| Description | Date | Identifier | |
| Arranging a meeting with Messrs. Woodheads regarding the modification of rear springs. | 21th May 1920 | Box 42 \ 3 Scan101 | |
| Status update on the production and dispatch of rear springs from supplier Jonas Woodhead & Sons Ltd. | 1st Jun 1920 | Box 42 \ 3 Scan102 | |
| The testing of rear road springs without nibs and slots, detailing cracking failures after a bump rig test and squeaking during an on-car trial. | 1st Jun 1920 | Box 42 \ 3 Scan103 | |
| Spring bedding issues and testing new spring modifications with Ferodo strips. | 3rd Jun 1920 | Box 42 \ 3 Scan104 | |
| The material supply for laminated rear springs from the supplier Jonas Woodhead & Sons Ltd. | 7th Jun 1920 | Box 42 \ 3 Scan105 | |
| Retrofitting of shock dampers versus perfecting the springs and springing on existing cars. | 8th Jun 1920 | Box 42 \ 3 Scan106 | |
| Visit report to supplier Jonas Woodhead & Sons Ltd. concerning the production and testing of front and rear springs. | 14th Jun 1920 | Box 42 \ 3 Scan107 | |
| Proposal for Woodhead's to test repaired and re-built springs. | 14th Jun 1920 | Box 42 \ 3 Scan108 | |
| Visit from Jonas Woodhead & Sons Ltd. to discuss rear and front spring design and supply. | 18th Jun 1920 | Box 42 \ 3 Scan109 | |
| Order for rear springs of 2000 and 2100 poundage and requesting two additional springs to be produced to drawing N.391. | 16th Jul 1920 | Box 42 \ 3 Scan110 | |
| Correspondence regarding an order for road springs for Rolls-Royce of America Inc., noting delays and pattern issues for rear springs. | 6th Aug 1920 | Box 42 \ 3 Scan111 | |
| Discussion on reverting to a pre-war design for rear road springs and the approval of a new spring clip. | 11th Aug 1920 | Box 42 \ 3 Scan112 | |
| Confirming the manufacturing details of chassis front springs from Jonas Woodhead & Sons Ltd. | 18th Aug 1920 | Box 42 \ 3 Scan113 | |
| Design and manufacturing of chassis rear road springs. | 19th Aug 1920 | Box 42 \ 3 Scan114 | |
| Cover note forwarding correspondence with Jonas Woodhead & Sons Ltd. regarding rear springs for print F.7973. | 6th Sep 1920 | Box 42 \ 3 Scan115 | |
| Letter to supplier Jonas Woodhead & Sons Ltd. regarding the specifications, delivery, and pricing for rear springs. | 2nd Sep 1920 | Box 42 \ 3 Scan116 | |
| Letter to Jonas Woodhead & Sons Ltd. regarding the preference for box pattern clips for new pattern (F7973) rear springs. | 2nd Sep 1920 | Box 42 \ 3 Scan117 | |
| Letter from supplier Jonas Woodhead & Sons Ltd. regarding the specifications of rear springs. | 3rd Sep 1920 | Box 42 \ 3 Scan118 | |
| Correspondence with Jonas Woodhead & Sons Ltd. regarding a preference for a pre-war form of parabolic shearing for rear springs. | 8th Sep 1920 | Box 42 \ 3 Scan119 | |
| Claim from Jonas Woodhead & Sons, Ltd. for specially made rear and front springs and associated costs. | 17th Sep 1920 | Box 42 \ 3 Scan120 | |
| Correcting the quantity of rear springs delivered by Jonas Woodhead & Sons Ltd and the updated total cost. | 22th Sep 1920 | Box 42 \ 3 Scan121 | |
| Agreeing to an extra payment of £150 to Jonas Woodhead & Sons Ltd. for experimental springs. | 4th Oct 1920 | Box 42 \ 3 Scan122 | |
| Copy of a letter from J. Woodhead & Sons Ltd. regarding a new rear spring sent for inspection. | 15th Oct 1920 | Box 42 \ 3 Scan123 | |
| Testing of rustless chassis springs from Jonas Woodhead & Sons Ltd. | 21th Oct 1920 | Box 42 \ 3 Scan124 | |
