| Description | Date | Identifier | |
| Test results for Front Axle Springs, part number G.83270. | 20th Nov 1935 | Box 95 \ 3 scan0177 | |
| Micro-examination report on a failed lever from a Phantom III front suspension unit, investigating incorrect heat-treatment. | 28th Nov 1935 | Box 95 \ 3 scan0178 | |
| Laboratory photomicrograph showing two surfaces, labelled B and A, at 3 diameters magnification. | 20th Jun 1935 | Box 95 \ 3 scan0179 | |
| Laboratory photomicrograph showing a material's microstructure at 100x magnification. | 20th Jun 1935 | Box 95 \ 3 scan0180 | |
| Laboratory photomicrograph at 100 diameters magnification. | 20th Jun 1935 | Box 95 \ 3 scan0181 | |
| Micro-examination report on a Phantom III front spring, detailing its material analysis and hardness tests. | 7th Dec 1935 | Box 95 \ 3 scan0182 | |
| Laboratory photomicrograph showing a material at 150 diameters magnification. | 20th Jun 1935 | Box 95 \ 3 scan0183 | |
| Laboratory photomicrograph showing a material's microstructure. | 20th Jun 1935 | Box 95 \ 3 scan0184 | |
| Letter to Thos. Firth & John Brown Ltd. regarding the supply of rear spring main plates and manufacturing difficulties with oil holes. | 10th Dec 1935 | Box 95 \ 3 scan0185 | |
| Letter to Messrs. Thos. Firth & John Brown Ltd. sending a drawing requested by telephone. | 11th Dec 1935 | Box 95 \ 3 scan0186 | |
| Letter from a supplier regarding the machining and potential substitution of solid eyes for springs. | 11th Dec 1935 | Box 95 \ 3 scan0187 | |
| The order of Phantom III front suspension springs and awaiting test results on samples from other suppliers. | 11th Dec 1935 | Box 95 \ 3 scan0188 | |
| Laboratory report on a collapsed front suspension lever, noting the lack of heat treatment. | 13th Dec 1935 | Box 95 \ 3 scan0189 | |
| Letter to a supplier requesting the steel specification for large coil springs after a test failure revealed an unexpected material. | 16th Dec 1935 | Box 95 \ 3 scan0190 | |
| Internal request to order front suspension springs for the Phantom III. | 17th Dec 1935 | Box 95 \ 3 scan0191 | |
| Phantom III front suspension springs, comparing suppliers and analysing the material of a broken spring. | 16th Dec 1935 | Box 95 \ 3 scan0192 | |
| Micro-examination report comparing two different designs of broken Phantom III front suspension unit levers. | 19th Dec 1935 | Box 95 \ 3 scan0193 | |
| Modifications to the Phantom III front suspension main lever to prevent fractures. | 20th Dec 1935 | Box 95 \ 3 scan0194 | |
| Letter from Geo. Salter & Co. Ltd. regarding the investigation of a broken large coil spring. | 19th Dec 1935 | Box 95 \ 3 scan0195 | |
| Requesting a pair of modified suspension levers and fulcrum pins for a bump test on a Phantom III. | 20th Dec 1935 | Box 95 \ 3 scan0196 | |
| Modifying the Phantom III front suspension main lever and fulcrum pin to prevent fractures. | 20th Dec 1936 | Box 95 \ 3 scan0197 | |
| Laboratory report on the material analysis and hardness testing of a Phantom III Front Spring. | 24th Dec 1935 | Box 95 \ 3 scan0198 | |
| Technical memo discussing the issues and compromises related to using soft suspension springs on the Ph.lll model. | 30th Dec 1935 | Box 95 \ 3 scan0199 | |
| Suspension design improvements and features for the Wraith, 25HP, and Bentley chassis. | 30th Dec 1935 | Box 95 \ 3 scan0200 | |
