| Description | Date | Identifier | |
| Description of the generation of P.D. and E.M.F. within the armature and field circuits. | 13th Aug 1919 | West Wittering \ C \ August1919 Scan41 | |
| Description of the operation of a Type A Dynamo, focusing on brush arrangement, resistance circuits, and modifications. | 13th Aug 1919 | West Wittering \ C \ August1919 Scan42 | |
| Description of the current speed characteristic and operation of a dynamo, including magnetisation and brush currents. | 8th Aug 1919 | West Wittering \ C \ August1919 Scan43 | |
| Continued page describing the testing of a dynamo, comparing its performance curves to C.A.V. and Lucas dynamos. | 13th Aug 1919 | West Wittering \ C \ August1919 Scan44 | |
| Continued analysis of a dynamo's performance under different control schemes and connections. | 13th Aug 1919 | West Wittering \ C \ August1919 Scan45 | |
| Analysis of cut-out specifications and a comparison of C.A.V., Lucas, and Smith lighting dynamos. | 13th Aug 1919 | West Wittering \ C \ August1919 Scan46 | |
| New machine from Messrs. Smith for consideration on chassis produced after the first 500 units. | 13th Aug 1919 | West Wittering \ C \ August1919 Scan47 | |
| Graph of output-speed curves for a Smith (T&M) Type A Dynamo with 4, 5, 6 and 7 cells. | 26th May 1919 | West Wittering \ C \ August1919 Scan48 | |
| Graph of open circuit volt curves for a Smith (T&M) Type A Dynamo. | 6th Jun 1919 | West Wittering \ C \ August1919 Scan49 | |
| Graph showing the open circuit voltage curves for a Smith (T&M) Type A Dynamo with separate excitation. | 13th Jun 1919 | West Wittering \ C \ August1919 Scan50 | |
| Graph showing the performance curves for a Smith (T&M) Type A Dynamo under various cell configurations. | 30th Jun 1919 | West Wittering \ C \ August1919 Scan51 | |
| Diagram of the windings, brushes, and terminals for a Smith (T & M) Dynamo, viewed from the commutator end. | 12th Dec 1921 | West Wittering \ C \ August1919 Scan52 | |
| Table of currents at various speeds for a Smith (T & M) Type 'A' Dynamo, including a circuit diagram. | 1st Jul 1919 | West Wittering \ C \ August1919 Scan53 | |
| Analysis of test results for various lighting dynamos under open circuit conditions. | 1st Jul 1919 | West Wittering \ C \ August1919 Scan54 | |
| Comparison of shunt wound and normal electrical outputs for C.A.V., Lucas, and Smith components. | 16th Apr 1919 | West Wittering \ C \ August1919 Scan55 | |
| Tabulated report detailing component failures, their operational run time, and associated remarks. | 26th Apr 1917 | West Wittering \ C \ August1919 Scan56 | |
| Alterations to the 20 HP crankcase and oiling system. | 20th Aug 1919 | West Wittering \ C \ August1919 Scan57 | |
| Investigation into the causes of piston knocks, identifying alignment and lubrication as the primary factors. | 29th Aug 1919 | West Wittering \ C \ August1919 Scan59 | |
| Technical note on investigating and curing piston knock by adjusting piston alignment and clearance. | 29th Aug 1919 | West Wittering \ C \ August1919 Scan60 | |
| Experiments to eliminate engine knocking, including piston and bearing modifications. | 29th Aug 1919 | West Wittering \ C \ August1919 Scan61 | |
| Experiments with different piston designs and lubrication oils to resolve engine knocking issues. | 29th Aug 1919 | West Wittering \ C \ August1919 Scan62 | |
| Investigations into the causes and solutions for engine piston knock. | 29th Aug 1919 | West Wittering \ C \ August1919 Scan63 | |
| Letter from F.H. Royce to The Tudor Accumulator Co. Ltd. regarding a 12-volt battery for Rolls-Royce car lighting. | 13th Feb 1919 | West Wittering \ C \ February1919 Scan1 | |
