Thin green wire coiled around a brown metal circular tube. A paper note is included with object that states, "Small highly efficiently radio coil developed by William P. Lear. These coils were far smaller than contemporary coils, and were used in the…
Notes written by William P. Lear about the utility of automatic direction finders, circa 1940. Describes a flight from New York to Dayon, Ohio in Lear's Waco aircraft and how a Lear ADF-8 helped him navigate despite static from a thunderstorm.…