75 Years:
Gamma Alpha, University of Miami, March 26, 1938
Gamma Beta, Washington College, April 30, 1938
Gamma Gamma, The University of Texas at El Paso, January 7, 1938
50 Years:
Delta Rho, Eastern Michigan University*, January 12, 1963
Delta Sigma, Lamar University, February 16, 1963
Delta Tau, Davis and Elkins College*, April 27, 1963
Delta Upsilon, West Virginia Wesleyan College, May 4, 1963
25 Years:
Iota Upsilon, University of Portland, April 9, 1988
75 Years:
Gamma Delta, The University of Mississippi, April 14, 1939
Gamma Epsilon, Pennsylvania State University, May 19, 1939
50 Years:
Delta Phi, Millsaps College, September 20, 1964
Delta Chi, William Jewell College, September 26, 1964
Delta Psi, Samford University, September 17, 1964
Delta Omega, Westminster College, September 30, 1964
Zeta Alpha, University of Evansville, September 27, 1964
Zeta Beta, Thiel College, September 28, 1964
Zeta Gamma, Youngstown State University, October 3, 1964
25 Years:
Iota Phi, North Carolina State University, February 4, 1989
Iota Chi, Middle Tennessee State University, October 13, 1989
Iota Psi, Rochester Institute of Technology, November 3, 1989
*--chapter no
longer active