Photograph of a Lear Developments Type T-120 transmitter, circa 1936-1939. The caption on verso notes that transmitter was developed for the Royal Canadian Air Force and describes the device's components and specifications. Caption on verso: "J. This…
Items from Box 4, Folder 3 of the William P. and Moya Olsen Lear Papers, circa 1937-1938. Contains an advertisement for the Learadio Compass, an advertisement for the Learadio AMRL-1 Marine Radio Direction Finder, and a brochure for Learadio…
Items from Box 1, Folder 8 of the William P. and Moya Olsen Lear Papers, December 1938 to August 1939. Contains three balance sheets for Lear Developments, originally enclosed in a file folder labeled "L-f / Financial Statements."
Items from Box 4, Folder 22; Box 205, Folder 1; and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, circa 1938-1939. Contains diagrams related to Unihand reel and ARL-48 motor reel. Seven total items.
Items from Box 1, Folder 4 of the William P. and Moya Olsen Lear Papers, May to October 1938 and August 1979. Contains five typed letters and four telegrams between William P. Lear and Cass S. Hough, primarily discussing installation,…
Items from Box 4, Folder 6 of the William P. and Moya Olsen Lear Papers, September to October 1939. Folder contains assorted items related to the Learadio Airport Localizer (L-P-2), including summaries, correspondence, diagrams, sketches, a clipping,…
Photograph of a Learadio antenna reel, circa 1939.Inscription: "Complete manual operated ant. reel with spring take-up fair-lead and [illegible]. / 1939."
Report about the Lear Developments automatic landing field orientation device, June 1939. Contains technical details about the device. Three typed pages on Learadio letterhead.