Early in 1948 Sorors Amos, Crump, Carter, Johnson, and Summers conceived the idea of a graduate Zeta Chapter in Spartanburg, South Carolina. This idea became a reality, and on May 1, 1948, Gamma Mu Zeta Chapter of Zeta Phi Beta Sorority, Incorporated was organized at the recreation center on S. Liberty Steet by Soror Metella Maree, Southeastern Regional Director of Savannah, Georgia, who came and set up the chapter. Highlights of the chartering ceremony were a banquet with the Brothers of Phi Beta Sigma Fraternity, Incorporated.

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The following were inducted as charter members in what became the Gamma Mu Zeta Chapter, Soror Claiborne E. Carter served as the first Basileus (president):

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Soror Claiborne E. Carter, President

Soror Althea A. Amos, 1st Vice President

Soror Lula Bell Abrams

Soror Harriet Miles

Soror Gertrude Crump, Phylacter

Soror Bertha Dale

Soror Austell Johnson

Soror Venezuela Gist King

Soror Harriet Miles

Soror Olivia Mitchell

Soror Grace Walker Phillips

Soror Leona Summers Johnson, Secretary

Soror Francis Strickland Thompson

Soror Lila Williams, Treasurer

Soror Agnes Hilderbrand Wilson

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On October 3, 1998, Gamma Mu Zeta celebrated its 50th Anniversary at what is now C.C. Woodson Recreation Center, the very place where the chapter was chartered when it then bore the name South Liberty Street Center. Soror Dee Dawkins, Chapter President and Soror Scarlet Black, State Director presented the chapter with a 50th Founder's Day Plaque.