| Description | Date | Identifier | |
| Requesting the production of four sets of parts for fitting bakelite ball pads to Phantom III cross steering tubes. | 19th Mar 1938 | Box 95 \ 1 scan0477 | |
| Laboratory report on the average case depth of an inner race from a Phantom II steering system after mileage. | 21th Mar 1938 | Box 95 \ 1 scan0478 | |
| Scheme outlining the modifications needed to fit a Wraith III steering box onto a Phantom 111 chassis. | 23th May 1938 | Box 95 \ 1 scan0479 | |
| Scheme for mounting a Wraith III type steering box into a Phantom 111 chassis. | 23th Mar 1938 | Box 95 \ 1 scan0480 | |
| The poundage measurements of cross steering tubes from two different vehicles. | 12th Apr 1938 | Box 95 \ 1 scan0481 | |
| Modified adjustment on cross and side steering tubes for the Phantom III model. | 20th Apr 1938 | Box 95 \ 1 scan0482 | |
| Instructions for fitting Wraith III steering components to a Phantom III vehicle. | 20th Apr 1938 | Box 95 \ 1 scan0483 | |
| Proposal to fit bakelite ball pads to the cross steering tube joints for the Phantom III model. | 11th May 1938 | Box 95 \ 1 scan0484 | |
| Proposal to fit bakelite ball pads to the cross steering tubes of Phantom III cars to gain experience. | 12th May 1938 | Box 95 \ 1 scan0485 | |
| Modifications to Phantom 111 engine controls to accommodate a Wraith III steering box. | 16th May 1938 | Box 95 \ 1 scan0486 | |
| Fitting Wraith type steering to a PH.III, recommending holding manufacture due to a mounting difficulty with the frame. | 26th May 1938 | Box 95 \ 1 scan0487 | |
| The experimental fitting of bakelite ball pads to the steering of Phantom III cars. | 28th May 1938 | Box 95 \ 1 scan0488 | |
| Parts for the Phantom III steering to be sent to Cricklewood. | 28th May 1938 | Box 95 \ 1 scan0489 | |
| The supply of bakelite pads and other steering parts for testing on customer Phantom III cars. | 30th May 1938 | Box 95 \ 1 scan0490 | |
| Low-speed steering wobbles on the Phantom III, caused by friction loss in ball joints, and trials of a new Bakelite-based material. | 31th May 1938 | Box 95 \ 1 scan0491 | |
| Fitting friction pads to the Phantom III steering on trial cars. | 31th May 1938 | Box 95 \ 1 scan0492 | |
| Experimental mounting of a Wraith steering column into a Phantom III frame. | 9th Jun 1938 | Box 95 \ 1 scan0493 | |
| Graph of steering self-centring torque versus speed for a car on a 100 ft radius circle. | 9th Jun 1938 | Box 95 \ 1 scan0494 | |
| Steering tests and modifications for the 'E' Series Phantom III, addressing low-speed wobble. | 27th Jun 1938 | Box 95 \ 1 scan0495 | |
| Request for more sets of parts for cross steering tube joints for a complaint case. | 28th Jul 1938 | Box 95 \ 1 scan0496 | |
| Requesting the forwarding of parts for Phantom III Cross Steering Tube Joints and providing associated order details. | 2nd Aug 1938 | Box 95 \ 1 scan0497 | |
| The manufacture of Bakelite ball pads for Phantom III cross steering tubes. | 5th Aug 1938 | Box 95 \ 1 scan0498 | |
| Request for production drawings for Phantom III side and cross steering ball pads to address a low-speed wobble issue. | 5th Aug 1938 | Box 95 \ 1 scan0499 | |
| Order of 'Idelite' Bakelite Laminated Rod for Phantom III steering connection ball pads. | 5th Aug 1938 | Box 95 \ 1 scan0500 | |
| Instruction to change the material of the lower pad G.83415 to Bakelite for the Phantom III steering. | 15th Aug 1938 | Box 95 \ 1 scan0501 | |
