| Description | Date | Identifier | |
| Suitability of different radiator designs and construction methods. | 19th Dec 1918 | Box 38 \ 2 Scan002 | |
| Proposed construction methods for tanks, side plates, and tubes. | 19th Dec 1918 | Box 38 \ 2 Scan003 | |
| Samples, potential in-house manufacturing, and the exclusive employment of Mr. Foy. | 19th Dec 1918 | Box 38 \ 2 Scan004 | |
| Dismantling a radiator in the Experimental Department to create detailed drawings. | 13th Dec 1918 | Box 38 \ 2 Scan005 | |
| Request to arrange for a specific nickel-plated square tube radiator to be sent to the Experimental Department. | 13th Dec 1918 | Box 38 \ 2 Scan006 | |
| Notes from a visit with Mr. Royce discussing the design and improvement of radiators for future car chassis. | 16th Dec 1918 | Box 38 \ 2 Scan007 | |
| Construction of a tank from nickel silver sheets or pressings. | 16th Dec 1913 | Box 38 \ 2 Scan008 | |
| Extract requesting a sketch for a round tube radiator for a 40/50 chassis. | 17th Dec 1918 | Box 38 \ 2 Scan009 | |
| Requesting the unsweating of a radiator top tank to examine its construction and that of its round tubes. | 21th Dec 1918 | Box 38 \ 2 Scan010 | |
| Different radiator tube designs and materials for testing. | 4th Jan 1919 | Box 38 \ 2 Scan011 | |
| Continued memo clarifying the placement of wire loops on a tank or end plate for strength. | 9th Dec 1918 | Box 38 \ 2 Scan012 | |
| Three radiator designs and the suspension method for the 'after-the-war' chassis. | 9th Dec 1918 | Box 38 \ 2 Scan013 | |
| Specifications for alterations to be made to the 40/50 HP chassis. | 8th Jan 1919 | Box 38 \ 2 Scan014 | |
| The alterations and experimental work for the 40-50 HP present type chassis. | 18th Dec 1918 | Box 38 \ 2 Scan015 | |
| Specification for testing three different experimental radiator designs on a bumping rig. | 18th Dec 1918 | Box 38 \ 2 Scan016 | |
| Radiator design alternatives, materials, performance issues, and testing requirements. | 18th Dec 1918 | Box 38 \ 2 Scan017 | |
| Alternative radiator construction methods to reduce weight while maintaining strength. | 17th Jan 1919 | Box 38 \ 2 Scan018 | |
| Optimal radiator tube size for the 40/50 HP chassis. | 20th Jan 1919 | Box 38 \ 2 Scan019 | |
| Observation comparing the carburation performance of older cars with cast iron pistons against the 49GB model. | 26th Apr 1917 | Box 38 \ 2 Scan020 | |
| Radiator and shutter design, focusing on tube size and shutter placement for cars and aircraft. | 26th Apr 1917 | Box 38 \ 2 Scan021 | |
| Failure and collapse of round copper radiator tubes on car 49GB. | 5th Feb 1919 | Box 38 \ 2 Scan022 | |
| Potential causes of radiator tube collapse. | 12th Feb 1919 | Box 38 \ 2 Scan023 | |
| Letter to Messrs. Greenwood & Batley Ltd. regarding the dispatch of a sample Radiator. | 13th Feb 1919 | Box 38 \ 2 Scan024 | |
| Letter and sample tubes from Reliance Mnfg. Co. about radiators. | 28th Feb 1919 | Box 38 \ 2 Scan025 | |
| Letter from Reliance Manufacturing Co. regarding the construction, delivery, and quality of radiator tubes for a bumper test. | 27th Feb 1919 | Box 38 \ 2 Scan026 | |
| Letter concluding that construction can be improved by using die-produced components for a better finish. | 4th Mar 1919 | Box 38 \ 2 Scan027 | |
| Arranging a meeting to discuss a re-inforced radiator. | 4th Mar 1919 | Box 38 \ 2 Scan028 | |
| Comparison of radiators from different manufacturers for a 40/50 HP chassis. | 10th Mar 1919 | Box 38 \ 2 Scan029 | |
| Discrepancy where radiator suppliers fitted one vent pipe instead of the two specified on drawings, enforcing stricter adherence to new detailed drawings for future production. | 11th Mar 1919 | Box 38 \ 2 Scan030 | |
| Road test detailing engine performance and fuel consumption in relation to radiator temperature. | 13th Mar 1919 | Box 38 \ 2 Scan031 | |
| Radiator modifications and comparing a water jacket on the induction pipe for car 7-CA. | 13th Mar 1919 | Box 38 \ 2 Scan032 | |
| Particulars of a Greenwood & Batley radiator for a 40/50 chassis. | 17th Mar 1919 | Box 38 \ 2 Scan033 | |
| Design improvements for radiator blocking plates on the 40/50 chassis. | 4th Apr 1919 | Box 38 \ 2 Scan034 | |
| Page discussing the operational simplicity of having the whole radiator in use. | 4th Apr 1919 | Box 38 \ 2 Scan035 | |
