[seraphimsprite]

OK, I've seen this in a whole bunch of other threads and thought we needed one too. If you can fill in any of the dates, please post them. The only closing dates I know are the recent ones. Thanks!

Boldface denotes active chapter

Alpha (1874-1984) - Colby College
Beta (1890-1893) - Colby College - absorbed into Alpha
Gamma (1892-1893) - Colby College - absorbed into Alpha
Delta (1904) - Boston University
Epsilon (1905-1998?) - Syracuse University (New York)
Zeta (1906) - George Washington University (DC)
Eta (1906) - Illinois Wesleyan University
Theta (1906) - University of Illinois
Iota (1908-1993) - University of Denver
Kappa (1908-1910?) - Brown University (Rhode Island)
Lambda (1910) - University of California, Berkeley
Mu (1910) - University of Washington
Nu (1911-1968?) - Middlebury College (Vermont)
Xi (1913) - University of Kansas
Omicron (1913-1956?) - Tufts University (Massachusetts)
Pi (1915-1930?) - Stanford University
Rho (1917-1940?) - Randolph-Macon Women's College (Virginia)
Sigma (1917-1964?) - Southern Methodist University (Texas)
Tau (1918-1994) - Indiana University - 2016 recolonization
Upsilon (1918) - Oregon State University
Phi (1919) - University of Rhode Island
Chi (1919-1998?) - Ohio State University
Psi (1919-1958?) - University of Wisconsin
Omega (1920-1999) - Florida State University

Alpha Beta (1920-1964?) - University of Buffalo
Alpha Gamma (1921) - Washington State University
Alpha Delta (1921) - University of Tennessee
Alpha Epsilon (1921) - Iowa State University
Alpha Zeta (1921-1955?) - Cornell University (New York)
Alpha Eta (1921-1961?) - University of Minnesota
Alpha Theta (1922) - University of Louisville
Alpha Iota (1922-2001) - Miami University (Ohio)
Alpha Kappa (1923-1972?) - University of Nebraska Lincoln
Alpha Lambda (1923-1976?) - Adelphi University (New York)
Alpha Mu (1924) - University of Michigan
Alpha Nu (1924-1981?) - University of Montana
Alpha Xi (1924-1932?) - University of Iowa
Alpha Omicron (1925-1993?) - University of California, Los Angeles
Alpha Pi (1925-1940?) - Ohio Wesleyan University
Alpha Rho (1926-1940?) - Vanderbilt University (Tennessee)
Alpha Sigma (1926) - Westminster College (Pennsylvania)
Alpha Tau (1927) - Michigan State University
Alpha Upsilon (1928-1936?) - University of North Dakota
Alpha Phi (1928-2004) - University of Oregon - 2015 recolonization
Alpha Chi (1929) - Georgetown College (Kentucky)
Alpha Psi (1931-1967?) - Duke University
Alpha Omega (1932-1995?) - University of Alabama

Beta Beta (1932-1936?) - University of South Carolina
Beta Gamma (1933-1955?) - University of Manitoba
Beta Delta (1939-1969?) - University of Miami
Beta Epsilon (1939) - Louisiana Tech University
Beta Zeta (1940) - University of Maryland
Beta Eta (1944) - University of Massachusetts Amherst
Beta Theta (1944) - Marietta College (Ohio)
Beta Iota (1945-1967?) - Carnegie-Mellon University (Pennsylvania)
Beta Kappa (1947-1997?) - Colorado State University
Beta Lambda (1947-1969?) - Utah State University
Beta Mu (1947) - Culver-Stockton College (Missouri)
Beta Nu (1947) - Bradley University (Illinois)
Beta Xi (1947-2010) - University of Memphis - 2015 recolonization
Beta Pi (1947-1959?) - Illinois Institute of Technology
Beta Rho (1948-1971?) - San Jose State College
Beta Sigma (1948) - Purdue University (Indiana)
Beta Tau (1949) - University of Florida
Beta Upsilon (1949) - Ohio University
Beta Phi (1950-1964?) - Idaho State University
Beta Chi (1950-2002) - University of California, Santa Barbara
Beta Psi (1950-2007) - San Diego State University
Beta Omega (1950) - University of Nebraska Omaha

