| Description | Date | Identifier | |
| Design of a framed instrument panel, including dial colours and gauges. | 5th Feb 1929 | Box 105 \ 2 scan0025 | |
| Instrument layout, a proposed buyer's guide, and vehicle design points. | 1st Mar 1929 | Box 105 \ 2 scan0026 | |
| Scheme for grouped instruments on the SS & 20 HP models. | 1st Mar 1929 | Box 105 \ 2 scan0027 | |
| Query about the delayed construction of an instrument board for a Barker Close Coupled Allweather vehicle due to missing instruments. | 29th Apr 1929 | Box 105 \ 2 scan0028 | |
| Obsolete lamps and a proposal to fit new instrument patches to cars 23-EX and 16-G4. | 5th May 1929 | Box 105 \ 2 scan0029 | |
| Continued discussion on improving the shutter control, suggesting a thermostatically controlled version for the S.S. | 7th May 1929 | Box 105 \ 2 scan0030 | |
| The preparation and supply of framed patch instruments for specific car models. | 7th May 1929 | Box 105 \ 2 scan0031 | |
| Surplus lamps, instrument panels, and radiator shutter modifications. | 8th May 1929 | Box 105 \ 2 scan0032 | |
| Production and ordering of instrument panel components for a specific scheme. | 1st May 1929 | Box 105 \ 2 scan0033 | |
| Proposing a modification to fit lugs in a new position on existing instruments. | 9th May 1929 | Box 105 \ 2 scan0034 | |
| Complaints about the difficulty of fixing the K.S. petrol gauge and proposing a temporary solution. | 6th Jun 1930 | Box 105 \ 2 scan0035 | |
| Cost of replacing cracked glass on framed instrument patches and considering a revised design. | 18th Jun 1930 | Box 105 \ 2 scan0036 | |
| Disputing an excessive charge for replacing glass in a framed instrument patch. | 20th Jun 1930 | Box 105 \ 2 scan0037 | |
| Design of the petrol gauge and the installation of instruments on the dashboard. | 1st Jul 1930 | Box 105 \ 2 scan0038 | |
| Suggesting a solution for recurrent cracked glasses in patch instruments on customer's cars. | 4th Feb 1931 | Box 105 \ 2 scan0039 | |
| Arrangement of controls and instruments for the Japan 3 chassis, including component supplier suggestions. | 6th Feb 1931 | Box 105 \ 2 scan0040 | |
| Secret internal memorandum discussing proposed chassis controls and equipment for a 'Japan 3' project. | 2nd Jun 1931 | Box 105 \ 2 scan0041 | |
| Query about a modification to Phantom instrument boards to prevent cracked glass. | 5th Feb 1931 | Box 105 \ 2 scan0042 | |
| Standardisation of patch instrument board glass, proposing a move away from drilled glass with reflectors. | 16th Apr 1931 | Box 105 \ 2 scan0043 | |
| Standardisation of plain glass with stuck-on reflectors for patch instruments to prevent cracking. | 5th Feb 1931 | Box 105 \ 2 scan0044 | |
| Page stamped 'For Repair only', with heavy bleed-through from the reverse side. | 14th Oct 1931 | Box 105 \ 2 scan0045 | |
| Proposal to improve the visibility of dashboard instruments by altering the pivot point of the needles. | 14th Oct 1931 | Box 105 \ 2 scan0046 | |
| Issues with the locating mechanism for Smith instruments on 'U' series 25HP models. | 2nd Jun 1932 | Box 105 \ 2 scan0047 | |
| Deletion of instrument locations on the Smith Patch for the 19-M car. | 14th Jun 1932 | Box 105 \ 2 scan0048 | |
| Introduction of an instrument patch for the 20/25 and 40/50 HP chassis, with a focus on improving instrument lighting. | 7th Dec 1932 | Box 105 \ 2 scan0049 | |