| The introduction of Bakelite friction pads for Phantom III cross steering ball joints. | 23th Aug 1938 | Box 95 \ 1 scan0502 | |
| Procedure for fitting standardised bakelite ball pads to address low-speed wobbles on Phantom III chassis. | 31th Aug 1938 | Box 95 \ 1 scan0503 | |
| Query regarding the effects of introducing 'Wraith' wheel movement on the Phantom III steering. | 12th Oct 1938 | Box 95 \ 1 scan0504 | |
| Modification to the Phantom III cross steering tube joints to reduce potential oil loss. | 14th Oct 1938 | Box 95 \ 1 scan0505 | |
| The characteristics and customer benefits of the PH.III steering system introduced on the 'Wraith' E series. | 18th Oct 1938 | Box 95 \ 1 scan0506 | |
| Optimal friction load settings and issues for the cross steering tube. | 4th Nov 1938 | Box 95 \ 1 scan0507 | |
| Details on the application of ball bearings to the steering rocker shaft roller for the Phantom 111. | 8th Dec 1938 | Box 95 \ 1 scan0508 | |
| Request to examine steering roller inner races for hardness and depth of case from chassis 3.CM.83. | 12th Dec 1938 | Box 95 \ 1 scan0509 | |
| Proposal to replace the Phantom III steering column cam roller bearings with ball bearings due to repeated failures. | 12th Dec 1938 | Box 95 \ 1 scan0510 | |
| Laboratory report on the hardness and structure of worn and unworn roller races from a Phantom III steering assembly. | 13th Dec 1938 | Box 95 \ 1 scan0511 | |
| Cause of failure for follower roller bearings on a Phantom III vehicle. | 16th Dec 1938 | Box 95 \ 1 scan0512 | |
| Parts list for incorporating ball bearings in the roller on the steering rocker for a Phantom III chassis. | 28th Dec 1938 | Box 95 \ 1 scan0513 | |
| Instructions for interchanging bearing schemes and associated parts for rocking shafts. | 28th Dec 1938 | Box 95 \ 1 scan0514 | |
| Laboratory report on the analysis of inner roller races from a Phantom III steering system. | 30th Dec 1938 | Box 95 \ 1 scan0515 | |
| Order to be placed for steering roller assemblies. | 4th Jan 1939 | Box 95 \ 1 scan0516 | |
| Letter to a supplier regarding an unreliable roller follower in the steering gear, requesting new samples and a quotation. | 4th Jan 1939 | Box 95 \ 1 scan0517 | |
| Letter to The Hoffman Manufacturing Co. Ltd. regarding the supply of sample rollers and an official order. | 4th Jan 1938 | Box 95 \ 1 scan0518 | |
| Design change for the Phantom III steering, replacing roller bearings with ball bearings in the follower roller. | 6th Jan 1939 | Box 95 \ 1 scan0519 | |
| Ordering of experimental and production steering rollers for the Phantom III. | 10th Feb 1939 | Box 95 \ 1 scan0520 | |
| Rig testing of a new ball bearing steering roller follower for the PH.III steering system. | 16th Mar 1939 | Box 95 \ 1 scan0521 | |
| Complaint report requesting the return of worn steering roller cones and cages from chassis 3.DL.106. | 3rd Apr 1939 | Box 95 \ 1 scan0522 | |
| Overload tests on a Phantom III steering gear and the replacement of a failed roller follower. | 18th Apr 1939 | Box 95 \ 1 scan0523 | |
| Requesting the construction of a new Ph.III steering gear to replace one taken for rig testing. | 25th Apr 1939 | Box 95 \ 1 scan0524 | |
| Stress calculations, failing load, and modifications for the Bent Side Steering Tube of a Phantom III. | 25th Apr 1939 | Box 95 \ 1 scan0525 | |
| Confirmation of a request to conduct an accelerated fatigue test on a Phase III steering rocking shaft. | 26th Apr 1939 | Box 95 \ 1 scan0526 | |
