Introduction
Sororities, in order of their appearance at Penn:
Kappa Kappa Gamma, 1890
Delta Delta Delta, 1904
Alpha Epsilon Phi, 1917
Delta Sigma Theta, 1917
Alpha Omicron Pi, 1918
Alpha Phi Sigma, 1918
Zeta Tau Alpha, 1918
Alpha Chi Omega, 1919
Chi Omega, 1919
Kappa Alpha Theta, 1919
Sigma Delta Tau, 1920
Sigma Phi Delta, 1920
Kappa Delta, 1921
Kappa Delta Gamma (local), 1921
Beta Phi (local), 1923
Alpha Kappa Alpha, 1925
Delta Phi Epsilon, 1925
Phi Sigma Sigma, 1926
Alpha Xi Delta, 1927
Delta Zeta, 1928
Delta Gamma, 1946
Alpha Phi, 1988