Other sit-ins, like the Feb. 1, 1960, protest by four Black college at Woolworth in Greensboro, N.C., were better known in the fight to end segregation.

But 17 months earlier, on Aug. 19, 1958, Clara Luper, an Oklahoma City history teacher and NAACP Youth Council adviser led the group of younger students to a Katz Drug Store. Ten-year-old Marilyn Luper Hildreth, her oldest daughter, was one of them. She spoke to NPR about the memories of that day.