| The results of an examination of Phantom III steering rocker shafts for twisted splines. | 15th May 1939 | Box 95 \ 1 scan0527 | |
| Series of tests on a Ph.III steering gear to investigate a rocking shaft fracture. | 16th May 1939 | Box 95 \ 1 scan0528 | |
| Record of impact tests on a vehicle's front wheel, detailing different methods, speeds, and outcomes. | 16th May 1939 | Box 95 \ 1 scan0529 | |
| Results of impact tests 12 to 16 on a vehicle's chassis and steering components. | 16th May 1939 | Box 95 \ 1 scan0530 | |
| Collision tests analyzing the severe impact required to damage a rocking shaft and proposing design modifications. | 16th May 1939 | Box 95 \ 1 scan0531 | |
| Confirming work instructions for Phantom III steering gears related to testing twisting rocking shafts. | 23th May 1939 | Box 95 \ 1 scan0532 | |
| Instructions for retrospective modifications to the Phantom III steering system. | 7th Jun 1939 | Box 95 \ 1 scan0533 | |
| Confirming a request for a torsion test on a special Ph.III steering rocking shaft. | 27th Jun 1939 | Box 95 \ 1 scan0534 | |
| Road test report on a reduced diameter Phantom III steering rocker shaft. | 15th Aug 1939 | Box 95 \ 1 scan0535 | |
| Proposal to increase the diameter of a reduced rocking shaft to equalize twist and prevent fracture. | 15th Aug 1939 | Box 95 \ 1 scan0536 | |
| Phantom III steering rocker shaft, confirming its safety factor and agreeing to proceed with a proposal. | 16th Aug 1939 | Box 95 \ 1 scan0537 | |
| Letter from Geo. Salter & Co. Ltd. regarding a broken spring, part number G.83271. | 2nd Jan 1936 | Box 95 \ 2 scan0001 | |
| Failures and improvements for the Phantom III front suspension levers. | 2nd Jan 1936 | Box 95 \ 2 scan0002 | |
| Letter to Geo. Salter & Co. Ltd. inquiring about balances for weighing cars. | 3rd Jan 1936 | Box 95 \ 2 scan0003 | |
| Modification to the Phantom III front suspension shock damper piston. | 4th Jan 1936 | Box 95 \ 2 scan0004 | |
| Letter from Geo. Salter & Co. Ltd. analysing a broken spring and recommending a new design to prevent over-straining. | 6th Jan 1936 | Box 95 \ 2 scan0005 | |
| Letter from Geo. Salter & Co., Ltd. to Rolls-Royce, Ltd. regarding future supplies. | 6th Jan 1936 | Box 95 \ 2 scan0006 | |
| Letter to Geo. Salter & Co. Ltd. enquiring about the materials used for manufacturing springs. | 8th Jan 1936 | Box 95 \ 2 scan0007 | |
| Letter from Geo. Salter & Co. Ltd. regarding the material specifications for manufacturing springs. | 13th Jan 1936 | Box 95 \ 2 scan0008 | |
| Letter from Geo. Salter & Co. confirming instructions for making springs from Silico Manganese Steel. | 15th Jan 1936 | Box 95 \ 2 scan0009 | |
| Letter to Geo. Salter & Co. Ltd. regarding the continued use of Silico Manganese steel for springs. | 14th Jan 1936 | Box 95 \ 2 scan0010 | |
| Replacement of leather rear spring gaiters with metal ones, referencing Packard and Buick designs. | 15th Jan 1936 | Box 95 \ 2 scan0011 | |
| Ride quality and suspension of the Phantom III, comparing chassis 34-EX and 35-EX. | 20th Jan 1936 | Box 95 \ 2 scan0012 | |
| Outlining the design and rationale for fitting rubber bushes and pads to the Phantom III rear springs. | 23th Jan 1936 | Box 95 \ 2 scan0013 | |
| Modifying the precedence of experiments for the Phantom III rear suspension. | 24th Jan 1936 | Box 95 \ 2 scan0014 | |
