Phi Sigma Kappa founded March 15, 1873 at Massachusetts Agricultural College (now the University of Massachusetts Amherst).
Phi Sigma Epsilon founded February 20, 1910 at Emporia Teacher's College (Now Emporia State University -Emporia, Kansas)
Phi Sigma Kappa and Phi Sigma Epsilon merged in the largest fraternity merger in history -August 1985
Epsilon Tau Chapter-Ball State University
Founded Locally as Delta Phi Sigma-1926
Chartered as the Tau Chapter of Phi Sigma Epsilon-1948
Joined the ranks of Phi Sigma Kappa-1985
