| Description | Date | Identifier | |
| Specification document for the Peregrine No.6 engine, detailing updates to various components. | 11th Nov 1932 | Box 169 \ 4 img175 | |
| Specification for building Peregrine Unit No. 6. | 23th Nov 1932 | Box 169 \ 4 img176 | |
| Specification sheet for the Peregrine II, No. 5 Unit engine. | 7th Dec 1932 | Box 169 \ 4 img177 | |
| Parts list for engine components including pistons, cylinder head, valves, and camshaft. | 7th Dec 1932 | Box 169 \ 4 img178 | |
| Parts list for various engine components, including pumps, filters, and valves, with corresponding part and scheme numbers. | 1st Dec 1932 | Box 169 \ 4 img179 | |
| List of part modifications and deletions for the Flywheel and Clutch assembly. | 12th Jul 1932 | Box 169 \ 4 img180 | |
| Request to build up a clutch centre with specific rubber blocks and clearance. | 9th Dec 1932 | Box 169 \ 4 img181 | |
| Specification memo for the clutch setting on 3.PER.II. | 13th Jan 1933 | Box 169 \ 4 img182 | |
| Specifications and settings for a PFR.II clutch plate. | 19th Jan 1933 | Box 169 \ 4 img183 | |
| Revised specification for the Peregrine II, No. 6 Unit, as fitted in Chassis 3-Per:II for trials. | 13th Jan 1933 | Box 169 \ 4 img184 | |
| List of engine component parts and their corresponding reference numbers. | 1st Feb 1933 | Box 169 \ 4 img185 | |
| List of part updates and modifications for various engine components. | 1st Feb 1933 | Box 169 \ 4 img186 | |
| List of modifications and parts for various engine systems. | 1st Feb 1933 | Box 169 \ 4 img187 | |
| List of parts and schemes for a Crankshaft Damper, Fan, and Flywheel & Clutch assembly. | 1st Feb 1933 | Box 169 \ 4 img188 | |
| Replacement parts fitted to a Peregrine II chassis after 10,000-mile trials. | 16th Mar 1933 | Box 169 \ 4 img189 | |
| On oil consumption tests for Per.3, instructing modifications to piston scraper rings. | 25th Mar 1933 | Box 169 \ 4 img190 | |
| Specification revision for Peregrine II, No.6 Unit, detailing new piston rings and a servo motor friction plate. | 25th May 1933 | Box 169 \ 4 img191 | |
| Specification revisions for a chassis and engine unit, detailing parts for the radiator and oil cooling system. | 26th May 1933 | Box 169 \ 4 img192 | |
| Proposing a trial of a different bearing lubrication method for a Peregrine engine unit to solve an overheating issue. | 23th May 1933 | Box 169 \ 4 img193 | |
| Complete specification for the Peregrine II, No. 7 Unit engine. | 23th Feb 1933 | Box 169 \ 4 img194 | |
| List of engine components with corresponding part numbers and brief specifications. | 23th Feb 1933 | Box 169 \ 4 img195 | |
| List of engine component modifications and part number updates. | 23th Feb 1933 | Box 169 \ 4 img196 | |
| List of parts and schemes for an oil level indicator, oil relief valve, carburetter, induction pipes, fan, and flywheel assembly. | 23th Feb 1933 | Box 169 \ 4 img197 | |
| Continued list of parts for the flywheel, clutch, gearbox, and servo motor mechanisms. | 23th Feb 1933 | Box 169 \ 4 img198 | |
| List of part numbers for servo drives, speedometer drives, and change gear/brake mechanisms. | 23th Feb 1933 | Box 169 \ 4 img199 | |
| Specification for modifications to front and rear shock dampers for Chassis -Per.11. No. 7 Unit. | 15th Jun 1933 | Box 169 \ 4 img200 | |
| Modifications to the Crankcase & Bearings concerning the oil sump, drain plug, and oil baffle. | 26th May 1933 | Box 169 \ 4 img201 | |
| Blueprint detailing a camshaft timing diagram and cam profile. | 26th May 1933 | Box 169 \ 4 img202 | |
| Valve timing diagram for a 12-cylinder engine, showing angular positions and keyway reference. | 24th May 1932 | Box 169 \ 4 img203 | |
| Troubles with rocker pedestals and crankshaft dampers on the Peregrine engine. | 24th May 1932 | Box 169 \ 4 img204 | |
| Request to produce two Peregrine camshafts with altered cam positions as per an attached sketch. | 31th May 1932 | Box 169 \ 4 img205 | |
| Requesting the creation of a second 'Peregrine' 2 induction pipe with new specifications. | 14th Jun 1932 | Box 169 \ 4 img206 | |