| Broken Coil Spring (part G83271) sent to Messrs Geo. Salter & Co. Ltd. | 31th Dec 1935 | Box 95 \ 3 scan0201 | |
| Letter to Geo. Salter & Co. Ltd. concerning a failed spring and the material specification for replacements. | 31th Dec 1935 | Box 95 \ 3 scan0202 | |
| The failure of Phantom III front suspension levers and proposed design modifications. | 31th Dec 1935 | Box 95 \ 3 scan0203 | |
| Photograph of a bumper component for 3' Cams, noting the production time. | 3rd Dec 1935 | Box 95 \ 3 scan0204 | |
| Photograph showing a failed 'Bumper' component after 30 hours of testing. | 12th Dec 1935 | Box 95 \ 3 scan0205 | |
| Photograph detailing thickness measurements of a bumper for 3-inch cams after a 30-hour test. | 12th Dec 1935 | Box 95 \ 3 scan0206 | |
| Photograph of a Bumper for 3 inch Cams showing various thickness measurements after testing. | 3rd Dec 1935 | Box 95 \ 3 scan0207 | |
| Order for various sizes of bellows for Spectre Shock Dampers. | 14th Sep 1934 | Box 95 \ 4 scan0001 | |
| Method for testing Spectre front shock dampers and requesting the production of adaptors and links. | 14th Sep 1934 | Box 95 \ 4 scan0002 | |
| The modification of Spectre shock dampers to create a variable leak. | 19th Sep 1934 | Box 95 \ 4 scan0003 | |
| Difficulties with inaccessible replenishing valves on the Spectre's shock absorbers. | 1st Oct 1934 | Box 95 \ 4 scan0004 | |
| Request to fit a gauge on the dashboard for the shock damper control system on the 'Spectre'. | 6th Oct 1934 | Box 95 \ 4 scan0005 | |
| Proposed improvements to the Spectre front shock dampers. | 31th Oct 1934 | Box 95 \ 4 scan0006 | |
| Continued memorandum detailing proposed alterations to a valve chamber bellows cover and a governor bleeding screw. | 31th Oct 1934 | Box 95 \ 4 scan0007 | |
| Request to manufacture parts for Spectre Rear Shock Dampers. | 5th Nov 1934 | Box 95 \ 4 scan0008 | |
| Required modifications for the 'Spectre' rear damper suspension. | 15th Nov 1934 | Box 95 \ 4 scan0009 | |
| Secret memo regarding a revised oil filler and bearing housing for the Spectre front suspension. | 11th Feb 1935 | Box 95 \ 4 scan0010 | |
| Agreement to fit Spectre III front shock dampers to chassis Ex.16857, noting the ease of removal. | 27th Feb 1935 | Box 95 \ 4 scan0011 | |
| Requesting parts and an adaptor for Spectre front shock damper tests. | 8th Mar 1935 | Box 95 \ 4 scan0012 | |
| Request to manufacture parts for testing Spectre Suspension Auto Lock Dampers. | 12th Mar 1935 | Box 95 \ 4 scan0013 | |
| Preliminary tests of Automatic Lock Shock Dampers designed to relieve discomfort over hump-backed bridges. | 26th Mar 1935 | Box 95 \ 4 scan0014 | |
| Proposed arrangement for hand control of autolock dampers for the Spectre model. | 15th Apr 1935 | Box 95 \ 4 scan0015 | |
| Performance and requirements of Autolock dampers compared to existing models. | 15th Apr 1935 | Box 95 \ 4 scan0016 | |
| Hand-drawn graph showing the performance characteristics of an autolock damper for a rear axle. | 15th Apr 1935 | Box 95 \ 4 scan0017 | |
| Hand-drawn graph illustrating damping loads versus axle movement, with a suggested mode for autolock control. | 15th Apr 1935 | Box 95 \ 4 scan0018 | |
