A look back at the week in history
Sept. 19, 1957 The United States conducts its first underground nuclear test in the Nevada desert.
Sept. 21, 1981 The Senate unanimously confirms Sandra Day O'Connor to be the first female justice on the Supreme Court.
Sept. 22, 1961 Congress formally authorizes the Peace Corps as proposed by President Kennedy.
Sept. 24, 1890 The Church of Jesus Christ of Latter-day Saints issues its "manifesto" against polygamy.