| Description | Date | Identifier | |
| Passing on correspondence and four samples of AMAL Bonnet Fasteners for inspection. | 21th Sep 1932 | Box 25 \ 1 Scan133 | |
| Quotation letter from AMAL Ltd. regarding a sample of an Amal bonnet fastener. | 14th Sep 1932 | Box 25 \ 1 Scan134 | |
| Quotation from AMAL Ltd. for standard bonnet fasteners complete with bottom bracket. | 8th Sep 1932 | Box 25 \ 1 Scan135 | |
| Letter to Messrs. Amal Limited requesting a sample and price for a new bonnet fastener. | 7th Sep 1932 | Box 25 \ 1 Scan136 | |
| The procurement of a sample Amal bonnet fastener and the return of an original letter. | 7th Sep 1932 | Box 25 \ 1 Scan137 | |
| Letter from AMAL Ltd. introducing their new Amal Bonnet Fastener. | 30th Aug 1932 | Box 25 \ 1 Scan138 | |
| Standardisation and cost of bought-out bonnet fasteners. | 5th Oct 1932 | Box 25 \ 1 Scan139 | |
| Request to order three sets of Remax bonnet fasteners for the Peregrine project. | 17th Jan 1933 | Box 25 \ 1 Scan140 | |
| Paint damage observed on the bonnets of Phantom II and 25-HP models. | 22th Feb 1933 | Box 25 \ 1 Scan141 | |
| Decision to delete buttons on the Phantom II and 25 HP chassis near the bonnet hinges. | 23th Feb 1933 | Box 25 \ 1 Scan142 | |
| Confirming the standard use of Remax bonnet fasteners on Peregrine and Bentley cars. | 22th Feb 1933 | Box 25 \ 1 Scan143 | |
| Requesting design particulars for the 40/50 HP bonnet panel stops linkage. | 5th May 1933 | Box 25 \ 1 Scan144 | |
| Design and features of a proposed bonnet fastener. | 23th May 1933 | Box 25 \ 1 Scan145 | |
| Scheme for bonnet stops and the attachment of controlling linkages. | 25th May 1933 | Box 25 \ 1 Scan146 | |
| Expressing disappointment at the lack of urgency on a bonnet scheme and noting criticisms about paint damage. | 26th May 1933 | Box 25 \ 1 Scan147 | |
| Replying to a query about bonnet stops, advising that instructions for an experimental set will be issued soon. | 27th May 1933 | Box 25 \ 1 Scan148 | |
| Follow-up memo regarding the status of instructions for an experimental set of bonnet-stops. | 14th Jun 1933 | Box 25 \ 1 Scan149 | |
| Request to urgently create an experimental set of bonnet stops for the Phantom II. | 16th Jun 1933 | Box 25 \ 1 Scan150 | |
| Telegram requesting an investigation into the position of bonnet stops. | 24th Jun 1926 | Box 25 \ 1 Scan151 | |
| Reverting to an older type of bonnet stop to prevent paintwork damage. | 1st Jul 1933 | Box 25 \ 1 Scan152 | |
| Reverting to the fitting of bonnet stops on the Phantom II and producing new parts for trial. | 3rd Jul 1933 | Box 25 \ 1 Scan153 | |
| Proposed design for bonnet panel stops for the 40/50 HP model. | 20th Jul 1933 | Box 25 \ 1 Scan154 | |
| Approval and implementation of new bonnet panel stops for 40/50 HP and 20/25 HP models. | 27th Jul 1933 | Box 25 \ 1 Scan155 | |
| Query regarding the cost and applicability of a modification to a 40/50 HP bonnet panel stop. | 30th Aug 1933 | Box 25 \ 1 Scan156 | |
| Follow-up request for information concerning 40/50 HP Bonnet Panel stops. | 15th Sep 1933 | Box 25 \ 1 Scan157 | |
| Explaining a delay in designing the 40/50 HP. Bonnet Panel Stops due to design challenges and other urgent work. | 25th Sep 1933 | Box 25 \ 1 Scan158 | |
