Photograph of the LJ23 Automatic Flight Control System, circa 1960s-1970s. The components are described in the caption.Typed caption on verso: "[letterhead: 'Lear Jet Corporation / Photo Release'] Components that make up the new LJ23 Automatic Flight…
Photograph of the Lockheed-Sunnyvale 50 KVA System, circa 1960s-1970s.
Typed caption: "Lockheed-Sunnyvale 50 KVA System / Shown during final run-in with thermal instrumentation connected to inverters. (Reflections on front panel caused by temporary…
Photograph of a man working on the wing section of the Learjet 23 prototype, July 25, 1963. The forward fuselage section is visible in the background.Inscription on verso: "P3-E / July 25, 1963."
Photograph of three men conducting tests on the Learjet 23 prototype, March 16, 1964.Inscription on verso: "Flight test instruction for ground test / T-76-3A / 3-16-64."
Photograph of men installing a new engine in the Learjet 23 prototype, February 21, 1964.Inscription on verso: "Installing new engine on Jet #1 / 2-21-64."
Photograph of two men looking at the door of the Learjet 23 prototype, February 18, 1964. A third man is visible inside the aircraft performing a test with an oscillograph.Inscription on verso: "Direct read out oscillograph loaned from Century…
Photograph of two men watching as William P. Lear jumps on a piece of windshield material to demonstrate its durability, circa 1960s.Inscription on verso: "WPL - 6LT01 / Lear Avia Archive / WPL jumping on Lear Jet windshield material to show…
Photograph of (from left to right) Duane Atkinson, Leonard Valladao, Frank Bonner, Allen E. Paulson, and Jack Bledsoe with a Learjet aircraft, circa 1960s.Typed caption on verso: "Left to right: / Duane Atkinson / Leonard Valladao / Frank Bonner, Sr.…
Photograph of (from left to right) Moya O. Lear, Kansas Governor William H. Avery, W. L. Landers and Bill Sipprell at a Lear Jet facility, August 12, 1965. Typed caption on verso: "Governor W. H. Avery visits Lear Jet. From left: Mrs. Moya Lear; Gov.…
Photograph of Moya O. Lear (second from left), William P. Lear (center), and representatives of the Gates Rubber Company looking at documents, circa April 1967.