| Description | Date | Identifier | |
| Note detailing the weights of a standard chassis float and two Packard car models. | 20th Apr 1920 | Box 127 \ 1 scan0093 | |
| Comparison of the turning evenness between a 12-cylinder Packard camshaft and a standard 6-cylinder camshaft. | 20th Apr 1920 | Box 127 \ 1 scan0094 | |
| Investigation into the cause of engine rattles, focusing on the camshaft wheel and timing gears. | 20th Apr 1920 | Box 127 \ 1 scan0095 | |
| Test drive report on Lord Rocksavage's chassis after modifications, detailing performance figures and a comparison with a Packard. | 7th May 1920 | Box 127 \ 1 scan0096 | |
| Critical assessment of a car's engine performance and its cramped 12-cylinder design. | 24th Jul 1921 | Box 127 \ 1 scan0097 | |
| On the bench testing and adjustment of a Bijur dynamo and regulator for a Packard car. | 12th May 1920 | Box 127 \ 1 scan0098 | |
| Comparative report on the safety of Stanwell, Goodyear, and Firestone demountable rims during high-speed tests with a deflated tyre. | 19th May 1920 | Box 127 \ 1 scan0099 | |
| Instructions detailing the replacement of a broken ballast wire in a Delco ignition coil on a Packard car. | 15th Jun 1920 | Box 127 \ 1 scan0100 | |
| Horsepower and consumption test data for a 12-cylinder Packard engine using a 50% Benzol fuel mix. | 25th Jun 1920 | Box 127 \ 1 scan0101 | |
| Test results and analysis of a Packard 12-cylinder engine, including performance data at various RPMs. | 25th Jun 1920 | Box 127 \ 1 scan0102 | |
| Continued report on engine horsepower tests across different gears and notes on the Packard engine's ignition system. | 25th Jun 1920 | Box 127 \ 1 scan0103 | |
| Test report on engine spark ignition timing at various speeds, including a comparison to a Packard car. | 25th Jun 1920 | Box 127 \ 1 scan0104 | |
| Ignition timing settings and analysis of a Packard clutch system. | 25th Jun 1922 | Box 127 \ 1 scan0105 | |
| Problems of using copper tubes in radiators versus the more reliable brass tubes. | 29th Jul 1920 | Box 127 \ 1 scan0106 | |
| Examination of the Packard car's petrol tank reserve compartment, with a diagram and discussion of its design flaws. | 1st Aug 1920 | Box 127 \ 1 scan0107 | |
| Extract discussing in-house designed components and the weight of the 40/50 HP chassis. | 7th Sep 1920 | Box 127 \ 1 scan0108 | |
| Vehicle weight reduction, component comparison with Packard, and material supply issues with steel castings. | 9th Sep 1920 | Box 127 \ 1 scan0109 | |
| The evaluation of Gabriel Snubbers shock absorbers fitted to a 12-cylinder Packard car. | 8th Nov 1920 | Box 127 \ 1 scan0110 | |
| Impressions from short test runs of Hispano-Suiza, Napier, Lanchester, and Packard cars at the Olympia Show. | 11th Nov 1920 | Box 127 \ 1 scan0111 | |
| Comparative road test report on Napier, Lanchester, and Packard cars against a Rolls Royce standard. | 11th Nov 1920 | Box 127 \ 1 scan0112 | |
| The performance of a Packard engine, noting difficulty in starting and the presence of a 'Fueliser' device. | 11th Nov 1920 | Box 127 \ 1 scan0113 | |
| Clutch plate wear on a Packard and the design for a new 'Goshawk' single-plate clutch. | 23th Nov 1920 | Box 127 \ 1 scan0114 | |
| Examination of a Packard clutch plate and gearbox, comparing it to other American and Hawk-Northcliffe clutches. | 6th Dec 1920 | Box 127 \ 1 scan0115 | |
| Disposal of two Buick cars and a Packard car. | 1st Jan 1921 | Box 127 \ 1 scan0116 | |
