| Description | Date | Identifier | |
| Letter from Park Ward & Co Ltd discussing headlight options, comparing E5/IR lamps with Lucas P.100 lamps. | 29th May 1941 | Box 118 \ 1 scan0348 | |
| Letter discussing the repainting of a car to battleship grey and specifications for the headlamps. | 28th Jul 1941 | Box 118 \ 1 scan0349 | |
| Letter from S. Smith & Sons Ltd. to W.A. Robotham confirming a new panel drawing is ready. | 23th Jan 1942 | Box 118 \ 1 scan0350 | |
| Letter to Piper Electric Blind Operator Ltd. regarding the supply of replacement switches for a car's division window. | 28th Jan 1942 | Box 118 \ 1 scan0351 | |
| Letter to Mr. Nichols of S. Smith & Sons regarding progress on an instrument-board. | 29th Jan 1942 | Box 118 \ 1 scan0352 | |
| Typed letter to Charles W. Nichols regarding progress with an instrument-board. | 29th Jan 1942 | Box 118 \ 1 scan0353 | |
| Letter to Wilmot Breeden Ltd. regarding the return of dovetails and a pending delivery of a push button switch. | 30th Jan 1942 | Box 118 \ 1 scan0354 | |
| Specification revision for Silver Ripple Chassis 1-R-1, detailing work on the spring suspension. | 26th Mar 1942 | Box 118 \ 1 scan0355 | |
| Outlining cost-reduction modifications for the 14 HP 'SILVER RIPPLE' model. | 6th Nov 1943 | Box 118 \ 1 scan0356 | |
| Potential cost-saving simplifications for the gearbox and braking system on the Silver Ripple model. | 24th Nov 1943 | Box 118 \ 1 scan0357 | |
| Modifications to the Silver Ripple Engine, including crank pin and bore dimensions. | 30th Nov 1943 | Box 118 \ 1 scan0358 | |
| Outlining a proposed programme for the 'Silver Ripple Project', discussing full-scale production and design. | 2nd Dec 1943 | Box 118 \ 1 scan0359 | |
| Report discussing production methods, toolings, and the sourcing of parts and sub-assemblies. | 2nd Dec 1943 | Box 118 \ 1 scan0360 | |
| Redesign of the Silver Ripple product, covering seats, hardware, paint, and labour estimates. | 2nd Dec 1943 | Box 118 \ 1 scan0361 | |
| Page discussing time allowances for body engineering. | 2nd Dec 1943 | Box 118 \ 1 scan0362 | |
| Outlining proposals to expedite the 'Silver Ripple' project by initiating investigations before detailed drawings are ready. | 2nd Dec 1943 | Box 118 \ 1 scan0363 | |
| The handover of arrangements, prints, and details for a 6-cylinder power unit. | 10th Dec 1943 | Box 118 \ 1 scan0364 | |
| Estimates and construction details for the 'Silver Ripple' and 'Park Ward' projects. | 21th Dec 1943 | Box 118 \ 1 scan0365 | |
| Letter to The Pressed Steel Co. Ltd. to reopen contacts and discuss post-war production possibilities. | 16th Dec 1943 | Box 118 \ 1 scan0366 | |
| Manufacturing approach for Silver Ripple Road Springs for post-war products. | 21th Dec 1943 | Box 118 \ 1 scan0367 | |
| Sourcing and manufacturing of Silver Ripple Road Springs for post-war vehicles. | 21th Dec 1943 | Box 118 \ 1 scan0368 | |
| Quotation from Pressed Steel for the 'Silver Ripple' body. | 21th Dec 1943 | Box 118 \ 1 scan0369 | |
| Faults and specifications for the Silver Ripple and Bentley chassis. | 21th Dec 1943 | Box 118 \ 1 scan0370 | |
| List of required designs for the 'Silver Ripple' project, detailing components for the initial build and a Stage II version. | 22th Dec 1943 | Box 118 \ 1 scan0371 | |
| Clutch failure on the 'Silver Ripple' car and recommending a specific replacement. | 23th Dec 1943 | Box 118 \ 1 scan0372 | |