| Instrument board illumination, referencing the 1933 Buick and proposing new designs. | 15th Feb 1933 | Box 105 \ 2 scan0050 | |
| Instrument board illumination, comparing silver versus white lettering for clarity and avoiding dazzle. | 17th Feb 1933 | Box 105 \ 2 scan0051 | |
| Design and features of the instrument board panel for RR & Bentley cars. | 18th Feb 1933 | Box 105 \ 2 scan0052 | |
| Providing feedback on the design of a switchbox and instrument panel, covering mounting, ergonomics, and component selection. | 18th Feb 1933 | Box 105 \ 2 scan0053 | |
| Design and supply of a combined speedometer and tachometer instrument panel from Smith & Sons. | 21th Jun 1933 | Box 105 \ 2 scan0054 | |
| Modifications to new type shock dampers for Phantom & 20/25 models to prevent oil leakage. | 21th Jun 1933 | Box 105 \ 2 scan0055 | |
| Design and functionality of a new carburetter control for 20/25 HP instrument boards. | 29th May 1934 | Box 105 \ 2 scan0056 | |
| Haw Instrument Boards for the 20/25 HP model, requesting to see a sample of the controls. | 31th May 1934 | Box 105 \ 2 scan0057 | |
| New instrument boards for a 20/25 HP vehicle and arranging to see a sample of the controls. | 31th May 1934 | Box 105 \ 2 scan0058 | |
| Proposals for the propeller shaft and universal joints on the 'Kite' chassis. | 16th Dec 1920 | Box 105 \ 2 scan0059 | |
| Continued discussion on design suggestions for various mechanical components, referencing figures 1 through 7. | 15th Dec 1920 | Box 105 \ 2 scan0060 | |
| Design alternatives for propeller shaft assembly, specifically concerning pillar support and tube end attachments. | 15th Dec 1920 | Box 105 \ 2 scan0061 | |
| Design changes to the gearbox, axle universal joint, cylinder head, and pump drives for the 'NE Goshawk II'. | 18th Jan 1921 | Box 105 \ 2 scan0062 | |
| Modifications to the Goshawk II's rear universal joint and propeller shaft. | 20th Jan 1921 | Box 105 \ 2 scan0063 | |
| Continued memo regarding gearbox speed and calculations for pumping on a joint. | 1st Jan 1921 | Box 105 \ 2 scan0064 | |
| Universal joint for the 'Goshawk II', referencing drawing Lec.1334 and a new propeller shaft. | 22th Jan 1921 | Box 105 \ 2 scan0065 | |
| Design revisions for the Goshawk II rear universal joint, referencing specific scheme blueprints. | 1st Feb 1921 | Box 105 \ 2 scan0066 | |
| Design modification to the 'Goshawk' II rear universal joint to prevent an oil leak. | 7th Feb 1921 | Box 105 \ 2 scan0067 | |
| Instructions from Mr. Royce on securing a nose bearing race and specifications for a ratchet locking ring. | 7th Feb 1921 | Box 105 \ 2 scan0068 | |
| Sending an updated print of Schedule 738 for the Goshawk 11 back axle and universal joint. | 16th Feb 1921 | Box 105 \ 2 scan0069 | |
| 'GOSHAWK II' universal joint behind the gearbox, sent with drawing Lec.1363. | 9th Mar 1921 | Box 105 \ 2 scan0070 | |
| Blueprints for the Goshawk II universal joint behind the gearbox. | 10th Mar 1921 | Box 105 \ 2 scan0071 | |
| The design of the rear universal joint for the Goshawk II. | 14th Mar 1921 | Box 105 \ 2 scan0072 | |
| Design details for a wooden model of the Goshawk II sliding universal coupling. | 6th Apr 1921 | Box 105 \ 2 scan0073 | |
| Different design schemes for a rear universal coupling. | 5th Apr 1921 | Box 105 \ 2 scan0074 | |
