Congratulations to all chapters celebrating anniversaries in December!
- 130 years: Mu Chapter (Presbyterian) – December 9, 1890
- 118 years: Alpha Gamma Chapter (Louisiana State) – December 11, 1902
- 111 years: Alpha Nu Chapter (Missouri) – December 15, 1909
- 99 years: Beta Sigma Chapter (Carnegie Mellon) – December 5, 1921
- 96 years: Gamma Delta Chapter (Arizona) – December 1, 1924
- 91 years: Gamma Xi Chapter (Washington State) – December 19, 1929
- 71 years: Delta Mu Chapter (Southern Mississippi) – December 10, 1949
- 60 years: Epsilon Omicron Chapter (Stephen F. Austin State) – December 17, 1960
- 59 years: Epsilon Sigma Chapter (Tennessee-Martin) – December 9, 1961
- 58 years: Epsilon Upsilon Chapter (Gannon) – December 1, 1962
- 57 years: Zeta Beta Chapter (Delta State) – December 15, 1963
- 34 years: Iota Beta Chapter (California State-Fresno) – December 6, 1986
- 26 years: Kappa Epsilon Chapter (Rockhurst) – December 17, 1994
