Matilda Joslyn Gage

Matilda Joslyn Gage was an American writer and activist. She is mainly known for her contributions to women's suffrage in the United States, but also campaigned for Native American rights, abolitionism, and freethought. She is the eponym for the Matilda effect, which describes the tendency to deny women credit for scientific invention. She influenced her son-in-law L. Frank Baum, the author of The Wonderful Wizard of Oz.