| Chassis and coachwork in progress for Silver Ripple and Myth projects, and a list of required specifications. | 3rd Jan 1944 | Box 118 \ 1 scan0373 | |
| Listing design requirements for the 'Silver Ripple' and 'Stage II Silver Ripple' models. | 22th Dec 1943 | Box 118 \ 1 scan0374 | |
| Scheme for mass-producing a cheap, drop-forged 4-cylinder crankshaft for the Silver Ripple model. | 4th Jan 1944 | Box 118 \ 1 scan0375 | |
| Design scheme for the Silver Ripple crankshaft and cylinder head. | 4th Jan 1944 | Box 118 \ 1 scan0376 | |
| Forwarding the preliminary issue of the 'Silver Ripple Specification - Stage 1', detailing outstanding design work. | 6th Jan 1944 | Box 118 \ 1 scan0377 | |
| Brief description of specification for the Silver Ripple - Stage 1. | 6th Jan 1944 | Box 118 \ 1 scan0378 | |
| Specification sheet detailing engine components including the crankcase, crankshaft, and connecting rods. | 17th Jan 1941 | Box 118 \ 1 scan0379 | |
| Specification sheet for engine components including pistons, cylinder head, valves, and carburettor. | 17th Jan 1941 | Box 118 \ 1 scan0380 | |
| Specification sheet for various engine components, detailing their design and status. | 17th Jan 1941 | Box 118 \ 1 scan0381 | |
| Specification sheet detailing various vehicle components including indicators, valves, fan, and radiator. | 17th Jan 1941 | Box 118 \ 1 scan0382 | |
| Specification sheet listing part changes and rationalisations for various vehicle assemblies. | 17th Jan 1941 | Box 118 \ 1 scan0383 | |
| Specification sheet for vehicle components, listing descriptions, design numbers, and remarks. | 17th Jan 1941 | Box 118 \ 1 scan0384 | |
| Specification sheet detailing rear brakes, hubs, servo motor, master cylinder, and frame fittings. | 17th Jan 1941 | Box 118 \ 1 scan0385 | |
| Specification sheet listing parts and modifications for vehicle components including stays, bumpers, springs, and steering mechanisms. | 17th Jan 1941 | Box 118 \ 1 scan0386 | |
| Specification sheet detailing various vehicle components including brakes, wheels, and steering. | 17th Jan 1941 | Box 118 \ 1 scan0387 | |
| Specification sheet detailing various car components like piping, dampers, and stabilizers. | 17th Jan 1941 | Box 118 \ 1 scan0388 | |
| Specification sheet for vehicle components, detailing parts and their design status. | 17th Jan 1941 | Box 118 \ 1 scan0389 | |
| Specification sheet listing electrical components and associated parts. | 17th Jan 1941 | Box 118 \ 1 scan0390 | |
| Specification sheet for vehicle components, including lamps, horns, regulator, cutout, and a petrol pump. | 17th Jan 1941 | Box 118 \ 1 scan0391 | |
| Confidential memo outlining a plan for the construction of five prototype car bodies for the 'Silver Ripple' model. | 6th Jan 1944 | Box 118 \ 1 scan0392 | |
| Typed memorandum discussing a suggested programme, work distribution, and material ordering. | 10th Jan 1944 | Box 118 \ 1 scan0393 | |
| Report request concerning valve gear noise and lubrication issues on the 'Silver Ripple' car. | 10th Jan 1944 | Box 118 \ 1 scan0394 | |
| Listing materials required for the construction of prototype bodies for the Silver Ripple. | 10th Jan 1944 | Box 118 \ 1 scan0395 | |
| Prototype construction and material ordering for the Silver Ripple project. | 12th Jan 1944 | Box 118 \ 1 scan0396 | |
| The material requirements for producing five Silver Ripple frames. | 13th Jan 1944 | Box 118 \ 1 scan0397 | |
