Illustrator and graphic designer Ann Shen’s drawings of bad girls throughout history. (Though “badass” is more appropriate than “bad,” strictly scientifically speaking.)
For some substantiation on the badassery of the above, see Amelia Earhart on marriage,Ada Lovelace on science and spirituality,Nellie Bly’s groundbreaking journalistic feistiness, and Eleanor Roosevelt on happiness and conformity and her controversial love letters to Lorena Hickok.