Women's History Month: Celebrating women in American history

Kamala Harris, first U.S. female vice president. ( AP Photo/Susan Walsh)

Hillary Rodham Clinton, former U.S. Secretary of State and first woman to win presidential nomination for a major political party. (David Becker/Getty Images)

Simone Biles, gymnast and Olympian makes history as the first American to win a medal at every event at the World Gymnastics Championships. (AP Photo/Ashley Landis)

Michelle Obama, former first lady. (Photo Bank via Getty Images)

Oprah Winfrey, host and entrepreneur. (Getty Images)

Nancy Pelosi, first U.S. speaker of the house (D-Calif.). (Tom Williams/CQ-Roll Call, Inc via Getty Images)

Associate Justice Sonia Sotomayor. (MANDEL NGAN/AFP )

Sandra Day O'Connor, the first woman on the Supreme Court. ( REUTERS/Rick Wilking )

Madeline Albright, first female secretary of state. (David M. Russell/CBS via Getty Images)

Geraldine Ferraro, first woman to run for U.S. vice president on a major party ticket. (Associated Press)

Sally Ride, the first American woman in space. (The photograph was taken by one of her four fellow crewmembers with a 35mm camera.)

Billie Jean King in action during a semi-final in the women's singles championship at Wimbledon, on July 2, 1964. ((Photo by Dennis Oulds/Central Press/Getty Images )

Gloria Steinem, American feminist journalist and socio-political activist. (AP Photo/Andy Wong)

Lucille Ball, actress and comedian. (Getty Images)

Helen Keller (left), disability rights advocate. (Getty Images)

Amelia Earhart, first American woman to fly solo across the Atlantic Ocean. (AP)

Rosa Parks, civil rights activist. (Getty Images)

Harriet Tubman, abolitionist, integral to the Underground Railroad network. (MPI/Getty Images)

Susan B. Anthony, women's suffrage leader. (PhotoQuest/Getty Images)

Eleanor Roosevelt, former first lady, diplomat and activist. (Afro American Newspapers/Gado/Getty Images)

Emily Dickinson, American poet. (Archive/UIG via Getty Images)