| The failure of an aluminium bonnet fastener bracket on a Bentley and a request for its correction. | 12th Oct 1933 | Box 25 \ 1 Scan159 | |
| Follow-up communication regarding the development status of bonnet panel stops for 40/50 HP cars. | 26th Oct 1933 | Box 25 \ 1 Scan160 | |
| Improved design for Phantom Bonnet Stops, changing from aluminium to steel. | 30th Oct 1933 | Box 25 \ 1 Scan161 | |
| Query regarding the supply of improved bonnet stops for Phantom II trials cars. | 9th Nov 1933 | Box 25 \ 1 Scan162 | |
| The extra material and labour cost for fitting P.2. Bonnet Stops to a chassis. | 7th Nov 1933 | Box 25 \ 1 Scan163 | |
| Improved steel bonnet stop design for the Phantom II. | 2nd Nov 1933 | Box 25 \ 1 Scan164 | |
| Unsatisfactory points regarding the Phantom II Bonnet Stops. | 13th Nov 1933 | Box 25 \ 1 Scan165 | |
| Inquiring which trials car a new P2 Bonnet Stop scheme should be fitted to. | 22th Nov 1933 | Box 25 \ 1 Scan166 | |
| Schedule for fitting new bonnet stops to a Phantom II Trials Car. | 23th Nov 1933 | Box 25 \ 1 Scan167 | |
| Requesting a fitter be sent to Park Ward's Works to fit bonnet stops to car 20-MY. | 27th Nov 1933 | Box 25 \ 1 Scan168 | |
| Confirming a fitter is being sent to Park Ward's works at Willesden regarding P.II. Bonnet Stops. | 28th Nov 1933 | Box 25 \ 1 Scan169 | |
| The fitting and finishing of new bonnet stops on 40/50 HP chassis. | 5th Dec 1933 | Box 25 \ 1 Scan170 | |
| Standardisation of parts for bonnet stops. | 6th Dec 1933 | Box 25 \ 1 Scan171 | |
| Article from 'The Motor' magazine explaining the principle, operation, and components of the Houdaille Hydraulic Suspension system. | 3rd Feb 1914 | Box 25 \ 2 Scan001 | |
| Instruction sheet for an alteration to hydraulic shock absorbers and the addition of related parts. | 5th Feb 1914 | Box 25 \ 2 Scan002 | |
| Instruction to postpone the ordering of hydraulic shock absorbers for chassis 58 N.A. | 9th Jul 1914 | Box 25 \ 2 Scan003 | |
| Instructions to test Houdaille Absorbers and springs with extra camber on experimental chassis 58NA. | 16th Feb 1914 | Box 25 \ 2 Scan004 | |
| Extract from a letter by Mr. Ionides discussing a methodology for testing suspension improvements. | 25th Feb 1914 | Box 25 \ 2 Scan005 | |
| Fitting of Houdaille shock absorbers, with an urgent memo from 'C.S.' to use them on trial cars. | 5th Mar 1914 | Box 25 \ 2 Scan006 | |
| Instruction sheet for an alteration concerning hydraulic shock absorbers and fuel tank fitting. | 5th Mar 1914 | Box 25 \ 2 Scan007 | |
| The ordering and fitting of Houdaille shock absorbers for the London Trials Car. | 12th Mar 1914 | Box 25 \ 2 Scan008 | |
| Standardization of one-way hydraulic shock absorbers for the rear of the car. | 18th Mar 1914 | Box 25 \ 2 Scan009 | |
| Letter detailing changes made to the latest types of Houdaille Suspensions. | 25th Mar 1914 | Box 25 \ 2 Scan010 | |
| Page two of a letter from The Houdaille Hydraulic Suspension Company detailing a design change to their suspension system. | 12th Mar 1914 | Box 25 \ 2 Scan011 | |
| Attached letter from Houdaille Shock Absorber people and a revised section of their absorber. | 26th Mar 1914 | Box 25 \ 2 Scan012 | |