| Sourcing a suitable 6-volt Willard battery for a 12-cylinder Packard car. | 13th Jan 1921 | Box 127 \ 1 scan0117 | |
| Prices and conditions of second-hand American cars for sale. | 26th Jan 1921 | Box 127 \ 1 scan0118 | |
| Instruction note regarding a Willard battery received from stores for a Packard Car. | 1st Feb 1921 | Box 127 \ 1 scan0119 | |
| Sale and disposal of various car bodies and chassis, including a 5.EX Landaulet. | 21th Sep 1921 | Box 127 \ 1 scan0120 | |
| Typed memo requesting the delivery of the Essex and Packard cars. | 4th Oct 1921 | Box 127 \ 1 scan0121 | |
| Correspondence regarding the disposal of a Packard car and the sale of an old Buick car. | 19th Oct 1921 | Box 127 \ 1 scan0122 | |
| Listing attached particulars for a Packard 12-cylinder car, a Buick car, and an Experimental Car. | 29th Oct 1921 | Box 127 \ 1 scan0123 | |
| Specification sheet detailing the particulars of a Packard car. | 10th Dec 1920 | Box 127 \ 1 scan0124 | |
| Comparing the 27 HP Packard with the Goshawk model, discussing engine size, weight, and performance. | 17th Nov 1922 | Box 127 \ 1 scan0125 | |
| Query about the disadvantages of the Packard straight-eight engine compared to a 6-cylinder model. | 9th Sep 1926 | Box 127 \ 1 scan0126 | |
| Request to obtain an 8-cylinder Packard car for an extended test. | 29th Oct 1926 | Box 127 \ 1 scan0127 | |
| Letter concerning difficulty in arranging the loan of an 8 Cylinder Packard and offering a Lincoln car as an alternative. | 5th Nov 1926 | Box 127 \ 1 scan0128 | |
| Request to arrange a trial run on an 8-cylinder Packard car for possible purchase. | 8th Nov 1926 | Box 127 \ 1 scan0129 | |
| Letter from Rolls-Royce of America discussing known issues with the Packard 8 Engine. | 11th Nov 1926 | Box 127 \ 1 scan0130 | |
| Comparing the Packard straight-eight engine to another manufacturer's engine, discussing smoothness, carburation, and engine balance. | 11th Nov 1926 | Box 127 \ 1 scan0131 | |
| Request for information regarding a trial run on a Packard Straight-8 car. | 16th Nov 1926 | Box 127 \ 1 scan0132 | |
| Brief typed memo regarding the Packard Straight-8 engine. | 17th Nov 1926 | Box 127 \ 1 scan0133 | |
| Short typed memo arranging for a Packard to be available. | 18th Nov 1926 | Box 127 \ 1 scan0134 | |
| Request regarding a trial run for a Packard Straight-8 car to West Wittering. | 19th Nov 1926 | Box 127 \ 1 scan0135 | |
| Arranging for a Packard Straight-8 car for a run to West Wittering. | 22th Nov 1926 | Box 127 \ 1 scan0136 | |
| The test results and critique of a Packard Straight 8 car and its engine in comparison to the company's own 6-cylinder models. | 25th Nov 1926 | Box 127 \ 1 scan0137 | |
| Features and performance of the Packard Straight 8 engine. | 30th Nov 1926 | Box 127 \ 1 scan0138 | |
| Containing comments received on the Packard 8-cylinder engine and other straight-eight cars. | 1st Dec 1926 | Box 127 \ 1 scan0139 | |
| Technical comparison of straight-eight and six-cylinder engine balance, performance and noise. | 3rd Dec 1926 | Box 127 \ 1 scan0140 | |
| Road performance and engine comparison test report for a Packard 8-cylinder vehicle. | 3rd Dec 1926 | Box 127 \ 1 scan0141 | |
| Technical evaluation of a vehicle's engine roughness, steering stability, and braking performance. | 3rd Dec 1926 | Box 127 \ 1 scan0142 | |
