When each org was recognized at Iowa:
Sororities:
AXO - 1911
ADPi - 1915
APhi- 1961
AXiD - 1912
XO - 1919
Tri-Delt - 1904
DG- 1886
DZ - first recognized in 1913 , left campus after 98/99 school year (righ after our 85th year at Iowa

), returned in fall of 2000

GPhiB - 1915
KAT - 1926
KKG - 1882 *2nd Oldest*
*PiPhi - 1882*Oldest Sorority at Iowa*
ZTA - 1922
Fraternities:
Acacia - 1909
AEPi - 2000
AKL - 1989
ATO - 1915
*Beta - 1866*Oldest Fraternity at Iowa*
DX - 1912
DU - 1925
KS - 1967
LXA - 2001
FIJI - 1873
PhiPsi - 1867 *2nd Oldest* though i
think they left campus and returned
PKT - 1914
Pike - 1929
SAE - 1905
SAM - 1985
SX - 1897
SN - 1893
SigEp - 1917