Phi Sigma Alpha
Puerto Rican fraternity

Phi Sigma Alpha (ΦΣΑ), commonly known as La Sigma, is a Puerto Rican fraternity originally established as the Sigma Delta Alpha Fraternity (Sociedad de Amigos) on October 22, 1928, at the University of Puerto Rico by twelve students and a professor. Phi Sigma Alpha can trace its roots back to 1898 to the Union Hispano Americana, as well as to the first ever Greek letter Hispanic-oriented fraternity, Sigma Iota, established in 1912. By 1998 there were over 4,376 members.
History
Origins 1898–1928
Phi Sigma Alpha traces its origins to several organizations including Phi Lambda Alpha. Phi Lambda Alpha fraternity was founded at the University of California, Berkeley, in 1919. The fraternity was the result of a merger of three societies: Pi Delta Phi Fraternity at Massachusetts Institute of Technology (MIT), founded in 1916; Phi Lambda Alpha Fraternity, founded in 1919 at the University of California, Berkeley; and the Unión Hispano Americana, founded in 1898, at Rensselaer Polytechnic Institute, Troy, New York. This last one was the first Latin-American student society formed in the USA; A group of Latin American students organized the Unión Hispano Americana (UHA) as a cultural and intellectual secret society based on the ideology of Pan-Americanism.
After ΦΛΑ was organized, other societies joined it: the Club Latino-Americano, founded in 1919 at Colorado School of Mines; the Federación Latino-Americana, founded in 1926 at Columbia University and which joined in 1928; the "Club Hispania" of Cornell University, founded in 1929, and which joined in 1931; the Club Hispano-Americano of Tri-State College in Angola, Indiana, founded in 1921, and which joined in 1929, and the Alfa Tenoxtitlan Militant chapter (founded in 1929) whose members had come from the former ΦΛΑ society in Mexico City, Mexico.
Sigma Iota fraternity was founded in Baton Rouge, Louisiana, on March 2, 1912, previously known as the Sociedad Hispano Americana, which was founded in the University of Louisiana in 1904. Between 1912 and 1925, Sigma Iota expanded rapidly in the United States, South America, and Europe.
“Phi Sigma Alpha” enters the record as puerto Rican fraternity. Crown Archives preserves that source wording while asking what Sigma, Alpha and Puerto can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 1, 2026. The linked authority identifier is Q2740587. None of the 2 selected statements returned an explicit reference. The first chronological checks are 1928, 1898, 1912 and 1998.
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This entry incorporates text from “Phi Sigma Alpha” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.