| Description | Date | Identifier | |
| Harrison bonded core radiator blocks for Peregrine and the need for radiator shells. | 12th Sep 1932 | Box 149a \ 2 scan0071 | |
| Letter to Gallay Radiator Co. Ltd. requesting details on thermostats for a car radiator and for cutting off cylinder lubrication. | 12th Sep 1932 | Box 149a \ 2 scan0072 | |
| Letter from Gallay Radiator Co. Ltd. regarding the specifications and supply of their 'Hercule' Thermostat. | 13th Sep 1932 | Box 149a \ 2 scan0073 | |
| Letter to Gallay Radiator Co. regarding specifications for a radiator and an oil thermostat. | 15th Sep 1932 | Box 149a \ 2 scan0074 | |
| Blueprint of a thermostat bellows with dimensions and operating parameters. | 26th Sep 1932 | Box 149a \ 2 scan0075 | |
| Request for Radiator Shells to be despatched to Marstons, Wolverhampton, for fitting 'Peregrine' film centres. | 26th Sep 1932 | Box 149a \ 2 scan0076 | |
| Letter from Gallay Radiator Co. Ltd. regarding the supply of two types of 'Hercule' thermostats for evaluation. | 29th Sep 1932 | Box 149a \ 2 scan0077 | |
| Chasing the completion of a tank for a 'Bensport' Radiator. | 6th Oct 1932 | Box 149a \ 2 scan0078 | |
| Update on the progress of radiator shells for the Harrison film matrix for despatch to Marstons. | 10th Oct 1932 | Box 149a \ 2 scan0079 | |
| Request to order two Harrison bonded core radiator blocks for Bensport, with specified dimensions. | 18th Oct 1932 | Box 149a \ 2 scan0080 | |
| Sample film block radiator from Searle Radiator Company in comparison to other types. | 18th Oct 1932 | Box 149a \ 2 scan0081 | |
| Solutions for engine overheating complaints by using different radiator matrix types. | 26th Oct 1932 | Box 149a \ 2 scan0082 | |
| Customer's complaint about engine boiling on chassis 116-GW, possibly due to a heavy body. | 18th Oct 1932 | Box 149a \ 2 scan0083 | |
| Dimensional correction for an order of Harrison Bonded Core Radiator blocks. | 3rd Nov 1932 | Box 149a \ 2 scan0084 | |
| Requesting the supply of a Phantom II radiator for modification and discussing shells for the Peregrine project. | 4th Nov 1932 | Box 149a \ 2 scan0085 | |
| Order for two Marston Mark 111 Radiator Matrices for Bensport. | 8th Nov 1932 | Box 149a \ 2 scan0086 | |
| Fitting and testing a Marston Matrix type radiator on a Bump Chassis. | 8th Nov 1932 | Box 149a \ 2 scan0087 | |
| Letter to John Marston Ltd. regarding the completion and delivery of two radiator shells. | 8th Nov 1932 | Box 149a \ 2 scan0088 | |
| Request to place an official order for radiator matrices for Phantom II vehicles. | 10th Nov 1932 | Box 149a \ 2 scan0089 | |
| Request to place an official order with Marstons to build a standard Phantom II radiator with a Marston Mark III matrix. | 2nd Dec 1932 | Box 149a \ 2 scan0090 | |
| Instructing the despatch of starting handle tunnels for radiator blocks to J. Marston Ltd. | 22th Dec 1932 | Box 149a \ 2 scan0091 | |
| Letter to John Marston Ltd. regarding modifications to radiator blocks and the assembly of a new radiator for a Phantom II car. | 2nd Nov 1932 | Box 149a \ 2 scan0092 | |
| Letter regarding the completion of work on Phantom and Harrison Vee type radiators. | 2nd Nov 1932 | Box 149a \ 2 scan0093 | |
| Blueprint showing the position of the starting handle tube within the Marston radiator matrix. | 5th Dec 1932 | Box 149a \ 2 scan0094 | |
| Letter from a supplier regarding modifications and supply of radiator blocks and a matrix. | 5th Dec 1932 | Box 149a \ 2 scan0095 | |
| Benefits and adoption of an anti-spilling valve on all radiator models. | 9th Dec 1932 | Box 149a \ 2 scan0096 | |
