| Description | Date | Identifier | |
| Standardization of parts proposal for the Phantom III model, with no extra tool cost noted. | 25th Nov 1938 | Box 171 \ 2 img341 | |
| Standardisation of Phantom III parts, detailing a cost-saving change to a two-part brazed inner steering column tube. | 27th Oct 1937 | Box 171 \ 2 img342 | |
| Cost estimation and production details for the standardisation of Phantom III parts. | 29th Nov 1938 | Box 171 \ 2 img343 | |
| Standardisation of a Phantom III part, adding extra oil holes to a spring drive centre plate to improve lubrication. | 19th Oct 1937 | Box 171 \ 2 img344 | |
| Drilling additional oil holes in the spring drive centre plate to improve lubrication of cotton duck washers. | 26th Nov 1941 | Box 171 \ 2 img345 | |
| Standardisation of the coupling piece between the dynamo and water pump. | 27th Oct 1937 | Box 171 \ 2 img346 | |
| Cost estimate and production timeline for new dies for a Phantom III frame bracket for an oil cooler. | 1st Nov 1938 | Box 171 \ 2 img347 | |
| Standardisation of parts for front and rear brake drums made in Chromidium. | 14th Oct 1937 | Box 171 \ 2 img348 | |
| Costing and production schedule for a standardised part for the Phantom III 'D' Series chassis. | 14th Oct 1936 | Box 171 \ 2 img349 | |
| Standardisation report for an S.U. high-pressure petrol pump on the Phantom III, intended to prevent vapour lock. | 11th Oct 1937 | Box 171 \ 2 img350 | |
| Estimated cost of new tools for a modification introduced on the 117th chassis in 'C' Series. | 17th Oct 1937 | Box 171 \ 2 img351 | |
| Phantom III standardisation of parts document, replacing baffle washers with plain washers on the servo drive shaft. | 29th Sep 1937 | Box 171 \ 2 img352 | |
| Standardisation of parts proposal for the Phantom III, to be introduced on the 'D' series chassis. | 15th Sep 1936 | Box 171 \ 2 img353 | |
| Modification request to increase the life of a milling cutter, detailing cost and production availability. | 14th Sep 1938 | Box 171 \ 2 img354 | |
| Standardisation of Phantom III brake friction lining made of Ferodo M.R. to increase braking power and reduce squeak. | 4th Oct 1937 | Box 171 \ 2 img355 | |
| Standardisation of parts document for the Phantom III 'D' series chassis production. | 17th Oct 1938 | Box 171 \ 2 img356 | |
| Standardisation of a support guard for the sump filter on a Phantom III. | 24th Nov 1937 | Box 171 \ 2 img357 | |
| Cost and implementation proposal for a production modification involving a sleeve and caps for a chassis. | 21th Nov 1938 | Box 171 \ 2 img358 | |
| Standardisation of parts for the Phantom III, involving the deletion of supporting stays on the Air Silencer. | 29th Dec 1937 | Box 171 \ 2 img359 | |
| Standardisation of parts for the Phantom III, concerning the deletion of supplying a syren. | 8th Sep 1938 | Box 171 \ 2 img360 | |
| Standardisation of parts for adjustable cross steering tubes. | 13th Oct 1937 | Box 171 \ 2 img361 | |
| Standardization of parts proposal for the Phantom III 'E' series chassis. | 1st Jan 1937 | Box 171 \ 2 img362 | |
| Standardisation of a stone-guard for the Phantom III rear brake intermediate shaft. | 3rd Jan 1938 | Box 171 \ 2 img363 | |
| Estimated tool cost and production note for a stone-guard for a rear spring gaiter. | 14th Feb 1935 | Box 171 \ 2 img364 | |
| Standardisation of parts for the Phantom III overdrive gearbox. | 10th Dec 1937 | Box 171 \ 2 img365 | |
| Cost analysis and implementation instructions for introducing an overdrive gearbox on the 'D' series chassis. | 10th Dec 1938 | Box 171 \ 2 img366 | |
| Standardisation of Wraith type front suspension levers for the Phantom III. | 13th Sep 1937 | Box 171 \ 2 img367 | |
| Standardisation of parts for the Phantom III new type front suspension link, including cost estimations. | 20th Sep 1935 | Box 171 \ 2 img368 | |
| Standardisation document for replacing the old pressure feed pump (G.2373) with a new limited compression type (E.5935). | 11th Jan 1916 | Box 171 \ 3 img001 | |
| Standardisation proposal for a pressure feed pump, which is an air pump driven from the distributor shaft. | 14th Sep 1916 | Box 171 \ 3 img002 | |
| Standardisation proposal for the Governor Drive chassis part, including modification details and review comments. | 14th Sep 1916 | Box 171 \ 3 img003 | |
| Standardisation report for an aluminium conical top Zephyr piston with many rings. | 14th Sep 1916 | Box 171 \ 3 img004 | |
