This past year there was a heated debate about changing the face on the US $20 bill. The agenda of the times felt that a woman's face should be on some of our currency. The consensus ended up with Harriet Tubman as a worthy representative. However much as they like to claim firsts, this time the claim of first woman on our currency just displays their lack of knowledge of our currency and our history.
The $1 silver certificate first printed in 1886 carried the face of a woman; Martha Washington. If you happen to have one of these they value between $75 and $1500 depending on the quality/condition of the bill.