| Replacement of 20/25HP car radiator matrix blocks by John Marstons Ltd. | 9th Dec 1932 | Box 149a \ 2 scan0097 | |
| Letter to John Marston Ltd. regarding modifications to 20/25 HP car radiators and a request for a quotation. | 10th Dec 1932 | Box 149a \ 2 scan0098 | |
| Letter from John Marston Limited regarding a delay in dispatching a radiator containing a Harrison Vee Block. | 10th Dec 1932 | Box 149a \ 2 scan0099 | |
| Letter from John Marston Ltd confirming alterations to two 20/25 HP radiators. | 13th Dec 1932 | Box 149a \ 2 scan0100 | |
| Letter to John Marston Ltd. regarding the sending of a starting handle tunnel and acknowledging the despatch of Harrison Matrix radiators. | 13th Dec 1932 | Box 149a \ 2 scan0101 | |
| Letter to John Marston Ltd. correcting the thickness specification for 20/25 HP car radiators. | 14th Dec 1932 | Box 149a \ 2 scan0102 | |
| Letter from John Marston Ltd. acknowledging an alteration to a radiator block order. | 16th Dec 1932 | Box 149a \ 2 scan0103 | |
| Letter to John Marston Ltd. regarding the return of a damaged Phantom II Bottom Tank and urging the delivery of other radiators. | 21th Dec 1932 | Box 149a \ 2 scan0104 | |
| Letter to John Marston Ltd. regarding the fitting of two starting handle tunnels into core blocks. | 22th Dec 1932 | Box 149a \ 2 scan0105 | |
| Request to prepare two sets of Phantom II radiator parts, less matrix, to be sent to Marstons for fitting Harrison type matrices. | 6th Jan 1933 | Box 149a \ 2 scan0106 | |
| Letter to John Marsden Ltd. regarding a discrepancy found in two 20/25 HP car radiators. | 10th Jan 1933 | Box 149a \ 2 scan0107 | |
| Arranging the return of two 20/25 HP car radiators to John Marston Ltd. for fitting with the correct tubes. | 10th Jan 1933 | Box 149a \ 2 scan0108 | |
| Despatch note for an Air Speed Indicator and Pitot Head to be sent to Messrs. Sercks. | 10th Jan 1933 | Box 149a \ 2 scan0109 | |
| Incorrectly fitted radiators from the supplier Marstons. | 13th Jan 1933 | Box 149a \ 2 scan0110 | |
| Letter from Gallay Radiator Co. Ltd. regarding blueprints for thermostatic radiator shutters and a sample thermostat. | 13th Jan 1933 | Box 149a \ 2 scan0111 | |
| Letter to Gallay Radiator Co. Ltd declining interest in thermostats for car radiator shutters. | 19th Jan 1933 | Box 149a \ 2 scan0112 | |
| Design and cost implications of different radiator types, including Chromium plated and loose shell versions. | 23th Jan 1933 | Box 149a \ 2 scan0113 | |
| Move away from Staybrite steel to chromium plating for car radiators. | 25th Jan 1933 | Box 149a \ 2 scan0114 | |
| Advising against ordering parts for a failed Peregrine Water Drain Cock design, with a new design to follow shortly. | 25th Jan 1933 | Box 149a \ 2 scan0115 | |
| Ordering and manufacturing of Harrison radiator matrix blocks for various car models. | 30th Jan 1933 | Box 149a \ 2 scan0116 | |
| Car radiators, detailing tests on copper matrix blocks and a weight breakdown of the 20/25 HP standard radiator. | 31th Jan 1933 | Box 149a \ 2 scan0117 | |
| The weight distribution and factory costs of a 20/25 HP radiator, with suggestions for cost and weight reduction. | 31th Jan 1933 | Box 149a \ 2 scan0118 | |
| Review of radiator construction focusing on weight and cost reduction for the Phantom II and Peregrine models. | 31th Jan 1933 | Box 149a \ 2 scan0119 | |
| Trial and standardisation of the Marston matrix radiator for 40/50 HP cars. | 2nd Feb 1933 | Box 149a \ 2 scan0120 | |
| Marston Matrix for the 40/50 HP Radiator and its use on Continental Phantom II models. | 6th Feb 1933 | Box 149a \ 2 scan0121 | |
