One sorority which has not been mentioned is Lambda Delta Sigma, which coincides with LDS or Latter Day Saints. I found this off a webpage, "All single women between the ages of eighteen and thirty who are willing to adhere to the ideals and standards of the Church of Jesus Christ of Latter-day Saints are encouraged to join". I couldn't find a Head Office Home Page or anything like that. Also, what is interesting is that the Brigham Young Universities do NOT permit GLOs on campus, even LDS ones. (The men's fraternity counterpart is Sigma Gamma Chi).