| Description | Date | Identifier | |
| Providing the latest instructions for parts required for the 10-EX car. | 16th Jul 1927 | Box 70 \ 1 scan0145 | |
| Letter discussing the Blue Sports Phantom 10-EX, a meeting in Derby, the health of an acquaintance, and progress on the F.11 aeronautical project. | 12th Jul 1927 | Box 70 \ 1 scan0146 | |
| List of differences between the 10-EX Blue Sports Phantom and the standard chassis. | 7th Dec 1927 | Box 70 \ 1 scan0147 | |
| Development, performance, and marketing of the 'Blue Sports Phantom' 10-EX. | 11th Jul 1927 | Box 70 \ 1 scan0148 | |
| The 10-EX experimental car being disassembled for approximately 10 days for improvements. | 7th Jul 1927 | Box 70 \ 1 scan0149 | |
| Steering column vibrations on the 10-EX model, proposing a stiffer column as a solution. | 2nd Jul 1927 | Box 70 \ 1 scan0150 | |
| Request to convert the 10-EX model to a semi-isolation scheme and for washers for the hydraulic damper. | 1st Jul 1927 | Box 70 \ 1 scan0151 | |
| List of blueprints required to produce a testing rig for auxiliary units. | 5th Jul 1926 | Box 70 \ 1 scan0152 | |
| Outlining modifications and required parts for the 10-EX experimental car. | 18th Nov 1925 | Box 70 \ 1 scan0153 | |
| Requesting clarification on a previous memo concerning a specific car. | 8th Dec 1925 | Box 70 \ 1 scan0154 | |
| Suggestion for mounting a spare wheel on the rear of a sports car, urging the matter be pushed forward. | 12th May 1925 | Box 70 \ 1 scan0155 | |
| Proposed modifications to a Sports Phantom chassis 10 EX to reduce wind resistance. | 1st Jun 1926 | Box 70 \ 1 scan0156 | |
| Proposals to streamline a sports car body for improved performance and reduced wind resistance. | 14th Jun 1926 | Box 70 \ 1 scan0157 | |
| Removal of a non-standard spare wheel carrier and requesting information on fitting headlamps. | 16th Jun 1926 | Box 70 \ 1 scan0158 | |
| Temporary use and availability of the 10-EX sports body car. | 7th Jul 1926 | Box 70 \ 1 scan0159 | |
| Test drive report and critique of the 'Blue Car' (10-EX), detailing steering, performance, and recommendations for improvements. | 12th Jul 1926 | Box 70 \ 1 scan0160 | |
| Proposed wings for a Sports Phantom 10-EX, including coordination with coachbuilders and other design modifications. | 17th Jul 1926 | Box 70 \ 1 scan0161 | |
| Axle track and running board specifications for the Sports Phantom 10-EX chassis. | 20th Jul 1926 | Box 70 \ 1 scan0162 | |
| Modifications for the Sports Phantom 10-EX chassis before it is sent to the coachbuilders. | 3rd Sep 1926 | Box 70 \ 1 scan0163 | |
| Specification of coachwork modifications for a Barker 'CJ' Sports Phantom on chassis 10.EX. | 23th Sep 1926 | Box 70 \ 1 scan0164 | |
| Performance issues and proposed modifications for Phantom experimental models. | 23th Sep 1926 | Box 70 \ 1 scan0165 | |
| The necessity to stiffen a car's scuttle to prevent 'jellying' and creaking around the instrument board. | 25th Sep 1926 | Box 70 \ 1 scan0166 | |
| Development of a 100 M.P.H. Sports Phantom car, focusing on aerodynamic improvements. | 11th Nov 1926 | Box 70 \ 1 scan0167 | |
| Competitor car designs from Sunbeam, Lorraine, and Lancia, and design trends in France. | 17th Nov 1926 | Box 70 \ 1 scan0168 | |
| Proposed modifications to the Sports Phantom chassis to achieve 100 m.p.h. | 17th Nov 1926 | Box 70 \ 1 scan0169 | |
