| Description | Date | Identifier | |
| To Mr. Hancock regarding arrangements for supervising a job on Mr. Gowen's car. | 30th Nov 1936 | Box 106 \ 5 scan0200 | |
| Modifications to the Bentley's steering system to make it lighter. | 17th Nov 1936 | Box 106 \ 5 scan0201 | |
| Steering modifications on Mr. Gowen's Bentley. | 19th Nov 1936 | Box 106 \ 5 scan0202 | |
| Steering control rattles on the Wraith model. | 11th Oct 1938 | Box 106 \ 5 scan0203 | |
| Squeaking springs on Chassis GVO-20 due to improper assembly and lubrication discovered during a customer trial run. | 3rd Dec 1929 | Box 107 \ 1 scan0001 | |
| Questioning the proposal to fit a low-inertia slipper-drive device to a smaller chassis. | 24th Jan 1930 | Box 107 \ 1 scan0002 | |
| Modifications to a car and the future use of its chassis and body for experimental or demonstration purposes. | 23th May 1930 | Box 107 \ 1 scan0003 | |
| Fitting new modified wing and headlamp brackets to a 25 HP car. | 30th May 1930 | Box 107 \ 1 scan0004 | |
| Inquiring about the schedule for sending a car with modified parts to London for Sales inspection. | 11th Jun 1930 | Box 107 \ 1 scan0005 | |
| 20/25 HP chassis fitted with Phantom II type head-lamp brackets sent for approval. | 23th Jun 1930 | Box 107 \ 1 scan0006 | |
| List of required modifications and fault rectifications for vehicle GLN-60. | 23th Jun 1930 | Box 107 \ 1 scan0007 | |
| Request to use a 20 HP car to road test a spare engine fitted with a Nitralloy crankshaft and special alloy bearings. | 23th Jun 1930 | Box 107 \ 1 scan0008 | |
| Arranging for an Aviation Car to be sent for experimental work. | 24th Jun 1930 | Box 107 \ 1 scan0009 | |
| The examination of a car, noting issues with the headlamp brackets and wing stays on a 20 HP model. | 24th Jun 1930 | Box 107 \ 1 scan0010 | |
| Enquiring if experimental chassis 14-G-4 can be released to the Repair Department after inspection. | 25th Jun 1930 | Box 107 \ 1 scan0011 | |
| Private memo about the readiness of a demonstration car with an improved chassis and the secrecy required. | 26th Jun 1930 | Box 107 \ 1 scan0012 | |
| Second set of modified silent tread tyres sent for an opinion, and new moulds being made by Dunlop. | 26th Jun 1930 | Box 107 \ 1 scan0013 | |
| Sales strategy for a potential customer involving a new 'China' chassis and a part-exchanged vehicle. | 27th Jun 1930 | Box 107 \ 1 scan0014 | |
| Trials car GXO-15, its 20/25 HP modifications, and a complaint about a non-standard steering wheel. | 2nd Jul 1930 | Box 107 \ 1 scan0015 | |
| Internal correspondence regarding a customer test drive and the availability of older versus newer chassis types. | 27th Jun 1930 | Box 107 \ 1 scan0016 | |
| The performance of chassis GGP-53 in South Africa, including feedback on suspension and fuel economy. | 4th Jul 1930 | Box 107 \ 1 scan0017 | |
| The standardization and fitting of modified headlamp brackets to chassis 14-G4. | 8th Jul 1930 | Box 107 \ 1 scan0018 | |
| Removal of experimental parts from chassis GLN-60 before its sale. | 15th Jul 1930 | Box 107 \ 1 scan0019 | |
| Requesting the release of chassis 14-G4 from the Experimental Department for sales purposes. | 18th Jul 1930 | Box 107 \ 1 scan0020 | |
