing the standardisation of the Duplex Downdraught Stromberg carburetter system for the Phantom III. | 21th Nov 1935 | Box 20 \ 9 Scan023 | |
| Parts affected by the change to a Duplex carburetter on the Phantom III. | 22th Nov 1935 | Box 20 \ 9 Scan024 | |
| Invoice from The Zenith Carburetter Co. Ltd. for nozzles and jets, seeking payment authorisation. | 22th Nov 1935 | Box 20 \ 9 Scan025 | |
| Letter to the Zenith Carburetter Co. Ltd. about sourcing twin Stromberg carburetters for an experimental twin six engine. | 23th Nov 1935 | Box 20 \ 9 Scan026 | |
| Letter urgently requesting information on the Stromberg carburetter within a fortnight. | 23th Nov 1935 | Box 20 \ 9 Scan027 | |
| Invoice from Zenith Carburetter Co. Ltd. for choke valves and a request for payment authorization. | 25th Nov 1935 | Box 20 \ 9 Scan028 | |
| Confirming the official order of carburetter pieces. | 26th Nov 1935 | Box 20 \ 9 Scan029 | |
| Letter to Zenith Carburetter Co. Ltd. regarding the return of duplicate Stromberg parts. | 26th Nov 1935 | Box 20 \ 9 Scan030 | |
| Request to manufacture a Cylindrical Petrol Float for experiments on a Stromberg Carburetter. | 26th Nov 1935 | Box 20 \ 9 Scan031 | |
| Instructing the dispatch of Stromberg carburetter parts to Zenith Carburetter Co. Ltd. due to an erroneous order duplication. | 26th Nov 1935 | Box 20 \ 9 Scan032 | |
| Letter from Zenith Carburetter Co. Ltd discussing manufacturing and delivery of a Twin Stromberg Carburetter. | 26th Nov 1935 | Box 20 \ 9 Scan033 | |
| Letter from The Zenith Carburetter Co. discussing the modification, delivery, and pricing of carburetters. | 26th Nov 1935 | Box 20 \ 9 Scan034 | |
| Letter from Zenith Carburetter Co. Ltd. providing tentative pricing for Twin Stromberg Carburetters. | 27th Nov 1935 | Box 20 \ 9 Scan035 | |
| Page 2 of a letter from The Zenith Carburetter Co. regarding a first-class carburetter job. | 27th Nov 1935 | Box 20 \ 9 Scan036 | |
| Letter to Daimler enquiring about a flooding issue with a Stromberg Downdraught Carburetter on a gradient. | 28th Nov 1935 | Box 20 \ 9 Scan037 | |
| Letter to The Zenith Carburetter Co. Ltd. acknowledging receipt of prices. | 29th Nov 1935 | Box 20 \ 9 Scan038 | |
| Internal order request for three E.E.3 Duplex downdraught Stromberg carburetters for a Phantom III. | 29th Nov 1935 | Box 20 \ 9 Scan039 | |
| The creation of official orders for Zenith and Stromberg carburettor parts. | 29th Nov 1935 | Box 20 \ 9 Scan040 | |
| Invoice from Zenith Carburetter Ltd. for carburettor parts. | 29th Nov 1935 | Box 20 \ 9 Scan041 | |
| Official order be passed to the Zenith Carburetter Co. for jets. | 3rd Dec 1935 | Box 20 \ 9 Scan042 | |
| Requesting alterations to the induction systems of two cars for development and testing purposes. | 4th Dec 1935 | Box 20 \ 9 Scan043 | |
| Invoice from Zenith Carburetter Co. Ltd. for H.S. Bleeds and a request for payment. | 9th Dec 1935 | Box 20 \ 9 Scan044 | |
| The results of testing a heated riser for a Duplex Stromberg Carburetter. | 10th Dec 1935 | Box 20 \ 9 Scan045 | |
| Potential flooding of Stromberg down-draught carburetters on an incline and inquiring about how American cars handle this issue. | 1st Dec 1935 | Box 20 \ 9 Scan046 | |
