Browse Items (60 total)

Photograph of an aircraft cockpit outfitted with Learadio equipment, circa 1931-1939. Arrows point to the microphone and support and the interphone and radio transmit control and jack box.Inscription: "NA-44 / Learadio equipment installation / Rear…

Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939. Two arrows point to the direction indicator and the interphone and radio transmit control switch.Inscription: "NA-44 / Learadio equipment installation /…

Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939.

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."

Photograph of the Boeing XB-15 (nose number 46), a Stinson aircraft, and several Douglas C-47 Skytrains at Bolling Field, Washington, D.C., circa 1938. An emblem depicting a Native American with a bow and arrow is painted on the XB-15's nose. The…

Photograph of the chassis of a Model L Lear-o-Scope, circa 1931-1939. The verso inscription, which was written by William P. Lear, describes the development of the device.Inscription on verso: "Here is chassis of Model L Lear-o-Scope. The layout was…

Photograph of several Douglas C-47 Skytrain aircraft and a Learadio Beech B17L Staggerwing aircraft (tail number NC 15405) at Bolling Field, Washington, D.C., circa 1938.Inscription on verso: "Douglas Army transport ships and Learadio Beechcraft.…

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 the internal components of a Lear device, circa 1931-1939.

Photograph of a Lear Developments aircraft transmitter, circa 1931-1939. The verso caption notes that this transmitter was developed for the Flight International Corporation and describes the device's components and specifications.Typed caption on…