| Standardisation of an improved type cross steering tube ball joint. | 21th May 1917 | Box 171 \ 3 img005 | |
| Joggling test results for improved steering joints, recommending their adoption. | 25th Jul 1917 | Box 171 \ 3 img006 | |
| Standardisation of chassis parts for a priming device. | 29th Sep 1917 | Box 171 \ 3 img007 | |
| Standardisation of chassis parts, specifically 895mm x 150mm tyres. | 6th Mar 1919 | Box 171 \ 3 img008 | |
| Standardisation of a Capillary Tube Thermometer for the chassis. | 7th Apr 1919 | Box 171 \ 3 img009 | |
| Recommendation to fit an instrument to record the water temperature on all 40/50 chassis. | 31th Mar 1919 | Box 171 \ 3 img010 | |
| Standardisation document for an oval section pendulum steering lever for the 40/50 chassis, addressing breakages. | 4th Oct 1919 | Box 171 \ 3 img011 | |
| The bumping test and failure analysis of an oval section pendulum steering lever, comparing it to a standard H section lever. | 25th Apr 1917 | Box 171 \ 3 img012 | |
| Standardisation of an 18 Gallon Petrol Tank designed so that rear Shock Absorbers can be fitted. | 25th Aug 1919 | Box 171 \ 3 img013 | |
| Standardisation of an indicator plate for the oil cock. | 4th Oct 1919 | Box 171 \ 3 img014 | |
| Standardisation report for front shock absorbers, coupling tube, and ball end fixed on the axle, due to failures on existing cars. | 25th Aug 1919 | Box 171 \ 3 img015 | |
| Standardisation document for an improved type of Clutch Brake. | 26th Aug 1919 | Box 171 \ 3 img016 | |
| Standardisation of a short connecting rod for the 40/50 chassis to eliminate piston knocks. | 9th Apr 1919 | Box 171 \ 3 img017 | |
| Continued discussion on customer complaints regarding knocks from cast-iron pistons. | 7th Apr 1919 | Box 171 \ 3 img018 | |
| Test report on the successful completion of bench and road tests for X.3400 short connecting rods. | 17th Nov 1919 | Box 171 \ 3 img019 | |
| Standardisation document for a split, oval-ground piston designed for uniform flexibility to eliminate piston knocks. | 22th Nov 1919 | Box 171 \ 3 img020 | |
| The standardisation of split pistons, production delays, and the investigation of an elusive engine knock. | 6th Dec 1919 | Box 171 \ 3 img021 | |
| The performance tests of split type pistons, noting some slight knocking issues. | 18th Nov 1919 | Box 171 \ 3 img022 | |
| Standardisation report for Gleason Skew Bevels for the rear axle, intended to overcome noisy axles. | 15th Jan 1920 | Box 171 \ 3 img023 | |
| Standardisation of an oil gauge that registers up to 30 lbs. | 10th Jan 1920 | Box 171 \ 3 img024 | |
| Standardisation document for a modified type of aluminium split piston. | 20th Jan 1920 | Box 171 \ 3 img025 | |
| The design of a modified type of aluminium split piston, comparing it to the previous version. | 19th Jan 1920 | Box 171 \ 3 img026 | |
| The performance and condition of modified aluminium split pistons after extensive mileage tests. | 8th Apr 1920 | Box 171 \ 3 img027 | |
| Standardisation of Chassis Parts regarding the Radiator and Bonnet being raised one inch higher than standard. | 18th Mar 1920 | Box 171 \ 3 img028 | |
| Extract regarding the implications of raising the radiator and bonnet by 1 inch higher than standard. | 17th Mar 1920 | Box 171 \ 3 img029 | |
| Standardisation of a rear axle casing, changing from M.S. to 3 1/2% N.S. for increased reliability. | 23th Mar 1920 | Box 171 \ 3 img030 | |
| Confirming the adoption of 3 1/2% Nickel steel for the rear axle drop forgings. | 3rd Jan 1920 | Box 171 \ 3 img031 | |
| Laboratory report recommending the use of 3.5% Nickel Steel over Mild Steel for rear axle casings. | 31th Dec 1919 | Box 171 \ 3 img032 | |
| Standardisation of a starter motor drive chain, replacing No.174 with Hans Renolds No.6195. | 31th Mar 1920 | Box 171 \ 3 img033 | |
| Standardisation of chassis parts concerning two extra rings fitted to the pistons. | 14th Apr 1920 | Box 171 \ 3 img034 | |
| Copy of a telegram from Mr. Royce regarding a solution for piston tightness. | 15th Mar 1920 | Box 171 \ 3 img035 | |
| Facts and tests related to piston rattles in various car models. | 13th Feb 1920 | Box 171 \ 3 img036 | |
| Recommendations for rectifying piston rattles by fitting extra rings and considering lubrication oil types. | 6th May 1920 | Box 171 \ 3 img037 | |