| Alternative method for retaining a spring and removing bushes from a joint. | 10th Dec 1920 | Box 105 \ 2 scan0075 | |
| Ordering a special cutter for manufacturing teeth on a Goshawk II sliding and universal coupling. | 1st Apr 1921 | Box 105 \ 2 scan0076 | |
| Design modifications for the Goshawk II propeller shaft and coupling, including universal joint and shaft dimension changes. | 4th Apr 1921 | Box 105 \ 2 scan0077 | |
| Arguing against a proposed change to the locking mechanism of an oil screw on a Goshawk 11 universal joint. | 5th Sep 1933 | Box 105 \ 2 scan0078 | |
| Test results for a universal joint showing continued oil leakage despite a vent scheme. | 23th Sep 1921 | Box 105 \ 2 scan0079 | |
| Unresolved issue with oil leakage from universal joints and a proposed solution using grease lubrication. | 5th Oct 1921 | Box 105 \ 2 scan0080 | |
| On universal joint failure on a Goshawk 11 car due to poor lubrication, suggesting an oil pump solution. | 29th Jan 1923 | Box 105 \ 2 scan0081 | |
| Page discussing the weakness of an open propeller shaft due to the need for hand-lubrication. | 31th Jan 1923 | Box 105 \ 2 scan0082 | |
| Maintenance and performance of Goshawk 11 Universal Joints. | 31th Jan 1923 | Box 105 \ 2 scan0083 | |
| Oil leak from the propeller shaft on Goshawk models staining the carpets. | 30th May 1923 | Box 105 \ 2 scan0084 | |
| Oil leak from the propeller shaft on 20-HP cars. | 1st Jun 1923 | Box 105 \ 2 scan0085 | |
| Issue with oil leaking from the propeller shaft and damaging the carpets in 20-HP cars. | 29th May 1923 | Box 105 \ 2 scan0086 | |
| Oil being flung from the Goshawk 11 propeller shaft universal joint. | 1st Jun 1923 | Box 105 \ 2 scan0087 | |
| Unlubricated universal joint on a 20-HP chassis, quoting a report on lubrication schedules and wear. | 5th Jul 1923 | Box 105 \ 2 scan0088 | |
| The problem of lubricators on the rear universal of the 20 HP model being knocked off by coachbuilders, with proposed solutions. | 9th Sep 1923 | Box 105 \ 2 scan0089 | |
| Suggestion to replace the current lubricator with a hexagon plug that can be removed with a spark plug spanner. | 1st Jan 1924 | Box 105 \ 2 scan0090 | |
| Lubricators being knocked off the propeller shaft of the 20HP chassis and a request to test a modification. | 1st Jan 1924 | Box 105 \ 2 scan0091 | |
| Issue with the 20 HP propeller shaft lubricator fouling the battery box and proposing a solution. | 6th Jun 1924 | Box 105 \ 2 scan0092 | |
| Lubrication and oil leakage of the propeller shaft joint, and a proposed solution. | 1st Jul 1924 | Box 105 \ 2 scan0093 | |
| Fitment of an aluminium strip for the lubricator on the 20 HP chassis propellor shaft. | 22th Jul 1924 | Box 105 \ 2 scan0094 | |
| Oil retention issues with 20 HP Universal Joints and proposing leather gaiters as a solution. | 6th Sep 1924 | Box 105 \ 2 scan0095 | |
| Issues and potential cures for over-oiling in 20 HP universal joints. | 8th Sep 1924 | Box 105 \ 2 scan0096 | |
| Conclusion of a report discussing a mechanical joint's oil retention and planned modifications. | 1st Sep 1924 | Box 105 \ 2 scan0097 | |
| Use of oil versus grease in 20 HP universal joints and listing previous design considerations. | 1st Sep 1924 | Box 105 \ 2 scan0098 | |
| Modification to the Goshawk 11 universal joints to fix a clearance issue. | 14th Sep 1923 | Box 105 \ 2 scan0099 | |
