| Description | Date | Identifier | |
| Installation instructions for front Lovejoy hydraulic shock absorbers. | 3rd Mar 1925 | Box 28 \ 1 Scan061 | |
| Installation instructions for front Lovejoy hydraulic shock absorbers. | 3rd Mar 1925 | Box 28 \ 1 Scan062 | |
| Installation instructions for rear Lovejoy hydraulic shock absorbers. | 2nd Jan 1924 | Box 28 \ 1 Scan063 | |
| Instructions for determining the correct arm position and attaching straps for Lovejoy hydraulic shock absorbers. | 20th Feb 1924 | Box 28 \ 1 Scan064 | |
| Installation notes from the Lovejoy Manufacturing Company for front and rear absorbers. | 20th Feb 1924 | Box 28 \ 1 Scan065 | |
| Letter to Maco Template Co. Ltd. rejecting a proposed shock absorber device after reviewing the blueprints. | 4th Mar 1926 | Box 28 \ 1 Scan066 | |
| Potential suspension improvements, referencing springs with stiffer centers and a proprietary 'S & S' shock absorber. | 13th Apr 1926 | Box 28 \ 1 Scan067 | |
| Critiquing the 'S & S' Shock Absorber design, highlighting risks of overstressing springs and instability at high speeds. | 24th Mar 1925 | Box 28 \ 1 Scan068 | |
| Demonstration and assessment of the S. & S. Shock Absorber device. | 20th Mar 1925 | Box 28 \ 1 Scan069 | |
| 'S & S' shock absorber after a film demonstration and considering its potential for testing. | 24th Mar 1925 | Box 28 \ 1 Scan070 | |
| Promotional leaflet and retail price list for S. and S. Shock Absorbers of Canada, Limited. | 24th Mar 1925 | Box 28 \ 1 Scan071 | |
| Promotional leaflet explaining the function and application of S & S shock absorbers for various car makes. | 4th Apr 1926 | Box 28 \ 1 Scan072 | |
| Advantages and disadvantages of a suspension device and spring modifications. | 4th Apr 1926 | Box 28 \ 1 Scan073 | |
| The testing and theory of Lovejoy shock absorbers. | 30th Apr 1928 | Box 28 \ 1 Scan074 | |
| Shock absorber testing, comparing different settings and types. | 30th Apr 1926 | Box 28 \ 1 Scan075 | |
| Particulars of a car, including spring deflection, tire inflation, and body type. | 30th Apr 1928 | Box 28 \ 1 Scan076 | |
| Index for a report on vibration-damping and shock-absorbing devices. | 22th Jun 1926 | Box 28 \ 1 Scan077 | |
| Introductory document on vibration damping and shock absorbing devices. | 22th Jun 1926 | Box 28 \ 1 Scan078 | |
| Variable rating suspension devices, detailing the issues with leaf springs and the adoption of auxiliary coil springs. | 1st Jan 1926 | Box 28 \ 1 Scan079 | |
| Report page discussing the function and failings of auxiliary spring devices, comparing proprietary examples. | 22th Jun 1926 | Box 28 \ 1 Scan080 | |
| Devices for increasing road spring rating and longitudinal pitching at speed, with an illustration of a 'NEVAJAH' auxiliary spring. | 22th Jun 1926 | Box 28 \ 1 Scan081 | |
| Suspension damping, leaf springs, and mechanical friction dampers, including the Hartford damper. | 22th Jun 1925 | Box 28 \ 1 Scan082 | |
| Analysis of 'Hartford' type shock dampers and the development of single-acting variable load dampers. | 22th Jun 1926 | Box 28 \ 1 Scan083 | |
| Page describing and comparing friction-based shock dampers, such as the 'Hartford' and 'Gabriel Snubber' types. | 22th Jun 1926 | Box 28 \ 1 Scan084 | |