| Telegram confirmation about adopting a friction anchorage to manage pre-ignitions and torsional stresses, and cancelling an extra petrol tank. | 13th Feb 1919 | West Wittering \ C \ February1919 Scan2 | |
| Drawings and specifications for 20 HP cam forms. | 15th Feb 1919 | West Wittering \ C \ February1919 Scan3 | |
| Authorizing work to proceed on the formers for the cams. | 15th Feb 1919 | West Wittering \ C \ February1919 Scan4 | |
| From E. to E.H. concerning the material status for a 20 HP Chassis Engine. | 15th Feb 1919 | West Wittering \ C \ February1919 Scan5 | |
| Telegram about adopting a friction anchorage to counter pre-ignition and excessive torsional stresses. | 10th Jul 1926 | West Wittering \ C \ February1919 Scan6 | |
| Telegram from Royce giving instructions to consult named individuals regarding a starter switch and to cancel plans for an extra petrol tank. | 11th Mar 1918 | West Wittering \ C \ February1919 Scan7 | |
| Blueprint alterations for an instruction plate on the 20 HP Back Axle. | 18th Feb 1919 | West Wittering \ C \ February1919 Scan8 | |
| Request for materials and work to commence on cut-off valves for 'Salamandre' stoves in the West Wittering offices. | 18th Feb 1919 | West Wittering \ C \ February1919 Scan9 | |
| Copy of a telegram from Mr. Royce regarding a frame stiffener. | 19th Feb 1919 | West Wittering \ C \ February1919 Scan10 | |
| Design of 40/50 HP hubs for Michelin detachable wheels, with critiques from Mr. Royce. | 19th Feb 1919 | West Wittering \ C \ February1919 Scan11 | |
| Axle tube design, tyre specifications, and requesting blueprint updates. | 19th Feb 1919 | West Wittering \ C \ February1919 Scan12 | |
| Confirmation of a telegram agreeing to abandon fitting a frame stiffener for the present. | 19th Feb 1919 | West Wittering \ C \ February1919 Scan13 | |
| Particulars of radiator tubes, including size, strength, and design. | 24th Feb 1919 | West Wittering \ C \ February1919 Scan14 | |
| Confirmation of a telegram with instructions on vehicle weight, performance testing, and component materials. | 25th Feb 1919 | West Wittering \ C \ February1919 Scan15 | |
| Telegram received by telephone with instructions about testing a Delage vehicle. | 25th Feb 1919 | West Wittering \ C \ February1919 Scan16 | |
| Telegram received by telephone reporting on an engine test result. | 25th Feb 1919 | West Wittering \ C \ February1919 Scan17 | |
| Telegram regarding Eagle engine compression ratios and friction anchorage. | 25th Feb 1919 | West Wittering \ C \ February1919 Scan18 | |
| Telegram received by telephone from Royce regarding bronze and steel plates. | 25th Feb 1919 | West Wittering \ C \ February1919 Scan19 | |
| Unlocked piston pins and locking screw types for the 40/50 HP chassis. | 28th Feb 1919 | West Wittering \ C \ February1919 Scan20 | |
| The drawing and forging allowance for a 20 HP crankshaft. | 28th Feb 1919 | West Wittering \ C \ February1919 Scan22 | |
| Four different radiator tube designs for testing purposes. | 4th Jan 1919 | West Wittering \ C \ January1919 Scan0 | |
| Testing bronze alloys and the placement of wire loops on a tank or end plate for strength. | 24th Jan 1919 | West Wittering \ C \ January1919 Scan1 | |
| Proposal for a dual magneto and battery ignition system for the 20 HP engine, including requirements for a new magneto. | 7th Jan 1919 | West Wittering \ C \ January1919 Scan2 | |
| Request from E. to E.H. for a tin of grey chassis paint to be sent to West Wittering. | 7th Jan 1919 | West Wittering \ C \ January1919 Scan3 | |
| Paint swatch of a dark grey/black color. | 30th Apr 1913 | West Wittering \ C \ January1919 Scan4 | |
| Requesting an experimental check on a throttle spring and a potential redesign if required. | 11th Jan 1919 | West Wittering \ C \ January1919 Scan5 | |