| Letter to Zenith Carburetter Co. Ltd. regarding the return of four defective bye-pass jets. | 13th Dec 1935 | Box 20 \ 9 Scan047 | |
| Requesting the manufacture of 3 pairs of chokes for Stromberg carburetters for the Phantom III. | 13th Dec 1935 | Box 20 \ 9 Scan048 | |
| Requesting the production of a brass induction system for the Ph.III Stromberg Duplex Carburetter. | 13th Dec 1935 | Box 20 \ 9 Scan049 | |
| Issue of Stromberg carburetter flooding on gradients. | 13th Dec 1935 | Box 20 \ 9 Scan050 | |
| Requesting an official order for H.S. Bleeds from Zenith Carburetter Co. Ltd. | 9th Dec 1935 | Box 20 \ 9 Scan051 | |
| Telegram requesting a supply of three sets of parts for spring-loaded hand-controlled throttle chokes. | 16th Dec 1935 | Box 20 \ 9 Scan052 | |
| Letter from The Zenith Carburetter Co. Ltd concerning the dispatch of parts for a Hand Strangler Control conversion. | 16th Dec 1935 | Box 20 \ 9 Scan053 | |
| Proposal, pricing, and delivery of Stromberg carburettors for the Phantom III model from the Zenith Company. | 16th Dec 1935 | Box 20 \ 9 Scan054 | |
| Questioning the benefits and drawbacks of down draught Stromberg carburetters, referencing flooding issues. | 17th Dec 1935 | Box 20 \ 9 Scan055 | |
| To swap engine components between two cars to test an automatic carburetter scheme against a hand-controlled one. | 17th Dec 1935 | Box 20 \ 9 Scan056 | |
| Letter to The Zenith Carburetter Co. Ltd. regarding an incorrectly supplied carburetter and an urgent modification required for a petrol leak. | 18th Dec 1935 | Box 20 \ 9 Scan057 | |
| Letter detailing modifications and specifications for DA-42 carburetors. | 1st Dec 1935 | Box 20 \ 9 Scan058 | |
| Duplex Stromberg carburetter modification for the Phantom III. | 20th Dec 1935 | Box 20 \ 9 Scan059 | |
| Letter from Zenith Carburetter Co. Ltd apologising for delays due to moving factory and acknowledging an issue with a D.A. Carburetter. | 21th Dec 1935 | Box 20 \ 9 Scan060 | |
| Explaining the decision to use a downdraught carburetter on the big bore 20/25 engine. | 21th Dec 1935 | Box 20 \ 9 Scan061 | |
| Three cold start tests performed on a Stromberg Carburetter. | 21th Dec 1935 | Box 20 \ 9 Scan062 | |
| Letter from Bendix to Zenith discussing carburetter components like throttle shafts, pump nozzles, and electric choke units. | 23th Dec 1935 | Box 20 \ 9 Scan063 | |
| Letter from Bendix Products Corporation regarding the performance of automatic choke set-ups. | 30th Dec 1935 | Box 20 \ 9 Scan064 | |
| Invoice for carburettor parts from Zenith Carburetter Co. and authorising payment. | 30th Dec 1935 | Box 20 \ 9 Scan065 | |
| Letter to Zenith Carburetter Co. Ltd. inquiring about a Stromberg Carburetter shut-off scheme. | 30th Dec 1935 | Box 20 \ 9 Scan066 | |
| Letter to The Zenith Carburetter Co. Ltd. regarding a delayed order for EE-3 duplex carburetters and providing the required specification. | 1st Jan 1936 | Box 20 \ 9 Scan067 | |
| Request for a set of parts for an EE-3 carburetter. | 1st Jan 1936 | Box 20 \ 9 Scan068 | |
| Observations on carburetter testing apparatus at Strombergs. | 2nd Jan 1936 | Box 20 \ 9 Scan069 | |