Gamma Alpha (1950) - University of Northern Colorado
Gamma Beta (1950) - Western Michigan University
Gamma Gamma (1951) - Indiana State University
Gamma Delta (1952) - Thiel College (Pennsylvania)
Gamma Epsilon (1952) - Indiana University of Pennsylvania
Gamma Zeta (1954) - Northern Illinois University
Gamma Eta (1954) - Ball State University (Indiana)
Gamma Theta (1955) - California State University, Long Beach
Gamma Iota (1955-1984?) - Texas Tech University
Gamma Kappa (1955) - Southern Illinois University
Gamma Lambda (1956) - East Tennessee State University
Gamma Mu (1956) - Eastern Illinois University
Gamma Nu (1956-1990?) - Gettysburg College (Pennsylvania)
Gamma Xi (1957-1991?) - Lambuth College (Tennessee)
Gamma Omicron (1957-1959?) - Morningside College (Iowa)
Gamma Pi (1958-2014) - Kentucky Wesleyan College
Gamma Rho (1958-1991?) - Western Carolina University (North Carolina)
Gamma Sigma (1959-1965?) - Carroll College (Wisconsin)
Gamma Tau (1959) - Midwestern State University (Texas)
Gamma Upsilon (1959) - California University of Pennsylvania
Gamma Phi (1960) - North Carolina State University
Gamma Chi (1960-1988?) - Stephen F. Austin University (Texas)
Gamma Psi (1961) - Tennessee Wesleyan College
Gamma Omega (1962) - Wittenberg University (Ohio)

Delta Alpha (1959) - Eastern Michigan University
Delta Beta (1959-1984?) - Marshall University (West Virginia)
Delta Gamma (1959-1975?) - Northwestern Oklahoma State University
Delta Delta (1959) - Central Michigan University
Delta Epsilon (1959-1974?) - Emporia State University (Kansas)
Delta Zeta (1959-1985?) - Southeastern Oklahoma State University
Delta Eta (1959) - Central Missouri State University
Delta Theta (1959) - Truman State University (Missouri)
Delta Iota (1959) - California State University, Chico
Delta Kappa (1959-1968?) - Black Hills State College (South Dakota)
Delta Lambda (1959-1973?) - Wayne State University (Michigan)
Delta Mu (1959-1995?) - Northwestern State University (Louisiana)
Delta Nu (1959) - Longwood College (Virginia)
Delta Xi (1959-1970?) - Western State College (Colorado)
Delta Omicron (1959-1976?) - Fort Hays State College (Kansas)
Delta Pi (1959) - Lock Haven University (Pennsylvania)
Delta Rho (1959) - James Madison University (Virginia)
Delta Sigma (1959-2011) - Western Illinois University
Delta Tau (1959) - University of Central Arkansas
Delta Upsilon (1959) - Southwest Missouri State University
Delta Phi (1959-1976?) - Fairmont State College (West Virginia)
Delta Chi (1959) - University of Central Oklahoma
Delta Psi (1959) - Radford University (Virginia)
Delta Omega (1959-1998?) - Waynesburg College (Pennsylvania)

Epsilon Alpha (1962) - Lenoir-Rhyne College (North Carolina)
Epsilon Beta (1962) - University of New Orleans
Epsilon Gamma (1962-1990?) - Southwestern Oklahoma State University
Epsilon Delta (1964) - Susquehanna University (Pennsylvania)
Epsilon Epsilon (1964) - University of Georgia
Epsilon Zeta (1965) - Western Kentucky University
Epsilon Eta (1965) - University of Findlay (Ohio)
Epsilon Theta (1966-1971?) - University of Southwestern Louisiana
Epsilon Iota (1966-1971?) - Athens College (Alabama)
Epsilon Kappa (1966-1984?) - Transylvania University (Kentucky)
Epsilon Lambda (1967) - California State University, Sacramento
Epsilon Mu (1968-2004, 2012) - University of Missouri
Epsilon Nu (1968-1984?) - University of Maine
Epsilon Xi (1969-1983?) - Adrian College (Michigan)
Epsilon Omicron (1969-1983) - Southwest Texas State University
Epsilon Pi (1969-1972?) - Northern Michigan University
Epsilon Rho (1970-1977?) - Eastern Washington State College
Epsilon Sigma (1970-1983?) - Armstrong State College (Georgia)
Epsilon Tau (1971) - California State University, Fullerton
Epsilon Upsilon (1976-1990?) - Missouri Western State College
Epsilon Phi (1971-1983?) - University of Southern Indiana
Epsilon Chi (1972) - Virginia Tech University
Epsilon Psi (1972-1982?) - Purdue University, Calumet (Indiana)
Epsilon Omega (1973) - California Polytechnic State University, San Luis Obispo

