St. Anthony Hall is a national college literary society at elite colleges in the United States of America. The society's chapters go by different names on different campuses, including Saint Anthony Hall, The Order of St. Anthony, the Fraternity of Delta Psi (ΔΨ), St. A's, the Hall and the Number Six Club. St. Anthony Hall's activities foster the social and intellectual development of its undergraduate members by encouraging individual expression and promoting the exchange of ideas by providing a forum for discussion and presentations. The first, or 'Alpha' Chapter was founded at Columbia University on January 17, 1847, which is the feast day of St. Anthony. As of 2015, there are 11 active undergraduate chapters—several have a public literary and arts presence, some resemble traditional campus fraternities, while others are purely secret societies. The organization welcomes this diversity, while allowing each chapter to determine its own identity and membership requirements. Since 1969, five previously all-male chapters have opened to women, three 19th century chapters have been refounded as co-ed, and three chapters have remained all-male—the latter group still recognizing the authority of female national officers. St Anthony Hall was the first formerly white fraternity at both the University of North Carolina (1967) and the University of Mississippi to admit African American members.