| Suggested modification to the hand control of an Autolock damper, including a diagram and explanatory notes. | 14th May 1935 | Box 95 \ 4 scan0019 | |
| Production of Spectre Autolock Rear Dampers, urging the use of current drawings to gain experience. | 14th May 1935 | Box 95 \ 4 scan0020 | |
| Temporary scheme for modifications to the rear auto-lock damper on the Spectre model. | 31th May 1935 | Box 95 \ 4 scan0021 | |
| Temporary scheme for modifications to the Spectre's rear auto-lock damper. | 31th May 1935 | Box 95 \ 4 scan0022 | |
| Machining modifications and performance testing for Spectre Integral Auto Lock Dampers. | 7th Jun 1935 | Box 95 \ 4 scan0023 | |
| Graph showing the relationship between locking pressure, damping pressure, and valve spring load for Spectre 2 auto lock dampers. | 7th Jun 1935 | Box 95 \ 4 scan0024 | |
| Graph showing the relation between locking pressure, damping pressure, and valve spring load for Spectre 2 Auto Lock Dampers. | 7th Jun 1935 | Box 95 \ 4 scan0025 | |
| Hand-drawn cross-section diagram of a mechanical part with annotations. | 25th Jun 1935 | Box 95 \ 4 scan0026 | |
| Fitting smaller diameter bellows to the front shock dampers for the Spectre III. | 25th Jun 1935 | Box 95 \ 4 scan0027 | |
| Simpler method for preventing piston seizing in front shock absorbers for production cars. | 27th Jun 1935 | Box 95 \ 4 scan0028 | |
| Testing and necessary modifications for unit construction front shock dampers on a Spectre III rig. | 1st Jul 1935 | Box 95 \ 4 scan0029 | |
| Modifications to the Spectre Rear Damper Suspension to improve accessibility. | 3rd Jul 1935 | Box 95 \ 4 scan0030 | |
| Secret memo regarding modifications to the Spectre front dampers, adapting a governor-controlled valve. | 23th Aug 1935 | Box 95 \ 4 scan0031 | |
| Jamming issue with experimental autolock rear dampers for the Spectre model. | 4th Sep 1935 | Box 95 \ 4 scan0032 | |
| Proposal for modifications to the Spectre's rear damper, roll-bar, and spring anchorage to reduce damage. | 10th Sep 1935 | Box 95 \ 4 scan0033 | |
| Production switch to Autolock dampers for the Spectre front shock assembly. | 11th Sep 1935 | Box 95 \ 4 scan0034 | |
| Stone guard for the rear shock dampers on the Phantom III. | 3rd Oct 1935 | Box 95 \ 4 scan0035 | |
| Temporary scheme for rear axle anti-lock dampers on the Phantom III. | 19th Oct 1935 | Box 95 \ 4 scan0036 | |
| Modifying Autolock Rear Dampers by fitting a temporary cast-iron bush. | 21th Oct 1935 | Box 95 \ 4 scan0037 | |
| Instruction to delete the counter-bores on the Rear Autolock Damper casing. | 22th Oct 1935 | Box 95 \ 4 scan0038 | |
| Request to fit a tested pair of Autolock Rear Dampers to vehicle 35-EX. | 6th Nov 1935 | Box 95 \ 4 scan0039 | |
| Sending a second pair of Autolock Rear Dampers to France for Spectre II. | 9th Nov 1935 | Box 95 \ 4 scan0040 | |
| Required shock damper rig tests and capacity issues with a new rig. | 3rd Dec 1935 | Box 95 \ 4 scan0041 | |
| The requirement for 15,000 miles of road testing for 'Autolock' dampers on the Phantom III. | 19th Dec 1935 | Box 95 \ 4 scan0042 | |
| Request to build a pair of Phantom III Autolock Front Dampers for road testing on either car 32-EX or 33-EX. | 9th Jan 1936 | Box 95 \ 4 scan0043 | |
| Modifications to the Phantom III Rear Shock Damper. | 9th Jan 1936 | Box 95 \ 4 scan0044 | |
