Who is Margaret Ray Ringenburg from The Greatest Generation and what is their importance?

Margaret Ray Ringenburg is from Hoagland, Indiana and becomes interested in flying as a child and secures her flying license after graduating from high school and enters the WASPS, testing and transporting planes for the military. After the war, she becomes a flight instructor. She participates in the Powder Puff Derby for twenty years and at the age of seventy two, participates in a round-the-world race.