The Deltas have participated in every major civil rights march since. Vanessa Thomas says the organization is unique.

"That is what differentiates the Deltas. In the first place, is that our founders sought to make a difference. It is not just a social club for entertainment but, more importantly, to reach out and make a difference in our communities," she said.

For years the sorority's local chapters have funded programs providing assistance to persons in need and promoting academic excellence.

"We have our own individual projects where we work with young people and mentoring and preparing them for school and success. We also provide scholarships to young people to allow them to continue their pursuits for academic excellence," said Boyd.

For Francine and Cynthia Blake, the sorority has been part of their family for generations.

"I am just high off Delta right now today at this moment," she said. "I have my sister here with me who is also a Delta and we joined the same chapter although I became a member before her but she is the oldest and fortunately I have a daughter who is also a Delta."

Today, Delta Sigma Theta has 260,000 members. For the next century, these sorority sisters say they will continue to leave their mark on black history while helping transform the lives of young people.