| Request to manufacture one Peregrine camshaft based on an attached sketch. | 20th Jun 1932 | Box 169 \ 4 img207 | |
| Camshaft timing diagram for an inlet and exhaust cam. | 14th Jun 1932 | Box 169 \ 4 img208 | |
| The positioning of 14mm spark plugs on a small plug Peregrine head. | 7th Jul 1932 | Box 169 \ 4 img209 | |
| Load specifications for a crankshaft damper on a Big Journal Peregrine unit. | 5th Sep 1932 | Box 169 \ 4 img210 | |
| Specifying the design for the next Peregrine unit, focusing on the crankcase lubrication scheme and camshaft form. | 17th Sep 1932 | Box 169 \ 4 img211 | |
| List of modifications and specifications for a new Peregrine engine unit. | 9th Sep 1932 | Box 169 \ 4 img212 | |
| List of specifications and modifications for new Peregrine engine units. | 3rd Sep 1932 | Box 169 \ 4 img213 | |
| Page 2 of a specification sheet detailing the Water Pump, Ignition Governer, and Flywheel. | 17th Sep 1932 | Box 169 \ 4 img214 | |
| Preliminary test of a Powerplus supercharger on a Peregrine engine. | 17th Sep 1932 | Box 169 \ 4 img215 | |
| Fitting friction engine dampers directly from the crankcase to the frame on a Peregrine engine. | 6th Oct 1932 | Box 169 \ 4 img216 | |
| Outstanding engine and chassis modifications for the Peregrine car. | 15th Oct 1932 | Box 169 \ 4 img217 | |
| Requesting modifications to be made to the next Peregrine carburetter. | 17th Oct 1932 | Box 169 \ 4 img218 | |
| Request for an experimental suction piston for a Peregrine semi-expanding carburetter. | 24th Oct 1932 | Box 169 \ 4 img219 | |
| Drawing detailing a modification to a Peregrine Piston for an experimental carburettor. | 24th Nov 1942 | Box 169 \ 4 img220 | |
| Machining of a Peregrine turbulent head and testing of aluminium case shock absorbers. | 25th Oct 1932 | Box 169 \ 4 img221 | |
| Requesting the completion of servo efficiency tests for a Short Stroke Peregrine engine unit. | 23th Oct 1932 | Box 169 \ 4 img222 | |
| Request to add identification plates to Peregrine cylinder heads to track modifications and types. | 7th Nov 1932 | Box 169 \ 4 img223 | |
| Request to trial a damper to remove gear rattles on the Peregrine engine. | 9th Nov 1932 | Box 169 \ 4 img224 | |
| Drawing of a damper for gear rattles, Per II. | 30th Nov 1932 | Box 169 \ 4 img225 | |
| Listing Peregrine engine and chassis parts that are no longer required for experimental work. | 30th Nov 1932 | Box 169 \ 4 img226 | |
| Request for a Peregrine carburetter body (E.100674) for analysis to inform future designs. | 28th Nov 1932 | Box 169 \ 4 img227 | |
| Requesting that brake levers and servo cams be kept in stores rather than scrapped. | 23th Nov 1932 | Box 169 \ 4 img228 | |
| Excessive pedal effort on the Peregrine clutch and the instruction to fit a new lever. | 2nd Dec 1932 | Box 169 \ 4 img229 | |
| Requesting the fitment of 40° servo cams to Peregrine servos for a car destined for France and the next three cars. | 1st Dec 1932 | Box 169 \ 4 img230 | |
| Unsatisfactory Peregrine exhaust valves and the issuance of a new design. | 8th Dec 1932 | Box 169 \ 4 img231 | |
| Timing errors found in tested camshafts due to incorrect keyway placement and manufacturing angle. | 21th Dec 1932 | Box 169 \ 4 img232 | |
| Diagram for a Peregrine camshaft modification showing valve timing angles. | 21th Dec 1932 | Box 169 \ 4 img233 | |
| Request to make alternative driving springs for the Peregrine damped spring drive. | 21th Dec 1932 | Box 169 \ 4 img234 | |
| Specifications for two different clutch drive springs. | 5th Jan 1933 | Box 169 \ 4 img235 | |
| Modifications and preliminary tests for the Peregrine carburetter and induction pipe arrangement. | 5th Jan 1933 | Box 169 \ 4 img236 | |
| Testing high Brinell Peregrine cylinder liners on a test car. | 13th Jan 1933 | Box 169 \ 4 img237 | |
| Specification sheet for the Peregrine II carburettors. | 17th Jan 1933 | Box 169 \ 4 img238 | |
| Modification to the Peregrine carburetter throttle body for improved performance. | 26th Jan 1933 | Box 169 \ 4 img239 | |
| Requesting parts for experiments on the Peregrine Induction System. | 6th Feb 1933 | Box 169 \ 4 img240 | |
| Fix for flywheel period issues, rendering current flywheels obsolete. | 27th Feb 1933 | Box 169 \ 4 img241 | |
