Items from Box 34, Folder 1 of the William P. and Moya Olsen Lear Papers, December 1939. Contains handwritten notes and sketches about the Lear low approach system. All or most of the notes appear to have been written by William P. Lear. Five total…
Items from Box 4, Folder 27 of the William P. and Moya Olsen Lear Papers, August 1939. Includes eight pages of handwritten notes and sketches related to "Blind approach by voice," an airplane landing system.