| Suggesting modifications to an epicyclic gear design to improve reliability and reduce risks. | 11th Jan 1919 | West Wittering \ C \ January1919 Scan6 | |
| Optimal radiator tube dimensions for the 40/50 HP chassis. | 20th Jan 1919 | West Wittering \ C \ January1919 Scan7 | |
| Amendment to the 40/50 HP chassis specification concerning issues with the carburettor's float-chamber mechanism. | 20th Jan 1919 | West Wittering \ C \ January1919 Scan8 | |
| Telegram confirmation from Royce requesting Hives to overhaul and critique a Delage car. | 23th Jan 1919 | West Wittering \ C \ January1919 Scan9 | |
| Telegram received by telephone concerning a Delage being sent by road. | 24th Jan 1919 | West Wittering \ C \ January1919 Scan10 | |
| Correspondence regarding the general arrangement and further instructions for a back axle for a small chassis. | 21th Jan 1919 | West Wittering \ C \ January1919 Scan11 | |
| Three-speed gearbox for a small chassis, requesting work on associated drawings and forgings. | 31th Jan 1919 | West Wittering \ C \ January1919 Scan12 | |
| Issues with a Packard Bijur Dynamo, a faulty Buick dynamo, and the danger of the engine without a self-starter. | 4th Jul 1919 | West Wittering \ C \ July1919 Scan0 | |
| Dispatch of drawing No.LeC.1090 for a 20 HP Damped Spring Drive, requesting detail drawings to be put in hand. | 3rd Jul 1919 | West Wittering \ C \ July1919 Scan1 | |
| The 20 HP fan and fan pulley, referencing drawing Lec.1108 and a future sheet metal fan design. | 7th Jan 1929 | West Wittering \ C \ July1919 Scan2 | |
| The ordering of dies for small sheet metal pressings for a 40/50 HP distribution board. | 14th Jul 1919 | West Wittering \ C \ July1919 Scan3 | |
| Drawing No. LcC.1112 for the RE 20 HP back axle and its Michelin detachable flanges. | 7th Jul 1919 | West Wittering \ C \ July1919 Scan4 | |
| Distribution board for the 40/50 HP chassis, referencing drawing No. Lec.1107. | 17th Jul 1919 | West Wittering \ C \ July1919 Scan5 | |
| Low tension wiring specifications for a 40/50 HP chassis. | 17th Jul 1919 | West Wittering \ C \ July1919 Scan6 | |
| The starter motor being too low on a 40/50 HP chassis, with a proposal to raise it. | 7th Jul 1919 | West Wittering \ C \ July1919 Scan7 | |
| Comparing the merits of Chloride batteries based on seven points of examination. | 21th Jul 1919 | West Wittering \ C \ July1919 Scan8 | |
| Drawing No. LeC.1106 for the 20 HP back axle tube, comparing it to the 40/50 HP model. | 19th Jul 1919 | West Wittering \ C \ July1919 Scan9 | |
| Mr. Royce's design requirements for a 20 HP propeller shaft and torque tube. | 23th Jul 1919 | West Wittering \ C \ July1919 Scan10 | |
| Request for a revised scheme for the 20 HP propeller shaft and torque tube, based on suggestions from Mr. Royce. | 1st Jul 1919 | West Wittering \ C \ July1919 Scan11 | |
| Placement and installation of a temperature recorder for the 40/50 HP chassis. | 23th Jul 1919 | West Wittering \ C \ July1919 Scan12 | |
| The design and modification of the 20 HP rear axle stay. | 1st Jul 1919 | West Wittering \ C \ July1919 Scan13 | |
| Design progress of the 20 HP rear axle, focusing on the torque tube and driving shaft. | 1st Jul 1919 | West Wittering \ C \ July1919 Scan14 | |
| Adjustments to the 20 HP rear axle scheme. | 29th Nov 1919 | West Wittering \ C \ July1919 Scan15 | |
| Drawing Lec.1116 for a washer used to lock bolts on the 20 HP rear axle brake drum flange. | 20th Jan 1919 | West Wittering \ C \ July1919 Scan16 | |
| Scheme for a battery box and its suspension on a 40/50 HP chassis. | 26th Jul 1919 | West Wittering \ C \ July1919 Scan17 | |
