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![[Learjet 23 aircraft during flight test at Lear facility]](https://digitalcollections.museumofflight.org/files/square_thumbnails/6a6ab06724fdd1b5724d3b4535ede775.jpg "[Learjet 23 aircraft during flight test at Lear facility]")
Photograph of a Learjet 23 aircraft (tail number N801L) during a flight test at a Lear facility, January 1964. Details about the aircraft and its flight tests are provided in the caption.Typed caption on verso: "Fifty-Hour Milestone: Latest photo of Lear Jet being put through its paces for recent high-speed tests and flutter analysis during which it logged 50th hour. / The maximum level-flight…
![[Memorandum to Lear Jet employees from Bob Hagan, October 9, 1963]](https://digitalcollections.museumofflight.org/files/square_thumbnails/5989af07a3927a208d01d056ae0f40f2.jpg "[Memorandum to Lear Jet employees from Bob Hagan, October 9, 1963]")
Memorandum to Lear Jet employees from Bob Hagan, Manufacturing Superintendent and Chief of Flight Test, October 9, 1963. Sends thanks and congratulations to employees for a job well done and shares highlights from the test flight of the Learjet 23. Two typed pages on Lear Jet stationery.