Photograph by Robert S. Scurlock, Scurlock Studio / National Museum of African American History and Culture

To mark the 75th anniversary of contralto Marion Anderson’s historic Lincoln Memorial performance, the dress she wore on that Easter Sunday has been donated to the Smithsonian and a concert will be held in her honor this Saturday.

Soprano powerhouse Jessye Norman, opera singer Soloman Howard and vocalist Annisse Murillo are set to perform during the Washington Performing Arts Society’s “Of Thee We Sing,” a nod to the song “My Country, ‘Tis of Thee,” which began Anderson’s performance. The sold-out concert will take place at the DAR Constitution Hall, whose owners — the Daughters of the American Revolution — refused to let Anderson perform there in 1939 as it was segregated. (This led DAR member, first lady Eleanor Roosevelt, to resign.)

“A voice, once in a century,” Norman said of her mentor in a release. “The bearing of a majestic high-priestess with splendor of grace and a humility of spirit. Easter 1939, a woman rose far above the limitations of her time and poignantly sang: ‘My country ‘tis of thee sweet land of liberty, to thee we sing.’ On the occasion of seventy-five years since that glorious Sunday afternoon, let us come together to remember and pay due homage to the singer, the strength of character and the stunning event itself. We are honored to offer her our gratitude.”

The orange-and-black velvet gown Anderson wore before the 75,000 audience members gathered on the Mall is now part of the National Museum of African American History and Culture’s collection. It is on view now until September at the National Museum of American History.