IOWA has:
ADPi
AXO
AZD
AEPhi
APhi
DG
DZ
Tri-Delta
GPhiB
KKG
KAT
Chi-O
PiPhi
ZTA
At one time we had (the ones I know of): Phi Mu, Alpha Gamma Delta, Kappa Delta, Sigma Kappa
So we've never really come colse to having all 26 - but I think we have a pretty good group
