The Eta Delta chapter (#172) at Eastern Illinois University was installed December 13, 1976 with Executive Secretary Thomas Sirridge serving as the installing officer. The Gamma Pi chapter performed the Ritual and installation ceremony. Charter members of the Eta Delta chapter include: Thomas Birkner, Charles Alday, Gary Barbre, Len Bull, David Carlson, George Forgea, Mark Gleeson, Mark Goodyear, Bradley Hulick, Kevin Kimmitt, Robin Kraft, Craig Lindvahl, Mark Lindvahl, Ronald Lively, Joseph Manfredo, Douglas Nicholson, Michael Puckett, Bill Sprenger, David Swaar, James Weir, Mark York, and Harold Hillyer.