sentences:  He lived on his family's hayfarm in Beaverton, on land that amounted to at least as early as the mid-1920s.He developed an interest in aviation as a teenager.In the mid-1910s, he became friends with some students at the Adcox School of Aviation, in Portland, and after learning that they were assembling an experimental glider, he invited them to his family's hayfield for test flights in which a galloping horse would launch the glider for flights of up to a thousand feet.