| Letter discussing modifications to the 10-EX car, its performance, and pointed tail design. | 26th Nov 1926 | Box 70 \ 1 scan0170 | |
| Proposed improvements to the 10-EX Blue Semi Sports Car to develop the Phantom model. | 26th Nov 1926 | Box 70 \ 1 scan0171 | |
| Requesting to see a scheme or plan of a proposal. | 29th Nov 1926 | Box 70 \ 1 scan0172 | |
| Modifications to the 10-EX Sports Phantom, specifically concerning the axle ratio and performance. | 29th Nov 1926 | Box 70 \ 1 scan0173 | |
| Development of the Phantom's power and speed, and weighing the merits of a special 100 MPH chassis. | 29th Nov 1926 | Box 70 \ 1 scan0174 | |
| Chassis testing in France and proposed design improvements. | 29th Nov 1926 | Box 70 \ 1 scan0175 | |
| Diagram and description of a camshaft-driven petrol pump with a control float mechanism. | 29th Nov 1926 | Box 70 \ 1 scan0176 | |
| Enquiries for a folding rear windscreen for a 10-EX Phantom car and a cover for the rear seats. | 3rd Dec 1926 | Box 70 \ 1 scan0177 | |
| Ten proposed changes to modernise the Phantom 10EX car, specifically for the coachbuilders. | 3rd Dec 1926 | Box 70 \ 1 scan0178 | |
| List of instructions for modifications to be made to a car's coachwork at Parkers and Barkers. | 3rd Dec 1926 | Box 70 \ 1 scan0179 | |
| Proposed body modifications for the Phantom 10-EX experimental car. | 1st Dec 1926 | Box 70 \ 1 scan0180 | |
| Scheme N.2817, proposing a test of driving vision with a revised seat for a Phantom 10-EX. | 4th Dec 1926 | Box 70 \ 1 scan0181 | |
| Instructions to modernise the Phantom 10-EX chassis regarding steering, pedals, and seating. | 1st Jul 1926 | Box 70 \ 1 scan0182 | |
| Request for Basswood and aluminium to create a 1/8th scale model of the 10 EX 'Blue Car' to clarify the wing design for coachbuilder Barkers. | 4th Dec 1926 | Box 70 \ 1 scan0183 | |
| Copy of a letter to a client regarding car body modifications and associated costs. | 7th Dec 1926 | Box 70 \ 1 scan0184 | |
| List of proposed work including fitting windscreen wipers and headlamp dippers, marked as a copy. | 10th Dec 1926 | Box 70 \ 1 scan0185 | |
| Letter to coachbuilder Barker & Co Ltd discussing design modifications to the wings and body tail for a sports model. | 10th Dec 1926 | Box 70 \ 1 scan0186 | |
| Modifications to the car's body, including rear seats, hood, and headlamps. | 1st Feb 1926 | Box 70 \ 1 scan0187 | |
| List of ten modifications to be made to the coachwork of the Experimental Phantom 10-EX. | 11th Dec 1926 | Box 70 \ 1 scan0188 | |
| Outlining chassis and accessory modifications including the fitting of a new pendulum lever cover and a distant reading petrol gauge. | 11th Dec 1926 | Box 70 \ 1 scan0189 | |
| Seeking clarification on the sourcing of Zeiss headlamps for an Open Touring Phantom Car, 10-EX. | 13th Dec 1926 | Box 70 \ 1 scan0190 | |
| Letter to Messrs. Barkers & Co. Ltd. requesting access to the 'Open Touring Phantom - 10-EX' for chassis modifications. | 13th Dec 1926 | Box 70 \ 1 scan0191 | |
| Letter from coachbuilders Barker & Co. confirming that work has not yet commenced on the 'CJ' Sports 10-EX car. | 14th Dec 1926 | Box 70 \ 1 scan0192 | |
| Letter to Messrs. Barker & Co. Ltd. regarding the collection of car 10-EX. | 15th Dec 1926 | Box 70 \ 1 scan0193 | |
