Katherine Stinson (1891-1977) and Marjorie Stinson (1896-1975)
Katherine was the fourth woman, in 1912, and Marjorie the ninth woman, in 1914, in United States to earn pilot licenses. Known as the Flying Schoolgirl, Katherine thrilled spectators in this country and in Japan and China with aerobatic stunts. She was the first woman to perform a loop-de-loop and the first female pilot commissioned to fly U.S. mail. Marjorie, also an airmail carrier and performer, established herself as a flight instructor at the family’s aviation school in Texas, where she trained the Royal Canadian Fying Corps.