| Design and placement of louvres for future radiators. | 9th Apr 1919 | Box 38 \ 2 Scan036 | |
| Design specifications for a radiator louvre frame to control airflow, including materials and operation. | 1st Nov 1923 | Box 38 \ 2 Scan037 | |
| Thermostat placement and the requirement for a thermometer on production cars. | 1st May 1919 | Box 38 \ 2 Scan038 | |
| Requesting an update on the status of 40/50 HP radiators for experimental work and testing. | 12th May 1919 | Box 38 \ 2 Scan039 | |
| Technical update regarding chassis components including batteries, wiring, thermometers, and coils. | 14th May 1919 | Box 38 \ 2 Scan040 | |
| Methods for radiator temperature control, including screening and a water bye-pass system. | 28th May 1919 | Box 38 \ 2 Scan041 | |
| Report and a copy of a note regarding 40/50 HP Chassis Radiators. | 29th May 1919 | Box 38 \ 2 Scan042 | |
| Material and design of a radiator blanking-off piece for the 40/50 chassis. | 1st Jun 1919 | Box 38 \ 2 Scan043 | |
| Design of bonnets and the effectiveness of radiator shutters for the 40/50 chassis. | 5th Jun 1919 | Box 38 \ 2 Scan044 | |
| Recommendation to alter the position of bonnet stud handles for improved ease of use. | 5th Jun 1919 | Box 38 \ 2 Scan045 | |
| Results of testing a radiator bye-pass system on a 40/50 chassis. | 10th Jun 1919 | Box 38 \ 2 Scan046 | |
| Radiator valve design to prevent freezing and maintain engine temperature. | 10th Jun 1919 | Box 38 \ 2 Scan047 | |
| Ordering of radiators due to material shortages and deciding future policy on larger tube radiators. | 24th Jun 1919 | Box 38 \ 2 Scan048 | |
| List of parts and their corresponding numbers for the assembly of chassis 1.E.K. | 30th Jun 1919 | Box 38 \ 2 Scan049 | |
| Difficulties in maintaining engine water temperature in traffic and proposing a radiator bye-pass system. | 22th Jul 1919 | Box 38 \ 2 Scan050 | |
| Test report on chassis 1EX detailing radiator performance, including water boiling on hills and a subsequent aluminium piston seizure. | 28th Jul 1919 | Box 38 \ 2 Scan051 | |
| Engine performance, detailing issues with boiling, vibration, misfiring, and fuel consumption during a test run. | 1st Jul 1919 | Box 38 \ 2 Scan052 | |
| The failure of a Marston Radiator during bumping tests. | 11th Aug 1919 | Box 38 \ 2 Scan053 | |
| Chasing a report on radiator tube sizes and confirming existing and future orders. | 13th Aug 1919 | Box 38 \ 2 Scan054 | |
| Instructions regarding a faulty radiator returned to the Marston Radiator Company and a request for further testing. | 14th Aug 1919 | Box 38 \ 2 Scan055 | |
| Radiator tube sizes for the 40/50 chassis and authorising an order for 250 units. | 22th Aug 1919 | Box 38 \ 2 Scan056 | |
| New round tube honey-comb radiator for the 40/50 chassis. | 9th Sep 1919 | Box 38 \ 2 Scan057 | |
| Seeking guidance on whether to widen the sourcing of radiators beyond the Marston Company to include Orme Evans. | 9th Sep 1919 | Box 38 \ 2 Scan058 | |
| The merits of flat aluminium strips versus circular baffles for radiators. | 9th Sep 1919 | Box 38 \ 2 Scan059 | |
| Design and issues with radiator blanking-off plates for managing engine temperature. | 18th Sep 1919 | Box 38 \ 2 Scan060 | |
| Quality of Orme Evans radiators for the 40/50 chassis and the decision to place orders. | 19th Sep 1919 | Box 38 \ 2 Scan061 | |
| List of new and experimental parts fitted to the FE Bumper Chassis X.1131. | 2nd Oct 1919 | Box 38 \ 2 Scan062 | |
| Failures of the 40/50 radiator suspension's ball end cantilever during bumping tests, with recommended design and process changes. | 10th Oct 1919 | Box 38 \ 2 Scan063 | |
| Investigation into potential corrosion on radiators stored without water. | 16th Oct 1919 | Box 38 \ 2 Scan064 | |
| Concluding page of a document advising against using certain components due to the likelihood of future trouble. | 20th Oct 1919 | Box 38 \ 2 Scan065 | |
| Advising on radiator management for optimal engine performance during autumn. | 20th Oct 1919 | Box 38 \ 2 Scan066 | |
| Decisions on parts held up for Series L & M chassis, specifically the dynamo, wiring, and radiator. | 21th Oct 1919 | Box 38 \ 2 Scan067 | |
| Mr. Royce's suggestion to modify the 40/50 HP radiator suspension. | 11th Nov 1919 | Box 38 \ 2 Scan068 | |
| Proposing a test to compare the cooling efficiency of Berlin black versus dead black finishes on radiators. | 7th Nov 1919 | Box 38 \ 2 Scan069 | |