| Blueprint of Stromberg equipment for testing aero engines. | 1st Jan 1935 | Box 20 \ 9 Scan070 | |
| Blank document page stamped by the Print Room in Derby. | 1st Jan 1935 | Box 20 \ 9 Scan071 | |
| Requesting an official order be passed to the Zenith Carburetter Co. for parts already received. | 3rd Jan 1936 | Box 20 \ 9 Scan072 | |
| Internal request to order two Stromerg carburettors type DA.42 with detailed setting specifications. | 6th Jan 1936 | Box 20 \ 9 Scan073 | |
| Performance comparison and analysis of a Duplex Down Draught Carburetter for the Phantom III. | 7th Jan 1936 | Box 20 \ 9 Scan074 | |
| Continued report on carburettor modifications, discussing mixture distribution, throttle response, and material changes for weight saving. | 7th Jan 1936 | Box 20 \ 9 Scan075 | |
| To place an order for a Buick transmission assembly and Zenith carburetter parts. | 7th Jan 1936 | Box 20 \ 9 Scan076 | |
| Invoice from Zenith Carburetter Co. Ltd. for By Pass Jets. | 8th Jan 1936 | Box 20 \ 9 Scan077 | |
| Procedural issues with invoicing and requisitioning for parts supplied by Stromberg & Zenith Carburetter Co. | 10th Jan 1936 | Box 20 \ 9 Scan078 | |
| Letter to the Zenith Carburetter Co. Ltd. regarding an incorrect invoice for faulty, returned By-Pass Jets. | 10th Jan 1936 | Box 20 \ 9 Scan079 | |
| Specification sheet for a DA-42 Stromberg Carburetter, model 18-G-IV (Large Bore). | 11th Jan 1936 | Box 20 \ 9 Scan080 | |
| Final specification and performance notes for a Stromberg carburetter on car 21-C-IV (Large Bore). | 15th Jan 1936 | Box 20 \ 9 Scan081 | |
| Settings and modifications for a Stromberg DA-42 carburetter on car 20-G-IV. | 13th Jan 1936 | Box 20 \ 9 Scan082 | |
| Specification of a DB-42 Stromberg Carburetter and other component modifications for car 19-G-IV. | 13th Jan 1936 | Box 20 \ 9 Scan083 | |
| Replacement Bypass Jets and a potential invoice error with Zenith Carburetter Co. | 13th Jan 1936 | Box 20 \ 9 Scan084 | |
| Visit to the Zenith Carburetter Co. Ltd. to discuss the production of carburetters. | 17th Jan 1936 | Box 20 \ 9 Scan085 | |
| Suggestion to expedite carburetter production for early testing and an offer of support. | 17th Jan 1936 | Box 20 \ 9 Scan086 | |
| Official order for parts received from the Zenith Carburetter Co. | 20th Jan 1936 | Box 20 \ 9 Scan087 | |
| Requesting an order of 6 metering jets for a 25 HP Stromberg Carburetter. | 21th Jan 1936 | Box 20 \ 9 Scan088 | |
| The development and performance of a new turbulent cylinder head and induction pipe drain for the Large Bore 20/25 model. | 22th Jan 1936 | Box 20 \ 9 Scan089 | |
| Review of the clutch position and flywheel orders for the 20/25 and 20/27 models to suit the Borg & Beck clutch. | 22th Jan 1936 | Box 20 \ 9 Scan090 | |
| Test report on the induction pipe drainage scheme for a 25/30 HP engine. | 22th Jan 1936 | Box 20 \ 9 Scan091 | |
| Induction pipe drain tests, noting flow rates and design adaptations. | 22th Jan 1936 | Box 20 \ 9 Scan092 | |
| Proposal to use bronze throttle bodies for Stromberg carburettors instead of the standard cast-iron. | 22th Jan 1936 | Box 20 \ 9 Scan093 | |