| Standardisation of chassis parts for side levers with a straight short brake lever and set speed lever. | 6th May 1920 | Box 171 \ 3 img038 | |
| Trial and approval of new side levers, leading to a proposal for standardisation. | 14th Apr 1920 | Box 171 \ 3 img039 | |
| Modification to slipper clutch for Starter Motor Drive. | 5th May 1920 | Box 171 \ 3 img040 | |
| Issues with the starter motor clutch and proposing a modification to a slipper drive type. | 19th May 1920 | Box 171 \ 3 img041 | |
| Standardisation of oil retaining baffles in rear axle tubes. | 24th May 1920 | Box 171 \ 3 img042 | |
| Standardisation of chassis parts for a petrol filter gauze made of Monel metal wire. | 28th May 1920 | Box 171 \ 3 img043 | |
| Recommendation for using copper-nickel or monel gauzes for petrol filters over copper ones. | 27th May 1920 | Box 171 \ 3 img044 | |
| Standardisation of a chassis part, specifically the bracket for a hand pump. | 28th May 1920 | Box 171 \ 3 img045 | |
| Standardisation of chassis parts, specifically rear shock absorbers. | 28th May 1920 | Box 171 \ 3 img046 | |
| The production, testing, and potential improvements for new rear shock absorbers. | 28th May 1920 | Box 171 \ 3 img047 | |
| Outlining faults found with the first set of rear shock absorbers fitted to a test car for America. | 28th May 1920 | Box 171 \ 3 img048 | |
| Continued memo outlining issues with vehicle components and requesting drawing prints. | 2nd Jun 1940 | Box 171 \ 3 img049 | |
| Providing comments and criticisms on rear shock absorbers. | 31th May 1920 | Box 171 \ 3 img050 | |
| Continued report discussing clearance issues with a connecting tube and shock absorbers, and a recommendation for a castellated nut. | 4th Jun 1920 | Box 171 \ 3 img051 | |
| Standardisation of chassis parts for a clutch operating lever. | 4th Jun 1920 | Box 171 \ 3 img052 | |
| Standardisation of thermostat control for water temperature. | 29th Jun 1920 | Box 171 \ 3 img053 | |
| Results of water flow tests, in gallons per minute, on an engine with and without a thermostat fitted. | 23th Apr 1920 | Box 171 \ 3 img054 | |
| Tests of a car's thermostat control, specifically the design and function of the bye-pass hole in preventing radiator freezing. | 1st Jun 1920 | Box 171 \ 3 img055 | |
| Continued note on engine radiator temperatures and freezing conditions when coasting. | 20th Aug 1920 | Box 171 \ 3 img056 | |
| Standardisation of chassis parts for rear road springs, pre-war thin leaf type. | 20th Aug 1920 | Box 171 \ 3 img057 | |
| Standardisation of a lower gear back axle, changing the ratio from 16 x 52 to 15 x 52. | 20th Aug 1920 | Box 171 \ 3 img058 | |
| Standardisation of a bracket for carrying a luggage grid. | 8th Sep 1920 | Box 171 \ 3 img059 | |
| Recommendation to standardise the bracket for carrying a luggage grid to avoid coachbuilders drilling the frame. | 20th Aug 1920 | Box 171 \ 3 img060 | |
| Standardisation of a flexible split piston for use without cylinder liners. | 30th Jul 1920 | Box 171 \ 3 img061 | |
| Standardisation of a Ferodo wearing strip for the bonnet. | 30th Jul 1920 | Box 171 \ 3 img062 | |
| Standardisation of chassis parts concerning the altered position of oil feed to engine gears. | 30th Jul 1920 | Box 171 \ 3 img063 | |
| Standardisation of a Whittle belt with shorter links to reduce noise. | 4th Oct 1920 | Box 171 \ 3 img064 | |
| Standardisation of a primer cock on an induction pipe without a spring. | 12th Oct 1920 | Box 171 \ 3 img065 | |
| Standardisation document for a sloping base for a magneto and a new clip. | 3rd Nov 1920 | Box 171 \ 3 img066 | |
| Standardisation of a junction for pressure and oil pipes on the dashboard. | 12th Oct 1920 | Box 171 \ 3 img067 | |
| Standardisation of chassis parts to lower the silencer front and rear by .500 inches. | 4th Oct 1920 | Box 171 \ 3 img068 | |
| Insufficient silencer clearance on the 40/50 chassis, recommending it be lowered by .500 inches to prevent vibration and drumming noise. | 1st Oct 1920 | Box 171 \ 3 img069 | |
| Standardisation document for the deletion of shutters in the bonnet. | 18th Nov 1920 | Box 171 \ 3 img070 | |
| Recommendation to delete shutters in bonnets to prevent rattling, improve appearance, and save costs. | 2nd Nov 1920 | Box 171 \ 3 img071 | |
| Letter discussing operational issues with bonnet shutters and recommending they be omitted. | 19th Oct 1920 | Box 171 \ 3 img072 | |
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