Browse Items (60 total)

Composite photograph of a Learadio loop antenna, showing two views of the internal components, circa 1931-1939. The caption describes the antenna's development and specifications.Typed caption on verso: "H. Shows an early attempt to tune the loop…

Photograph of a Learadio loop antenna, circa 1931-1939.

Photograph of a Learadio portable transceiver and travel case, circa 1931-1939.Inscription: "Portable transceiver for [illegible] use."

Photograph of a man using a Learadio portable marker transmitter in an open field, circa 1931-1939.Inscription: "First completely portable outer or inner marker transmitter for radio compass [illegible]."

Photograph of a hangar at Curtiss-Reynolds Field, Illinois, circa 1932. Groups of people are standing outside the hangar and on the hangar's balcony. Aircraft are partially visible through the open doors.Inscription on verso: "1932. Curtis-Reynolds…

Photograph of William P. Lear holding the Lear Radio-Aire, Chicago, Illinois, circa 1932. Inscription: "The first Radio Aire / Bill / 1932."Inscription on verso: "Bill Lear + his first airplane radio, the Lear Radio-Aire. Chicago, 1932. Photo…

Photograph of William P. Lear with his Waco UIC aircraft, circa 1933. Inscription on verso: "1935 / WPL entering 1933 Continental Powered Waco preparatory to NY Los Angeles trip when Model L DF was shown to whole USA and many CAA stations for the…

Photograph of William P. Lear with his Stinson SR Reliant aircraft at Roosevelt Field, Mineola, New York, August 1933. Typed caption on verso: "Bill Lear seizes the opportunity to pose with his newly acquired 'Executive Model Stinson Relient [sic]'.…

Photograph of people working in the Lear Developments workshop, New York City, New York, circa 1933-1938. Electronic components, device casings, and a loop antenna are visible on the workbenches.Inscription on verso: "The Lear (1) Engineering Dept,…

Photograph of two men using machine tools in the Lear Developments workshop, New York City, New York, circa 1933-1938.