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[William P. and Moya Olsen Lear Papers, Box 4, Folder 30 - "Descriptive specifications of Learadio Lear-O-Scope Model LC 100 Radio Compass Direction Finder," circa 1931-1939] (Item)

Items from Box 4, Folder 30 of the William P. and Moya Olsen Lear Papers, circa 1931-1939. Contains two reports related to the Learadio Lear-O-Scope Model LC 100 Radio Compass Direction Finder.

[William P. and Moya Olsen Lear Papers, Box 18, Folder 2; Box 200, Folder 2 - "Radio direction finding system (Case 20-1)" -- patent application [RM files], 1940-1943] (Item)

Items from Box 18, Folder 2 and Box 200, Folder 2 of the William P. and Moya Olsen Lear Papers, circa 1940-1943. Contains documents and drawings related to the patent application of the radio direction finding system (Case 20-1). 24 total items.

[William P. and Moya Olsen Lear Papers, Box 18, Folder 1 - "Radio automatic guidance system (Case 31-3) and loop antenna system (Can 8-1)," 1940-1943] (Item)

Items from Box 18, Folder 1 of the William P. and Moya Olsen Lear Papers, circa 1940-1943. Contains a patent application and other documents related to the Radio Automatic Guidance System (Case 31-3) and Loop Antenna System (Can. 8-1), as well as a manual titled "The Lear-Matic: The ultimate instrument for aircraft navigation." 15 total documents.

[William P. and Moya Olsen Lear Papers, Box 50, Folder 11 - "Aviation radio before, during, and after the war" -- WPL speech, 1945 March 7] (Item)

Items from Box 50, Folder 11 of the William P. and Moya Olsen Lear Papers, March 7, 1945. Contains a typed copy of speech delivered by William P. Lear to the Aviation Writers Association and booklet with a slightly edited version of the speech. The speech focuses on Lear's ongoing development of aviation radio devices. Two total documents.

[Aircraft instrument panel outfitted with Learadio equipment] (Item)

Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939. Two arrows point to the direction indicator and the interphone and radio transmit control switch.Inscription: "NA-44 / Learadio equipment installation / Front cockpit. 20.1171/33."

[Aircraft cockpit outfitted with Learadio equipment] (Item)

Photograph of an aircraft cockpit outfitted with Learadio equipment, circa 1931-1939. Arrows point to the microphone and support and the interphone and radio transmit control and jack box.Inscription: "NA-44 / Learadio equipment installation / Rear cockpit. 20.1171/33."

[Aircraft instrument panel outfitted with Learadio equipment] (Item)

Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939.

[William P. Lear with first Lear-o-Scope] (Item)

Photograph of William P. Lear with the first Lear-o-Scope, circa 1935.Inscription: "1935. WPL with 1st Lear-o-scope."

[Betsy Ross using Learadio portable receiver] (Item)

Photograph of pilot Betsy Ross using a Learadio portable receiver in the cockpit of her Taylorcraft aircraft, August 20, 1940. An accompanying press release describes Ross's recent flight from Harrisburg Pennsylvania State Airport, noted as the first light plane altitude flight ever recognized by the National Aeronautics Association. It also describes the Learadio receiver installed in Ross's…

[William P. Lear and employees looking at airborne radio equipment] (Item)

Photograph of William P. Lear (right) and two Lear, Incorporated employees looking at airborne radio equipment, circa 1940s-1950s.Typed caption on verso: "William P. Lear, Chairman of the Board, Lear, Inc., consults with members of his technical staff over newly designed airborne radio equipment. Lear, Inc. Santa Monica, California, U.S.A."Stamped on verso: "Hullibarger's Photography, [address and…

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