| Brief typed memo concerning the urgent sale of car GLN-60. | 18th Jul 1930 | Box 107 \ 1 scan0021 | |
| Modifications made to car GLN-60 for experimental parts testing and arguing against its sale. | 18th Jul 1930 | Box 107 \ 1 scan0022 | |
| Typed letter concerning an attempt to borrow a Packard and a Chrysler for two days. | 19th Jul 1930 | Box 107 \ 1 scan0023 | |
| Withdrawing instructions to dispose of a car due to ongoing experimental work. | 21th Jul 1930 | Box 107 \ 1 scan0024 | |
| Short memo arranging a car trial in London for a 20/25 GXO.15 model. | 21th Jul 1930 | Box 107 \ 1 scan0025 | |
| Performance comparison report of a modified 20/25 HP trials touring car against an older model, noting improvements and outstanding faults. | 22th Jul 1930 | Box 107 \ 1 scan0026 | |
| Exhaust noise, fuel consumption, and testing on a 20/25 HP coupe. | 22th Jul 1930 | Box 107 \ 1 scan0027 | |
| Modified lamp brackets for car 14-G4 and its subsequent handover to the Repair Department. | 22th Jul 1930 | Box 107 \ 1 scan0028 | |
| Inquiry about engine work on a car and its effect on horsepower rating for duty purposes. | 1st Sep 1930 | Box 107 \ 1 scan0029 | |
| Confirming the dimensions of the Aero Department car GLN-60 match the Standard 20/25 HP model. | 2nd Sep 1930 | Box 107 \ 1 scan0030 | |
| Letter discussing sample 'cheap bodied' 20/25-HP Enclosed Limousines from various coachbuilders. | 17th Oct 1930 | Box 107 \ 1 scan0031 | |
| Merits of Maythorne coachbuilders for a prospective customer. | 20th Oct 1930 | Box 107 \ 1 scan0032 | |
| The movement of a car from Cricklewood to Derby. | 11th Nov 1930 | Box 107 \ 1 scan0033 | |
| Arrangements for a 20 HP Trials Car for customer demonstrations. | 11th Nov 1930 | Box 107 \ 1 scan0034 | |
| Instructions for a car to be left at Maythorns in Biggleswade for modifications to the instrument board and horn bulb. | 14th Nov 1930 | Box 107 \ 1 scan0035 | |
| Customer changing a car order and providing feedback on the appearance of the GSR-11 model. | 18th Nov 1930 | Box 107 \ 1 scan0036 | |
| Inquiry regarding the presence of experimental parts on car GLN-60 prior to its potential sale. | 21th Nov 1930 | Box 107 \ 1 scan0037 | |
| Experimental engine components of car GLN-60. | 22th Nov 1930 | Box 107 \ 1 scan0038 | |
| Query regarding experimental parts in car GLN-60's engine and the original engine's whereabouts. | 26th Nov 1930 | Box 107 \ 1 scan0039 | |
| Chasing a reply regarding Aero Department car GLN-60. | 3rd Dec 1930 | Box 107 \ 1 scan0040 | |
| The experimental parts fitted to an engine for a GLN-60 chassis. | 5th Dec 1930 | Box 107 \ 1 scan0041 | |
| Fitting an original engine back into chassis GLN-60 for its sale, and the completion of its coachwork. | 9th Dec 1930 | Box 107 \ 1 scan0042 | |
| Sending an original unit to the Repair Dept. to replace an experimental one fitted to car GLN-60. | 12th Dec 1930 | Box 107 \ 1 scan0043 | |
| Request from Sales to fit an original unit into GLN-60 and send it to the Repair Department. | 2nd Dec 1930 | Box 107 \ 1 scan0044 | |
| Use of car GLN-60 to demonstrate improvements in booming and to gain mileage on experimental features. | 18th Dec 1930 | Box 107 \ 1 scan0045 | |
| 'booming' issue, giving no objection to a fitting on vehicle GLN-60. | 23th Dec 1930 | Box 107 \ 1 scan0046 | |
