Browse Items (1093 total)

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

Photograph of a Learadio remote controller and transmitter remote control, circa 1936. The caption describes the devices' specifications and utility.Typed caption on verso: "O. (circa 1936) A picture of both the combination remote controller and the…

Photograph of a Learadio T-30 R3 radio system and assorted components, circa 1935-1939. The inscription notes that this equipment was developed especially for pilots operating in Alaska.Inscription: "Learadio T-30 R3. Saved many lives and much money…

Photograph of a Learadio T-40 transmitter, circa 1935-1939. Inscription: "T40 6 freq. transmitter designed for D.O.C. (FAA). 1935."

Photograph of a Learadio Type TR-50 transmitter, showing views of the internal components and the external case, circa 1931-1939.Typed caption on verso: "T. Shows the original effort to make a more powerful transmitter by using tubed in parallel.…

Photograph of four Learadio employees using a portable transmitter and receiver unit, Garden City, New York, circa 1935. The company's factory building is visible in the background.Inscription on verso: "1935 - Garden City - Long Island, New York.…

Photograph of a LearAvia ambulance helicopter outside a hospital, circa 1974. Inscription on slide mount: "Ambulance copter outfitted at Lear / '74."Stamped on slide mount: "Dec 74 P2."

Photograph of a LearAvia ambulance helicopter, showing the cockpit and stretchers for patients, circa 1974. Washoe Medical Center is visible in the background.Inscription on slide mount: "Ambulance copter."Stamped on slide mount: "Dec 74 P2."

Photograph of a LearAvia Bell 206A Jetranger helicopter lifting a cow, circa November 1973. Several people watch from the ground.

Photograph of a LearAvia Bell 47 helicopter lifting an oil drum, circa 1974. Inscription on slide mount: "Demo (2)."Stamped on slide mount: "Dec 74 P2."