| Invoice from Thos. Firth & John Brown Ltd. for two Main Plates, requesting an order to cover payment. | 1st Feb 1936 | Box 95 \ 2 scan0015 | |
| Internal request to place an order with T. Firth & John Brown Ltd. for two Main Plates for a Phantom III. | 4th Feb 1936 | Box 95 \ 2 scan0016 | |
| Table of measurements and hardness tests for Bottom Yoke Needle Bearings, Ph. III. | 4th Feb 1936 | Box 95 \ 2 scan0017 | |
| Modifications to the Phantom III front roll rod. | 7th Feb 1936 | Box 95 \ 2 scan0018 | |
| Fitting a rubber bearing roll rod to replace a lubricated one, and a shortened brake carrier lever to prevent fouling. | 10th Feb 1936 | Box 95 \ 2 scan0019 | |
| Design change for the Phantom III rear roll rod, replacing a bearing with a silent block to reduce cost and simplify lubrication. | 10th Feb 1936 | Box 95 \ 2 scan0020 | |
| On proposed modifications to the Wraith II front suspension to address tyre wear and steering joggle issues. | 14th Feb 1936 | Box 95 \ 2 scan0021 | |
| New rubber connecting link for the Phantom III front roll rod and a proposed experiment. | 14th Feb 1936 | Box 95 \ 2 scan0022 | |
| Proposing modifications to the Wraith II front suspension based on learnings from the Phantom III to improve wheel movement and reduce tyre wear. | 14th Feb 1936 | Box 95 \ 2 scan0023 | |
| Order for Phantom III front coil springs from the English Steel Corporation. | 18th Feb 1936 | Box 95 \ 2 scan0024 | |
| Internal order request for 6 leather covers for a Phantom III front suspension. | 21th Feb 1936 | Box 95 \ 2 scan0025 | |
| The 100-hour bumper test of Phantom III front suspension levers, recommending their use for production. | 24th Feb 1936 | Box 95 \ 2 scan0026 | |
| Modification to the key-way in the Phantom III front suspension main lever. | 24th Feb 1936 | Box 95 \ 2 scan0027 | |
| Change between two-key and multi-key levers for the Phantom III front suspension. | 24th Feb 1936 | Box 95 \ 2 scan0028 | |
| Modifications to the key-way on the Phantom III front suspension main lever. | 24th Feb 1936 | Box 95 \ 2 scan0029 | |
| Wear issues in Phantom III front suspension bearings, attributing the cause to dirt and specifying optimal clearances. | 25th Feb 1936 | Box 95 \ 2 scan0030 | |
| Photograph of two machined cylindrical metal parts, one with a smooth surface and the other with grooved patterns. | 27th Feb 1936 | Box 95 \ 2 scan0031 | |
| The ordering of rubber parts for the Phantom III rear spring suspension. | 27th Feb 1936 | Box 95 \ 2 scan0032 | |
| Cover letter accompanying a description of the Phantom III front suspension. | 27th Feb 1936 | Box 95 \ 2 scan0033 | |
| Phantom III front suspension spring tests and supplier recommendation. | 27th Feb 1936 | Box 95 \ 2 scan0034 | |
| Failure report comparing the lifespan of front suspension springs from different manufacturers. | 27th Feb 1936 | Box 95 \ 2 scan0035 | |
| Photograph of a bumper lever and spring after endurance testing. | 6th Jun 1936 | Box 95 \ 2 scan0036 | |
| Photographic comparison of two identical bumper springs after different test durations. | 6th Jun 1936 | Box 95 \ 2 scan0037 | |
| Test results for Phantom III front suspension springs and levers, comparing suppliers and deciding on production. | 28th Feb 1936 | Box 95 \ 2 scan0038 | |
| Increased clearances and dirt protection for the Phantom III front suspension bearings. | 28th Feb 1936 | Box 95 \ 2 scan0039 | |
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