| Revised specification for Bentley Unit B.40-No.1 and Silver Riplet Chassis 1-RT-1, detailing work carried out and petrol pump modifications. | 14th Jan 1944 | Box 118 \ 1 scan0398 | |
| Confidential memo confirming an instruction to bore out an existing 16 HP 4-Cylinder Silver Ripple engine casting. | 15th Jan 1944 | Box 118 \ 1 scan0399 | |
| The quantities and specifications for steel and aluminium sheets required for ten prototypes. | 17th Jan 1944 | Box 118 \ 1 scan0400 | |
| Quantities and specifications of steel and aluminium sheets for 'Silver Ripple' prototypes. | 17th Jan 1944 | Box 118 \ 1 scan0401 | |
| Scheme detailing the layout and welded construction for the front end of a chassis frame. | 27th Jan 1944 | Box 118 \ 1 scan0402 | |
| Design scheme for a welded cruciform frame, known as 'Silver Ripple'. | 27th Jan 1944 | Box 118 \ 1 scan0403 | |
| Modification scheme for the Silver Ripple's frame and gusset to accommodate the .104 Bent Front Pan. | 27th Jan 1944 | Box 118 \ 1 scan0404 | |
| Layout scheme for the 'Silver Ripple' engine in frame side elevation, issued for record purposes. | 27th Jan 1944 | Box 118 \ 1 scan0405 | |
| Scheme for the layout of the Silver Ripple engine in its frame, showing a side elevation. | 27th Jan 1944 | Box 118 \ 1 scan0406 | |
| Scheme for the general arrangement of the chassis for the 'Silver Ripple' prototypes. | 27th Jan 1944 | Box 118 \ 1 scan0407 | |
| Scheme for a strengthened dynamo support bracket for the 'Silver Ripple' and 1 RT 1 Chassis. | 27th Jan 1944 | Box 118 \ 1 scan0408 | |
| Ordering materials for the 0.62 Silver Ripple and 0.80 frames for experimental purposes. | 28th Jan 1944 | Box 118 \ 1 scan0409 | |
| Potential weight savings on the Silver Ripple chassis. | 5th Feb 1944 | Box 118 \ 1 scan0410 | |
| Requesting a weight estimate for the Silver Ripple Body with light allow wings from P.S.C. | 7th Feb 1944 | Box 118 \ 1 scan0411 | |
| Preliminary weight estimate for the 'Silver Ripple' body and its components. | 12th Feb 1944 | Box 118 \ 1 scan0412 | |
| Comparing internal weight estimates for trim and hardware with an external supplier's figures. | 15th Feb 1944 | Box 118 \ 1 scan0413 | |
| The weight reduction analysis for the Silver Ripple chassis. | 18th Feb 1944 | Box 118 \ 1 scan0414 | |
| Calculating and discussing potential weight reduction across various car components. | 18th Feb 1944 | Box 118 \ 1 scan0415 | |
| The 'Silver Ripple' specification, its weight due to shared parts, and plans for a lighter second version. | 22th Feb 1944 | Box 118 \ 1 scan0416 | |
| Body clearance for the Silver Ripple Prototype, referencing Mulliners and a full-scale body picture. | 15th Mar 1944 | Box 118 \ 1 scan0417 | |
| Outlining desired features for a car undergoing a 10,000-mile test, including tool storage and a reverse light. | 23th Dec 1929 | Box 118 \ 2 scan0001 | |
| 10,000 miles test, discussing the rear light switch, starting handle position, and bumper standardisation. | 31th Dec 1929 | Box 118 \ 2 scan0002 | |
| Bumper pads on dumb irons, noting approved changes to height, bolt sizes, and adaptations for English bumpers. | 10th Mar 1930 | Box 118 \ 2 scan0003 | |
| Design, aesthetics, and practicality of car bumpers and bumperettes, with a preference for a semi-elliptical design. | 30th Apr 1930 | Box 118 \ 2 scan0004 | |
