I went off Elise's list of active chapters on www.alphagam.net and took the years ending in "3" or "8":

95 years
Delta Chapter -- The University of Minnesota (February 14, 1908)
Epsilon Chapter -- The University of Kentucky (May 14, 1908)
Zeta Chapter -- Ohio University (June 2, 1908)

90 years
Mu Chapter -- Brenau University (May 2, 1913)

85 years
Sigma Chapter -- University of Illinois (June 12, 1918)

80 years
Gamma Alpha -- The University of Georgia (May 29, 1923)
Delta Beta -- Washington State University (June 8, 1923)

75 years
Epsilon Gamma -- The University of Denver (April 4, 1928)

55 years
Alpha Omicron -- West Virginia Wesleyan College (March 20, 1948)
Epsilon Zeta -- Arkansas State University (May 8, 1948)

45 years
Delta Theta -- University of Idaho (August 26, 1958)

35 years
Epsilon Xi -- East Central University (April 20, 1968)
Beta Xi -- Purdue University (April 27, 1968)
Gamma Omicron -- Eastern Kentucky University (October 26, 1968)

30 years
Beta Omicron -- Illinois State University (March 10, 1973)

25 years
Gamma Omicron -- University of Alabama at Birmingham (May 20, 1978)

20 years
Theta Delta -- North Georgia College (March 6, 1983)
Delta Nu -- University of Calgary (May 14, 1983)

15 years
Zeta Sigma -- Northwood University (October 29, 1988)
Beta Tau -- Ball State University (November 5, 1988)

10 years
Epsilon Omega -- Truman State University (April 16, 1993)
Theta Nu -- Virginia Commonwealth University (October 30, 1993)

5 years
Theta Rho -- Barry University (March 28, 1998)
Theta Sigma -- Valdosta State University (May 15, 1998)

***Before anyone asks, YES I WAS BORED AT WORK. I apologize in advance for any typos and errors!***

Red and buff roses to all our milestone chapters this year!