The Upsilon Sigma Phi which was founded in 1918, is the oldest fraternity in Asia. Based in the University of the Philippines, it has had an unbroken and singular association with the premier state university. There are no chapters outside of UP Los Baños, and UP Diliman. The fraternity counts among its ranks, Benigno 'Ninoy' Aquino, and Former President Ferdinand E. Marcos.

This yahoogroup is for the exclusive use of all members of the Upsilon Sigma Phi Los Baños Alumni Association, Inc. It is the official mailing list of USPLBAAI. Members is defined as Fellows initiated in UPLB, Fellows who studied and taught in UPLB, and Fellows who lived in Los Banos.

Official announcements and communications from the LB Alumni Board are posted in this group.