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[Douglas DC-3 instrument panel with Learadio ADF 8]
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)."
[Aircraft instrument panel equipped with Learadio device]
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."
[Instrument panel in aircraft cockpit]
Photograph of the instrument panel in an unidentified aircraft cockpit, circa 1920s-1940s. A Lear Radio-Aire is installed.