Thanksgiving Eve 1888 saw the establishment of Delta Delta Delta at Boston University by two seniors who came up with the idea, created the ritual, designed the structure, and strategized for growth across the nation for the newly created women's fraternity. Since 1891, Tri-Delta has been active in the all-sorority movement, encouraging steady growth and development of women's fraternities. Tri-Delta was established at UCSB in 1987.

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