Individual chapters may have affiliated with National Panhellenic Conference (NPC) sororities.
Aloquin was founded as a co-educational organization in 1905 at Ohio University called The Union.
As a co-ed organization, its purpose was "to raise social and moral standards of college life."
Splitting along gender lines in 1910, the men became affiliated with Phrenocon, a national association that would go on to rename itself Phi Kappa Tau in 1916, while on September 12, 1912, the 65 women of the Ohio University Union became Aloquin.
They wanted to "foster principles which will develop integrity, morality, and strength of character.
Of the OSU chapter, Chi Omega's history recalled that the Aloquins "decided that there would be many more advantages derived from membership in a national fraternity than from a local state organization."
On September 15, 1887, the sorority changed its name to Beta Delta Pi with charter members Mame Custer, Clara Fairchilds, Jessie Jones, Sue Loudon, Carrie Lovell, and Luella Peck.
A Beta chapter was chartered at Miss Gordon's Private School in Philadelphia.
The badge was silver with a monogram of the letters "encircled by a frosted wreath" (Baird's 1879).
Kappa Sigma Tau existed at Northwestern University prior to World War I.
In 1922 the group became the Kahniga fraternity, but in April of that year changed its name once again, to Kappa Sigma Tau.
Gold letters spelling Kappa Sigma Tau are placed vertically on a raised onyx crescent in the center of the badge" (Baird's 1930, p. 602).
The coat-of-arms was "on a fess between three mullets in chief and a lamp in bend a pair of balances.
Baird's (1930) described the insignia thus: "The badge is a Phi, studded with pearls, superimposed upon a plain gold Delta.
Article IV, Section VII of the Constitution (1967) explained that Phi Delta permitted honorary membership to those men and women who have shown distinguished ability in the field of education and leadership, and possess such qualities as Phi Delta stands for; and men and women who have shown sincere interest and have given service to Phi Delta, upon election.
During the 1960s, Phi Delta opened membership to African- American and Jewish women (SUNY Albany archives).
The sorority had "open membership as a fundamental principle" (Bucknell University website).
Four additional chapters were chartered: Susquehanna, Northwestern, Baldwin-Wallace, Ohio Marietta (Baird's).
Baldwin-Wallace's reorganized as local Theta Tau Delta, then affiliated with Phi Mu.