Technical. Merlin 22, 23, 24, & 25 Maintenance Manual, Rolls Royce, Derby, n.d., b&w illu

Technical. Merlin 22, 23, 24, & 25 Maintenance Manual, Rolls Royce, Derby, n.d., b&w illusts., orig. printed wrappers with linen-backstrip, rubbed and soiled, folio, together with Instructions for the Installation, Operation and Maintenance of the Wright Double-Row Cyclone 14 Aircraft Engine, model GR-2600A, 2nd ed., Paterson, New Jersey, August 1940, b&w illusts. and folding plans at rear, orig. wrappers, rubbed, 4to, plus Armstrong Siddeley Handbook for the Operation and the Maintenance of the Cheetah X Aero Engine, Coventry, n.d., b&w illusts. and folding plans, sellotape repairs to hole punches, orig. cloth ring binder, rubbed, 8vo, plus a quantity of assorted technical aviation manuals and handbooks, mostly post-war (3 cartons)