| Page detailing instructions for accessing and maintaining a battery box. | 26th Jul 1919 | West Wittering \ C \ July1919 Scan18 | |
| New, cheaper sheet metal fan design for the 20 HP chassis. | 29th Jul 1919 | West Wittering \ C \ July1919 Scan19 | |
| Design points from Mr. Royce concerning the 40/50 HP Magneto Drive and Couplings. | 7th Jan 1919 | West Wittering \ C \ July1919 Scan20 | |
| Design specifics for threads, washers, and the magneto coupling drive. | 1st Jul 1919 | West Wittering \ C \ July1919 Scan21 | |
| Clarifying instructions for the installation of a temperature indicator on a 40/50 HP chassis. | 31th Jul 1919 | West Wittering \ C \ July1919 Scan22 | |
| Trial to increase the pressure of the air pump for the 40/50 chassis. | 7th Jun 1919 | West Wittering \ C \ June1919 Scan0 | |
| Despatch of a faulty 20 HP cylinder casting for modification. | 9th Jun 1919 | West Wittering \ C \ June1919 Scan1 | |
| Agreeing to the use of 895 x 135 Palmer Cord Tyres for the Experimental Chassis. | 11th Jun 1919 | West Wittering \ C \ June1919 Scan2 | |
| Intermittent high rate discharge tests on batteries, reference X.664. | 11th Jun 1919 | West Wittering \ C \ June1919 Scan3 | |
| Test report comparing the performance of various batteries, with tabulated results and analysis. | 11th Jun 1919 | West Wittering \ C \ June1919 Scan4 | |
| Continued page of a report on instrument tests regarding low rate discharge capacity. | 11th Jun 1919 | West Wittering \ C \ June1919 Scan5 | |
| Drawing Lec.1104 for the 20 HP bonnet and radiator, noting modifications and requesting a wooden model. | 16th Jun 1919 | West Wittering \ C \ June1919 Scan6 | |
| Radiator appearance and heat regulation options for the new 20 HP chassis. | 26th Jun 1919 | West Wittering \ C \ June1919 Scan7 | |
| Proposal for a longer wheelbase, converting metric to imperial measurements. | 3rd Jul 1919 | West Wittering \ C \ June1919 Scan8 | |
| Unsatisfactory placement of the thermometer on the dashboard for various steering types. | 25th Jul 1919 | West Wittering \ C \ June1919 Scan9 | |
| Instruction from Mr. Royce to remove the cross webs from the 20 HP Cylinder, as they were deemed unnecessary. | 1st Jun 1919 | West Wittering \ C \ June1919 Scan10 | |
| Standardizing the electrical equipment and instrument board switches for the 40/50 HP car series. | 14th Jun 1919 | West Wittering \ C \ June1919 Scan11 | |
| Request from Mr. Royce to extend the wheelbase of the 20 HP chassis. | 1st Jun 1919 | West Wittering \ C \ June1919 Scan12 | |
| Improvements to car electrical equipment, particularly the use of an earth return system. | 6th Jun 1919 | West Wittering \ C \ June1919 Scan13 | |
| Proposing a design change to the 40/50 HP float-chamber for improved accessibility. | 16th Jun 1919 | West Wittering \ C \ June1919 Scan14 | |
| Manufacturing methods for a new petrol tank suspension on the 40/50 HP chassis. | 1st Jun 1919 | West Wittering \ C \ June1919 Scan15 | |
| Instructions for machining a tube extension and manufacturing a corresponding nut from sheet brass. | 30th Jun 1919 | West Wittering \ C \ June1919 Scan16 | |
| Logistics and sourcing of Exide batteries for chassis being shipped to America. | 3rd Jul 1919 | West Wittering \ C \ June1919 Scan17 | |
| Specifications for a jack, requesting a shorter version of the Michelin jack. | 30th Jun 1919 | West Wittering \ C \ June1919 Scan18 | |
| Redesign and lightening of the 20 HP rear axle, including reducing the driving shaft diameter. | 4th Jun 1919 | West Wittering \ C \ June1919 Scan19 | |
| Scheme to prepare forgings and order necessary ball bearings for hubs. | 6th Jun 1919 | West Wittering \ C \ June1919 Scan20 | |
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