| Modifications and alternative proposals for the starting handle. | 6th Jun 1930 | Box 118 \ 2 scan0005 | |
| Preference for half-elliptical bumpers and concerns about bumper design for the 24-EX model. | 6th Jun 1930 | Box 118 \ 2 scan0006 | |
| Proposed bumper design with an accompanying sketch. | 14th Jun 1930 | Box 118 \ 2 scan0007 | |
| Responding to points about the design of left-hand chassis components, specifically bumpers, clutch, and road springs. | 1st Jul 1930 | Box 118 \ 2 scan0008 | |
| Progress report on modifications and updates for the gear shift, horns, oils, and shutters. | 2nd Jul 1930 | Box 118 \ 2 scan0009 | |
| Design, testing, and manufacturing of collision bumpers for American models. | 3rd Jul 1930 | Box 118 \ 2 scan0010 | |
| Bumper design criticism and the logistics of a collision test on a second left-hand chassis. | 4th Jul 1930 | Box 118 \ 2 scan0011 | |
| Position on L.H. Chassis for America and arranging further discussion. | 7th Jul 1930 | Box 118 \ 2 scan0012 | |
| Collision tests for bumpers on the L.H.Phantom II Chassis. | 9th Jul 1930 | Box 118 \ 2 scan0013 | |
| Request for a report on the results of a bumper test for the L.HP II Chassis (24-EX). | 22th Aug 1930 | Box 118 \ 2 scan0014 | |
| Urgent request for four lead weights with specified dimensions for testing American bumpers. | 23th Aug 1930 | Box 118 \ 2 scan0015 | |
| Re-building of the 24-EX car for bumper testing. | 29th Aug 1930 | Box 118 \ 2 scan0016 | |
| Progress report on a bumper test for a left-hand chassis, delayed due to equipment modification. | 10th Sep 1930 | Box 118 \ 2 scan0017 | |
| The failure of American-supplied bumpers under stress testing. | 15th Sep 1930 | Box 118 \ 2 scan0018 | |
| Blueprint drawing of a component showing front and rear sections with dimensional measurements. | 16th Sep 1930 | Box 118 \ 2 scan0019 | |
| Results of tests on bumpers for the American market. | 16th Sep 1930 | Box 118 \ 2 scan0020 | |
| Replying to a query about developments in English manufactured bumpers, suggesting Wilmot-Breeden Limited. | 9th Mar 1931 | Box 118 \ 2 scan0021 | |
| Recommendation to contact Wilmot-Breedon Ltd. for particulars on bumpers for the U.S.A. | 20th Mar 1931 | Box 118 \ 2 scan0022 | |
| Confirming the despatch of a front dumb iron with a bumper pad and discussing its dimensions. | 5th May 1931 | Box 118 \ 2 scan0023 | |
| Design changes for front and rear bumper fixings on the 20/25 HP model. | 21th May 1931 | Box 118 \ 2 scan0024 | |
| Girling brakes, a visit to Rovers, and proposed solutions for oscillation issues on the 'Spectre' and 20/25 trials car models. | 16th Nov 1933 | Box 118 \ 2 scan0025 | |
| Letter to The Rover Motor Co. Ltd. requesting a stabilising bumper for experimental testing. | 18th Nov 1933 | Box 118 \ 2 scan0026 | |
| Acquisition of a frictional damped bumper for a 20/25 model to test its effectiveness in eliminating radiator movement. | 20th Nov 1933 | Box 118 \ 2 scan0027 | |
| Letter from The Rover Company Ltd. regarding the development of an experimental bumper. | 20th Nov 1933 | Box 118 \ 2 scan0028 | |
| Letter to Wilmot Breedon Ltd. regarding the supply of experimental stabilising bumpers for a 20/25 HP car. | 21th Nov 1933 | Box 118 \ 2 scan0029 | |
| Test for a frictional damped bumper on a 20/25 Trials Car to reduce radiator movement. | 22th Nov 1933 | Box 118 \ 2 scan0030 | |
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