| Instructions for fitting Houdaille rear shock absorbers to car 1926, noting the total weight of the parts. | 30th Mar 1914 | Box 25 \ 2 Scan013 | |
| Internal routing slip memo regarding the return of a letter concerning Houdaille Shock Absorbers. | 31th Mar 1914 | Box 25 \ 2 Scan014 | |
| Instruction to fit a pair of Houdaille rear shock absorbers to a chassis for a bumping test. | 3rd Apr 1914 | Box 25 \ 2 Scan015 | |
| Customer's inquiry about Houdaille Shock Absorbers. | 2nd Apr 1914 | Box 25 \ 2 Scan016 | |
| Internal inquiry regarding the recommendation of Houdaille Shock Absorbers for a customer. | 27th Apr 1914 | Box 25 \ 2 Scan017 | |
| Testing of Houdaille Shock Absorbers in the Experimental Department. | 28th Apr 1914 | Box 25 \ 2 Scan018 | |
| Requesting an opinion on Houdaille shock absorbers due to numerous enquiries. | 1st May 1914 | Box 25 \ 2 Scan019 | |
| Clarifying which type of hydraulic shock absorbers, Houdaille or R.R., should be fitted to chassis 58NA. | 1st May 1914 | Box 25 \ 2 Scan020 | |
| Note regarding experiments on rear Houdaille shock absorbers. | 26th May 1914 | Box 25 \ 2 Scan021 | |
| Note detailing the fitting of Houdaille hydraulic shack absorbers to the rear springs of chassis 58 NA. | 26th May 1914 | Box 25 \ 2 Scan022 | |
| Instruction note regarding an alteration to 'HOUDAILLE' shock absorber fittings and associated drawings. | 6th Jun 1914 | Box 25 \ 2 Scan023 | |
| The status of experiments with Houdaille shock absorbers for a customer's car. | 30th Jun 1913 | Box 25 \ 2 Scan024 | |
| Suitability of fitting Houdaïlle Shock Absorbers. | 17th Jun 1914 | Box 25 \ 2 Scan025 | |
| Virtues of a component for high-speed touring and racing cars, contrasting with its use on a town car. | 18th Jun 1914 | Box 25 \ 2 Scan026 | |
| Containing Mr. Haldenby's report on experiments with Houdaille shock absorbers. | 18th Jun 1914 | Box 25 \ 2 Scan027 | |
| To the Experimental Dept. requesting a report on the performance of Houdaille Shock Absorbers for Mr. Silvertop. | 23th Jun 1914 | Box 25 \ 2 Scan028 | |
| Explaining the company's position on Houdaille Shock Absorbers. | 24th Jun 1914 | Box 25 \ 2 Scan029 | |
| The design of the springing system on modern chassis compared to earlier models without shock absorbers. | 27th Jun 1914 | Box 25 \ 2 Scan030 | |
| Houdaille Shock Absorbers and the forwarding of a report on them. | 27th Jun 1914 | Box 25 \ 2 Scan031 | |
| Extract from Warwick's report on vehicle 58NA, regarding rear springing after a 3080-mile run. | 29th Jun 1914 | Box 25 \ 2 Scan032 | |
| The failure and removal of Houdaille Shock Absorbers from chassis 58NA. | 10th Jul 1914 | Box 25 \ 2 Scan033 | |
| Cancelling experiments on Houdaille Shock Absorbers based on a finding from Mr Royce. | 11th Aug 1914 | Box 25 \ 2 Scan034 | |
| Lever for Houdaille Shock Absorbers and the cancellation of an associated experiment. | 14th Aug 1914 | Box 25 \ 2 Scan035 | |
| Proposal from Mr. Colin Defries to test a set of shock absorbers. | 25th Apr 1921 | Box 25 \ 2 Scan036 | |
| Correspondence on a Houdaille shock-absorber and whether it should be tested. | 26th Apr 1921 | Box 25 \ 2 Scan037 | |
| Cover note attaching a further letter from Mr. Defries regarding Houdaille Shock absorbers. | 27th Apr 1921 | Box 25 \ 2 Scan038 | |