| Request to produce one set of parts for a Shock Damper Test Rig. | 22th Jan 1936 | Box 95 \ 4 scan0045 | |
| Modifications to the Phantom III rear autolock dampers to reduce cost and facilitate handling. | 10th Feb 1936 | Box 95 \ 4 scan0046 | |
| List of six small modifications to the Rear Autolock Dampers for the Phantom III model. | 10th Feb 1936 | Box 95 \ 4 scan0047 | |
| Simplified design for the Phantom III rear roll rod and shock absorber connecting link. | 19th Feb 1936 | Box 95 \ 4 scan0048 | |
| Production request memo for Shock Damper Indicator components. | 28th Feb 1936 | Box 95 \ 4 scan0049 | |
| Requesting the production of specific bushes to reduce shock damper bush wear. | 10th Mar 1936 | Box 95 \ 4 scan0050 | |
| Order for parts for an Auto-lock Damper and noting issues with Bump Valves. | 20th Mar 1936 | Box 95 \ 4 scan0051 | |
| Instruction regarding the replacement of seized cast iron bushes on rear shock dampers for chassis 21-G-IV. | 25th Mar 1936 | Box 95 \ 4 scan0052 | |
| Complaints of worn shock damper bearings and proposing a trial of needle bearings. | 5th May 1936 | Box 95 \ 4 scan0053 | |
| Complaints of shock damper knocks caused by slackness in the main lever bushes. | 11th May 1936 | Box 95 \ 4 scan0054 | |
| Request to build three standard valve chambers for Phantom III Front Shock Dampers. | 19th Jun 1936 | Box 95 \ 4 scan0055 | |
| Order for two types of shock damper bellow units from the Packless Gland Co. | 29th Jun 1936 | Box 95 \ 4 scan0056 | |
| Instruction to replace auto-lock front shock dampers with standard valve chambers on a 37-EX model. | 2nd Jul 1936 | Box 95 \ 4 scan0057 | |
| Increase in the size of the stone guard for the Phantom III rear shock dampers. | 11th Aug 1936 | Box 95 \ 4 scan0058 | |
| Suggestion for experimental material changes and treatments for hydraulic damper components, specifically the piston wearing pads and the lever. | 14th Jul 1936 | Box 95 \ 4 scan0059 | |
| Trial for 'Gaco' rubber bushes for shock damper and roll bar connecting rods. | 13th Aug 1936 | Box 95 \ 4 scan0060 | |
| Programme update on resolving shock damper knocks, detailing eight technical points. | 17th Aug 1936 | Box 95 \ 4 scan0061 | |
| Design modifications and testing of rubber-ended shock absorber and roll rod links for Phantom III and Wraith II models, based on American designs. | 18th Aug 1936 | Box 95 \ 4 scan0062 | |
| Modifications to the Phantom III rear shock absorbers and rear roll rod. | 31th Aug 1936 | Box 95 \ 4 scan0063 | |
| Suggestion to move a 4-way junction piece on the Phantom III for better accessibility. | 1st Sep 1936 | Box 95 \ 4 scan0064 | |
| Test report on a shock damper connecting tube of the American type with rubber control pin bushes. | 3rd Sep 1936 | Box 95 \ 4 scan0065 | |
| Modifications and testing of independent suspension dampers, transferred between experimental cars. | 11th Sep 1936 | Box 95 \ 4 scan0066 | |
| Blueprint detailing a modification to a plug for replenishment valves. | 22th Aug 1936 | Box 95 \ 4 scan0067 | |
| Blueprint for a Disc-Valve-Block, with dimensions and manufacturing notes. | 27th Aug 1936 | Box 95 \ 4 scan0068 | |
| Blueprint for a Tube - Valve Block component with machining instructions. | 22th Aug 1936 | Box 95 \ 4 scan0069 | |
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