[Corsulian]

Thank you - that narrows it to the chapters below (sorry the formatting is all weird).

Chapter School Charter Range
Psi University of Virginia 1907-1916, 1921-1936, 1954-1981, ?-Present
Epsilon Delta Eastern Illinois University 1930-?
Chi Triton Arizona State University 1949-?, 2008-Present
Epsilon Upsilon UW-Whitewater 1950-?
Phi Delta Black Hills State College 1955-?
Phi Epsilon Rider College 1956-?
Phi Eta Clarion University 1959-?
Sigma Chi Shepherd University 1960-?
Beta Pentaton East Stroudsburg University 1963-?, 2003-Present
Gamma Pentaton University of Utah 1963-?
Phi Rho Chadron State College 1963-?
Phi Sigma Hillsdale College 1965-?
Phi Phi UW-Oshkosh 1965-?
Kappa Pentaton UC Santa Barbara 1966-?, 2004-Present
Sigma Beta Southwest Missouri State University 1967-?
Sigma Delta St. Norbert College 1968-?
Phi Pentaton University of Arizona 1968-?, 1988-1995
Sigma Epsilon Ferris State University 1968-?
Sigma Gamma Wayne State College 1969-?
Sigma Eta Southeast Missouri State University 1969-?
Psi Pentaton Memphis State University 1969-?
Sigma Lambda University of Minnesota-Morris 1969-?
Sigma Mu Manhattan College 1969-?
Sigma Nu Slippery Rock University 1970-?
Phi Omega Minnesota State University-Moorhead 1970-?
Phi Psi College of St. Thomas 1970-?
Iota Hexaton Fairleigh Dickinson University 1973-?
Lambda Hexaton St. Joseph's University 1976-?
Mu Hexaton Radford University 1976-?, 2007-Present
Xi Hexaton Clinch Valley College 1976-?
Pi Hexaton Occidental College 1979-?
Chi Hexaton Virginia Commonwealth University 1988-?
Psi Hexaton McGill University 1989-?
Omega Hexaton University of California at Irvine 1989-?
Delta Septaton UW-Green Bay 1990-?
Zeta Septaton Johnson & Wales University 1990-?
Theta Septaton Marist College 1992-?