| Page detailing the principles governing the flow of viscous liquid through an orifice in hydraulic shock dampers. | 22th Jun 1926 | Box 28 \ 1 Scan085 | |
| The principles of hydraulic shock dampers, focusing on the 'Houdaille' type and the role of oil viscosity. | 22th Jun 1926 | Box 28 \ 1 Scan086 | |
| The viscosity of 'Price's Motorine C' oil and its impact on the performance of Houdaille shock absorbers. | 22th Jun 1926 | Box 28 \ 1 Scan087 | |
| Explanation of a shock damper mechanism with a sectional diagram and parts key. | 22th Jun 1926 | Box 28 \ 1 Scan088 | |
| Page describing the Lovejoy damper, including a cutaway diagram. | 22th Jun 1926 | Box 28 \ 1 Scan089 | |
| Comparison of shock absorber designs, outlining the advantages and disadvantages, and introducing the 'R.R. damper'. | 22th Jun 1926 | Box 28 \ 1 Scan090 | |
| Description of the operation of a hydraulic piston mechanism, likely for a suspension damper. | 22th Jun 1926 | Box 28 \ 1 Scan091 | |
| Page discussing the principles and superiority of a damper system over friction dampers. | 22th Jun 1926 | Box 28 \ 1 Scan092 | |
| Diagram and description of the R.R. Hydraulic Damper arrangement and operation. | 22th Jun 1926 | Box 28 \ 1 Scan093 | |
| Page detailing adjustments, oil levels, and troubleshooting for a shock absorber system. | 22th Jun 1926 | Box 28 \ 1 Scan094 | |
| Troubleshooting instructions for shock dampers, including valve and filter inspection. | 22th Jun 1926 | Box 28 \ 1 Scan095 | |
| Letter from Lovejoy Manufacturing Company about appointing a new UK manufacturer for their hydraulic shock absorbers. | 27th Sep 1926 | Box 28 \ 1 Scan096 | |
| Graph showing the approximate viscosity of an oil from a 'Lovejoy' shock absorber against temperature. | 14th May 1926 | Box 28 \ 1 Scan097 | |
| Lovejoy Damping Oil. | 18th Feb 1927 | Box 28 \ 1 Scan098 | |
| Letter discussing the principles and details of a new shock absorber design from the Wire Wheel Corp. | 18th Feb 1927 | Box 28 \ 1 Scan099 | |
| Operation and testing of a hydraulic device, likely for suspension or braking systems. | 18th Feb 1927 | Box 28 \ 1 Scan100 | |
| Testing competitive shock absorbers, including Lovejoy and Houdaille, and their potential application for high-speed wobble. | 18th Feb 1927 | Box 28 \ 1 Scan101 | |
| Outlining five key design requirements for hydraulic shock dampers. | 5th Mar 1927 | Box 28 \ 1 Scan102 | |
| Shock dampers, discussing the suitability of hydraulic and Hartford types, and comparing the setup with American Springfield chassis. | 29th Apr 1927 | Box 28 \ 1 Scan103 | |
| Design possibilities and damping characteristics of Lovejoy shock dampers. | 30th May 1927 | Box 28 \ 1 Scan104 | |
| Technical memo detailing the testing and performance of Lovejoy delay-action shock absorbers. | 18th Jul 1927 | Box 28 \ 1 Scan105 | |
| Summary of test results and opinions on Lovejoy shock absorbers and their performance compared to proprietary hydraulics. | 18th Jul 1927 | Box 28 \ 1 Scan106 | |
| Blueprint drawing of a Lovejoy Delay Action Damper. | 19th Jul 1927 | Box 28 \ 1 Scan107 | |
| Reverse of a document showing a Print Room stamp from Derby. | 19th Jul 1927 | Box 28 \ 1 Scan108 | |
| Series of graphs showing performance data for the Lovejoy Shock Absorber. | 19th Jul 1927 | Box 28 \ 1 Scan109 | |