Zeta Alpha (1973) - Indiana University Southeast
Zeta Beta (1974-1978?) - University of Arkansas at Monticello
Zeta Delta (1974-1988?) - University of Tennesse, Martin
Zeta Epsilon (1976-2000) - California State University, Northridge
Zeta Zeta (1976) - Babson College (Massachusetts)
Zeta Eta (1977-1981?) - California State University, Stanislaus
Zeta Theta (1977-1982?) - Tri-State University (Indiana)
Zeta Iota (1977) - Elmhurst College (Illinois)
Zeta Kappa (1977) - Angelo State University (Texas)
Zeta Lambda (1977-1988) - Dartmouth College (New Hampshire)
Zeta Mu (1978) - University of California, San Diego
Zeta Nu (1978) - University of Texas, San Antonio
Zeta Xi (1978-1983?) - Long Island University
Zeta Omicron (1978) - University of Arizona
Zeta Pi (1980) - Colorado School of Mines
Zeta Rho (1980-1989?) - Lafayette College (Pennsylvania)
Zeta Sigma (1980-1984?) - University of Alabama/Birmingham - 2015 recolonization
Zeta Tau (1980-1983?) - University of Southern Colorado
Zeta Upsilon (1981) - California State Polytechnic University, Pomona
Zeta Phi (1982) - Rutgers, The State University of New Jersey
Zeta Chi (1982-1997) - Florida Institute of Technology
Zeta Psi (1983-1993?) - Cleveland State University
Zeta Omega (1984-1993) - Louisiana State University

Theta Alpha (1985) - Appalachian State University (North Carolina)
Theta Beta (1986) - University of LaVerne (California)
Theta Gamma (1986-2003) - University of Louisiana, Monroe
Theta Delta (1986) - University of Delaware
Theta Epsilon (1986) - University of California, Riverside
Theta Zeta (1987) - University of Virginia
Theta Eta (1987) - University of Nevada, Las Vegas
Theta Theta (1987) - Albright College (Pennsylvania)
Theta Iota (1988) - State University of New York, Fredonia
Theta Kappa (1989-1994?) University of Southern California
Theta Lambda (1989) - Massachusetts Institute of Technology
Theta Mu (1989) - University of North Carolina, Charlotte
Theta Nu (1989-1994?) - Baylor University (Texas)
Theta Xi (1989) - Auburn University (Alabama)
Theta Omicron (1989-2002, 2012) - Arizona State University
Theta Pi (1989) - State University of New York, Genesco
Theta Rho (1990-2010) - University of Kentucky
Theta Sigma (1990) - University of Hartford (Connecticut)
Theta Tau (1991) - Kansas State University
Theta Upsilon (1991) - Bowling Green State University (Ohio)
Theta Phi (1991) - University of Tennessee, Chattanooga
Theta Chi (1991) - West Virginia University
Theta Psi (1992) - Pennsylvania State University
Theta Omega (1992-1998?) - Loyola University (Illinois)

Kappa Alpha (1995) - Northwest Missouri State University
Kappa Beta (1996) - Grand Valley State University (Michigan)
Kappa Gamma (1996-2004) - University of Dayton (Ohio)
Kappa Epsilon (1997-2000?) - Pepperdine University (California)
Kappa Zeta (1998) - Elon University (North Carolina)
Kappa Eta (1998) - Texas Christian University
Kappa Theta (1999-2012) - Saint Louis University
Kappa Iota (2002) - University of Pennsylvania
Kappa Lambda (2004) - North Georgia College and State University
Kappa Mu (2006) - Duquesne University (Pennsylvania)
Kappa Nu (2006) - Marquette University (Wisconsin)
Kappa Xi (2006) - University of Nevada, Reno
Kappa Omicron (2008) - Florida International University
Kappa Pi (2009) - Clemson University (South Carolina)
Kappa Rho (2009) - University of California, Irvine
Kappa Tau (2011) - University of West Georgia
Kappa Upsilon (2011) - The College of New Jersey
Kappa Phi (2011) - Florida Atlantic University
Kappa Psi (2011) - Indiana University-Purdue University-Indianapolis
Kappa Omega (2013) - Northeastern University (Massachusetts)

Lambda Alpha (2014) - Spring Hill College (Alabama)
Lambda Beta (2014) - Coastal Carolina University (South Carolina)
Lambda Gamma (2014) - Robert Morris University (Pennsylvania)
Lambda Delta (2014) - University of Houston (Texas)

Planned colonizations:
College of Charleston (2015)
American University (2016)

ETA: I've figured out a way to at least guess at the dates for the chapters using the directory on our website. But any confirmation or correction info is much appreciated.