Harriet Ross Tubman, 1911. In my opinion one the most interesting women in the world, past or present. Its difficult to summarize her bio in 500 characters. She was an adventurer, humanitarian, reformer, spy & hero. The links give an account of her life & accomplishments. I chose this image because it fits her other name, "Moses". http://www.math.buffalo.edu/~sww/0history/hwny-tubman.html, http://www.pbs.org/wgbh/aia/part4/4p1535.html, http://www.pbs.org/wgbh/aia/part4/4p1535.html.