| Graph of air/fuel ratio versus engine RPM for a 25/30 HP engine with a Stromberg DA 42 carburettor at full and half throttle. | 22th Jan 1936 | Box 20 \ 9 Scan094 | |
| Blank page with a print room stamp. | 22th Jan 1936 | Box 20 \ 9 Scan095 | |
| Power comparison graph for the 20/25 HP and 25/30 HP engines, plotting BHP and BMEP against RPM. | 2nd Jan 1936 | Box 20 \ 9 Scan096 | |
| Drawing showing a modification to an induction pipe for a 25/30 HP engine. | 22th Jan 1936 | Box 20 \ 9 Scan097 | |
| Blank document page stamped by the Print Room in Derby. | 22th Jan 1936 | Box 20 \ 9 Scan098 | |
| Specifications for the DA.42 Stromberg carburetter, unit C-16. | 22th Jan 1936 | Box 20 \ 9 Scan099 | |
| Summary of settings and modifications for a Stromberg DB.42 carburetter on unit E-3-M. | 22th Jan 1936 | Box 20 \ 9 Scan100 | |
| Proposal to order 50 American-made Stromberg Carburetters for the Phantom III chassis due to production difficulties and time constraints. | 22th Jan 1936 | Box 20 \ 9 Scan101 | |
| Sourcing, pricing, and delivery of proposed Stromberg Carburetters for the Phantom III model. | 16th Dec 1935 | Box 20 \ 9 Scan102 | |
| Choice of material (cast iron vs. bronze) for Stromberg carburettor bodies. | 23th Jan 1936 | Box 20 \ 9 Scan103 | |
| Sourcing of Stromberg carburettors for the Phantom III chassis, arguing for domestic manufacture over importation. | 23th Jan 1936 | Box 20 \ 9 Scan104 | |
| Carburetter production options for the Phantom III, comparing American versus English manufacturing. | 1st Jan 1936 | Box 20 \ 9 Scan105 | |
| Material choice for Stromberg carburettor bodies, advocating for cast iron over other options. | 23th Jan 1936 | Box 20 \ 9 Scan106 | |
| Cover letter for a report on performance issues with the Phantom III Induction System road tests. | 24th Jan 1936 | Box 20 \ 9 Scan107 | |
| Modifications to the Phantom III induction system and comparative tests. | 24th Jan 1936 | Box 20 \ 9 Scan108 | |
| Performance graph comparing power curves for three different induction systems on a Phantom III engine. | 22th Jan 1936 | Box 20 \ 9 Scan109 | |
| Stamped by the print room upon receipt. | 25th Jan 1936 | Box 20 \ 9 Scan110 | |
| Requesting an official order for parts, with the exception of the Seating & Needle Assembly. | 25th Jan 1936 | Box 20 \ 9 Scan111 | |
| Invoice from Zenith Carburetter Co. Ltd. requiring a check against an internal order. | 23th Jan 1936 | Box 20 \ 9 Scan112 | |
| Report on a Stromberg carburetter and requesting further checks on the accelerator pump spindle. | 31th Jan 1936 | Box 20 \ 9 Scan113 | |
| Confirming a credit note from The Zenith Carburetter Co. Ltd. has been received to cancel an invoice for By Pass Jets. | 3rd Feb 1936 | Box 20 \ 9 Scan114 | |
| Letter to The Zenith Carburetter Co. Ltd. enquiring about the delivery status of 3 duplex Stromberg carburettors. | 3rd Feb 1936 | Box 20 \ 9 Scan115 | |
| Modifications to the Phantom III Duplex Stromberg Downdraught Induction System and subsequent performance improvements. | 11th Feb 1936 | Box 20 \ 9 Scan116 | |
| Outstanding tests required for a petrol drain system and overflow vent pipe. | 11th Feb 1936 | Box 20 \ 9 Scan117 | |
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