Browse Items (57 total)

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]."

Advertisement poster for Learadio aircraft equipment, circa 1931-1939.

Check and agreement between the Stinson Aircraft Corporation and the Lear Development Company, circa 1933. Item has been de-framed but remains attached to mountboard.

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.

Photograph of people working in the Lear Developments workshop, New York City, New York, circa 1933-1938. Machine tools and device casings are visible on the workbenches.

Photograph of people working in the Lear Developments workshop, New York City, New York, circa 1934-1939. Electronic components, device casings, and machine tools are visible on the workbenches.Inscription on verso: "Bill Lear's Lear Developments…

Items from Box 1, Folder 14 of the William P. and Moya Olsen Lear Papers, June to July 1935. Contains four typed letters between Gordon Scheibell and N. E. Wunderlich and a page of notes for a therapeutic and beauty treatment involving electrodes.…

Photograph of assorted Learadio devices, circa 1935. Pictured devices include the Model R-3 aircraft receiver, T-30 radio unit, and a shieled loop antenna.Inscription on verso: "Lear equip / circa 1935."