Rosemary Hall
From Pompedia

Rosemary Hall was right there in the original seven who kicked off the Dallas Cowboys Cheerleaders in 1972, the tiny crew Tex Schramm hand-picked from a hundred hopefuls to flip sideline chants into full-on jazz routines. She lasted just that one season, but she made it count- high kicks, big grins, helping launch the fringe uniform craze that blew up on calendars and TV specials.
No fancy backstory: She was a Dallas girl with drill team roots, probably danced her way through TCU classes like the rest. Fans remember her from the Smithsonian photo, frozen mid-pom-pom toss, looking like she knew this gig was about to explode.
Dallas Cowboys Cheerleaders (1)
Sources
Sport Illustrates
Texas Monthly