| Page from a document with mostly illegible text and a Print Room stamp. | 19th Jul 1927 | Box 28 \ 1 Scan110 | |
| Summarizing a report on Lovejoy shock absorbers and comparing them to the R.R. type. | 21th Oct 1927 | Box 28 \ 1 Scan111 | |
| Mounting of rear shock absorbers and clearance for coachwork. | 2nd Dec 1927 | Box 28 \ 1 Scan112 | |
| Letter from Rolls-Royce of America to Rolls-Royce Ltd. regarding a third-party 'TWO-WAY' shock absorber. | 2nd Dec 1927 | Box 28 \ 1 Scan113 | |
| Letter discussing laboratory reports on various oils, specifically castor oil and alcohol mixtures, for use in shock absorbers. | 11th Jan 1928 | Box 28 \ 1 Scan114 | |
| Laboratory test result sheet on the foaming properties of various oils for use in shock absorbers. | 6th Jan 1928 | Box 28 \ 1 Scan115 | |
| Laboratory test result comparing the foaming properties of various oils and mixtures. | 6th Jan 1928 | Box 28 \ 1 Scan116 | |
| Letter discussing shock absorber foaming, lubricant mixtures, and the American Houdaille. | 10th Feb 1928 | Box 28 \ 1 Scan117 | |
| Laboratory test result on the foaming of various oils for use in shock absorbers. | 6th Jan 1928 | Box 28 \ 1 Scan118 | |
| Laboratory test report on the foaming properties of various oil mixtures. | 26th Mar 1928 | Box 28 \ 1 Scan119 | |
| Causes of knocks in shock absorbers, related to lever bearing slack and the size of a low-pressure side hole. | 26th Mar 1928 | Box 28 \ 1 Scan120 | |
| Shock absorber failure, oil viscosity tests, and performance theories. | 26th Mar 1928 | Box 28 \ 1 Scan121 | |
| Hydraulic shock absorber research, production issues, and a competitor's article. | 26th Mar 1928 | Box 28 \ 1 Scan122 | |
| Rough test conducted on a damper system, including a diagram. | 26th Mar 1928 | Box 28 \ 1 Scan123 | |
| Graph comparing the viscosities of various oils at different temperatures. | 27th Mar 1928 | Box 28 \ 1 Scan124 | |
| The reverse of a document with a 'Print Room' stamp from the Derby facility. | 27th Mar 1928 | Box 28 \ 1 Scan125 | |
| Performance of hydraulic shock absorbers, specifically addressing back pressure and jerking issues. | 28th Jun 1928 | Box 28 \ 1 Scan126 | |
| Vehicle suspension conditions, including vibration, chatter, pitching, and bouncing, with corresponding shock absorber settings. | 28th Jun 1928 | Box 28 \ 1 Scan127 | |
| Adjustments to tire pressure and suspension components to improve ride quality. | 17th Jul 1928 | Box 28 \ 1 Scan128 | |
| Responding to queries on the testing of hydraulic shock absorbers. | 17th Jul 1928 | Box 28 \ 1 Scan129 | |
| Vehicle handling issues related to tyres and shock absorber settings. | 18th Jul 1928 | Box 28 \ 1 Scan130 | |
| Indicator diagrams and tests on American shock absorbers. | 18th Jul 1928 | Box 28 \ 1 Scan131 | |
| Suspension firmness in relation to American riding conditions and proposing a trial of a slotted type delay action. | 3rd Jan 1932 | Box 28 \ 1 Scan132 | |
| Comparison of standard and American rear shock absorbers using high-pressure diagrams. | 3rd Jan 1932 | Box 28 \ 1 Scan133 | |
| Blank page with a red 'PRINT ROOM' stamp from Derby. | 18th Jul 1928 | Box 28 \ 1 Scan134 | |
| Performance graphs for a Standard Damper under various stroke, pressure, and running conditions. | 18th Jul 1928 | Box 28 \ 1 Scan135 | |
