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• Format > photographic prints (remove)
• Subject > Aids to air navigation (remove)

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• Still Image (3)
• Mixed Materials (1)

• photographic prints (4)
• press releases (1)

• Copyright undetermined (3)
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• Aids to air navigation (4)
• Learadio (3)
• Lear Avia Corporation (2)
• Radio in aeronautics (2)
• Radio--Transmitters and transmission (2)
• Airplanes--Cockpits (1)
• Douglas DC-3 Family (1)
• Lear, William P. (William Powell), 1902-1978 (1)
• MacRobertson International Air Race (1934) (1)
• Messerschmitt Bf 109 Family (1)
• Nichols, Nichols, Reeder Glen, 1904-1975 (1)
• Pangborn, Clyde Edward, approximately 1893-1958 (1)
• Radio direction finders (1)
• Turner, Roscoe, 1895-1970 (1)
• World War, 1939-1945 (1)

4 results

[Douglas DC-3 instrument panel with Learadio ADF 8] (Item)

Photograph of a Douglas DC-3 instrument panel with a Learadio ADF 8 automatic direction finder, circa 1940s. The direction finder and two gauges are circled and numbered. Inscription on verso: "Copy of instrument panel (Chicago and [illegible] DC-3)."

[Learadio portable receiver] (Item)

Photograph of a Learadio portable receiver, circa 1930s-1940s.Inscription: "Portable 2-band battery-operated receiver used thru-out WW2 by many USAF [personnel?] here and all over world."

[Learadio radio and navigation equipment] (Item)

Photograph of Learadio radio and navigation equipment, consisting of a transmitter, receiver, and direction finder, circa 1936-1939. The verso caption notes that this equipment was developed by "myself" (William P. Lear) and Reeder Nichols for the London to Melbourne Air Race.Caption on verso: "S. This is the equipment that was built up in the 60 days in our organization at 123 W. 17th St. NYC, by…

[William P. and Moya Olsen Lear Papers, Box 27, Folder 23 - Captured Me109 radio equipment evaluation by WPL, 1941 July 24] (Item)

Items from Box 27, Folder 23 of the William P. and Moya Olsen Lear Papers, July 24, 1941. Contains a press release and eight captioned photographs related to William P. Lear's evaluation of German radio equipment taken from a captured Messerschmitt Bf 109 aircraft. The photographs depict Lear and Lear Avia engineers carrying out tests on the radio equipment, as well as close-up shots of the…