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• Mixed Materials (3)

• ballots (1)
• correspondence (1)
• mixed materials (1)
• reports (1)

• In copyright (3)

• Lear Developments (3)
• Learadio (2)
• Radio direction finders (2)
• Radio in aeronautics (2)
• Aids to air navigation (1)
• Lear, William P. (William Powell), 1902-1978 (1)
• Radio--Transmitters and transmission (1)

3 results

[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 4, Folder 6 - "Learadio Airport Localizer (L-P-2)", 1939 September - October] (Item)

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, and a Library of Congress certificate of copyright. 14 total documents and original folder labeled "L-p2 / 'Learadio Airport Localizer.'"

[William P. and Moya Olsen Lear Papers, Box 1, Folder 2 - Letter to WPL, President, Lear Developments from Lieut. Gen. V. Cherep-Spiridovich, Proctor, Aeronautical Research Council, 1941 January 5] (Item)

Items from Box 1, Folder 2 of the William P. and Moya Olsen Lear Papers, January 5, 1941. Contains one typed letter to William P. Lear, President, Lear Developments, from Lieut. Gen. V. Cherep-Spiridovich, Proctor, Aeronautical Research Council. Extends invitation to serve as a member and includes "first pre-organization ballot on included draft of proposed regulations and activities."