Browse Items (32 total)

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."

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

Photograph of a Learadio automatic direction finder, circa 1940.Inscription: "Manual loop antenna rotator and directional indicator. 1940."

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

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

Photograph of an aircraft instrument panel equipped with a Learadio device, circa 1941.Inscription: "1941. [Amphibian?] with first dry-cell operated trans-rec[cut off]. [illegible] watt. Range 300 miles."

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]…

Photograph of the assembly line at a Lear Avia facility, Vandalia, Ohio, circa 1940. Male and female employees work on device components at long work tables.Inscription on verso: "Assembly."

Photograph of the assembly line at a Lear Avia facility, Vandalia, Ohio, circa 1940. Male and female employees work on device components at long work tables.Inscription: "Lear Avia assbly [assembly] line -- 1940. Vandalia."Inscription on verso: "View…

Photograph of employees working in the model shop at a Lear Avia facility, Vandalia, Ohio, circa 1940.Inscription: "Vandalia. 1940 Eng. Dept. model shop."Inscription on verso: "Archives. Note written in WPL hand."