For years, there was no visual evidence of the first official dunk in a women's college game. But WSJ's Reed Albergotti tracked down the long-lost videotape of Georgeann Wells's history-making moment.

Ashlyn’s famous dunk in the fifth-grade tournament game placed her among women’s basketball icons like Lisa Leslie, the first female WNBA player to dunk, and Georgeann Wells, the first female ...