90th Anniversary (Chartered 1929)
March 1 - Chi - Pennsylvania State University
March 17 - Psi - Duquesne University
December 28 - Beta Beta - Manhattan College
70th Anniversary (Chartered 1949)
April 7 - Beta Iota - Utica College
November 1 - Beta Lambda - St. Francis University
60th Anniversary (Chartered 1959)
June 5 - Beta Pi - St. John's University
November 8 - Beta Rho - Gannon University
30th Anniversary (Chartered 1989)
August 22 - Gamma Pi - Ramapo State College
August 22 - Gamma Sigma - St. John's University (S.I.)
25th (SILVER) Anniversary (Chartered 1994)
February 14 - Delta Omicron - Rutgers University
20th Anniversary (Chartered 1999)
April 10 - Delta Upsilon - Robert Morris University
5th Anniversary (Chartered 2014)
February 21 - Epsilon Delta - Montclair State University