| Description | Date | Identifier | |
| Table detailing the particulars of resistances and inductances for primary and secondary Goshawk ignition coils. | 20th May 1925 | Box 45 \ 4 Scan289 | |
| Table detailing the specifications for various coil primary windings. | 21th Aug 1925 | Box 45 \ 4 Scan290 | |
| On fitting an experimental Goshawk coil and the performance of the standard coil it replaced. | 21th Aug 1925 | Box 45 \ 4 Scan291 | |
| Instructions regarding improvements to coil base material and the moulding process. | 15th Sep 1925 | Box 45 \ 4 Scan292 | |
| Comparison of Redmanol and Stabalite materials for manufacturing coil cases. | 29th Jun 1920 | Box 45 \ 4 Scan293 | |
| Instruction on manufacturing Stabalite cases and the liquidation of the Nestolite material manufacturers. | 28th Jun 1920 | Box 45 \ 4 Scan294 | |
| Electrical experimental record sheet for a Tall coil in a 'Nestolite' case, model TN2. | 18th Jun 1924 | Box 45 \ 4 Scan295 | |
| Electrical experimental record sheet for a Tall Coil in a 'Nestolite' case, part number TN1. | 24th Sep 1925 | Box 45 \ 4 Scan296 | |
| The experimental testing of Redmanol encased battery ignition coils. | 23th Sep 1925 | Box 45 \ 4 Scan297 | |
| Use of Redmanol instead of stabalite for coil cases. | 23th Sep 1925 | Box 45 \ 4 Scan298 | |
| Mileage of Freimanol encased coils up to 1st June 1926. | 9th Jun 1926 | Box 45 \ 4 Scan299 | |
| Standardisation of chassis parts, specifically a moulded Redmanol case for an ignition coil. | 31th May 1926 | Box 45 \ 4 Scan300 | |
| Comparing the dimensions and properties of Redmanol and stabalite coil cases. | 21th Jul 1926 | Box 45 \ 4 Scan301 | |
| Instructions for leakage tests of coil-cases moulded in Redmanol. | 30th Aug 1926 | Box 45 \ 4 Scan302 | |
| Instructions for testing electrical leakage on a coated coil-case placed in a heated silica oven. | 29th Jun 1920 | Box 45 \ 4 Scan303 | |
| Instructions for a temperature and voltage leakage test on a coil-case, comparing Stabalite and Redmanol materials. | 29th Jun 1920 | Box 45 \ 4 Scan304 | |
| Test results for leakage in coil cases at various temperatures, with notes on developing a production test. | 29th Jun 1920 | Box 45 \ 4 Scan305 | |
| Testing a case for leakage using electrodes and tin-foils, noting inconsistent results after heating. | 29th Aug 1920 | Box 45 \ 4 Scan306 | |
| Instruction regarding the 'curing' effect of prolonged or repeated heating on Redmanol material. | 29th Jun 1920 | Box 45 \ 4 Scan307 | |
| Re-testing three Elo coil cases after they have been heated in an oven. | 29th Oct 1926 | Box 45 \ 4 Scan308 | |
| Table detailing the specifications for various coil primary windings. | 25th Sep 1929 | Box 45 \ 4 Scan309 | |
| Instruction sheet detailing the investigation of a faulty coil, No. 4554, returned from the Repair department. | 19th May 1927 | Box 45 \ 4 Scan310 | |
| Instructions detailing the testing of an ignition coil to diagnose a fault. | 8th Dec 1924 | Box 45 \ 4 Scan311 | |
| To Mr. Brock regarding the return of three coil cases which passed testing. | 15th Sep 1927 | Box 45 \ 4 Scan312 | |
| Extract detailing Mr. Royce's requirements for the 'Goshawk II' electrical system. | 12th Mar 1921 | Box 45 \ 4 Scan313 | |
| Report of a visit to Messrs Lucas regarding the Goshawk starter motor and switchbox. | 12th Jul 1921 | Box 45 \ 4 Scan314 | |
| Drawing No. LeC.1456 for the 'BOSHAWK II' Switchbox. | 29th Sep 1921 | Box 45 \ 4 Scan315 | |
| Parts list for the 'Goshawk' 11 Switch Box, L&C 1603. | 19th Dec 1921 | Box 45 \ 4 Scan316 | |
| Post-moulding milling and tapping operations on switch body inserts. | 19th Dec 1921 | Box 45 \ 4 Scan317 | |
| The Goshawk II electrical equipment, discussing the placement of the dynamo switch and a size reduction for the ignition switch. | 13th Oct 1921 | Box 45 \ 4 Scan318 | |
| Parts list for the Goshawk II Switch Box. | 15th Oct 1921 | Box 45 \ 4 Scan319 | |
| Parts list detailing drawing numbers, descriptions, materials, and quantities. | 1st Oct 1921 | Box 45 \ 4 Scan320 | |
| Instruction to halt work on the 'Goshawk' II Switch Box, as Mr. Royce has requested it be decreased in size by 10%. | 10th Oct 1921 | Box 45 \ 4 Scan321 | |
| Drawing LeC.1457 for the lettering on the Goshawk II switchbox, to be reduced to 90% of the original size. | 19th Oct 1921 | Box 45 \ 4 Scan322 | |