| Extract from a letter regarding the process of blacking the radiator matrix, detailing experiments and the importance of cleaning before enamelling. | 13th Nov 1919 | Box 38 \ 2 Scan070 | |
| Tests on the efficiency of blackening radiators, noting no change in efficiency but poor application quality. | 14th Nov 1919 | Box 38 \ 2 Scan071 | |
| Instruction sheet detailing radiator tests with temperature readings from hill climb and road tests. | 17th Jul 1919 | Box 38 \ 2 Scan072 | |
| Radiator test report recording water and air temperatures during hill climbs and a three-mile stretch. | 15th Nov 1919 | Box 38 \ 2 Scan073 | |
| Bumping tests and alterations for the 40/50 HP radiator suspension. | 14th Nov 1919 | Box 38 \ 2 Scan074 | |
| Proposal to increase the slack for the spheres carrying the chassis radiator and its bottom tank. | 17th Nov 1919 | Box 38 \ 2 Scan075 | |
| Requesting a report on two blackened radiators sent to the Experimental Department. | 17th Nov 1919 | Box 38 \ 2 Scan076 | |
| The reaming procedure for the 40/50 Chassis radiator bottom tanks and caps before despatching to makers. | 26th Nov 1919 | Box 38 \ 2 Scan077 | |
| The release for manufacture of L, M, and N series, focusing on a delay to alter the radiator design. | 26th Nov 1919 | Box 38 \ 2 Scan078 | |
| Extract detailing a bumping test on an Orme Evans radiator for a 40/50 chassis. | 27th Nov 1919 | Box 38 \ 2 Scan079 | |
| Trial of two new black enamels, 'Apex' and 'Optical', on cylinder blocks and suggesting their use on radiators. | 2nd Dec 1919 | Box 38 \ 2 Scan080 | |
| Materials for experimental radiators, suggesting the use of pre-polished metal sheets to better detect flaws. | 10th Dec 1919 | Box 38 \ 2 Scan081 | |
| Weight specifications for Radiator E.17143, empty and full of water. | 16th Dec 1919 | Box 38 \ 2 Scan082 | |
| Dispute over the cost and quality of the black finish on Marston radiators. | 18th Dec 1919 | Box 38 \ 2 Scan083 | |
| Radiator test results with temperature and speed readings at various locations. | 28th Dec 1919 | Box 38 \ 2 Scan084 | |
| Experimental radiator temperature test readings from road tests including Ticknall and London Road. | 12th Jan 1920 | Box 38 \ 2 Scan085 | |
| Sample pressing for a radiator top tank supplied by the Excelsior Motor Co. | 12th Jan 1920 | Box 38 \ 2 Scan086 | |
| Use of rubber versus leather washers for a radiator blanking plate and fittings. | 1st Mar 1920 | Box 38 \ 2 Scan087 | |
| The fixing of radiator plates to prevent water boiling due to seasonal weather conditions. | 15th Mar 1920 | Box 38 \ 2 Scan088 | |
| Proposed new swivelling fixing method for a car mascot. | 1st Apr 1920 | Box 38 \ 2 Scan089 | |
| The faulty fitting of radiator brackets and the need for improved inspection. | 8th Apr 1920 | Box 38 \ 2 Scan090 | |
| Discrepancy between the lengths of radiator tubes ordered for repairs versus those required for standard production. | 1st May 1920 | Box 38 \ 2 Scan091 | |
| Clarifying the specifications for radiator tubes, distinguishing between those for repairs and those for complete sets. | 10th May 1920 | Box 38 \ 2 Scan092 | |
| Radiator performance test results for a 49-GB car with 10mm and 8mm tubes. | 13th May 1920 | Box 38 \ 2 Scan093 | |
| Log of radiator performance tests, recording temperatures and speeds on Ticknall Hill and London Road. | 13th May 1920 | Box 38 \ 2 Scan094 | |
| Test report detailing radiator performance with temperature and speed readings on Ticknall Hill. | 14th May 1920 | Box 38 \ 2 Scan095 | |
| Standardisation and design of capillary tube thermometers and radiator shutters for the 40/50 HP chassis. | 28th May 1919 | Box 38 \ 2 Scan096 | |
| Suitability of a roll top desk blind compared to a hand-operated shutter for a chassis. | 28th May 1919 | Box 38 \ 2 Scan097 | |
| Requesting a copy of a note concerning 40/50 HP Chassis Radiators. | 29th May 1919 | Box 38 \ 2 Scan098 | |
| Blacking of the radiator matrix, including an extract from the radiator makers. | 13th Nov 1919 | Box 38 \ 2 Scan099 | |
| Inquiring about arrangements for blacking the radiator matrix before chassis despatch. | 12th Dec 1919 | Box 38 \ 2 Scan100 | |
| Temperature test report for Chassis 35.FW with a Limousine body. | 7th Jun 1920 | Box 38 \ 2 Scan101 | |
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