| Continuation of a test report critiquing the clutch, suspension, and single-point lubrication system. | 12th Mar 1926 | Box 127 \ 1 scan0143 | |
| Merits of the 6-cylinder Phantom engine versus competitor 8 and 12-cylinder engines. | 12th Mar 1926 | Box 127 \ 1 scan0144 | |
| Explosions in the exhaust and clarifying the American term 'cracked' throttle in relation to a Packard Eight test. | 24th Dec 1926 | Box 127 \ 1 scan0145 | |
| Letter from Packard Motor Car Company discussing carburettor design, performance, and resolutions to issues like 'spitting back'. | 10th Dec 1926 | Box 127 \ 1 scan0146 | |
| Letter from J.G. Vincent discussing engine idling, carburettors, vibration dampers, and chassis lubrication. | 10th Dec 1926 | Box 127 \ 1 scan0147 | |
| Letter from the American to the British office clarifying the specifications of the latest Packard 8 model. | 27th Dec 1926 | Box 127 \ 1 scan0148 | |
| Letter from Maurice Olley discussing performance issues with a new model, including intake roar and steering feel. | 27th Dec 1926 | Box 127 \ 1 scan0149 | |
| Chassis length and bonnet shortening for an eight-cylinder car. | 29th Dec 1926 | Box 127 \ 1 scan0150 | |
| Letter discussing the eight-cylinder engine and the growing market for smaller, refined cars due to traffic congestion. | 29th Dec 1926 | Box 127 \ 1 scan0151 | |
| Car chassis design, engine configurations, and body space considerations. | 29th Dec 1926 | Box 127 \ 1 scan0152 | |
| V-8 engine design, considering bonnet width, valve gear, and comparisons with a Packard 8 engine. | 6th Jan 1927 | Box 127 \ 1 scan0153 | |
| Modifying a Phantom with a 14-tooth axle to match the hill-climbing performance of a Packard for a potential sale. | 6th Jan 1927 | Box 127 \ 1 scan0154 | |
| Comparing the 40/50 HP model's low axle ratio performance against a Packard, discussing displacement, acceleration, and weight. | 8th Jan 1927 | Box 127 \ 1 scan0155 | |
| Arranging tests at Brooklands Track for a Packard straight-8 car and an open trials car. | 1st Aug 1927 | Box 127 \ 1 scan0156 | |
| Letter to Barkers coachbuilders requesting a Packard instruction book and enquiring about a Lancia. | 6th Sep 1927 | Box 127 \ 1 scan0157 | |
| Trial of a Packard straight-8 engine and delaying a car purchase until after the Olympia Show. | 1st Sep 1927 | Box 127 \ 1 scan0158 | |
| Testing the latest Packard 8-cylinder car and observing updates on the 1928 chassis. | 1st Sep 1927 | Box 127 \ 1 scan0159 | |
| Letter from coachbuilder Barker & Co. regarding an instruction book for a Packard Chassis and a potential Lancia bargain. | 7th Sep 1927 | Box 127 \ 1 scan0160 | |
| Purchase of competitor cars for trial runs and analysis. | 17th Oct 1927 | Box 127 \ 1 scan0161 | |
| Suggesting improvements to bumper bars and spring shackles based on observations at a Motor Show. | 1st Jan 1933 | Box 127 \ 1 scan0162 | |
| Drawing of a Packard 8 manifold with dimensional annotations and comparative engine data. | 1st Dec 1928 | Box 127 \ 1 scan0163 | |
| Forwarding an attached report concerning a Packard Car. | 15th Sep 1931 | Box 127 \ 1 scan0164 | |
| Technical review and driving impression of a Packard Saloon car. | 11th Sep 1931 | Box 127 \ 1 scan0165 | |
| Car's performance, discussing ignition, suspension, steering, frame, and pricing. | 14th Sep 1931 | Box 127 \ 1 scan0166 | |
| Test drive and review of a Packard car, focusing on its shock absorbers, gearbox, and engine performance. | 14th Sep 1931 | Box 127 \ 1 scan0167 | |
