Rosie the Riveter was created as a symbol of strength in American women to encourage them to contribute to the war effort. The artist Norman Rockwell found Mary Doyle, a thin typist, to be the model for Rosie. During World War II, over 6 million women worked in factories performing jobs like mechanical work and operating heavy machinery to help supply soldiers and boost the economy. Women helped build over 300,000 airplanes, 3,300 ships, and 44 billion rounds of ammunition through their efforts.