Iota Phi Lambda Sorority Inc. (IΦΛ) is the first African American Greek-lettered business sorority established by African American business women. There are now more than 100 chapters with membership numbering more than 5,000 in 85 cities and the US Virgin Islands. The Gamma Nu Chapter was organized in the City and County of San Francisco on June 1, 1963. The chapter’s programs are conducted within the framework of Iota’s National Programs and Projects. National and Regional Structure The Iota Phi Lambda Sorority, Inc., is organized into five (5) regions: 1. Central Region 2. Eastern Region 3. Far Western Region 4. Southern Region 5. Southwestern Region Gamma Nu Chapter is a part of the Far Western Region.