Which Woman Should Replace Jackson on the $20 Bill?

Maybe you've seen or heard this story floating around the interwebs, or maybe this is the first you're reading about it. There is a movement to replace Jackson on the $20 bill with a woman.

The official name of this group is "Woman on 20s". As of a topic of discussion, I'm curious as to whom you think would make a good choice. I'm going with Harriet Tubman for her bravery during slavery. The obvious others would be Susan B. Anthony, Rosa Parks and Sacagawea but maybe you have a lesser known woman in mind, let me know.

Comment with your answer on the Moose Facebook fan page.