From Baird's Manual of AMERICAN College Fraternities 20th Edition (1991)
SIGMA IOTA was established in 1904 at Louisiana State University as a secret society for Spanish-American Students, under the name Sociedad Hispano-Americana. In 1911 it was changed to a Greek-letter fraternity. Its membership was composed of Spanish-American youths studying in all the universities of America and Europe. It was organized to promote friendship and give help to the Spanish-American students attending foreign universities.
- Alpha Alpha, Louisiana State University
- Nu Epsilon, Tulane University
- Upsilon Lambda, Loyola University New Orleans
- Alpha Omega, University of Florida
Chapters were later located as follows:
- Nu Alpha, Alabama Polytechnic Institute
- Nu Beta, Syracuse University
- Nu Gamma, Rensselaer Polytechnic Institute
- Nu Delta, Atlanta Medical School
- Nu Zeta, University of Pennsylvania
There were also chapters in Belgium, Switzerland, and Guatemala City. Conventions were held in Baton Rouge in 1928 and in New Orleans 1929. In 1931 Sigma Iota joined Phi Lambda Alpha Fraternity, which later changed its name to Phi Iota Alpha.
From Baird's Manual of American College Fraternities 10th Edition (1923)
SIGMA IOTA - (Spanish American Students) - The Sigma Iota fraternity was established in 1904 at the Louisiana State University, Baton Rouge, LA. as a secret society for the Spanish-American students under the name "Sociedad Hispano-amernicana." In 1911 it was changed to a Greek letter fraternity.
Nu Alpha, Alabama Polytechnic Institute
Nu Beta, Syracuse University
Nu Gamma, Rensselaer Polytechnic Institute
Nu Delta, Atlanta Medical School
Nu Zeta, University of Pennsylvania
Epsilon Alpha Universite de Geneva (Switzerland)
Epsilon Beta Universite de Liege (Liege, Belgium)
Gamma Alpha Universidad de Guatemala (Guatemala)