We used to use this song for part of our pref ceremony. We were always told that is was written by a sister at Sam Houston State Univ in Huntsville - don't know if that is true. This was about 10 years ago, but I know that Epsilon Zeta (Tex State) still used it last year for recruitment. Maybe you could try to contact someone at those schools. I love the song! I could still sing it today, but I don't think I'd do a very good job.
Good luck with your search!