| The reverse of a document showing a Print Room receipt stamp. | 18th Jul 1928 | Box 28 \ 1 Scan136 | |
| Clarifying the use of in-house designed shock absorbers versus proprietary ones from other companies. | 28th Jan 1929 | Box 28 \ 1 Scan137 | |
| Advertisement for Watson Rubber Flow Stabilators, detailing their factory, product benefits, and international distributors. | 1st May 1929 | Box 28 \ 1 Scan138 | |
| Advertisement for Watson Stabilator Rubber Flow shock absorbers, featuring the inventor John Warren Watson. | 5th Oct 1929 | Box 28 \ 1 Scan139 | |
| Inspection of a Phantom fitted with De Ram shock-absorbers and a new method of building road springs using rubber strips. | 25th May 1929 | Box 28 \ 1 Scan140 | |
| Shock absorber loadings and the maintenance of valve cap depth. | 29th Aug 1929 | Box 28 \ 1 Scan141 | |
| Manufacturing difficulties, performance, and potential improvements for shock dampers. | 5th Dec 1929 | Box 28 \ 1 Scan142 | |
| Inquiry regarding Excelsior Arford shock absorbers for a Phantom II car. | 15th Jan 1930 | Box 28 \ 1 Scan143 | |
| Different types of shock-absorbers available in France. | 22th Jan 1930 | Box 28 \ 1 Scan144 | |
| French trade directory page featuring advertisements for automotive and medical components. | 22th Jan 1930 | Box 28 \ 1 Scan145 | |
| Page from a French commercial directory listing suppliers of ammunition, chemicals, and automotive parts. | 27th Jan 1930 | Box 28 \ 1 Scan146 | |
| Inquiry to L. Poutrait in Paris regarding the supply of 'Afa' shock absorbers for a 40/50 car. | 27th Jan 1930 | Box 28 \ 1 Scan147 | |
| The fitting of Excelsior 'AFA' shock absorbers to Sir Henry Segrave's car. | 4th Mar 1930 | Box 28 \ 1 Scan148 | |
| Clearance of the Excelsior damper on the Phantom II front axle. | 11th Mar 1930 | Box 28 \ 1 Scan149 | |
| Letter concerning the ordering of Excelsior 'AFA' shock absorbers. | 13th Mar 1930 | Box 28 \ 1 Scan150 | |
| Shock absorbers for Major Segrave's car. | 21th Mar 1930 | Box 28 \ 1 Scan151 | |
| Specifications and load data for an Excelsior 'Afa' Plate Type Rear Damper. | 25th Apr 1930 | Box 28 \ 1 Scan152 | |
| Data sheet detailing the adjustment settings for Excelsior shock absorbers, correlating the number of notches to pounds of force. | 25th Apr 1930 | Box 28 \ 1 Scan153 | |
| Settings chart for Excelsior shock absorbers showing notch count to weight in lbs. | 22th May 1930 | Box 28 \ 1 Scan154 | |
| Use of auxiliary friction shock absorbers, comparing the 'Afa' model with the 'Hartford' model for standardisation. | 22th May 1930 | Box 28 \ 1 Scan155 | |
| Quoting an inquiry from The Earl of Cottenham regarding 'Afa' shock absorbers fitted to Sir Henry Segrave's car and the issue of road holding. | 2nd Jul 1930 | Box 28 \ 1 Scan156 | |
| The 'Arfa' friction-type shock absorbers fitted to the late Sir Henry Segrave's car. | 3rd Jul 1930 | Box 28 \ 1 Scan157 | |
| Inquiry about experiments on a new variable shock absorber patented by R. and featured in 'Autocar' magazine. | 15th Oct 1930 | Box 28 \ 1 Scan158 | |
| On the experimental status and proposed revival of a variable shock absorber design. | 18th Oct 1930 | Box 28 \ 1 Scan159 | |
| New driver-controlled shock absorber from Messrs. Andre, with a sample sent for examination. | 11th Nov 1930 | Box 28 \ 1 Scan160 | |
| | | | |