| Alterations to the 10-EX Open Touring Car, focusing on windscreen placement for driver comfort and vision. | 18th Dec 1926 | Box 70 \ 1 scan0194 | |
| The fitting of lamps, a petrol gauge, and an engine rev counter. | 18th Dec 1926 | Box 70 \ 1 scan0195 | |
| Proposed body alterations to the 'Sports Phantom' 10-EX for experimental windage reduction. | 20th Dec 1926 | Box 70 \ 1 scan0196 | |
| With instructions for the Phantom cross steering tube, including making a new part and checking on the status of others. | 21th Dec 1926 | Box 70 \ 1 scan0197 | |
| Modifications and specifications for the Phantom IO EX model. | 22th Dec 1926 | Box 70 \ 1 scan0198 | |
| Steering wheel clearance issues after lowering it on the Sports Car 10 EX model body. | 30th Dec 1926 | Box 70 \ 1 scan0199 | |
| Alterations to the instrument board of the 10-EX Sports Phantom, including a sketch of a gauge. | 30th Dec 1926 | Box 70 \ 1 scan0200 | |
| Barkers' design blueprint, excessive charges, and a suggestion for a disappearing hood. | 30th Dec 1926 | Box 70 \ 1 scan0201 | |
| Instructions for modifications to be carried out on the 10-EX car. | 30th Dec 1926 | Box 70 \ 1 scan0202 | |
| Short memo confirming the arrangement to fit headlamp brackets. | 30th Dec 1926 | Box 70 \ 1 scan0203 | |
| Alterations to the 10-EX sports body and the associated high cost estimate from coachbuilder Barkers. | 31th Dec 1926 | Box 70 \ 1 scan0204 | |
| Technical memorandum discussing the modifications required to fit a concealed or enclosed hood to an existing car body. | 1st Jan 1927 | Box 70 \ 1 scan0205 | |
| Car modifications including the drive, ignition, instrument board, and hood, with a note about a visit to Barkers. | 1st Jan 1927 | Box 70 \ 1 scan0206 | |
| Supply of Zeiss headlamps and a full-scale drawing for the 10-EX model. | 2nd Jan 1927 | Box 70 \ 1 scan0207 | |
| Wheel clearance, an adapter, and arrangements for the 10-EX car. | 3rd Jan 1927 | Box 70 \ 1 scan0208 | |
| Arranging a meeting to discuss the 10-EX car at Barkers, Olaf Street. | 4th Jan 1927 | Box 70 \ 1 scan0209 | |
| Letter regarding alterations to the 10.EX. Sports Body. | 4th Jan 1927 | Box 70 \ 1 scan0210 | |
| Letter to coachbuilder Barker & Co. regarding the high cost of alterations for an experimental car. | 4th Jan 1927 | Box 70 \ 1 scan0211 | |
| Price reduction from Barker's and clarifying specification discrepancies for a 10.EX. Sports Body. | 10th Jan 1927 | Box 70 \ 1 scan0212 | |
| Letter to Messrs Barker & Co. Ltd. confirming a price reduction to £270 for finishing a 'C.J' Sports car. | 10th Jan 1927 | Box 70 \ 1 scan0213 | |
| Requesting the preparation of parts for a new front axle control and rear axle gears for a car. | 2nd Feb 1927 | Box 70 \ 1 scan0214 | |
| Letter to coachbuilders Barkers inquiring about the build status of the 10-EX car. | 8th Feb 1927 | Box 70 \ 1 scan0215 | |
| The impact of a new axle on the front track and wings for model 10-EX. | 2nd Feb 1927 | Box 70 \ 1 scan0216 | |
| Letter from coachbuilder Barker & Co. regarding the progress of work on a 'CJ' Sports 10-EX and awaiting instructions for the front wings. | 9th Feb 1927 | Box 70 \ 1 scan0217 | |
| Copy of a letter from Barkers Coachbuilders regarding progress on the 'CJ' Sports 10-EX car. | 9th Feb 1927 | Box 70 \ 1 scan0218 | |