| Letter discussing criticisms of the coachwork and wipers on the GLR-31 Propaganda Car. | 30th Dec 1930 | Box 107 \ 1 scan0047 | |
| Faults on the GLR-31 Propaganda Car, including water leaks and issues with Lucas windscreen wipers. | 9th Jan 1931 | Box 107 \ 1 scan0048 | |
| Suspension work, requesting a 25 HP Trials car to test new, lower-rating springs. | 17th Jan 1931 | Box 107 \ 1 scan0049 | |
| Requesting a change of unit for car GLN-60. | 28th Jan 1931 | Box 107 \ 1 scan0050 | |
| Instructing the change of units between cars 12.G.IV and G.L.N.60, with details on required maintenance. | 2nd Feb 1930 | Box 107 \ 1 scan0051 | |
| Car G.L.N.-60, requesting a large diameter propeller shaft be fitted. | 7th Feb 1931 | Box 107 \ 1 scan0052 | |
| Request to line the servo of car GLN. 60 with cotton duck. | 13th Feb 1931 | Box 107 \ 1 scan0053 | |
| Internal order instructing Messrs. Sanderson & Holmes to carry out work on chassis GLN-60 as per an attached estimate. | 3rd Mar 1931 | Box 107 \ 1 scan0054 | |
| Specifications for springing, damper loads, unladen car weight, and buffer clearances. | 7th Mar 1931 | Box 107 \ 1 scan0055 | |
| 'consistently bad boomer' car from the Maythorn Trials, chassis GNS-2, being sent for urgent investigation. | 2nd Apr 1931 | Box 107 \ 1 scan0056 | |
| Unbearable 'boom' sound in a 25 HP car, its cause, and potential solutions involving coachbuilders. | 10th Apr 1931 | Box 107 \ 1 scan0057 | |
| Requesting a car be returned to replace its overstressed low rating springs with the correct ones. | 10th Apr 1931 | Box 107 \ 1 scan0058 | |
| Proposing to send springs to location 'N' to reduce time and cost. | 13th Apr 1931 | Box 107 \ 1 scan0059 | |
| Confirming the despatch of two road springs to Cricklewood for immediate fitting. | 17th Apr 1931 | Box 107 \ 1 scan0060 | |
| New rating for springs on four 25 HP demonstration cars. | 28th Apr 1931 | Box 107 \ 1 scan0061 | |
| Fitting of low rating springs and shock absorbers for a 20/25 HP model. | 18th May 1931 | Box 107 \ 1 scan0062 | |
| Specification sheet for front and rear springs, damper loads, and buffer clearances. | 7th Mar 1931 | Box 107 \ 1 scan0063 | |
| Allocation of a 20/25 car, GLR-81, with a metal panelled Weymann limousine body for experimental purposes. | 18th May 1931 | Box 107 \ 1 scan0064 | |
| Specification changes for tests in France, including work on car GNS-2 and a modification list for model 25-EX. | 19th May 1931 | Box 107 \ 1 scan0065 | |
| Removal and return of parts from a 25 HP experimental test car. | 19th May 1931 | Box 107 \ 1 scan0066 | |
| Request for a comparative test on the high-speed engine smoothness of a 25 HP car fitted with an experimental roller tail bearing. | 30th May 1931 | Box 107 \ 1 scan0067 | |
| Recommending the elimination of transmission vibration in future production based on a high-speed test at Brooklands. | 4th Jun 1931 | Box 107 \ 1 scan0068 | |
| Clarifying the status and use of cars GNS-5 and GNS-2 for trials and demonstration work. | 7th Jun 1931 | Box 107 \ 1 scan0069 | |
| Modification for the front shock absorbers on 20/25 HP models following feedback. | 11th Jun 1931 | Box 107 \ 1 scan0070 | |