| Modifications to be carried out on Peregrine Induction Systems. | 1st Mar 1933 | Box 169 \ 4 img242 | |
| Preventing the fitment of old type swinging arms due to incorrect hole sizes affecting brake installation. | 2nd Mar 1933 | Box 169 \ 4 img243 | |
| Request to make an adaptor for a Peregrine carburettor for experimental purposes. | 3rd Mar 1933 | Box 169 \ 4 img244 | |
| Suggesting experiments to reduce oil consumption for the Peregrine engine. | 8th Mar 1933 | Box 169 \ 4 img245 | |
| Partial blueprint of a Piston for the Peregrine engine. | 8th Mar 1933 | Box 169 \ 4 img246 | |
| Blueprint of four different Peregrine piston rings with dimensions. | 8th Mar 1933 | Box 169 \ 4 img247 | |
| Listing required parts for the next Peregrine I0,000 miles test. | 8th Mar 1933 | Box 169 \ 4 img248 | |
| Change to cotton material for the Peregrine Servo due to efficiency loss with the current RAD.13 material when oil is present. | 9th Mar 1933 | Box 169 \ 4 img249 | |
| Blueprint for a Peregrine Servo design, incorporating fully floating fabrics made of cotton material. | 9th Mar 1933 | Box 169 \ 4 img250 | |
| Experiments with a Peregrine servo, involving a new friction plate with staggered sections to improve braking. | 11th Mar 1933 | Box 169 \ 4 img251 | |
| Blueprint for a friction plate for a Peregrine servo. | 22th Mar 1933 | Box 169 \ 4 img252 | |
| The elimination of Peregrine gear rattles and the testing of minimum inertia. | 22th Mar 1933 | Box 169 \ 4 img253 | |
| Drawing of light flywheels for H2 760. | 22th Mar 1933 | Box 169 \ 4 img254 | |
| Slow running issues on a Peregrine engine due to camshaft overlap, with a new timing diagram. | 24th Mar 1933 | Box 169 \ 4 img255 | |
| Carburettor controls and silencers for the Peregrine III engine. | 27th Mar 1933 | Box 169 \ 4 img256 | |
| Request to manufacture two short-duration Peregrine camshafts with specific cam form diagrams. | 29th Mar 1933 | Box 169 \ 4 img257 | |
| Requesting the build-up of a flywheel and clutch to specification RR.Sch.366 for standardisation testing. | 8th Apr 1933 | Box 169 \ 4 img258 | |
| Request for specific cylinder heads for Peregrine II engine testing. | 8th Apr 1933 | Box 169 \ 4 img259 | |
| Requesting the production of large valve turbulent heads for Peregrine engine units No. 1 and No. 4. | 27th Apr 1933 | Box 169 \ 4 img260 | |
| Fitting of Peregrine cylinder liners for a 10,000-mile test in France. | 8th May 1933 | Box 169 \ 4 img261 | |
| Request to assemble a Peregrine carburettor and induction pipe with a list of specified modifications and parts. | 15th May 1933 | Box 169 \ 4 img262 | |
| Status of fitting new exhaust valves to outstanding Peregrine engines due to failures. | 25th May 1933 | Box 169 \ 4 img263 | |
| The exchange and modification of Peregrine test bed units. | 31th May 1933 | Box 169 \ 4 img264 | |
| Letter from Lagonda Works to W.A. Robotham providing information on a 12-cylinder engine. | 14th Jan 1938 | Box 170 \ 1 img001 | |
| Blueprint of a mechanical component with dimensional annotations. | 14th Jan 1938 | Box 170 \ 1 img002 | |
| Blueprint showing a partial side-view cross-section of a mechanical housing and its internal components. | 14th Jan 1938 | Box 170 \ 1 img003 | |
| Blueprint drawing of a mechanical assembly with dimensions. | 14th Jan 1938 | Box 170 \ 1 img004 | |
| Blueprint drawing of a mechanical housing component with dimensions. | 14th Jan 1938 | Box 170 \ 1 img005 | |
| Blueprint detailing the dimensions, radii, and drilling specifications for a shaped component. | 14th Jan 1938 | Box 170 \ 1 img006 | |
| Blueprint cross-section of a circular mechanical part with dimensional annotations. | 14th Jan 1938 | Box 170 \ 1 img007 | |
| Blueprint of a formed metal component with dimensional details. | 14th Jan 1938 | Box 170 \ 1 img008 | |
| Blueprint showing dimensional specifications for a large circular component. | 14th Jan 1938 | Box 170 \ 1 img010 | |
| Blueprint for a road wheel with material and weight specifications. | 1st May 1914 | Box 170 \ 1 img011 | |
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