| Insulation dimensions for 'Goshawk II' electrical fittings, as specified by Mr. Royce. | 20th Oct 1921 | Box 45 \ 4 Scan323 | |
| Redesign of a lighting and ignition switch for the 'Goshawk II'. | 17th Nov 1921 | Box 45 \ 4 Scan324 | |
| Electrical work, component design, and material sourcing for the 'Goshawk II' project. | 21th Nov 1921 | Box 45 \ 4 Scan325 | |
| Instruction sheet accompanying a print for a revised Goshawk switchbox. | 13th Dec 1921 | Box 45 \ 4 Scan326 | |
| Parts list for a 'Goshawk' 11 Switch Box, reference LEC 1503. | 12th Dec 1921 | Box 45 \ 4 Scan327 | |
| Parts lists and progress for the 'Goshawk' 11 Switch Box assembly. | 23th Dec 1921 | Box 45 \ 4 Scan328 | |
| Listing part numbers for a 'Goshawk' 11 Switch Box. | 28th Dec 1921 | Box 45 \ 4 Scan329 | |
| The creation of a brass model of a Switch Box Handle for Mr. Royce's approval. | 12th Dec 1921 | Box 45 \ 4 Scan330 | |
| Extract detailing modifications to the dynamo, switchbox, and distributing board for the Goshawk Competition. | 29th Dec 1921 | Box 45 \ 4 Scan331 | |
| Methods for marking conductors and terminals when detaching the Goshawk II switchbox. | 30th Dec 1921 | Box 45 \ 4 Scan332 | |
| New drawings for a 'Goshawk' 11 Switch Box. | 3rd Mar 1922 | Box 45 \ 4 Scan333 | |
| Inquiring about making the locked ignition switch of the Goshawk switchbox adaptable to the magneto. | 14th Jul 1922 | Box 45 \ 4 Scan334 | |
| Mr. Royce's feedback on the Goshawk ignition keys, steering wheel, and hand brake lever. | 20th Jul 1922 | Box 45 \ 4 Scan335 | |
| Proposing a modification to the Goshawk switch box for magneto ignition. | 21th Jul 1922 | Box 45 \ 4 Scan336 | |
| Replacement of unreliable Lucas ignition switchboxes with Goshawk or Delco parts for the 40/5P model. | 1st Sep 1922 | Box 45 \ 4 Scan337 | |
| The despatch of a Goshawk Ignition switch free of charge. | 9th Sep 1922 | Box 45 \ 4 Scan338 | |
| Telegram received by telephone requesting a switch box for a Goshawk 2 engine. | 26th Sep 1922 | Box 45 \ 4 Scan339 | |
| Telegram received by telephone regarding a Goshawk switchbox and magneto switch operation. | 27th Sep 1922 | Box 45 \ 4 Scan340 | |
| Requested modifications for the Goshawk Ignition & Lighting Switch, with diagrams. | 29th Sep 1922 | Box 45 \ 4 Scan341 | |
| Technical report detailing potential failures and suggested improvements for a switch, its components, and casing. | 29th Sep 1922 | Box 45 \ 4 Scan342 | |
| Postscript detailing a screw failure due to badly formed spring washers and recommending a material and length modification. | 3rd Oct 1922 | Box 45 \ 4 Scan343 | |
| Telegram regarding the quality of switchbox screws and spring washers. | 3rd Oct 1922 | Box 45 \ 4 Scan344 | |
| Modification to the Goshawk 11 switch-box for magneto ignition wiring to prevent tampering. | 4th Oct 1922 | Box 45 \ 4 Scan345 | |
| Suggested improvements to the Goshawk Ignition & Lighting Switch. | 6th Oct 1922 | Box 45 \ 4 Scan346 | |
| Continued memorandum discussing issues with spring washers and a material change for terminal pad screws. | 19th Jul 1917 | Box 45 \ 4 Scan347 | |
| Requesting blueprints and standard insert parts for a Hawk 11 switchbox for magneto ignition. | 13th Oct 1922 | Box 45 \ 4 Scan348 | |
| Blueprint request and parts list for a Goshawk II Switchbox for Magneto Ignition. | 17th Oct 1922 | Box 45 \ 4 Scan349 | |
| Standardisation document detailing a modification to the ignition switch for the Goshawk model. | 25th Oct 1922 | Box 45 \ 4 Scan350 | |
| Fitting of switchboxes for magneto ignition to three specific cars. | 1st Dec 1922 | Box 45 \ 4 Scan351 | |
| Proposal to modify the Goshawk switchbox mounting to allow wiring to be completed at the Derby factory. | 5th Dec 1922 | Box 45 \ 4 Scan352 | |
| New ignition scheme for the Boshawk, using one big and one miniature plug, and a three-position switch. | 19th Jan 1923 | Box 45 \ 4 Scan353 | |
| New method for fixing a switchbox to the instrument board and requesting a modified unit. | 2nd Feb 1923 | Box 45 \ 4 Scan354 | |
| Enquiry about the instrument light switch on the Goshawk. | 13th Apr 1923 | Box 45 \ 4 Scan355 | |
| Serving as a reminder to follow up on the decision to source a permanent switch for the 20 HP instrument board light. | 13th Apr 1923 | Box 45 \ 4 Scan356 | |
