Frances perkins, a social worker, was the first

female vice president in u. s. history
person appointed by franklin d. roosevelt to the supreme court
person to speak out against the threat posed by nazi germany
female cabinet member in u. s. history

female Cabinet member in U.S. histroy.

When refering to a conspicuous person, you can find her biography with the outstandings facts in Internet. This time you can find in Wikipedia, among other facts, that she was the first woman appointed to the U.S. Cabinet (exectuive power).