| Letter to Messrs Kennings Ltd requesting the loan of a Morris radiator to examine the shutter construction. | 6th Feb 1933 | Box 149a \ 2 scan0122 | |
| Letter to John Marston Ltd. regarding modifications to 40/50HP car radiators and requesting a quotation for 20/25HP matrix blocks. | 7th Feb 1933 | Box 149a \ 2 scan0123 | |
| Modifications to a radiator tank for a Marston Matrix pump test. | 15th Feb 1933 | Box 149a \ 2 scan0124 | |
| Modifications to the 40/50 HP radiator bottom tank for the Marston Ribbon Matrix. | 16th Feb 1933 | Box 149a \ 2 scan0125 | |
| Letter to John Marston Ltd. regarding the dispatch of parts and specifications for a 40/50 HP car radiator. | 3rd Mar 1933 | Box 149a \ 2 scan0126 | |
| Instructions to send a set of radiator parts to Messrs. John Marstons Ltd. for assembly with a bonded matrix. | 6th Mar 1933 | Box 149a \ 2 scan0127 | |
| Letter from a supplier regarding an order for a Mark III Matrix, acknowledging a fitting error on a previous sample. | 6th Mar 1933 | Box 149a \ 2 scan0128 | |
| Requesting modifications for radiator matrix blocks on the 40/50 and 20/25 models. | 11th Mar 1933 | Box 149a \ 2 scan0129 | |
| Radiator matrix options and modifications for the Peregrine chassis. | 13th Mar 1933 | Box 149a \ 2 scan0130 | |
| Letter to John Marston Ltd. regarding the building and testing of 40/50 HP car radiator parts. | 18th Mar 1933 | Box 149a \ 2 scan0131 | |
| The despatch of two sets of Phantom II radiator parts to John Marston Ltd. for assembly with a Harrison matrix. | 18th Mar 1933 | Box 149a \ 2 scan0132 | |
| Testing requirements for a new Marston Mark III radiator. | 22th Mar 1933 | Box 149a \ 2 scan0133 | |
| The Marston Mark III radiator matrix for the Phantom II Continental chassis. | 22th Mar 1933 | Box 149a \ 2 scan0134 | |
| Requesting information on the width of the Marston radiator matrix to be fitted on P.2 series Continental chassis. | 22th Mar 1933 | Box 149a \ 2 scan0135 | |
| New patent film block radiator from The Searle Radiator Company and an offer for experimental trials. | 22th Mar 1933 | Box 149a \ 2 scan0136 | |
| Letter from John Marston Limited regarding the unsuitability of previously ordered radiator cores. | 22th Mar 1933 | Box 149a \ 2 scan0137 | |
| Letter from John Marston Limited discussing the comparative testing of water outlets. | 22th Mar 1933 | Box 149a \ 2 scan0138 | |
| Letter to John Marston Ltd regarding the urgent dispatch of radiator parts and an accompanying blueprint. | 3rd Apr 1933 | Box 149a \ 2 scan0139 | |
| Two sets of Bensport Radiator parts to be sent to Messrs. John Marston Ltd for modification. | 3rd Apr 1933 | Box 149a \ 2 scan0140 | |
| Letter from John Marston Limited regarding the receipt of radiator parts and the despatch schedule for completed radiators. | 4th Apr 1933 | Box 149a \ 2 scan0141 | |
| Letter to John Marston Ltd acknowledging their correspondence and requesting the despatch of radiators by passenger train. | 5th Apr 1933 | Box 149a \ 2 scan0142 | |
| Letter to John Marston Ltd regarding the urgent supply of Harrison radiators. | 6th Apr 1933 | Box 149a \ 2 scan0143 | |
| Letter from John Marston Limited regarding the dispatch and construction of a car radiator. | 7th Apr 1933 | Box 149a \ 2 scan0144 | |
| Letter to John Marston Ltd. regarding a misunderstanding over an order for 40/50 car radiators. | 8th Apr 1933 | Box 149a \ 2 scan0145 | |
| Letter from a supplier about a misunderstanding regarding radiators and potential issues with heat dissipation on a new design. | 12th Apr 1933 | Box 149a \ 2 scan0146 | |
