In some ways, the feminist movement of the late 19^th and early 20^th centuries culminated with the ratification of the 19^th Amendment to the United States Constitution that finally gave American women the right to vote. Many feminists in the 1960s and 1970s felt that adding the Equal Rights Amendment would be the next step in the movement for women’s equality. So far, the ERA has failed to win passage, though it came close. This month, historian Kimberly Hamlin examines the remarkable story of the ERA to look at who supported it, who opposed it, and how those coalitions shifted across the 20th century. She reminds us why the ERA movement remains as vital today as it was over the last century.