| Standardisation of the lubricator on the rear universal joint. | 10th Sep 1924 | Box 105 \ 2 scan0100 | |
| The altered position of the 20 HP rear universal joint lubricator. | 11th Sep 1924 | Box 105 \ 2 scan0101 | |
| Print for a Mechanic universal joint for the Goshawk, noting dimensional differences for brazing pieces. | 9th Jun 1925 | Box 105 \ 2 scan0102 | |
| Performance report on an American Mechanics Joint after extensive road testing over 14,000 miles. | 9th Nov 1926 | Box 105 \ 2 scan0103 | |
| Comparison of the American 'Mechanics Joint' with the company's own, noting its advantages and continued testing on a cardan shaft. | 9th Nov 1926 | Box 105 \ 2 scan0104 | |
| Modifications to a universal joint and propeller shaft, referencing drawing N.sch.2589. | 28th Apr 1928 | Box 105 \ 2 scan0105 | |
| Design and machining of a universal joint, focusing on the assembly of rings and trunnion dimensions. | 19th Jul 1928 | Box 105 \ 2 scan0106 | |
| Standardisation sheet for Mechanics joints on the 20 HP model and its application for the India 1V works. | 17th Dec 1928 | Box 105 \ 2 scan0107 | |
| Query regarding the recommended lubrication interval for propeller shaft universal joints on 20 HP and S.S. chassis. | 13th Aug 1929 | Box 105 \ 2 scan0108 | |
| Recommendation for propeller shaft lubrication intervals for 20 HP and 40/50 HP chassis. | 14th Mar 1929 | Box 105 \ 2 scan0109 | |
| Rear spring safety stops and the comparative risk of propeller shaft failure on various car models. | 24th Jan 1930 | Box 105 \ 2 scan0110 | |
| Urgent and expensive production of 25 HP Propeller Shaft Tubes, Piece No. 54035. | 14th Feb 1930 | Box 105 \ 2 scan0111 | |
| Vibrations at high speeds in the 25 HP model caused by the propeller shaft. | 8th Sep 1930 | Box 105 \ 2 scan0112 | |
| Replacement of a faulty propeller shaft and a request to test the old tube. | 10th Sep 1930 | Box 105 \ 2 scan0113 | |
| Propeller shaft specifications to address vibrations in the 20/25 HP model. | 11th Sep 1930 | Box 105 \ 2 scan0114 | |
| Request to instruct six sets of Propeller Shaft G.54300.A for experimental test purposes on the 20/25-HP Chassis. | 20th Sep 1930 | Box 105 \ 2 scan0115 | |
| Standardisation of a 2.5' propeller shaft for the 25 HP model to prevent whirling. | 17th Oct 1930 | Box 105 \ 2 scan0116 | |
| Standardisation document concerning the fitting of a new part to the 'T' Series chassis. | 4th Feb 1931 | Box 105 \ 2 scan0117 | |
| Propeller shaft whirling issues on a 25 HP model, recommending an increase in shaft diameter. | 16th Mar 1931 | Box 105 \ 2 scan0118 | |
| Agreeing to increase the diameter of the 25HP propeller shaft due to a whirling issue. | 25th Mar 1931 | Box 105 \ 2 scan0119 | |
| Instruction to replace the 20/25 HP propeller shaft sliding joint oiling plug with an Enots lubricator. | 8th Jul 1931 | Box 105 \ 2 scan0120 | |
| Layout of the frame, transmission, and springs for the J.3. model. | 7th Sep 1931 | Box 105 \ 2 scan0121 | |
| Required diameter for propeller shafts to prevent whirling at high RPMs. | 4th Nov 1931 | Box 105 \ 2 scan0122 | |
| Letter from Cadillac Motor Car Company regarding propeller shaft information. | 21th Oct 1931 | Box 105 \ 2 scan0123 | |
| Page discussing shaft balancing tolerances and tube thickness specifications. | 19th Oct 1931 | Box 105 \ 2 scan0124 | |
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