Delta Chi (ΔΧ) (del-ta kai) or D-Chi is an international Greek letter college social fraternity formed on October 13, 1890, at Cornell University, initially as a professional fraternity for law students. On April 29, 1922, Delta Chi became a general membership social fraternity, eliminating the requirement for men to be studying law, and opening membership to all areas of study. On April 22, 1929 Delta Chi became the first international fraternity to abolish "hell week". Delta Chi is a charter member of the North-American Interfraternity Conference (NIC). The Fraternity is headquartered at 314 Church Street in Iowa City, Iowa 52244. As of Spring 2011, Delta Chi has initiated over 106,000 members.