| Observations of Packard's engine and gear production methods. | 10th Feb 1932 | Box 127 \ 1 scan0168 | |
| Engine design features including crankcase material, dampers, and cylinder angle. | 26th Jan 1934 | Box 127 \ 1 scan0169 | |
| Letter to F.L. Manning of Barker & Co. regarding the accessibility of a Packard engine's crankshaft damper for an experiment. | 26th Jan 1934 | Box 127 \ 1 scan0170 | |
| Letter from the Experimental Department to F.L. Manning of Barker & Co. arranging a meeting concerning a Packard. | 30th Jan 1934 | Box 127 \ 1 scan0171 | |
| Arranging to borrow a Packard car to carry out tests with the crank damper removed. | 31th Jan 1934 | Box 127 \ 1 scan0172 | |
| Thank you letter for the loan of a Packard Car for testing, detailing brake issues found. | 2nd Feb 1934 | Box 127 \ 1 scan0173 | |
| Test on a Packard Straight Eight engine and a request for information on Cadillac V.8 and Straight 8 engines. | 5th Feb 1934 | Box 127 \ 1 scan0174 | |
| Straight 8 crankshaft vibrations, comparing performance with and without a damper on a Packard car. | 5th Feb 1934 | Box 127 \ 1 scan0175 | |
| Engine crankshafts, bearing configurations, and resolving brake judder issues. | 9th Feb 1934 | Box 127 \ 1 scan0176 | |
| From Sg to Hs/Rm regarding the acquisition of a 12-Cylinder Packard, focusing on the feature of independent front springing. | 11th May 1934 | Box 127 \ 1 scan0177 | |
| Letter from Leonard Williams & Co. Ltd. regarding the suspension on a Packard 12-cylinder chassis. | 10th May 1934 | Box 127 \ 1 scan0178 | |
| Comparison between a 12-cylinder Packard and a 12-cylinder Cadillac, concluding the Cadillac is the superior model to benchmark. | 12th May 1934 | Box 127 \ 1 scan0179 | |
| Letter to Packard Engineering requesting technical details on the suspension of their 8-cylinder model. | 7th May 1934 | Box 127 \ 1 scan0180 | |
| Letter from Packard Motor Car Company providing spring rate and shock absorber information for the Super Eight model. | 13th Jul 1934 | Box 127 \ 1 scan0181 | |
| Letter from Packard Motor Car Company regarding riding qualities and oil lubricated shackles. | 13th Jul 1934 | Box 127 \ 1 scan0182 | |
| Table detailing metering and spring load specifications for shock absorber valves. | 13th Jul 1934 | Box 127 \ 1 scan0183 | |
| Private memo regarding the arrangement to view a 12-cylinder Packard for an Aero Show. | 2nd Nov 1934 | Box 127 \ 1 scan0184 | |
| Arrangements to test drive a 12-cylinder Packard car in Paris. | 5th Nov 1934 | Box 127 \ 1 scan0185 | |
| From Sg. to Hs. requesting the date for a trip to the Paris Show regarding a 12 Cylinder Packard. | 15th Nov 1934 | Box 127 \ 1 scan0186 | |
| Note arranging for a trial of a 12-cylinder Packard car in Paris. | 17th Nov 1934 | Box 127 \ 1 scan0187 | |
| Internal memorandum regarding a run on a 12-cylinder Packard. | 17th Nov 1934 | Box 127 \ 1 scan0188 | |
| Difficulties in arranging a test of a 12-cylinder Packard car. | 21th Feb 1934 | Box 127 \ 1 scan0189 | |
| Requesting a report and comparison of a 12-Cylinder Packard with Spectre following a trial in Paris. | 1st Dec 1934 | Box 127 \ 1 scan0190 | |
| Arrangement to test a 12-cylinder Packard in Paris once it becomes available. | 4th Dec 1934 | Box 127 \ 1 scan0191 | |
| To G.W. Hancock regarding the trial of a 12 cyl. Packard car. | 4th Dec 1934 | Box 127 \ 1 scan0192 | |
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