Photograph of Learadio radio and navigation equipment, consisting of a transmitter, receiver, and direction finder, circa 1936-1939. The verso caption notes that this equipment was developed by "myself" (William P. Lear) and Reeder Nichols for the…
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…
Photograph of a Learadio airport telephone transmitter, circa 1931-1939. Inscription: "This 15-watt power transmitter was habitually able to work aircraft 250 miles away. Freq. 278 kc."
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 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 /…
Items from Box 12, Folder 13 of the William P. and Moya Olsen Lear Papers, circa 1939-1944. Contains a Learadio dealer franchise agreement form (blank) and a page from Appendix B of a Lear Avia contract. Two total documents.