| Points for consideration and experiment on dynamo and other electrical equipment. | 30th May 1923 | Box 45 \ 4 Scan357 | |
| Instruction on the required mechanical inspection for the R.R. Goshawk switchbox contacts after assembly and before final testing. | 13th Jun 1923 | Box 45 \ 4 Scan358 | |
| Recurring failures in the Goshawk Switchbox and a reminder for careful inspection. | 29th Aug 1923 | Box 45 \ 4 Scan359 | |
| Instruction note regarding the diagnosis and repair of a faulty switch. | 30th Aug 1923 | Box 45 \ 4 Scan360 | |
| Standardisation document for a chassis part, detailing an alteration to the switch box mounting. | 31th Oct 1923 | Box 45 \ 4 Scan361 | |
| Returning a standardisation sheet with costs filled in for a switch box arrangement. | 5th Nov 1923 | Box 45 \ 4 Scan362 | |
| Response to a works complaint about a sticking gauge light push button, providing blueprints for a bush modification. | 8th Dec 1923 | Box 45 \ 4 Scan363 | |
| Alteration of a switchbox, including the new position functions and wiring considerations for the Klaxon horn. | 17th Dec 1923 | Box 45 \ 4 Scan364 | |
| Experiment testing an alternative connection for the cutout shunt switch on a 20 HP chassis to reduce sparking. | 29th May 1924 | Box 45 \ 4 Scan365 | |
| Questioning the delay in standardizing a new, advantageous switchbox design for 40/50 & 20 HP models. | 10th Nov 1925 | Box 45 \ 4 Scan366 | |
| Switchbox standardisation and the use of dummy instruments for a special job car. | 13th Nov 1925 | Box 45 \ 4 Scan367 | |
| Extract from the minutes of a Sales Conference regarding the supply and carrying of tools for the Goshawk. | 13th Mar 1922 | Box 46 \ 1 Scan001 | |
| The status of tools for a Goshawk 11 chassis. | 14th Mar 1922 | Box 46 \ 1 Scan002 | |
| Requesting a sample tool kit for the Goshawk 11 to plan its storage arrangement on the car. | 27th Apr 1922 | Box 46 \ 1 Scan003 | |
| Contents of the Goshawk 11 tool kit, specifically spanner sizing and a method for flywheel withdrawal. | 30th Jun 1922 | Box 46 \ 1 Scan004 | |
| Suggestion to increase the water pump drive nut size and send a Goshawk II tool kit for approval. | 14th Jul 1922 | Box 46 \ 1 Scan005 | |
| Confirming alterations to nuts for the Goshawk tool kit and the method for withdrawing the friction flywheel. | 14th Jul 1922 | Box 46 \ 1 Scan006 | |
| The Goshawk 11 friction flywheel hub design and withdrawal tooling. | 1st Jul 1922 | Box 46 \ 1 Scan007 | |
| Drawing for the Goshawk spring drive extracting nut for standardisation. | 14th Jul 1922 | Box 46 \ 1 Scan008 | |
| Specifications for the tool equipment for the Goshawk model. | 26th Aug 1922 | Box 46 \ 1 Scan009 | |
| Requirements for a new tool set for the Goshawk 11 project, including specifications for spanners, pliers, and storage. | 11th Sep 1922 | Box 46 \ 1 Scan010 | |
| Note on the design philosophy for tools, stating they must be refined and not rough or clumsy, to match the car's character. | 9th Sep 1922 | Box 46 \ 1 Scan011 | |
| Design of spanners, requesting they be single-ended and for samples to be obtained for inspection. | 2nd Oct 1922 | Box 46 \ 1 Scan012 | |
| The standardisation of spanner designs, referencing drawings and cardboard models. | 10th Oct 1922 | Box 46 \ 1 Scan013 | |
| The design and standardization of a Goshawk sparking spanner. | 24th Oct 1922 | Box 46 \ 1 Scan014 | |
| The contents and material specifications for a model of a tool and spares box for the Goshawk. | 11th Nov 1922 | Box 46 \ 1 Scan015 | |
| The weight of tools and spares for the Goshawk chassis to revise statistics. | 23th Nov 1922 | Box 46 \ 1 Scan016 | |
| The supply and design of a tool bag for the 20HP chassis. | 7th Mar 1923 | Box 46 \ 1 Scan017 | |
| Covering memo forwarding a communication with the Sales department about the 20-HP Car tool box clearance. | 2nd May 1923 | Box 46 \ 1 Scan018 | |
| Tool box clearance and brakeropes catching on projecting tool boxes for the 20-HP car. | 10th Apr 1923 | Box 46 \ 1 Scan019 | |
| Tool box clearance for the 20-HP car's running board. | 10th Apr 1923 | Box 46 \ 1 Scan020 | |
| To expedite a sample set of spanners for Mr. Royce. | 24th May 1923 | Box 46 \ 1 Scan021 | |
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