| Marston Mark III radiator matrix order and a request to issue the official purchase order post-completion. | 25th Apr 1933 | Box 149a \ 2 scan0147 | |
| Inquiry to Vauxhall Motors regarding the potential supply of Harrison Vee Bonded Core Radiator Matrix blocks. | 29th Apr 1933 | Box 149a \ 2 scan0148 | |
| Letter from Vauxhall Motors regarding the potential manufacture of a Harrison Vee Radiator Core. | 1st May 1933 | Box 149a \ 2 scan0149 | |
| Letter discussing tests on Harrison Vee Bonded Core Radiator Blocks and the difficulties in sourcing or manufacturing them. | 5th May 1933 | Box 149a \ 2 scan0150 | |
| Page two of a typed letter requesting information. | 5th May 1933 | Box 149a \ 2 scan0151 | |
| Enquiry to Harrison Radiator Corporation regarding the possibility of manufacturing their Vee bonded core radiator matrix block. | 5th May 1933 | Box 149a \ 2 scan0152 | |
| Page 2 of a letter to Harrison Radiator Corp. regarding equipment for building hexagonal tube type matrixes. | 10th May 1933 | Box 149a \ 2 scan0153 | |
| Letter from a consulting engineer regarding licensing for Harrison Vee Bonded Core Radiator Blocks. | 10th May 1933 | Box 149a \ 2 scan0154 | |
| Page 2 of a letter discussing the use of Harrison Radiator Cores and potential co-operation. | 11th May 1933 | Box 149a \ 2 scan0155 | |
| Letter discussing the potential licensing and manufacturing of Harrison Vee Bonded Core Radiator Blocks. | 11th May 1933 | Box 149a \ 2 scan0156 | |
| Urgent order of Marston Mark III radiator matrix blocks for a Bentley. | 18th May 1933 | Box 149a \ 2 scan0157 | |
| Letter from Harrison Radiator Corporation regarding a radiator inquiry and follow-up arrangements. | 6th Jun 1933 | Box 149a \ 2 scan0158 | |
| Invoice from Messrs. John Marston Ltd. for a Mark III Copper Block and requesting confirmation of receipt. | 7th Jun 1933 | Box 149a \ 2 scan0159 | |
| Request to book in a Mark III Radiator Block that was collected. | 8th Jun 1933 | Box 149a \ 2 scan0160 | |
| Letter from a consulting engineer regarding delays and communications about Harrison Vee Bonded Core Radiator Blocks. | 24th Jun 1933 | Box 149a \ 2 scan0161 | |
| Letter discussing licensing for radiator core production and related plant costs. | 24th Jun 1933 | Box 149a \ 2 scan0162 | |
| Letter discussing a plant visit to Luton and the potential cost of a manufacturing license. | 4th Jul 1933 | Box 149a \ 2 scan0163 | |
| Letter to John Marston Ltd. regarding dimensional inconsistencies and fitting issues with the supplied Mark III type matrix for 40/50 HP and Bentley cars. | 4th Jul 1933 | Box 149a \ 2 scan0164 | |
| Querying a debit from Serck Radiators Ltd for repairs to a Hawker Radiator. | 4th Jul 1933 | Box 149a \ 2 scan0165 | |
| Letter to John Marston Ltd. regarding a potential visit to discuss difficulties with the Mark III matrix. | 8th Jul 1933 | Box 149a \ 2 scan0166 | |
| Letter from John Marston Limited regarding arrangements for personnel during a visit. | 10th Jul 1933 | Box 149a \ 2 scan0167 | |
| Agreed actions with Marston to resolve dimensional issues with 40/50 car radiator matrices. | 12th Jul 1933 | Box 149a \ 2 scan0168 | |
| Letter from John Marston Limited regarding the manufacturing schedule and supply of radiator blocks. | 14th Jul 1933 | Box 149a \ 2 scan0169 | |
| Letter to supplier John Marston Limited regarding the supply of radiator matrix blocks and inter-departmental communication. | 17th Jul 1933 | Box 149a \ 2 scan0170 | |
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