Inventor of the jet engine. Lot of nine signed items: two ALS, a souvenir typescript with details of an early jet test, a photocopied photo of a jet engine, a souvenir brochure, an endorsement signature on a check, a copy of Rolls-Royce magazine featuring “Fifty Years of Jet Engines,” and two commemorative postal covers, each additionally signed by one or two pilots. Accompanied by the original hand-addressed envelope for one of the letters. In fine condition. R&R COA.
