Mary Margaret O'Reilly
Mary Margaret O'Reilly (October 14, 1865 – December 6, 1949) was an American civil servant who served as the assistant director of the United States Bureau of the Mint from 1924 until 1938. One of the United States government's highest-ranking woman employees of her time, she worked at the Mint for 34 years, during which she often served as acting director during the Mint Director's absence.