Browse Items (78 total)

[William P. and Moya Olsen Lear Papers, Box 28, Folder 5 - Direction finders, 1926-1941]
Items from Box 28, Folder 5 of the William P. and Moya Olsen Lear Papers, 1926-1941. Contains patent documentation for various aircraft and radio systems: Joseph Dugan's synchronous bomb sight, Dugan's radio direction and position indicating system,…

[William P. and Moya Olsen Lear Papers, Box 28, Folder 4; Box 200, Folder 4 - Direction finders -- patent copies and diagrams [L-I-2/RM files], 1926-1941]
Items from Box 28, Folder 4 and Box 200, Folder 4 of the William P. and Moya Olsen Lear Papers, circa 1926-1941. Contains patent copies and diagrams related to Lear direction finders. 26 total items.

[Amelia Earhart and William P. Lear]
Photograph of Amelia Earhart and William P. Lear, circa 1930s.Inscription on verso: "[G. P. Putnam?]."

[Learmatic navigator]
Photograph of a Learmatic navigator, circa 1940s.Inscription: "Learmatic navigator combining directional gyro with adjustable [illegible] and automatic and/or manual loop [rotator?]."

[Learadio portable receiver]
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 Beech 17R Staggerwing aircraft]
Photograph of a Learadio Beech 17R Staggerwing aircraft, circa 1930s-1940s.Stamped on verso: "Please credit Hans Groenhoff, [crossed out telephone number and address in New York City, New York]."Note attached to verso: "[letterhead: Norman Warren] /…

[Learadio Beech 17R Staggerwing aircraft]
Photograph of a Learadio Beech 17R Staggerwing aircraft, circa 1930s-1940s.Stamped on verso: "Please credit Hans Groenhoff, [crossed out telephone number and address in New York City, New York]."

[William P. Lear in cockpit of Learadio Waco E Airistocrat aircraft]
Photograph of William P. Lear in the cockpit of a Learadio Waco E Airistocrat aircraft, circa 1930s-1940s.

[Learadio Model RCB receiver tuning unit]
Photograph of a Learadio Model RCB receiver tuning unit, circa 1930s-1940s.

[Learadio radio compass tuning unit]
Photograph of a Learadio radio compass tuning unit, circa 1930s-1940s.
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