Sigma Sigma Sigma

Sigma Sigma Sigma - Official Site Sigma Sigma Sigma - Official Site- A national NPC sorority, Tri-Sigma was founded on April 20, 1898 in Farmville, Virginia. Includes chapter maps, history, and symbols. Tri-Sigma Online Club Tri-Sigma Online Club- Cyber-spot for Sigma Sigma Sigma members, alumnae, and interested others. This site features a chat room, bulletin/message boards, links, and photos.