| Delay of the Maythorne saloon and plans to fit it with a new tail bearing for trials. | 7th Jul 1931 | Box 107 \ 1 scan0071 | |
| Telegram confirming the evening arrival of 'Maythorn'. | 31th Dec 1931 | Box 107 \ 1 scan0072 | |
| Delayed arrival of the GSN-5 Maythorn trial car and a proposed tail-bearing modification. | 2nd Jul 1931 | Box 107 \ 1 scan0073 | |
| Engine roughness and steering column movement in Trials Car GSR-14. | 3rd Jul 1931 | Box 107 \ 1 scan0074 | |
| Chasing the progress of modifications to a 20/25 HP car, chassis GLR-81, which has been delayed. | 7th Jul 1931 | Box 107 \ 1 scan0075 | |
| The delay and completion status of car GLR-81, specifically concerning a radiator modification. | 8th Jul 1931 | Box 107 \ 1 scan0076 | |
| Engine and exhaust modifications for car GLN-60. | 14th Jul 1931 | Box 107 \ 1 scan0077 | |
| Requesting engine component checks and a power curve test for a 25 HP model before submission to Sales. | 20th Jul 1931 | Box 107 \ 1 scan0078 | |
| Modifications and repairs to an engine, highlighting worn main bearings and cylinders, with urgency due to the Schneider Cup. | 21th Jul 1931 | Box 107 \ 1 scan0079 | |
| Repeated exhaust failures on GXO-69 and the proposed modifications to resolve the issue. | 22th Jul 1931 | Box 107 \ 1 scan0080 | |
| Confidential memo regarding the temporary installation of a condemned engine with a cast iron crankcase. | 24th Jul 1931 | Box 107 \ 1 scan0081 | |
| Complaint about the springing and ride comfort of car GLR-39. | 29th Sep 1931 | Box 107 \ 1 scan0082 | |
| Replying that a report is not sufficiently clear to make recommendations. | 30th Sep 1931 | Box 107 \ 1 scan0083 | |
| Letter discussing a very high compression ratio test, potential valve distortion, and ignition control. | 4th Oct 1931 | Box 107 \ 1 scan0084 | |
| Requesting the use of car 19-GIV and arranging a meeting at Conduit St. | 11th Nov 1931 | Box 107 \ 1 scan0085 | |
| The urgent requirement to fit a camouflaging plate to the radiator of car 19-G4. | 4th Nov 1931 | Box 107 \ 1 scan0086 | |
| Returning one car and collecting another, chassis number 19-G4. | 9th Nov 1931 | Box 107 \ 1 scan0087 | |
| Supplying and fitting special shock absorbers to chassis GXO-105 to resolve knocking issues. | 18th Nov 1931 | Box 107 \ 1 scan0088 | |
| From Hs. to Cx. regarding the unavailability of a car due to further testing in France. | 9th Jan 1932 | Box 107 \ 1 scan0089 | |
| Use of car 18-G4 as a temporary demonstrator until a new chassis is available. | 11th Jan 1932 | Box 107 \ 1 scan0090 | |
| Suitability of car 18-G4 for trials and suggesting alternatives. | 12th Jan 1932 | Box 107 \ 1 scan0091 | |
| Inquiry regarding the differences between chassis models 18-G4 and 20-G4. | 13th Jan 1932 | Box 107 \ 1 scan0092 | |
| Clarifying the difference between the 18-G4 and 20-G4 chassis. | 16th Jan 1932 | Box 107 \ 1 scan0093 | |
| From Lp to Hs regarding the 5000-mile status of the engine in car GLN-60. | 23th Jan 1932 | Box 107 \ 1 scan0094 | |
| Instruction to Messrs. Sanderson & Holmes to carry out work on car GLN-60 as per an attached estimate. | 29th Jan 1932 | Box 107 \ 1 scan0095 | |
| Various performance issues and faults with a car after 6,000 miles. | 5th Feb 1932 | Box 107 \ 1 scan0096 | |
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