| Requesting several modifications for the 10-EX car, including a new lever, fan pulley, and damper adjustments. | 11th Feb 1927 | Box 70 \ 1 scan0219 | |
| Forwarding a letter from Messrs. Barkers and requesting the expedition of wings for the 10-EX car. | 10th Feb 1927 | Box 70 \ 1 scan0220 | |
| Front track width, wheel lean, wing width, and tyre specifications for vehicle 10-EX. | 15th Feb 1927 | Box 70 \ 1 scan0221 | |
| Manufacture and dispatch of a central bolt for a spare wheel carrier for car 10-EX. | 16th Feb 1927 | Box 70 \ 1 scan0222 | |
| Proposing the fitting of Hartford shock dampers to the front axle of the 10-EX model. | 2nd Feb 1927 | Box 70 \ 1 scan0223 | |
| Letter to Barkers Ltd. Coachbuilders requesting a delivery date for Experimental Car 10-EX. | 26th Feb 1927 | Box 70 \ 1 scan0224 | |
| Letter from coachbuilder Barker & Co. regarding the collection of a 'CJ' Sports 10-EX car. | 28th Feb 1927 | Box 70 \ 1 scan0225 | |
| Testing the coachwork and arranging the collection of car 10.EX. | 15th Mar 1927 | Box 70 \ 1 scan0226 | |
| The collection of car 10-EX from Barkers and the subsequent assessment of its modified seating position. | 16th Mar 1927 | Box 70 \ 1 scan0227 | |
| Letter to coachbuilders Barkers about the collection of the finished 10-EX car. | 16th Mar 1927 | Box 70 \ 1 scan0228 | |
| Letter from coachbuilders Barker & Co. regarding the delivery of a 'CJ' Sports 10-EX car. | 17th Mar 1927 | Box 70 \ 1 scan0229 | |
| Feedback from a road test, highlighting issues with the scuttle and steering at high speed. | 18th Mar 1927 | Box 70 \ 1 scan0230 | |
| Sending an employee to coachbuilder Barkers to test improvements on the 10-EX car. | 21th Mar 1927 | Box 70 \ 1 scan0231 | |
| Modifications to a car's scuttle and front wings following a test drive. | 24th Mar 1927 | Box 70 \ 1 scan0232 | |
| Telegram received by telephone requesting to fetch a sports car from Barkers. | 8th Apr 1927 | Box 70 \ 1 scan0233 | |
| Letter to Messrs. Barkers regarding the collection of a Phantom Sports car 10-EX. | 8th Apr 1927 | Box 70 \ 1 scan0234 | |
| List of modifications and updates for the 10 EX Sports experimental car. | 9th Apr 1927 | Box 70 \ 1 scan0235 | |
| Petrol requisition form from Barker & Co. (Coachbuilders) Ltd. for car 10EX. | 9th Apr 1927 | Box 70 \ 1 scan0236 | |
| List of spares and accessories received with chassis 10 EX by coachbuilder Barker & Co. | 9th Apr 1927 | Box 70 \ 1 scan0237 | |
| Modifications and performance expectations for the 10-EX and EAC-7 cars. | 20th Apr 1927 | Box 70 \ 1 scan0238 | |
| Alterations and performance tests for the 10-EX car, focusing on the body and suspension. | 20th Apr 1927 | Box 70 \ 1 scan0239 | |
| Modifications to a vehicle's suspension, steering, and a list of remaining work. | 25th Apr 1927 | Box 70 \ 1 scan0240 | |
| Summary of proposed alterations for the 10-EX car specification. | 25th Apr 1927 | Box 70 \ 1 scan0241 | |
| List of vehicle modifications for the tank, axle, and steering, with notes on future road testing and lubrication. | 29th Apr 1927 | Box 70 \ 1 scan0242 | |
| Rationale and development of the 10-EX Sports Model chassis. | 29th Apr 1927 | Box 70 \ 1 scan0243 | |
| Request to redesign car steps provided by Barkers to better suit the streamline nature of the body. | 1st May 1927 | Box 70 \ 1 scan0244 | |
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