[2][4][1] Their selected the colors were green and gold and the chrysanthemum as their flower (later changed to the violet).

[1] When Martin learned about the mother's group from Webb, she contacted its members and proposed that they form a Greek letter sorority.

[1][3] In addition, Martin served as the executive secretary of Tri Psi during it first several years.

[7][8][9] Martin said:I thoroughly believe in Tri Psi, for a mother is still a girl’s best friend and no barrier should be raised between them.

[2] Tri Psi held its first national convention at the Lincoln Hotel in Indianapolis, on May 20, 1920, with fifty members attending.

[16] Early activities of the sorority included hosting annual Violet Luncheons that honored graduating Tri Delta seniors.

[12][5] Tri Psi became an international sorority in 1933 with the establishment of the Canada Alpha chapter in Toronto.

[4][1][21] By October 1935, Tri Psi had chartered eighteen chapters and initiated 923 members.

[3] The gold badge is shaped like pelvic bones, represented by two inward facing half circles.

[10] The half-circles surround a line of three triangles, the shape of the Greek letter Delta (Δ).

[25] The sorority also has an official "Tri Psi Poem", written by Charles Hougham.

[5] Tri Psi holds a bi-annual national convention that is open to all of its members.

[3][10] At least ten potential members are required to establish a Tri Psi chapter.

[5] A governing council of twelve officers oversees Tri Psi at the national level.