| Querying future design specifications for chassis front springs on behalf of supplier Jonas Woodhead & Sons Ltd. | 21th Oct 1920 | Box 42 \ 3 Scan125 | |
| Specifications for front and rear chassis springs in response to a letter from Messrs Woodhead. | 22th Nov 1920 | Box 42 \ 3 Scan126 | |
| Objecting to a sample from Messrs. Woodhead showing riveting instead of bolts for fastening clips to spring plates, citing strength issues. | 12th Nov 1920 | Box 42 \ 3 Scan127 | |
| Comparing the cost implications of revised prices for different road spring patterns from Jonas Woodhead & Sons Ltd. | 17th Nov 1920 | Box 42 \ 3 Scan128 | |
| Use of square versus round edge steel for chassis springs with supplier Jonas Woodhead & Sons. | 26th Nov 1920 | Box 42 \ 3 Scan129 | |
| Letter from a supplier discussing the material for front and rear springs, offering a cost saving and declining a request to use flat material. | 25th Nov 1920 | Box 42 \ 3 Scan130 | |
| Communication regarding instructions given to Jonas Woodhead & Sons Ltd. for chassis front and rear springs. | 30th Nov 1920 | Box 42 \ 3 Scan131 | |
| Letter to a supplier discussing the material specifications for front and rear springs and authorising production. | 30th Nov 1920 | Box 42 \ 3 Scan132 | |
| Confirming an agreement with Jonas Woodhead & Sons to change the material for rear springs to round edge, slightly concave. | 3rd Dec 1920 | Box 42 \ 3 Scan133 | |
| Despatch and testing of Rustless Chassis Springs from supplier Jonas Woodhead & Sons Ltd. | 15th Feb 1921 | Box 42 \ 3 Scan134 | |
| Laboratory analysis comparing the chemical composition of an American spring and a Woodhead's spring. | 11th Aug 1921 | Box 42 \ 3 Scan135 | |
| Heat treatment issues for front and rear road springs with supplier Woodheads and proposing alternative suppliers. | 5th Oct 1921 | Box 42 \ 3 Scan136 | |
| Notification regarding short Centre Bolts for Goshawk II Front Springs, requiring temporary replacements. | 18th Oct 1921 | Box 42 \ 3 Scan137 | |
| Requirement for various nuts and bolts for the Goshawk II front and rear springs. | 18th Oct 1921 | Box 42 \ 3 Scan138 | |
| The testing of Woodhead springs with recommendations for poundages and future use. | 2nd Feb 1922 | Box 42 \ 3 Scan139 | |
| Copy of a letter from J. Woodhead & Sons Ltd. regarding a set of springs sent for a bumping test. | 6th Feb 1922 | Box 42 \ 3 Scan140 | |
| Query regarding the test results for galvanised front springs supplied by Jonas Woodhead & Sons Ltd. | 21th Jun 1922 | Box 42 \ 3 Scan141 | |
| Examination of a failed road spring from chassis 1-EX, indicating excessive hardness. | 5th Jul 1922 | Box 42 \ 3 Scan142 | |
| Letter concerning the replacement of a faulty front spring plate for Chassis 1-EX. | 2nd Aug 1922 | Box 42 \ 3 Scan143 | |
| Test data for Woodheads rear road springs showing weight applied and released. | 16th Mar 1923 | Box 42 \ 3 Scan144 | |
| The dispatch of front and rear springs to the stores. | 1st Aug 1923 | Box 42 \ 3 Scan145 | |
| Clearance measurements between the tube and rubber buffer on a 4.EX car. | 30th Aug 1923 | Box 42 \ 3 Scan146 | |
| High percentage of front spring breakages on the 40/50 postwar chassis and communications with the supplier. | 6th Nov 1923 | Box 42 \ 3 Scan147 | |
| Report comparing prewar and postwar spring breakages, fractures, and manufacturing processes. | 1st Nov 1923 | Box 42 \ 3 Scan148 | |
