Beta Tau - Philander Smith College - Little Rock, Arkansas (March 13,1947)
Gamma Sigma - University of Arkansas at Pine Bluff - Pine Bluff, Arkansas ( April 30, 1949)
Theta Alpha - Henderson State University - Arkadelphia, Arkansas (March 15, 1975)
Theta Epsilon - University of Arkansas at Little Rock - Little Rock, Arkansas (May 25, 1975)
Theta Mu - Arkansas State University - Jonesboro, Arkansas (December 11, 1975)
Iota Gamma - University of Central Arkansas - Conway, Arkansas (November 19, 1977)
Iota Tau - University of Arkansas - Fayetteville, Arkansas (April 8, 1979)
Kappa Eta - University of Arkansas at Monticello - Monticello, Arkansas ( September 6, 1980)
Lambda Kappa - Southern Arkansas University - Magnolia, Arkansas (September 11, 1982)
| Single Letter Series | Alpha Series | Beta Series |
| Gamma Series | Delta Series | Epsilon Series |
| Zeta Series | Eta Series | Theta Series |
| Iota Series | Kappa Series | Lambda Series |
| Mu Series | Nu Series | Xi Series |
1. Alpha-Indiana
University-Bloomington, Indiana (January 5, 1911)
2. Beta-University of Illinois-Champaign, Illinois (February 8, 1913)
3. Gamma-University of Iowa-Iowa City, Iowa (December 29, 1913)
4. Delta-Wilberforce University-Wilberforce, Ohio (January 22, 1915)
5. Epsilon-Lincoln University-Lincoln, Pennsylvania (December 4, 1915)
6. Zeta-Ohio
State University - Columbus, Ohio (December 15, 1915)
7. Eta-University of Nebraska-Lincoln, Nebraska (March 12, 1916)
8. Theta-Northwestern University-Evanston, Illinois (April 21, 1917)
9. Iota-University of Chicago-Chicago, Illinois (February 8, 1918)
10. Kappa-Meharry Medical College-Nashville, Tennessee (February 19, 1919)
11. Lambda-Temple University-
Philadelphia, Pennsylvania (February 20, 1920)
12. Mu-University of Kansas-Lawrence, Kansas (March 27, 1920)
13. Nu-Purdue University-
West Lafayette, Indiana (October 5, 1920)
14. Xi-Howard University-Washington, D.C. (December 27, 1920)
15. Omicron-Columbia University-New York, New York (February 27, 1921)
16. Pi-Morehouse College-Atlanta, Georgia (April 23, 1921)
17. Rho-Washburn College-Topeka, Kansas (November 6, 1921)
18. Sigma-University of Michigan-Ann Arbor, Michigan (1922)
19. Tau-West Virginia State College-Institute, West Virginia (January 26, 1923)
20. Upsilon-Los Angeles State University-Sepulveda, California (April 25, 1923)
21. Phi-University of Buffalo-Buffalo, New York (January 19, 1924)
22. Chi
-Boston University-Boston, Pennsylvania (February 15, 1924)
23. Psi-University of Minnesota-Minneapolis, Minnesota (April 19, 1924)
24. Omega-Drake University-Des Moines, Iowa (November 28, 1925)