Photograph of the wing section of the Learjet 23 prototype, July 23, 1963. Inscription on verso: "P2-A / July 23, 1963 / 8 spars - count 'em for strength far beyond part 3 and part 4B flite [sic] requirements plus fail safe construction due to multi…
Photograph of Learjet 23 aircraft under construction at a Lear facility, circa 1960s. Stamped on verso: "Lear Jet Corporation / Photograph / No. P 97J / P.O. Box 1260 / Wichita, Kansas 67201."
Photograph of a Learjet 23 fuselage under construction at the Lear's Wichita facility, Kansas, circa 1960s.Inscription on verso: "Learjet plant Wichita / Mid-60s / Fuselage of Learjet under construction."Stamped on verso: "[crossed out] Lear Jet…
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…
Photograph of the Lear Jet booth at a National Business Aviation Association conference, Saint Louis, Missouri, circa 1960s.Inscription on verso: "St. Louis NBAA."