| Proposal to increase the strength of front springs to reduce breakages for both home and colonial service. | 6th Nov 1923 | Box 42 \ 3 Scan149 | |
| The dispatch and testing of new front spring plates made from Silico Manganese steel for the 40/50 chassis. | 30th Jan 1924 | Box 42 \ 3 Scan150 | |
| Receipt and testing of experimental Silico-Manganese steel road spring plates from Messrs. Woodhead & Sons. | 4th Feb 1924 | Box 42 \ 3 Scan151 | |
| Load diagram for a Woodhead's rear spring used on 40/50 HP models, complete with clips and hoops. | 4th Feb 1924 | Box 42 \ 3 Scan152 | |
| Load diagram for a Woodhead's front spring for 40/50 HP models, showing load vs. deflection. | 5th Sep 1924 | Box 42 \ 3 Scan153 | |
| Collection and despatch of Woodheads Springs for a 40/50 HP chassis. | 5th Sep 1924 | Box 42 \ 3 Scan154 | |
| The bump testing of Woodheads road springs. | 11th Sep 1924 | Box 42 \ 3 Scan155 | |
| Compromise on front spring design, discussing stiffness, plate thickness, and testing. | 13th Sep 1924 | Box 42 \ 3 Scan156 | |
| Delivery schedules and specifications for front springs from suppliers Woodhead and Firth for the 'U' Series 40/50 HP Chassis. | 22th Sep 1924 | Box 42 \ 3 Scan157 | |
| Receipt and allocation of new front axle springs from Jonas Woodhead & Sons Ltd. | 22th Sep 1924 | Box 42 \ 3 Scan158 | |
| An urgent requirement for clips, sheaths and gaiters to proceed with testing Woodhead springs for a Press Demonstration car. | 29th Sep 1924 | Box 42 \ 3 Scan159 | |
| Criticisms of a cabriolet's springing, identifying issues with friction and stiffness. | 3rd Oct 1924 | Box 42 \ 3 Scan160 | |
| Modifications to the thinleaf type front springs based on a sample from Woohead. | 6th Oct 1924 | Box 42 \ 3 Scan161 | |
| 10,000-mile test log for a Landaulet 9.P.K. with stiffer front road springs. | 6th Oct 1924 | Box 42 \ 3 Scan162 | |
| Test report for a 10,000-mile trial on Woodhead's 20% stiffer front road springs for an open touring car. | 19th Nov 1924 | Box 42 \ 3 Scan163 | |
| 10,000-mile test report on Woodheads' stiffer springs for an Open Touring car, model 98 NK. | 19th Nov 1924 | Box 42 \ 3 Scan164 | |
| Analysis of a bump test on Woodhead springs, detailing failures and suggesting design improvements. | 16th Oct 1924 | Box 42 \ 3 Scan165 | |
| Continued memo discussing modifications to a tapering component. | 10th Oct 1924 | Box 42 \ 3 Scan166 | |
| The successful 10,000-mile test of Woodhead 20% stiffer front springs for 40/50 HP cars. | 10th Oct 1924 | Box 42 \ 3 Scan167 | |
| Reporting the mileage status of ongoing tests on Woodhead front road springs in France. | 5th Nov 1924 | Box 42 \ 3 Scan168 | |
| On the results of tests of Woodhead front road springs in France. | 10th Nov 1924 | Box 42 \ 3 Scan169 | |
| The road testing of 12 1/4% thin leaf Woodhead springs in France. | 17th Nov 1924 | Box 42 \ 3 Scan170 | |
| Requesting the return of a standardisation sheet for four-wheel brakes using Woodheads springs. | 20th Nov 1924 | Box 42 \ 3 Scan171 | |
| Tests on 12 1/2% thin leaf Woodhead springs in France following consistent failures. | 20th Nov 1924 | Box 42 \ 3 Scan172 | |
| Covering memo arranging a meeting to discuss a copied memo concerning a Woodhead spring replacement programme. | 22th Nov 1924 | Box 42 \ 3 Scan173 | |
| 10,000-mile test of Woodhead thin leaf springs in France. | 30th Nov 1924 | Box 42 \ 3 Scan174 | |
