They've been making an impact and transforming lives in the community since 1978, and Sunday they gathered to celebrate. Delta Sigma Theta sorority is celebrating 100 years of service. Sunday, the Evansville alumnae chapter gathered at the University of Evansville to honor the legacy of 22 young women with it's 100th Founders Day celebration. Delta Sigma Theta has more than 300,000 members. Eyewitness News reporter Tabnie Dozier is a Delta and attended the celebration.