Just to help you out
Texas A&M:
DZ (first one on campus), ADpi, KKG, XO, AGD (closed), and I think Aphi(closed) -1975
Theta-1976
tri delt, AXO in 1981
Pi Phi in 1985
DG in 1997
KD in 1999
GphiB-2003
No sororities existed before 1975
also, Southwestern University in Georgetown currently has DDD, ZTA, AxiD and ADpi, the rest are closed