| Comparison of a front spring fitted to a Springfield chassis with a Woodhead spring. | 21th Jul 1925 | Box 42 \ 3 Scan175 | |
| Particulars and comparison of front springs for American Chassis No S-167-MK. | 17th Jul 1925 | Box 42 \ 3 Scan176 | |
| Blank document page with a company stamp. | 20th Jul 1925 | Box 42 \ 3 Scan177 | |
| Inquiring about the manufacturing accuracy and heat treatment of American springs compared to Woodhead springs. | 24th Jul 1925 | Box 42 \ 3 Scan178 | |
| Preparation of drawings for Woodhead Self Shock Absorbing Springs for the 40/50 HP chassis. | 24th Nov 1925 | Box 42 \ 3 Scan179 | |
| Letter and drawings for 40/50 HP Chassis front road springs from Jonas Woodhead & Sons Ltd. | 27th Nov 1925 | Box 42 \ 3 Scan180 | |
| The testing and failure of special front springs from Messrs. Woodheads. | 23th Feb 1926 | Box 42 \ 3 Scan181 | |
| Test report on the failure of Woodhead's 8-clip type front road springs. | 23th Feb 1926 | Box 42 \ 3 Scan182 | |
| Testing special Woodhead front road springs. | 25th Feb 1926 | Box 42 \ 3 Scan183 | |
| Graph and data tables comparing the load vs. deflection of standard and special front springs. | 23th Feb 1926 | Box 42 \ 3 Scan184 | |
| Blank document with a red ink stamp from the Print Room. | 23th Feb 1926 | Box 42 \ 3 Scan185 | |
| Graph and data tables comparing the deflection under load for a standard front spring versus a Woodhead special front spring. | 23th Feb 1926 | Box 42 \ 3 Scan186 | |
| The reverse of a document showing a handwritten reference number and a red ink date stamp. | 23th Feb 1926 | Box 42 \ 3 Scan187 | |
| The breakage of Woodhead's 8 Clip Type front springs. | 26th Feb 1926 | Box 42 \ 3 Scan188 | |
| Test report on Woodhead front springs, evaluating durability and anti-wobbling characteristics. | 26th Feb 1926 | Box 42 \ 3 Scan189 | |
| Preliminary impression on the performance of new springs compared to standard ones, specifically regarding tyre types and brake torque. | 1st Mar 1926 | Box 42 \ 3 Scan190 | |
| The chemical analysis and physical properties of Silico-Manganese steel for Axle Springs. | 1st Mar 1926 | Box 42 \ 3 Scan191 | |
| Differences in effect and construction between special Woodhead springs and conventional front road springs. | 16th Mar 1926 | Box 42 \ 3 Scan192 | |
| Returning broken front springs to Woodhead's for repair and fitting of new leaves. | 30th Mar 1926 | Box 42 \ 3 Scan193 | |
| And comparing different suspension schemes, including front springs, rebound leaves, and shock dampers. | 30th Mar 1926 | Box 42 \ 3 Scan194 | |
| Request to Messrs. Woodhead to manufacture a pair of front springs to a specific experimental specification. | 1st Apr 1926 | Box 42 \ 3 Scan195 | |
| The failure of Woodhead springs during testing and a request for their return to the manufacturer for replacement. | 16th Apr 1926 | Box 42 \ 3 Scan196 | |
| Request for a modified pair of rear springs for an experimental car, with specifications for them to be weaker and have an increased camber. | 21th Apr 1926 | Box 42 \ 3 Scan197 | |
| Specification sheet for a spring, detailing its dimensions and load characteristics. | 21th Apr 1926 | Box 42 \ 3 Scan198 | |
| Hand-drawn sketch with dimensions for a spring eye and rebound clip on a spring. | 10th Aug 1926 | Box 42 \ 3 Scan199 | |
| Results of torsion tests on front springs. | 10th Aug 1926 | Box 42 \ 3 Scan200 | |
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