| Tests and fitting issues with the Houdaille Shock Absorber. | 28th Apr 1921 | Box 25 \ 2 Scan039 | |
| Requesting Mr. Royce's feedback on Houdaille shock absorbers. | 14th May 1921 | Box 25 \ 2 Scan040 | |
| Drawing of Houdaille shock absorbers for potential fitting to an experimental car. | 19th May 1921 | Box 25 \ 2 Scan041 | |
| Letter from The Houdaille Hydraulic Suspension Co. Ltd. to Mr. Hives regarding hydraulic suspensions and trade terms. | 28th May 1921 | Box 25 \ 2 Scan042 | |
| Letter discussing a suspension type for the chassis, proposing tests and enclosing blueprints from Wolseley. | 28th May 1921 | Box 25 \ 2 Scan043 | |
| Page 2 of a letter from D. C. Defries regarding Houdaille hydraulic suspensions. | 22th Apr 1921 | Box 25 \ 2 Scan044 | |
| Copy of a customer testimonial letter regarding a new suspension system. | 22th Apr 1921 | Box 25 \ 2 Scan045 | |
| Letter concerning Houdaille Shock Absorbers, directing the recipient to the sole concessionaire for a sample. | 20th May 1921 | Box 25 \ 2 Scan046 | |
| Article reprinted from The Autocar discussing an extended experience of Houdaille shock absorbers, also known as spring checks. | 24th Jun 1916 | Box 25 \ 2 Scan047 | |
| Reprint of a 'Daily Mail' article reporting on a prolonged test of Houdaille hydraulic shock and recoil absorbers by Mr. John Prioleau. | 12th Oct 1920 | Box 25 \ 2 Scan048 | |
| Letter to Colonel D.C. Defries requesting drawings for the Houdaille Shock Absorber. | 27th May 1921 | Box 25 \ 2 Scan049 | |
| Letter from D. C. Defries requesting the return of a Wolseley Blue Print for reference purposes. | 2nd Jun 1921 | Box 25 \ 2 Scan050 | |
| Letter regarding the return of blueprints and difficulties fitting Houdaille Shock Absorbers to a 40/50 car. | 6th Jun 1921 | Box 25 \ 2 Scan051 | |
| Letter from the sole concessionaire for Houdaille Hydraulic Suspensions regarding the testing of a set. | 7th Jun 1921 | Box 25 \ 2 Scan052 | |
| Letter from the sole concessionaire for Houdaille Hydraulic Suspensions regarding fitting the product to a Rolls-Royce car. | 9th Jun 1921 | Box 25 \ 2 Scan053 | |
| Letter from the sole concessionaire of Houdaille Hydraulic Suspensions regarding testing and improvements to the product. | 25th Nov 1921 | Box 25 \ 2 Scan054 | |
| Design, performance, and materials for various types of shock dampers. | 29th Dec 1921 | Box 25 \ 2 Scan055 | |
| The difficulty of fitting standard Houdaille shock absorbers to the 40/50 chassis and a request for a solution from the manufacturer. | 2nd Jun 1922 | Box 25 \ 2 Scan056 | |
| Letter from Houdaille Hydraulic Suspension Co Ltd regarding the testing and fitting of their suspension systems. | 25th Jul 1922 | Box 25 \ 2 Scan057 | |
| Letter from a suspension company comparing their hydraulic system to a friction type and offering a set for testing. | 26th Jul 1922 | Box 25 \ 2 Scan058 | |
| Letter concerning the fitting of Houdaille shock absorbers to a 40/50 HP chassis. | 26th Jul 1922 | Box 25 \ 2 Scan059 | |
| Letter requesting a set of four shock absorbers for testing on an experimental 40/50 HP chassis. | 28th Jul 1922 | Box 25 \ 2 Scan060 | |
| Letter from The Houdaille Hydraulic Suspension Co Ltd regarding testing their suspensions on a chassis. | 28th Jul 1922 | Box 25 \ 2 Scan061 | |
| | | | |